Advances in Animal and Veterinary Sciences

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AAVS_9_12_2036-2046

 

 

Research Article

 

Effect of Some Organic and Mineral Salts Supplementation on Hematological, Biochemical, Immunological Constituents and Reproduction in Hassani Goats under Arid Conditions

 

Bahaa Farrag*, Ibrahim Samir Abd El-Hamid, Muhammed Ahmed-Hilmy El-Rayes, Hesham Attia Shedeed, Fawzy Elessawy Younis

Animal physiology Department, Animal and Poultry Production Division, Desert Research Centre, Ministry of Agriculture and Land Reclamation, Cairo, Egypt.

 

Abstract | The aim of this study is to investigate the effect of some mixtures of salt additives containing (Cu, Zn, Mg, Fe and Co) in inorganic or organic form on hemato-biochemical blood parameters, immunological status and reproduction in Hassni goats. This study was carried out in the valley of Hederba in Halaieb - Shalateen - Abouramad triangle, south east of Egypt. A total of 36 Hassani goats, body weight 22.48±0.68 kg, aged 2-4 years were divided into three equal groups (n=12 in each group). The first group (control) received the basal control diet, the second group (Inorganic-S) were fed on basal diet plus (2.7 gm/head/day DM) from salts additive mixtures in inorganic form. The third group (Organic-S) received the same amount of mixture in the organic form. Feeding started one month before breeding season and continued until weaning stage. Hematological, blood biochemical constituents, immunoglobulin (Igs), complement immune proteins and thyroid hormones were measured. Also, does reproductive performance and kid’s birth and weaning weights were recorded. Overall mean of serum triiodothyronine (T3), thyroxin (T4) and cortisol concentrations were significantly (P<0.05) higher in Organic-S group compared with inorganic or control ones. Overall mean of copper (Cu) and iron (Fe) concentrations were increased (P<0.01) in treated groups compared with control. Interleukins (2, 6 and 12) decreased in treated groups compared with control. Plasma IgG, IgM and Complement 4 concentrations were significantly (P<0.05) increased in Organic-S group compared to the other two groups. We concluded that trace-elements supplementation in organic or inorganic forms were beneficial for reproduction, immunology and metabolic performance of Hassani does and growth performance of new born kids under arid conditions.

 

Keywords | Goat, Blood parameters, Immunity, Reproductive performance, Trace elements

 

Received | June 21, 2021; Accepted | July 07, 2021; Published | October 01, 2021

*Correspondence | Bahaa Farrag, Animal physiology Department, Animal and Poultry Production Division, Desert Research Centre, Ministry of Agriculture and Land Reclamation, Cairo, Egypt; Email: drc_bahaa@yahoo.com

Citation | Farrag B, El-Hamid ISA, El-Rayes MAH, Shedeed HA, Younis FE (2021). Effect of some organic and mineral salts supplementation on hematological, biochemical, immunological constituents and reproduction in Hassani goats under arid conditions. Adv. Anim. Vet. Sci. 9(12): 2036-2046.

DOI | http://dx.doi.org/10.17582/journal.aavs/2021/9.12.2036.2046

ISSN (Online) | 2307-8316; ISSN (Print) | 2309-3331

Copyright © 2021 Farrag et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

 

INTRODUCTION

 

Grazing of natural forage provides the least cost source of nutrients to ruminant nutrition. In the arid area of Halaieb, goats and sheep are depending on natural and occasionally salt licks to maintain their mineral requirements. However, there is a considerable variability in the levels of minerals in pasture and mineral mixture (Badawy, 2005). The pasture in Halaieb-Shalateen-Abou Ramad triangle region contains three main plant species which are poor in their nutritional value, namely Panicum turgidum, Lyicum shawii and Acacia tortilis (El-Shaer et al., 1997). Rarely, pasture can completely satisfy all mineral requirements of grazing ruminants (McDowell et al., 1993). In Halaieb-Shalateen-Abou Ramad triangle region, (Badawy, 2005; Nassar, 2008) found unbalanced plasma mineral contents in camels and small ruminants that depend on pastoral areas of Egypt. The balanced mineral supplementation promotes the improvement of livestock production in the arid and semi-arid regions and that maybe correcting mineral deficits in small ruminants which are kept in this region. Pastures often fails to supply all needed mineral elements in adequate quantity throughout the year to grazing ruminants (Underwood and Suttle, 1999). Mineral inadequacies in forages and soils have been reported, to be the principal causes of reproductive failure and low animal productivity (McDowell and Valle, 2000).

