Research Article

 

Intake, Nutrient Digestibility and Production Performance of Pesisir Cattle Fed Tithonia diversifolia and Calliandra calothyrsus-Based Rations with Different Protein and Energy Ratios

 

Roni Pazla*, Adrizal, Riesi Sriagtula

Faculty of Animal Science, Andalas University, Campus Unand Limau Manis Padang, Postal Code 25163.

 

Received | April 13, 2021; Accepted | June 30, 2021; Published | August 15, 2021

*Correspondence | Roni Pazla, Faculty of Animal Science, Andalas University, Campus Unand Limau Manis Padang, Postal Code 25163; Email: ronipazla@ansci.unand.ac.id

Citation | Pazla R, Adrizal, Sriagtula R (2021). Intake, nutrient digestibility and production performance of pesisir cattle fed Tithonia diversifolia and Calliandra calothyrsus-based rations with different protein and energy ratios. Adv. Anim. Vet. Sci. 9(10): 1608-1615.

DOI | http://dx.doi.org/10.17582/journal.aavs/2021/9.10.1608.1615

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

Copyright © 2021 Lukkananukool 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

 

Cattles as a source of animal protein play an important role in supporting national food security (Basyar, 2021). Beef is still the community’s choice because of their complete nutritional value, like lipids, proteins with high biological value, trace elements, and vitamins (Pighin et al., 2016). One of the native Indonesian cattle found in the Southern Pesisir district of West Sumatra province is Pesisir cattle (Hartatik et al., 2018). Pesisir cattle include five native Indonesian cattle germplasm after Bali cow, Aceh cow, Sumbawa, and Madura cow. Pesisir cattle can adapt to conditions in a coastal environment that is poor of forage. The carcass percentage of Pesisir cattle is 50.6%, which is higher than the carcass percentage of buffalo (39.3%), Ongole crossbred cattle (45%), Madura cattle (47.2%), and Ongole cattle (48.8%), however it is slightly lower than the percentage of Bali cattle (56.9%) (Hendri, 2013). A high percentage of carcass indicates the ability to convert low-quality feed into meat. The average daily gain (ADG) of Pesisir cattle is still low, this is due to the quality of feed consumed by Pesisir cattle only comes from native grass.

 

Tithonia (Tithonia diversifolia) and calliandra (Calliandra calothyrsus) are foraging that have the potential to be used as food for ruminants (Trisnadewi et al., 2016; Arief et al., 2018, 2019; Jamarun et al., 2019). Apart from their abundant availability, these two plants also contain excellent nutrients, especially their high crude protein (CP) content. The CP content of tithonia is 22.95 % (Pazla et al., 2018a). Tithonia is a shrub that is very popular with goats. The use of tithonia in the Ettawa Crossbreed dairy goat ration can increase consumption, digestibility, production, and quality of milk (Jamarun et al., 2020a; Arief et al., 2020). Calliandra leaves contain about 20-25% crude protein (Djaja et al, 2007a). Calliandra has anti-nutritional substances in the form of tannins which result in low digestibility of nutrients (30-60%), but its use in rations is still safe if given to livestock around 30-40% (Djaja et al., 2007b). The combination of these two high-protein plants has never been studied before.

 

Cattle productivity is strongly influenced by the amount of feed and nutrients that can be used by cattle. However, not all of them are used, some are wasted through feces, urine, methane gas, and heat (Jamarun and Zain, 2013). Cattle absorb energy in feed especially for basic living. If there is excess energy, it will be used for production, but some of the energy absorbed in the body will be converted into body heat. Energy utilization is influenced by the quality of the intake, including the ratio of CP and energy or Total Digestible Nutrients (TDN). The need for feed CP-TDN ratio is greater in young ruminants that are growing rapidly (Nugroho et al., 2013). The asynchronous CP and TDN ratio show optimal rumen fermentation and the feed energy used for this process to be optimal (Ginting, 2005). So, it is significant to study how much energy can be used by livestock that is fed with different proportions of CP and TDN. The purpose of this study was to determine the ratio of CP and TDN inefficient feed for production in Pesisir cattle, by looking at the balance of protein and energy from the feed. This research can benefit as a reference material in the use of feed composition so that the energy utilization in the feed can be optimal for production. The hypothesis of this study is “The ratio of CP and TDN of different feed has an effect on the intake, nutrient digestibility, and production performance of Pesisir cattle”.

