Journal of Animal Health and Production

Research Article
J. Anim. Health Prod. 9(2): 119-131
Http://dx.doi.org/10.17582/journal.jahp/2021/9.2.119.131
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Fawzia Amer Hassan1*, Marwa Hosni Abd El-Maged2, Hassan Abd El-Halim2, Gomaa Said Ramadan3

1By-products Utilization Research Department, Animal Production Research Institute, Agricultural Research Center, Giza, Egypt; 2Poultry Breeding Research Department, Animal Production Research Institute, Agricultural Research Center, Giza, Egypt; 3Animal Production Department, Agricultural and Biological Research Division, National Research Centre, 12612 Dokki, Giza, Egypt.

Abstract | This study aimed to examine the effects of dietary chitosan (CH) and nano-chitosan (NCH) supplementation as prebiotics on growth performance, carcass characteristics, plasma constituents, antioxidant status and microbial counts of two lines of Japanese quail. A total of 840 unsexed selected Japanese quail (SJQ) and Japanese quail (JQ) (one day old) with an average initial body weight of 11.65 ±0.03 g and 9.11± 0.04 g, respectively were used in 10 treatment groups, each group has 3 replicates having 28 quail chicks in each. The experimental groups for each line were as follows: The 1st group was fed the basal diet and served as the control; the 2nd and 3rd groups were fed the basal diet supplemented with CH at 50 and 70mg/kg diet; the 4th and 5th groups were fed the basal diet supplemented with NCH at 30 and 50 mg/kg diet. The results showed that SJQ group had a higher (P<0.0001) live body weight, body weight gain, feed intake and better feed conversion ratio. The group of SJQ birds fed diet supplemented with 70 mg CH had the highest (P<0.05) live body weight. The diet supplemented with 70 mg CH gave the highest plasma total protein (P<0.05) for SJQ and JQ groups. Diets supplemented with 70 mg CH or 50 mg NCH exhibited the highest albumin level and TAOC (P<0.0001). The lowest cholesterol content (P<0.05) was obtained by SJQ groups fed diet supplemented with 70 mg CH or 50 mg NCH and JQ groups having 70 mg CH or 50 mg NCH. The lowest LDL cholesterol content (P<0.0001) of plasma was for SJQ fed diet supplemented with 70 mg CH and JQ fed diet supplemented with 30 mg NCH. Supplementation of 30 and 50 mg NCH recorded higher (P<0.0001) Lactobacillus count and the lowest (P<0.0001) E.coli and Salmonella counts for SJQ and JQ. In conclusion, the dietary supplementation of CH and NCH in different quail lines diets could be used as an antioxidant and antibacterial additive without causing any negative effects on growth performance, carcass characteristics and plasma constituents.

Keywords | Chitosan, Nano-chitosan, Japanese quail lines, Growth, Antioxidant, Intestinal microbial