 

Mineral supplementation of sheep is a useful method in reducing the unbalanced salt conditions found in the rangeland of desert regions (like pasture of Halaieb) which affects the production and performance of animals (Badawy et al., 2018).

 

Trace minerals are needed in adequate quantities for body, are essential nutrients for animal immunity, growth, reproduction and for offspring performance. However, trace elements deficiency among ruminants is common. In addition, neonatal mortalities are associated with trace elements deficiencies (Van Metre and Callan, 2001). Trace minerals are supplemented in the diets of small ruminants in two forms: inorganic and organic salts. But organic minerals have higher retention rate and relative bioavailability than inorganic forms in lambs and kids (Garg et al., 2008; Kumar et al., 2009).

 

Supplementation of animals with organic minerals enhances their growth and reproductive performances, while it decreases mortality of newborn (Formigoni et al., 2011).

 

Also, addition of trace elements such as copper (Cu) and cobalt (Co) to diets of animals led to improvement of reproductive performance of dams (Aliarabi et al., 2019) and wool fiber characteristics in newly born (Badawy et al., 2018).

 

Trace minerals deficiency in the diet alone can reduce animal production by 20-30%. Therefore, supplementation of trace elements in animal diets practiced in order to ensure their rapid growth, enhance reproductive performance and improve immune response (Overton and Yasui, 2014). Deficiencies of trace elements such as cobalt, copper, iron, zinc, and selenium had been reported to occur in all the worldwide climatic zones (Underwood and Suttle, 2001). Micro-minerals imbalances have a great impact on animal’s performance causing various problems due to its resistance against other elements within the diet (Tayefi-Nasrabadi et al., 2008). Deficiency of trace minerals can affect the production and performance of sheep and goats (Lengarite et al., 2012). Traditionally, supplemental trace minerals have been supplied to livestock in the form of inorganic salts (sulfates, oxides and chlorides). The use of organic trace minerals is increased due to reports of improved feed efficiency, growth, reproduction and immune response (Swenson, 1998).

 

Therefore, the present study was carried out to investigate the effect of organic and inorganic mineral supplementation during mating, pregnancy and lactating periods on the reproductive performance and immune status of does and their kids growth performance which grazing in arid rangeland lacking in trace minerals under arid conditions in Egypt.

 

MATERIALS AND METHODS

 

This study was carried out at Ras Hederba Valley, Halaieb and Shalateen Experimental Research Station, Desert Research Center, Ministry of Agriculture, Egypt. The station is located in the Halaieb-Shalateen-Abou Ramad Triangle Region, Red Sea Governorate, about 1300 km south eastern of Cairo with latitude 22, 00, 720 N and longitude 36, 48, 955 E.

 

Animals and management

Thirty-six Hassani goats were included in this study. Goats were randomly allotted to three equal experimental groups of 12 does each. Goats aged 2-4 years with an average body weight of 22.48±0.68 kg, were housed in semi open yards surrounded with a wire fence and roofed with natural grass. Goats grazed on natural pasture about 8 hours daily and received a pelleted concentrate feed mixture (500 gm/head/day) as basal diets. Fresh water was presented twice daily before and after going to grazing. Goats were healthy and free of any diseases or reproductive disorders. All experimental procedures were conducted in conformity with the EU Directive for the protection of experimental animals (2010/63/EU).

 

Experimental design

Goats were divided into three equal groups. 1st group was kept as control (n=12) and received only the basal diet. The 2nd group (Inorganic-S; n = 12) received the basal diet plus (2.7 gm/head/day DM) of salts additive mixtures which contain (Cu, Zn, Mg and Co) in inorganic form. The 3rd group (Organic-S; n = 12) received the basal diet plus (2.7 gm/head/day DM) of salts mixtures in organic form (Active Vet Company, USA). Mineral additive in both forms were added with concentrate feed mixture. The experiment was commenced one month before mating and continued until the weaning stage. The chemical composition of the basal or treated diets is presented in (Table 1). Does live body weights were recorded before the starting of treatment and were recorded until kidding. Kid’s live birth and weaning weights were recorded using an electronic balance.

 

Table 1: Ingredients and chemical composition of concentrate mixture and trace elements of treated diets of Hassani goats.