 

MATERIALS AND METHODS

 

The experimental cattle used in this research were 4 Pesisir cattle with an initial body weight of 118.13±13.13 kg, and an age of 1.5-2 years. Guideline for ethics study of experimental animals based on the law of the Republic of Indonesia number 18 of 2009 about Animal livestock and animal husbandry. The materials used in this experiment consist of tithonia and calliandra were taken from the Lubuk Sikarah, Payo, Solok city, West Sumatera. the in vivo test was carried out in the breeder’s pen, Talang Babungo, Solok Regency, West Sumatra. Analysis of the chemical composition of rations and feces was carried out based on the method of AOAC (2010). These Samples are tested in the Laboratory of Dairy Nutrition, Faculty of Animal Husbandry, Bogor Agricultural Institute, and analysis of the chemical composition of each ration constituent were carried out at the Quality Testing Center and Feed Certification, Bekasi. This study used male Pesisir cows with 4 different feed treatments with different CP and TDN proportions. The chemical composition of the feed ingredients for the rations and the composition of the ingredients of the treatment ration can be seen in Tables 1 and 2. Cattle are fed with complete rations with different feed ingredients compositions. The feed is given 2 times a day (07.00 AM and 3.00 PM). Water is given ad libitum. The chemical composition of the treatment rations is listed in Table 3. The equipment used is a place for feed and drinking water, a scale for weighing livestock, feed, equipment for making complete feed, a metabolic cage for feces collection, and equipment for feces collection.

 

Table 1: The chemical composition of the feed ingredients for the rations (% dry matter)

 

Chemical composition (%)	Native grass	Tithonia	Calliandra	Rice bran	SCPLW
Dry matter	30.40	18.40	33.47	90.60	11.10
Organic matter	89.85	86.61	94.64	90.80	86.09
Ash	10.15	13.39	5.36	9.20	13.91
Crude fat	1.63	5.80	2.83	15.50	20.00
Crude protein	11.98	19.35	19.93	11.46	19.67
Crude Fibre	27.39	19.40	32.43	15.08	10.4
EIWN	48.86	42.06	39.45	48.76	63.98
TDN	55.17	62.87	60.20	67.85	62.46
Ca	0.07	0.99	0.58	0.07	-
P	0.09	0.33	0.23	0.22	-

Note: SCPLW= Sugar cane processing liquid waste; EIWN: Extract ingredients without nitrogen.

 

Table 2: The ingredient composition of the treatments rations (% dry matter).

 

Ingredient composition (%)	Treatment (%)
	T1	T2	T3	T4
Native grass	54.5	54.5	54.1	51.6
Tithonia	10	20	30	40
Calliandra	30	20	10	0
SCPLW	5	5	5	5
Rice bran	0	0	0.4	2.9
Ultra mineral	0.3	0.3	0.3	0.3
Salt	0.2	0.2	0.2	0.2

Note: SCPLW: Sugar cane processing liquid waste.

 

This study was designed with a Latin square design into 4 (four) complete ration treatments with four ratios of CP and TDN. The details of each ratio of CP: TDN are as follows: T1= 14.45%: 57.53%; T2= 14.08%: 57.80%; T3= 13.38%: 58.12% and T4= 12.59: 58.56%. Four ratios of CP and TDN complete rations treatment can be seen in Table 4. The research procedure was carried out in 4 stages including the preparation, adaptation, introduction, and collection stages. The preparations made were the preparation of feed, cages, and tools, as well as research Pesisir cattle. Feed preparation includes the provision of feed ingredients, analysis of nutrient content of feed ingredients, preparation of complete feeds, and manufacturing of cockpit rations. The complete way of making a complete feed is that all feed ingredients are ground, each feed ingredient is weighed according to its proportion and mixed. The cages and equipment to be used for research are prepared and cleaned. The adaptation stage is carried out by adapting livestock to the environment and research feed. The research feed was given gradually so that the cows could consume all the research feed. At this stage, deworming is also carried out so that the research cows are not affected by worm parasites. The preliminary stage is an advanced stage after the adaptation stage. The preliminary stage lasts 14 days and aims to remove food debris in the digestive tract from the previous time. At this stage, the ability of livestock to consume feed is observed. At the end of the preliminary stage, the bodyweight of the livestock is weighed. The collection stage is the final stage, feed is given as much as 4% of the bodyweight of the livestock (according to the ability of the livestock) and the distribution is done twice a day, every morning (7:00 AM) and evening (3:00 PM) day, while drinking water is given ad libitum. Before feeding and drinking water in the morning, the remaining feed is weighed. Stool sampling for proximate analysis of each cow was carried out for 5 days. The method of collecting cattle feces is done by placed the cattle in a metabolic pen for 5 days.

 

Table 3: The chemical composition of the treatments rations (% dry matter).

 

Chemical composition	Treatment (%)
	T1	T2	T3	T4
Dry matter	31.01	30.99	31.49	31.39
Ash	6.98	7.44	7.9	8.42
Crude Protein	14.45	14.08	13.38	12.59
Crude fat	4.74	4.69	4.67	4.72
Organic matter	93.02	92.56	92.1	91.58
EIWN	45.89	46.13	46.39	46.65
TDN	57.53	57.80	58.12	58.56

Note: EIWN: Extract ingredients without nitrogen.

 

Every day, the collected feces are weighed. The method of taking the stool sample is that the feces from the collection for 5 days are mixed until evenly distributed, then 10% of the sample is taken, dried in the sun, then milled and taken to the laboratory for proximate analysis (AOAC, 2010). The data were analysed by analysis of variance. The differences that occur are tested by the Duncan multiple range test (Steel and Torrie, 2002). The method of calculating these parameters is as follows:

 

 

Table 4: The ratio of crude protein and TDN in the treatments rations.

 

Nutritional content (%)	Treatment (%)
	T1	T2	T3	T4
Crude protein	14.45	14.08	13.38	12.59
TDN	57.53	57.80	58.12	58.56

 

RESULTS AND DISCUSSION

 

Feed Intake

The result of the study of feed intake of Pesisir cattle-fed experimental diets is shown in Table 5. The results of statistical analysis showed that intake of dry matter, organic matter, and crude protein in cattle between treatments was significantly different (P<0.05). This means that the different CP and TDN Ratios in the treated feed affect the intake of dry matter, organic matter, and crude protein. This is because the composition and types of feed ingredients for the treatment rations are different. It is following the opinion of Mubarok (2008) that differences in feed ingredients can cause different feed palatability. According to Pond et al. (1995) and Reski et al. (2021), feed factors that influence intake levels to include particle size and palatability of feed ingredients.

 

Table 5: Effect of treatments on feed intake.

 

Parameters	Treatment (Kg/day)				SE
	T1	T2	T3	T4
Dry matter intake	3.52ab	3.53ab	3.74a	3.23b	0.14
Organic matter intake	3.17a	3.14a	3.25a	2.66b	0.12
Crude protein intake	2.03a	1.96a	2.08a	1.58b	0.01
TDN intake	2.15ab	2.16ab	2.30a	2.00b	0.08

a,b Significantly different a row (P<0.05).

 

The average dry matter intake of all treatments in this study was 3.23-3.74 kg/head/day (equivalent to 2.73-2.94% of the average body weight of livestock during maintenance). The dry matter intake in the current study was higher than the dry matter intake obtained by Usman et al. (2013), that the intake of dry matter in local cattle that received a balance of CP and TDN was 13.67%: 60% of 2.72 kg. It shows that the ability to consume research cows is better, due to good feed palatability. Arora (1995) states that dry matter intake of good quality feed can reach 3.5 percent of body weight, while intake of low-quality feed is limited to only 2 percent of body weight. The higher the level of feed digestibility the better the feed consumption. Therefore, the number of nutrients used for production is increased. Table 5 shows that there was no significant difference between treatments T1, T2, and T3 on feed intake, but there was a significant difference (P<0.05) between T4 and other treatments. T4 resulted in the lowest feed intake. The increase in the amount of tithonia from 10% (T1), 20% (T2) to 30% (T3) did not affect the palatability of the rations. However, the increase in tithonia to the amount of 40% (T4) decreased feed consumption. This is because the cattle begin to taste bitter due to the influence of the phytic acid contained in tithonia. Phytic acid is one of the most abundant antinutrient substances in tithonia. Increasing the amount of tithonia in the ration will of course also increase the phytic acid levels that will be consumed by livestock. Treatments T1, T2, and T3 are a combination treatment of tithonia and calliandra. The combination does not affect the amount of feed intake statistically, the use of calliandra which is one of the legume plants can make the flow rate of feed out of the rumen faster (Kusmartono, 2008). However, from the data, treatment T3, with the combination of 30% tithonia and 10% calliandra, has the highest feed intake, meaning that these rations are very palatable for Pesisir cattle. The reduction in the amount of calliandra in the rations from T1 treatment to T3 treatment shows an increasing trend in feed intake, this is because the ratio of tannin concentrations in calliandra is also decreasing, many tannins also cause a cold sense which is not liked by livestock. The impact of tannin antinutrients on ruminants begins with the mastication process, then the tannins will bind to salivary protein so that the feed becomes less palatable and result in a decrease in feed intake.