 

Treatment diets
Ingredient Composition (%) Concentrate mixture g/kg
Yellow corn 25 Organic matter 940
Cottonseed meal 16.7 Ash 60
Wheat bran 30 Crude protein 148
Sunflower meal 25 Ether extract 55
NaCl 1 Neutral detergent fiber 534
Limestone 2 Acid detergent fiber 369
Trace minerals 0.3 Hemicellulose 165
Trace elements (g/kg DM) Control Inorganic form Organic form
Phosphors (P) 0.71 1.67 1.25
Zink (Zn) 0.63 2.00 1.35
Iron (Fe) 0.42 1.00 1.25
Copper (Cu) 0.62 3.33 3.75
Selenium (Se) 0.41 0.66 0.63
Cobalt (Co) 0.21 0.16 0.13
Iodine (I) - 0.5 0.15

Caco3

- 990.7 -
Lysine - - 991.5

 


Synchronization of estrus

All does were estrus synchronized using double injunction (1 ml) of prostaglandin PGF2α (Estrumate, 263 μg Cloprostenol/ml, Schering-Plough Animal Health, Germany) 11 days apart. Exhibiting estrus was detected using tracer buck that was fitted with dye markers throughout 72 hours. Does that exhibited estrus were naturally mated using mature fertile bucks. Data were recorded during the experimental period for each experimental group.

 

Blood samples

Blood samples were collected from does during the experimental period (from day zero to 150 days (and directly centrifuged. Serum samples were collected and frozen at -20°C for further analysis.

 

Hematological parameters

Hemoglobin (Hb) concentration was determined using colorimetric kits (Vitro Scient, Egypt). Packed cell volume percentage (PCV %) was estimated by the use of the packed cell volume tubes method according to (Cheryl et al., 1992), the number of red blood cells (RBC’s, 106/mm3) and total count of white blood cells (WBC’s, 103/mm3) were counted by Thom’s hemocytometer slide according to method cited by (Bauer, 1970). The calculations of the erythrocyte indices were done according to (Schalm et al., 1975). Mean corpuscular volume (MCV, µm3) was calculated according to equation MCV, µm3 = PCV (%)/ RBC’s (106/mm3) ×10. Mean corpuscular hemoglobin (MCH, pg) was calculated according to equation MCH, pg= Hb (g/dl)/ RBC’s (106 /mm3) ×10. Mean corpuscular hemoglobin concentration (MCHC, %) was calculated according to equation MCHC, % = Hb (g/dl)/ PCV (%) × 100.

 

Biochemical parameters

Serum samples from does during the experimental period were subjected to colorimetric analysis using commercial kits for the analysis of urea, creatinine, aspartate amino transferase (AST), alanine aminotransferase (ALT) and γ-glutamyl transferase (GGT) using commercial kits (Spectrum Biotechnology, Egypt). Calcium (Ca), copper (Cu), selenium (Se) and iron (Fe) were determined using (Inductively Coupled Argon Serum, iCAP 6500 Duo, Thermo Scientific, England). The multi-element certified standard solution (Merch, Germany) was used as a stock solution for instrument standardization.

 

Serum immunoglobulins (Igs) and complement immune proteins

Complement immune proteins including complement 3 (C3) and complement 4 (C4) and serum total immunoglobulin subsets (IgG and IgM) were measured by ELISA kits according to Abbott Laboratories instructions (Abbott Park, IL 60064 USA).

 

Hormonal assay

Triiodothyronine, thyroxine and cortisol hormones were analyzed using ELISA kit (Atlas Medical, London). Cortisol hormone was analyzed using ELISA kits (Immunospec Corporation, USA).

 

Statistical analysis

Data of does weights, biochemical, hematological and trace elements metabolic concentrations was analyzed by General Linear Model (GLM) procedure (SAS, 2006) using the following model:

 

Yijk =µ + Gi + Sj + G*Sij + eijk

 

Yijk= observations; µ= Overall means; Gi= effect of ith group (i: 1-3); Sj= effect of jth stages (j: 1-3); G*Sij= interaction between groups and stages. eijk= Experimental error. Duncan’s multiple range tests was used to separate means.

 

Another General Linear Model procedure (SAS, 2006) was used for the statistical analysis of birth and weaning weights for kids using the following model:

 

Yij = μ + Ti + eij

 

Yij= any observation of jth animal within ith treatment; μ= Overall mean; Ti= Effect of ith treatment (i= 1-3); eij= Experimental error.

 

Data expressed as percentages included (estrus detection rate, pregnancy rate and litter size) were analyzed by the chi-squared test.

 

RESULTS AND DISCUSSION

 

Reproductive performance of Hassani does

Micro minerals play a very important role in the reproduction of farm animals especially, in arid regions that are deficient in their minerals content. Many studies reported that the organic form of mineral supplementation had a positive effect on the reproductive performance of animals.