 

The energy (TDN) intake of all treatments can be seen in Table 5. The results of observations on the overall feed energy intake of male Pesisir cows show a significant difference (P<0.05). This was possible because the intake of dry matter in all treatments was significantly different (P<0.05). It is following the opinion of Kearl (1982) that the need for feed energy will increase with the increasing body weight of livestock.

 

Nutrient digestibility factors also affect the level of feed intake, T3 ratio has the best digestibility, so that food substances are digested more quickly and used for metabolism so the stomach will empty faster, which will automatically affect livestock to return to hunger and consume more rations.

 

Nutrient digestibility

The results of nutrient digestibility in this study can be seen in Table 6. The ratio of CP and TDN of feed to the digestibility of food substances in each treatment was significantly different (P<0.05). It is assumed that the digesting flow velocity and the amount of energy consumed by the treatments are also different. Arora (1995) stated that the difference in feed intake and palatability causes a difference in digesting flow velocity. Digesting flow velocity is defined as the time to eliminate 5-80% of undigested feed residue particles into feces. The difference between the number of substances consumed and those excreted in the feces does not always mean the same as the number of nutrients digested by ruminants (Arora, 1995). From the results of observations, the effect of different CP and TDN ratios on treated feed on digestibility of male Pesisir cattle from all treatments was significantly different (P<0.05). Descriptively, the highest digestibility of dry matter and organic matter was obtained in the T3 treatment (59.50% and 59.66%), then followed by T4 (57.78% and 59.23%), T2 (57.59% and 57.44%), and T1 (50.60% and 51.11%) may be due to the consumption of crude fiber at each different treatments causing differences in feed TDN that reflect the digestibility of nutrients. Pazla (2018) stated that more consumption of crude fiber will reduce the digestibility value of the feed. The CP and TDN ratio of 0.25 (14.45%: 57.53%) of feed decreased the digestibility than the ratio of 0.23 (13.38%: 58.12%). The results of this study are in line with the research of Purbowati et al. (2008) and Nugroho et al. (2013) which get an increase in the ratio of CP: TDN in the ratio decreases the digestibility of the feed.

 

Table 6: Effect of treatments on nutrient digestibility.

 

Parameter	Treatment (%)				SE
	T1	T2	T3	T4
Dry matter digestibility	50.60b	57.59a	59.50a	57.78a	1.60
Organic matter digestibility	51.11b	57.44a	59.66a	59.23a	1.25
Crude protein digestibility	59.88c	58.08c	75.83a	71.42b	0.96

a,b,c Significantly different a row (P<0.05).

 

The productivity of ruminants is often limited by the high content of anti-nutritional compounds, including tannins (especially condensed tannin), as reported by Makkar et al. (1995). Condensed tannin compounds have properties to bind to protein, peptide, ionic group, hydroxy group, an amide group from feed presented to livestock. The dominant bond in the tannin complex; protein is a hydrogen bond that occurs between a tannin carboxyl group with a very stable peptide bond in the pH range <3.0 and pH> 8.0 (Jones and Mangan, 1977). It means that in the rumen the tannin bonds and protein are very stable. It became unstable upon arrival at the abomasum, so this potential can be used as a protein protection strategy to obtain a high protein bypass value. Thus, it is expected that tannin source can increase the efficiency of using feed protein as well as livestock productivity (Ningrat et al., 2018, 2019, 2020). Condensed tannin (CT) in tithonia is 0.04% DM while calliandra is 6.14% DM (Kusmartono, 2008). Ruminants are very responsive to legumes containing tannins, especially if the positive impact is seen especially when the content does not exceed the rations (Barry, 1985). Tannin is a compound that can bind to compounds such as carbohydrates and proteins. The high level of calliandra in ration resulted in lower nutrient digestibility (P <0.05). It is assumed that the livestock is not sufficiently able to tolerate the anti-nutritional effect of calliandra, thereby reducing digestibility. Similarly, the opinion of Jamarun et al. (2020b) stated that antinutrients from feed ingredient will have a negative effect when it passes the optimum limit that can be tolerated by the livestock body.

 

Provision of concentrates containing high CP will activate rumen microbes that can increase proteolytic bacteria and deamination which improve the digestibility of the feed. The efficiency of microbial protein synthesis occurs when the available ammonia is followed by the availability of energy and carbon framework (Jamarun et al., 2017; Febrina et al., 2016). If the availability of ammonia is faster than carbohydrate fermentation, the ammonia used for the formation of microbial protein is inefficient. Ideal conditions for the formation of microbial protein will occur when a fermented carbohydrate source is available in line with a protein source (Christiyanto et al., 2005). Table 6 shows the rations T3 and T4 that got the composition of the rations containing rice bran showed a better clarity value than without the addition of rice bran.

 

Crude protein digestibility value is the percentage of crude protein consumed in the rations that are not present in feces. Crude protein digestibility is affected by the content of crude protein in the feed. Increased crude protein content in the ration will increase the rate of microbial reproduction and population rumen so that the digestibility becomes large (Jamarun et al., 2018). However, increased levels of protein rations that are not balanced with the provision of sufficient non-protein nitrogen levels cannot stimulate microbial growth in the rumen. Likewise, Teti et al. (2018) reported that the balance of protein and TDN will show efficiency optimal fermentation. Similarly, Parakkasi (1999) also stated that the addition of sources of protein cannot stimulate growth in rumen microbes without supplementation of dissolved carbohydrates. Also, Satter and Rofler (1975) state that high TDN on rations is generally more fermented than low TDN. Furthermore, Haryanto (2012) added that sync or balance between energy availability and protein in the rumen can increase microbial activity and enhance the synthesis of rumen microbial protein. In the current research, the rations of T1 treatment with a balance of CP and TDN 14.45%: 57.53%, and T2 with the balance of CP and TDN 14.08%: 57.80% results in better digestibility which is lower than the rations of T3 treatment with CP and TDN proportions of 13.38%: 58.12%, and T4 with the balance of CP and TDN 12.59%: 58.56%.

 

Production performances

The result of the study of average daily gain, feed conversion ratio, and feed efficiency of Pesisir cattle-fed experimental diets are shown in Table 7. Table 7 shows that the T3 treatment has the highest ADG (P<0.05). It increases body weight accompanied by a high consumption as well. The lowest ADG was in T1 treatments. Animal weight was always directly proportional to the level of feed intake. The higher the level of feed intake, the higher the body weight (Kartadisastra, 1997). Weight gain occurs when the feed consumed has exceeded the necessities of life, then the excess nutrients will be converted into the meat and fat tissue so that bodyweight gain becomes clearer (Williamson and Pane, 1993). Similarly, Kartadisastra (1997) demonstrated that if the amount of feed consumed is lower than their needs, the livestock will lose bodyweight.

 

Table 7: Effect of treatments on production performance.

 

Parameter	Treatment				SE
	T1	T2	T3	T4
ADG (Kg/day)	0.03c	0.21a	0.31a	0.08b	0.15
Feed efficiency (%)	0.78c	5.94a	8.36a	2.47b	4.39
Feed conversion	128.09c	16.82a	11.99b	40.41b	17.76

a,b,c Significantly different a row (P<0.05).

 

The ADG on T3 treatment is higher than the male Pesisir cows weaning off until the age of 2 years 0.21 kg/head/day, and the age of 3-4 years 0.12 kg/day, and it almost the same as the ADG from birth to weaning around 0.32 kg/day. The ADG in this study was lower than the Afdal and Khasrad (2006) which obtained ADG values of Pesisir cattle in the range of 0.58-0.80 kg/head/day. The high value is due to the TDN value of the rations given is 68% and experimental livestock experiences a compensatory growth effect.

 

Dry matter intake in treatment T4 (3.23 Kg) is not as high as in treatment T1 (3.53 Kg) but this is comparably inverted when viewed from the added weight body, wherein treatment T4 the weight gain body is greater compared with body weight gain in treatment T1. Consumption of high rations does not guarantee the increase of body weight too. Likewise, Usman et al. (2013), stated that not all of livestock that consume more rations will grow higher compared to those who consume fewer rations.