 

Reproductive performance included some parameters are presented in Table 2. Our results showed that estrus detection rate was 75.00, 83.33 and 91.67 % of the control, inorganic-S and organic-S groups, respectively, with significant difference (P<0.05) among the three groups.

 

Pregnancy rate increased (P<0.05) in organic-S group (91.67%) followed by inorganic-S (75.00%) compared with control (66.67%). Litter size increased (P<0.05) in organic-S (172.7%) followed by the control group (162.5%) then inorganic-S (155.6). Organic-S group had higher (P<0.05) twins’ rate (72.73%) than those of control or inorganic-S groups (52.60 and 66.67%), respectively. While, no significant difference was detected in single rate of the experimental groups. It is well known that trace elements play important roles for fertility during the breeding season (Kumar, 2003).

 

Our results, concerning the improvement of goat’s reproduction, were in agreement with studies in other species. Senosy et al. (2018) demonstrated that reproductive performance including ovulation and pregnancy rates were significantly improved as a result of organic bound phosphorous injection twice a week for successive three weeks in Farafra ewes. Ahola et al. (2004) found that cows receiving trace minerals (Zn, Cu and Mn) had higher pregnancy rates than non-supplemented. Contrary to the current research, Boland et al. (2005) did not report any effect of selenium supplement on reproductive parameters in sheep.

 

Table 2: Reproductive performance of Hassani does fed a control diet or a diet supplemented with trace-elements in inorganic or organic forms under arid conditions.

 

Item Control Inorganic-S Organic-S P
Estrus detection rate %

75.00C (9/12)

83.33B (10/12)

91.67A (11/12)

0.05
Pregnancy rate %

66.67C (8/12)

75.00B (9/12)

91.67A(11/12)

0.05
litter size %

162.5B (13/8)

155.6C (14/9)

172.7A (19/11)

0.05
Single rate % 37.50 (3/8) 33.33 (3/9) 27.27(3/11) 0.89
Twins rate %

62.50B (5/8)

66.67B (6/9)

72.73A (8/11)

0.05


A-B letters among groups differ significantly (P<0.05).

 

Table 3: Birth and weaning weights (Kg) of newly born kids born from does fed a basic diet or supplemented with trace elements in inorganic or organic forms (LSM±SE).

 

Traits Control Inorganic-S Organic-S P
Birth weight (kg)

1.44B ± 0.07

1.70A± 0.07

1.80A± 0.06

0.05
Weaning weight (Kg)

5.20B ± 0.24

6.22A ± 0.23

6.25A ± 0.20


A-B values within the same row with different letters differ (P<0.05).

 

Kids weights

Organic and inorganic minerals supplementation for does had a positive significant effect on the birth and weaning weights of their kids (Table 3). Kids born from goats supplemented with organic-S and inorganic-S showed higher birth weight than kids born by control goats (1.80 ± 0.06, 1.70 ± 0.07 and 1.44 ± 0.07 kg, respectively, P=0.05). In the same context, weaning weight of kids born from goats supplemented with organic-S and inorganic-S showed higher weaning weight than kids born by control goats (6.25 ± 0.20, 6.22 ± 0.23 and 5.20 ± 0.24 kg, respectively, P=0.05). The present findings were agreed with Sallam et al. (2017) who found that significant difference in birth and weaning weights among kids whose dams were treated with organic minerals mixture supplementation compared with untreated Egyptian goat. Aliarabi et al. (2019) found that body weight at birth and weaning were significantly higher (P<0.01) in Mehraban lambs whose mothers were given bolus containing Zn, Co, and Se compared to ewes in control group. A few studies reported the effect of trace minerals supplementation on birth and weaning weight by administration of these trace minerals in small ruminants. Norouzian et al. (2014) reported that birth weight did not differ due to Cobalt supplementation in late pregnancy of ewes which is in disagreement with our results.

 

Changes in serum mineral concentrations during pregnancy stages

Changes of some serum trace elements in Hassani does fed a basic diet or a diet supplemented with organic or inorganic salts during different pregnancy stages are shown in Table 4. The results indicated that the plasma Cu, Se and Fe concentrations of serum does differs (P < 0.05) among groups. Plasma Ca concentration mean did not differ (P > 0.05) among groups. The serum Cu concentration of does were significantly higher in treated groups (20.58±1.30 and 23.46±1.30 mg/dL) respectively, than control group (10.91±1.30 mg/dL). In the same context, there were significant effects of stages of pregnancy between groups with respect to copper and selenium concentrations. These results were in agreement with the finding of another study in which supplementary administration of Se to ewes on Cu deficient pastures increased Cu status (Cristaldi et al., 2005). The present results showed that inorganic-S group achieved the highest overall mean values of serum Se (1.21±0.01 mg/dL) while, organic-S group achieved the highest overall mean values of serum Fe (47.24±0.01 mg/dL) and highest overall mean values of serum Cu (23.46±1.30 mg/dL). Our current results are consistent with previous reports in different animal species such as sheep (Senosy et al., 2018; Abdelrahman et al., 2017), goats (Pechova et al., 2009) and dairy cows (Kinal et al., 2007).

 

Table 4: Changes of some serum trace-elements in Hassani does fed a basic diet or a diet supplemented with organic or inorganic salts during different pregnancy stages under arid conditions.

 

Items Groups Pregnancy stages P
Early-stage

(18–30 d)

Mid-stage

(60–90 d)

Late-stage

(120–150 d)

±SE Overall ±SE G S G×S
Ca (mg/dL) Control 21.36 22.00 22.55 1.02 21.97 0.59 0.21 0.72 0.42
In-organic-S 22.34 22.59 19.95 21.63
Organic-S 20.56 20.44 20.51 20.50
Overall 21.42 21.68 21.00 0.59    
Cu (mg/dL) Control 6.86 13.79 12.08 2.26

10.91B

1.30 0.05 0.01 0.95
In-organic-S 16.42 22.42 22.89

20.58A

Organic-S 18.15 25.78 26.46

23.46A

Overall

13.81Y

20.66X

20.48X

1.30    

Se

(mg/dL)

Control 1.14 1.16 1.19 0.03

1.16AB

0.01 0.05 0.01 0.18
In-organic-S 1.18 1.17 1.28

1.21A

Organic-S 1.03 1.16 1.23

1.14B

Fe

(mg/dL)

Overall

1.11Y

1.16Y

1.23X

0.01    
Control 20.64 21.13 21.69 104.43

21.16B

0.01 0.05 0.50 0.63
In-organic-S 38.19 47.00 36.99

40.73A

Organic-S 43.41 47.71 50.63

47.24A

Overall 34.08 38.61 36.44 8.67    


 

A-B values with different superscript letters in the same column are statistically different (P <0.05); X-Y values with different superscript letters in the same rows are statistically different (P <0.01). G= groups, S= pregnancy stages.

 

Table 5: Changes of kidney and liver functions in Hassani does fed a basic diet or a diet supplemented with inorganic or organic salts during different pregnancy stages under arid conditions.

 

Items Groups Pregnancy stages P
Early-stage

(18–30 d)

Mid-stage

(60–90 d)

Late-stage (120–150 d) ±SE Overall ±SE G S G×S
Urea (g/dL) Control 57.07 43.57 51.56 4.33 50.73 2.50 0.35 0.30 0.12
In-organic-S 55.45 62.12 50.15 55.90
Organic-S 56.35 47.57 53.69 52.93
Overall 56.28 51.08 51.80 2.50    
Crea (g/dL) Control

2.09bc

2.10bc

1.55d

0.09 1.91 0.05 0.16 0.01 0.01
In-organic-S

2.08bc

1.89c

2.24ab

2.07
Organic-S

1.72c

2.48a

1.74c

1.98
AST (IU/L) Overall

1.96Y

2.16X

1.84Y

0.05    
Control

53.46c

68.99bc

99.18a

6.48

73.87A

3.74 0.05 0.01 0.01
In-organic-S

61.25bc

54.10c

60.50bc

58.61B

Organic-S

63.93bc

65.60bc

81.03ab

70.18A

ALT (IU/L)

Overall

59.54Y

62.60Y

80.28X

3.74    
Control 84.36 79.22 77.25 4.35 80.27 2.51 0.57 0.68 0.49
In-organic-S 79.18 79.64 81.90 80.24
Organic-S 75.18 82.58 73.10 67.95
GGT (IU/L) Overall 79.57 80.48 77.41 2.51    
Control 58.66 40.14 58.03 7.47

52.27A

4.31 0.05 0.62 0.13
In-organic-S 46.19 40.42 56.27

47.62AB

Organic-S 33.20 48.38 32.71

38.09B

Overall 46.01 42.98 49.00 4.31  


A-B values with different superscript letters in the same column are statistically different (P <0.05). a-d values with different superscript letters in the same rows are statistically different (P <0.01). G= groups, S= pregnancy stages.