 

The treatment of T1 had the highest feed conversion compared to other treatments. However, when viewed from weight gain, treatment T1 has the weight gain lowest weight gain. Conversion value on ration T1 means to produce 1 kg of body weight per day required 128.09 kg of material dry ration. Then, the conclusions showed that giving treatment T1 ration did not produce good feed conversion. So, it can be concluded that the feed conversion in T1 treatment is not good because the feed is consumed a lot but less effective in the meat formation. The nutritional value of feed at treatment T1 ratio is low. Similarly, Jamarun and Zain (2013) demonstrated that the ability of livestock in converting feed into meat is very dependent on the quality of the feed especially the content of protein, energy, and crude fiber.

 

The lowest rations conversion value contained in treatment T3 with dry matter intake of 3.74 kg and body weight up to 0.31 Kg. A good ration conversion rate is when low ration consumption can increase high body weight gain. It is presumably due to the feed intake in treatment T3 has fulfilled the physiological needs of livestock with content protein and optimal energy. Therefore, feed conversion of livestock is low as it is expressed by Maynard and Loosli (1979), the higher nutritional value in rations will influence the low conversion ratio.

 

Ration conversion values in treatment T2 (16.82) and T4 (40.41) are poor conversion rates because dry matter intake of 3.53 Kg and 3.23 Kg only increase ADG by 0.21 Kg and 0.08 Kg. The research result indicates that the ration conversion in treatment T3 is lower than treatment T2 and T4. It can be concluded that the availability of the energy source in treatment T3 is more optimal for microorganisms in rumen activity that work optimally.

 

The best feed conversion was obtained at T3 treatment (P <0.05). This condition illustrates that the quality of this T3 ration is very good and suitable for livestock and has a good palatability value. Based on Church and Pond (1995) stated that feed quality will determine feed conversion. Also, good quality feed will result in high ADG. Feed conversion is influenced by cattle breed, genetics, cow condition, age, ADG, the ability of livestock to digest feed, feed palatability, type of feed ingredients, availability of nutrients in the ration, season conditions, and management (Pazla et al., 2018b; Suyitman et al., 2020; Jusman et al., 2020). Sugiharto et al. (2004) state that the feed conversion of cows that are fed locally according to the habits of farmers on dry land is 13.6, while the ideal feed conversion for beef cattle is 9 (Tillman et al., 1991).

 

Treatments T2 and T3 showed the best ratio of feed efficiency so that the ADG in this treatment was also higher than treatment T1 and T4. The ratio of protein and energy in treatment T2 and T3 was very optimal in affecting the performance of rumen microbes in degrading feed, thereby increasing feed efficiency (Pazla, 2015). The low feed efficiency in treatment T1 and T4 was due to the imbalance of crude protein and TDN content in the rations. Similarly, Ariesafera (2019) states that the CP and TDN ratio in the rations is closely related to feeding efficiency. Pesisir cow will consume feed efficiently if the CP and TDN ratio in the rations is balanced. The feed efficiency in this study was higher than the research of Jusman et al. (2020) which was 7.78% and lower than the research of Suyitman et al. (2020) which was 12.22%. This difference is caused by the type of cow, the type of feed ingredients for the ration, and the quality of the feed used.

 

CONCLUSIONS AND RECOMMENDATIONS

 

The best ratio of protein and energy to increase feed intake, nutrient digestibility, and production performance of Pesisir cattle was 13.38 %: 58.12 % (T3). This ratio is very efficient in increasing the productivity of Pesisir cattle so that it can provide benefits for cattle breeders.

 

ACKNOWLEDGMENTS

 

This research was supported by the research and community service institutions from Andalas University with grant number is T/5/UN.16.17/PT.01.03-Pangan-RT/2020, Fiscal Year 2020. The authors would like to thank the technical assistance of the staff in the Laboratory of Dairy Nutrition, Animal Science Faculty of Bogor Agricultural Institute who had been involved in helping in the analysis.

 

Novelty Statement

 

Research on protein and energy ratios based on Tithonia (Tithonia diversifolia) and calliandra (Calliandra calothyrsus) plants on consumption, digestibility and performance of Pesisir cattle has never been done by previous researchers. This study succeeded in finding a suitable ration formulation for fattening Pesisir cattle with the optimum ratio of TDN and crude protein to increase the productivity of Pesisir cattle.

 

AUTHOR’S CONTRIBUTION

 

Roni Pazla and Adrizal designed the study and conducted the in vivo experiment. Riesi Sriagtula performs the analysis in the laboratory. The draft article was written by Roni Pazla.

 

Conflict of interest

The authors have declared no conflict of interest.

 

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