 

These findings are in agreement with (Abd El-Hamid et al., 2019) who found that inorganic-S and organic-S groups had the higher values of Cu, P and Fe compared with control one in sheep. Trace mineral deficiency during fertilization and conception stages lead to increase some risks including anaemia, pregnancy induced hypertension, fetal growth restriction and increase maternal and fetal mortality (Cheesbrough, 2010). In this study, the overall positive effects of the organic and inorganic mineral supplementations on the blood Cu, Fe and Se, compared with the control group, could be attributed to the more absorption of these minerals from the gastrointestinal tract into the blood compared with the diet free of the supplemental minerals (Suttle, 2010).

 

Kidney and liver functions

During the different pregnancy stages, changes of kidney and liver functions in Hassani does fed a basic diet or a diet supplemented with organic or inorganic salts are shown in Table 5. The obtained results are demonstrated that treated groups have numerically higher of serum urea and creatinine concentrations than this for control group. However, the stage of pregnancy or the interaction between treatment and pregnancy stage has significant effects on serum creatinine concentration. Our current results are in agreement of Abdelrahman et al. (2017); Antunovic et al. (2011) who reported that the values of urea-N and creatinine were fell within the reference range. El-Rayes (2019) also stated that inorganic mineral additive resulted in the highest blood urea followed by that of ewes received organic mineral additive and the least is the control group. High blood urea could be due to increase cortisone level affecting the catabolism of protein in the body Silanikove (2000). Creatinine did not affected by treatment, since high creatinine is indicative of poor protein and amino acid metabolism that can lead to impaired renal function and cardiac infarction.

 

In Table 5, levels of AST, ALT and GGT (IU/L) were higher in control group (73.87±3.74, 80.27±2.51 and 52.27±4.31 IU/L), respectively compared to organic-S group (58.61±3.74, 80.24±2.51 and 47.62±4.31, respectively. Inorganic-S group (70.18±3.74, 67.95±2.51 and 38.09±4.31, respectively. AST and GGT increased with advancing pregnancy. Growth of fetus needs more efforts from liver for amino acids incorporation in different tissues. Increased fetal growth needs utilization of amino acids from the maternal serum protein Antunovic et al. (2002). From these results, this may be indicated that trace elements supplementation did not affect the liver function where AST and ALT values were within the normal levels.

 

Blood cytokine

Changes in some plasma immune-cell-mediators (cytokine) were presented in Table 6. Organic-S group increased (P<0.05) tumor necrosis factor (TNF) and Interleukin1(IL-1). Meanwhile, control group led to significant increase in IL-2, IL-6 and IL-12. IL-2, IL-6 and IL-12 values decreased by adding organic and inorganic mineral. The decrease was more pronounced by inorganic mineral. It well established that reactive oxygen species exert a biphasic effect during pregnancy and parturition at adequate levels are fundamental for many physiological pathways to occur such as embryo implantation (Mutinati et al., 2013). Accordingly, the reduction in IL-2, IL-6 and IL-12 values by mineral additives might be of beneficial effect for goats to complete pregnancy and kids delivery.

 

Hematological parameters

Data for haematological parameters in Hassani goats fed a basic diet or a diet supplemented with organic or inorganic salts are shown in Table 7. Overall means of blood Hb concentration (g/dl), PCV and MCHC (%), RBCs (106/mm3) and MCV (μm3) in treated groups were significantly different from the control. Numerical increment in overall means of WBCs (103/mm3) were found in control group (8.53±1.01 106/mm3) compared with In-organic-S group (6.78±1.01 106/mm3) and organic-S group (5.50±1.01 106/mm3) with no significant difference. However, the difference due to treatment, stages of pregnancy and the interaction between them did not show any significance. Red and white blood cells were higher in control group compared to treated groups. RBCs, WBCs and haemoglobin concentration (Hb) as well as mean corpuscular haemoglobin concentration (MCHC) decreased in treated organic-S and in-organic-S groups than control ones (Table 5). The decrease was more pronounced in ewes received inorganic-S additive. These results are completely consistent with El-Rayes (2019) who reported the same trend on sheep. Contrary to our results, El-Rayes (2019) who stated that addition of organic minerals additive to pregnant ewes resulted in significant increase in WBCs count which enhance immune capacity of ewes, but this may be due to the difference in animal type. Cook et al. (2002) stated that long-standing exposure to heat stress is responsible for altering number and reactivity of immune cells and immunoglobulin production. The present results might indicate that inorganic mineral additive augmented the stress of haemodilution.

 

Table 6: Changes in some blood cytokine in Hassani does fed a basic diet or a diet supplemented with inorganic or organic salts during different pregnancy stages under arid conditions.

 

Items Groups Pregnancy stages

P
Early-stage

(18–30 d)

Mid-stage

(60–90 d)

Late-stage

(120–150 d)

±SE Overall ±SE G S G×S

TNF

(pg/ml)

Control

13.83cd

16.27c

14.73c

2.01

14.94B

1.16 0.01 0.13 0.01
In-organic-S

18.50bc

8.27d

7.97d

11.57B

Organic-S

25.77a

24.23ab

26.83a

25.16A

Overall 19.36 16.25 16.51 1.16    

IL-1

(pg/ml)

Control 30.40

 

29.40 20.20 5.71

26.66A

3.29 0.01 0.80 0.67
In-organic-S 12.03 9.50 8.87

10.13B

Organic-S 20.57 25.70 26.83

24.36A

IL-2 (pg/ml) Overall 21.00 21.53 18.63 3.29    
Control 36.53

 

33.13 32.67 3.05

34.11A

1.67 0.01 0.92 0.87
In-organic-S 22.33 21.93 23.87

22.71B

Organic-S 24.23 25.27 25.90

25.13B

IL-6

(pg/ml)

Overall 27.70 26.77 27.47 0.92    
Control 28.70

 

28.10 45.30 3.32

34.03A

1.91 0.01 0.01 0.82
In-organic-S 18.00 20.37 30.00

22.78B

Organic-S 21.43 23.67 38.07

27.72B

IL-12

(pg/ml)

Overall

22.71X

24.04X

37.78Y

1.91    
Control 23.47

 

25.00 25.83 1.87

24.67A

1.07 0.01 0.27 0.77
In-organic-S 15.70 14.80 15.97

15.84B

Organic-S 22.63 25.20 27.57

15.13B

Overall 20.60 21.66 23.12 1.07  


A-B values with different superscript letters in the same column are statistically different (P <0.01). a-d values with different superscript letters in the same rows are statistically different (P <0.01). X-Y values with different superscript letters in the same column are statistically different (P <0.01). G= groups, S= pregnancy stages.

 

Table 7: Changes of some hematological parameters in Hassani does fed a basic diet or a diet supplemented with inorganic or organic salts during different pregnancy stages under arid conditions

 

Items Groups Pregnancy stages

P value
Early-stage

18–30 d

Mid-stage

60–90 d

Late-stage

120–150 d

±SE Overall ±SE G S G×S
Hb (g/dl) Control 19.40 18.13 20.30 0.78

19.27A

0.45 0.01 0.11 0.46
In-organic-S 16.93 14.53 16.13

15.86B

Organic-S 16.57 16.73 16.87

16.72B

Overall 17.63 16.64 17.76 0.45    
PCV (%) Control 19.33 20.83 20.77 1.48

20.31C

0.85 0.01 0.19 0.73
In-organic-S 25.07 29.33 28.73

27.71A

Organic-S 23.57 24.03 24.10

23.90B

Overall 22.65 24.73 24.53 0.85    

RBCs (106/mm3)

Control 13.71 14.17 13.65 0.74

13.84A

0.42 0.01 0.66 0.43
In-organic-S 10.13 10.65 9.97

10.24C

Organic-S 13.07 11.00 11.64

11.90B

Overall 12.30 11.94 11.75 0.42    

WBCs (103/mm3)

Control 8.70 7.26 9.94 1.75 8.53 1.01 0.12 0.82 0.83
In-organic-S 6.21 6.69 6.78 6.56
Organic-S 4.37 6.63 5.23 5.50
Overall 6.42 6.86 7.31 1.01    
MCH (pg) Control 14.18 12.85 15.05 0.89 14.02 0.51 0.08 0.24 0.07
In-organic-S 16.75 13.85 16.23 15.61
Organic-S 12.73 15.30 14.57 14.20
Overall 14.55 14.00 15.28 0.51  
MCHC (%) Control 103.34 87.30 98.71 7.09

96.44A

4.09 0.01 0.16 0.69
In-organic-S 68.04 49.63 55.98

57.88C

Organic-S 70.65 70.45 70.54

70.54B

Overall 80.67 69.12 75.07 4.09  

MCV (µm3)

 

Control 14.23 14.82 15.45 1.88

14.80C

1.08 0.01 0.18 0.84
In-organic-S 24.87 27.79 29.31

27.32A

Organic-S 18.16 21.87 20.72

20.24B

Overall 19.09 21.46 21.82 1.08  


A-B values with different superscript letters in the same column are statistically different (P <0.01). G= groups, S= pregnancy stages.

 

Plasma thyroid and cortisol hormones concentrations

T3, T4 and cortisol concentrations in Hassani does are illustrated in Figure 1. The differences in overall means plasma T3 (T3, ng/mL) concentrations between organic-S and control or inorganic groups (0.79±0.09 vs. 0.46±0.09 and 0.47±0.09 ng/ml, respectively) were significant differences (P < 0.05). The same trend was observed in plasma T4 concentrations where significant (P < 0.05) differences were detected in overall means of plasma T4 (ng/mL) concentrations between organic-S and control or inorganic groups (49.87±5.90 vs. 29.32±5.90 and 29.24±5.90 ng/ml, respectively). This might indicate increasing basal metabolic rate as a result of trace elements contents of additives. Moreover, providing trace elements was proved to be important for thyroid function. In the same context, serum cortisol concentration was significantly higher in organic-S group compared to other groups. Rising cortisol in late pregnancy stage is of vital importance.

 

Fowden et al. (1998) explained that umbilical glucose uptake is reduced in fetal ewes during late gestation. When fetal cortisol concentrations are raised, irrespective of whether this increment cortisol is exogenous or endogenous in origin, fetal glucose levels increased despite the reduced umbilical glucose uptake, which suggests that hepatic glycogenesis was activated in these circumstances. Aliarabi et al. (2019) reported that serum T3 concentration was significantly higher in bolus (Zinc, Selenium, and Cobalt) given ewes as compared to animals in control group. Where normal thyroid status is dependent on the presence of some trace elements (I, Se, Zn, and Fe) for both the synthesis and metabolism of thyroid hormones (Arthur et al., 1999). This result was in agreement with the finding of Abou-Zeina et al. (2009) who reported that zinc supplementation increased total T3. Contrary to our results, Aghwan et al. (2013) who reported that dietary supplementation of iodine and selenium had no effect on free T4 levels (p>0.05).

 

 

Igs concentrations (IgG, IgM) and immune complements (C3, C4)

The mean of serum IgG and IgM concentrations and immune complement (C3, C4) of the Hassani goats are shown in Figure 2. The serum IgG concentrations in treated groups increased compared to control group, but treatments did not cause any significant effect on the serum IgG concentrations. In contrast, the serum IgM concentrations in treated groups increased compared to control group, with high significant differences between organic-S group (0.36±0.04 mg/dL), control group (0.20±0.04 mg/dL) and inorganic-S group (0.22±0.04 mg/dL). These parameters showed increase values as the pregnancy progresses especially in the organic-S group. These results are consistent with what was mentioned by (Mohamed et al., 2017), where a significant increase in the concentration of IgG was found in the groups treated with zinc compared to the control. Deficiency in some trace element such as (Zn, Fe, Se and Ph) reduces immune responses and impairs the antioxidant defense system (Chesters, 1997). The higher IgG and IgM concentrations in the blood of goats receiving the different supplemental trace minerals was due to inhibitory effects of Mn, Zn and Cu on oxidative stress and declining the levels of free radicals in the body (Suttle, 2010). Compared to the control group, the significantly higher blood IgM concentration in the organic and inorganic groups trace minerals-supplemented goats as well as the higher blood IgG concentration in the organic and inorganic trace minerals-fed goats suggested that these minerals probably have important roles in the production of immunoglobulins and supplementing goats with these minerals may improve passive transfer of immunoglobulins in new-born kids. Moreover, in confirmation of the result reported by Zhao et al. (2015), the higher immunoglobulins in the organic minerals-supplemented cows than that in the control group indicated that organic trace minerals may strengthen immunity system in cows.

 

 

CONCLUSIONS AND RECOMMENDATIONS

 

Reproductive performance and immune status in Hassani goats which reared in arid rangelands in Halaieb-Shalateen - Abouramad triangle of Egypt was restored and improved upon trace elements supplementation. Our study results confirmed the importance of the presence of these elements in the diets due to their critical role in reproductive and productive performance of goats. Organic-S minerals supplementation ensured better reproductive efficiency and better performance for the newborn kids.

 

ACKNOWLEDGMENTS

 

Our sincere thanks and gratitude go to Dr. Moustafa M. Ghandour and Dr. Ebrahim Shawky for helpful comments in editing the manuscript.

 

AUTHOR’S CONTRIBUTION

 

BF helped in carrying out blood analysis in DRC complex laboratories and writing this article. ISA helped analysis of the chemical composition of diets and blood analysis. HAS, MA-HE and FEY helped to collect blood samples and field data during the experiment period. All authors helped in planning the research and statistical analysis of the results. All authors read and approved the final manuscript.

 

Conflict of interest

The authors have declared no conflict of interest.

 

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