Effect of different dietary protein sources on digestibility and growth performance parameters in lambs (original) (raw)
Related papers
Performance of lambs fed alternative protein sources to soybean meal
Revista Brasileira de Zootecnia, 2016
The objective of this study was to evaluate the effect of alternative protein sources (castor bean cake, sunflower cake, and sunflower seed) to soybean meal on the intake and performance of 40 lambs, initially weighing 19.8±1.84 kg, fed diets based on Tifton grass hay. The experimental design was completely randomized blocks. There were no differences in the nutrient intake of castor bean diets compared with soybean meal. The intake of nutrients in the sunflower cake and sunflower seed diets was decreased compared with soybean meal. The apparent digestibility coefficients of dry matter, organic matter, crude protein, and neutral detergent fiber of sunflower cake and sunflower seed diets were decreased compared with soybean meal. The average daily weight gain of animals fed the castor bean diet (0.190 kg) was not different from that of the animals fed the soybean meal diet (0.217 kg). The sunflower cake and sunflower seed diets provided less weight gain (0.171 and 0.135 kg d-1 , respectively) than soybean meal due to the lower nutrient intake. The hot carcass yield and true yield were not affected by the protein sources. The neck, ribs, and ham weights were similar in lambs fed soybean meal and castor bean cake diets. It is recommended to use castor bean as an alternative protein source in the diet of lambs.
2017
The objectives of this study were to determine the effects of diet with increasing dietary levels of crude protein (CP) on digestibility, rumen pH, growth performance, volatile fatty acids (VFAs) and ammonia nitrogen (NH3-N), and on several blood parameters (serum urea, glucose and total protein), in the finishing period of Bafra lambs. Thirty male Bafra lambs, which were 3-3.5 months of age and average live weight of 24±0.4 kg, were divided into three groups (n=10 lambs per group) in a completely randomized design experiment. The diets were composed of 80% compound feed containing 11, 14 or 17% CP and 20% vetch straw. Lambs were fed ad libitium twice each day during the feeding trial period of 60 days. In the last week of the feeding period, all feces were collected to determine digestibility. The rumen and blood samples were collected at the end of the feeding period. The average feed intake was similiar among all tested diets. The best feed conversion rate was recorded the 17% CP...
scienceline, 2021
Crude protein content in animal diet is considered the first important factor for nutritionists when they start to formulate a diet for different types of animals. Therefore, this experiment was conducted to investigate the effect of substituting soybean seed meal by different protein sources on lamb's diet in terms of nutrients digestibility, and growth performance. Therefore, four tested concentrate feed mixtures (CFM, 14% crude protein) were designed. The CFM1 contained soybean meal as the only source of protein, and 50% of soybean meal protein was replaced by either sunflower meal, sesame seed meal, or black seed meal in CFM2, CFM3, and CFM4 groups, respectively. A total of 28 growing Barki male lambs aged 6 months with an average body weight of 38.6 ± 0.4 Kg were used in feeding trials for 120 days. Depending on their body weight, lambs were divided into four groups (7 animals in each). Each group fed on one of the experimental diets, including D1 (CFM1+ clover hay), D2 (CFM2 + clover hay), D3 (CFM3 + clover hay), and D4 (CFM4 + clover hay). Results of digestion coefficients indicted that the digestibility of crude protein and the nitrogen-free extract was significantly higher for D1 and D4, compared to D2 and D3. The same trend was observed in nutritive values expressed as total digestible nutrients (TDN) and digestible crude protein (DCP), whereas the D1 and D4 recorded higher TDN and DCP, compared to D2 and D3. Results of rumen parameters demonstrated that there were insignificant differences among groups regarding the average pH, ammonia (NH3-N), and total volatile fatty acids (TVFAs). Data of growth performance indicated that the final live body weight, total body gain, and average daily gain of lambs feed D4 (56.75 kg, 18.62 kg, and 155 g, respectively) and D1 (56.62 kg, 17.60 kg, and 147 g, respectively) were higher than those for lambs fed D2 (53.40 Kg, 14.64 kg, and 122 g, respectively) and D3 (53.11 kg, 14.61 kg, and 122 g, respectively). The feed conversion ratio (feed/gain) was recorded better value with lambs fed D4 followed by that fed D1. In conclusion, black seed meal could be replaced with the 50% of soybean meal participation of protein in growing Barki lambs' diets without any adverse effects on digestibility, rumen kinetics, and growth performance.
Semina: Ciências Agrárias, 2017
The study evaluated the effects of dietary protein-energy supplementation on feed intake, ingestive behavior, rumen parameters and nutrient digestibility in lambs. Four castrated lambs with 31.9 kg mean body weight and fistulated rumen were tested. distributed into latin square design (4x4), four treatments were tested over four periods of time: no supplementation (control) or with supplementation at 8, 16 and 24 g kg-1 body weight. The supplement (soybean meal, soybean hulls, ground corn and minerals) was provided with roughage (Tifton Bermudagrass, Cynodon spp., hay), which was offered ad libitum once a day, at 8h00. In treatments receiving 0 (control), 8, 16 and 24 g kg-1 supplementation, dry matter intake was 685.26, 742.86, 842.51 and 1013.33 g day-1, crude protein intake was 80.18, 95.98, 118.64, 150.14 g day-1 and metabolizable energy intake 1.55, 1.91, 2.31 and 2.98 g day-1, respectively. Treatments receiving the highest supplementation levels spent less time with rumination...
This study was conducted to investigate the effect of feeding dry rumen content (DRC) at different levels on nutrient intake, digestibility and growth performance of Awassi lambs. Twelve Awassi lambs (22.27±0.25 kg body weight and 4 months old) were randomly allotted into four diets for 65 days. The DRC was included in the diets at 0 % (DRC0), 10% (DRC10), 20% (DRC20), 30% (DRC30) to replace parts of the barley grain and soybean meal in the concentrate diet. On the day 60 of the experimental period, all lambs were fitted with fecal collection bags to evaluate the nutrient digestibility. Intake of dry matter (DM), organic matter (OM) and Metabolizable energy (ME) were not affected (P>0.05) in lambs fed DRC10 and DRC20 diets compared to those fed DRC0 (control) diet but decreased (P<0.05) in lambs fed DRC30 diet. Intake of CP (g/day) was higher (P<0.05) in lambs fed DRC10 and DRC20 diet than those fed DRC30 diet, but not significant difference (P>0.05) than those fed control one (DRC0) while, intake of CP (g/kg W0.75) did not differ (P>0.05) among diets. Intakes of neutral detergent fiber (NDF) and acid detergent fiber (ADF) were highest (P<0.01) for lambs fed the DRC30 diet followed by the DRC20 and DRC10 than those fed DRC0. No significant different in DM, OM, CP, NDF and ADF digestibility. Total gain and average daily gain (ADG) in lambs fed DRC10 and DRC 20 diets were not significant (P>0.05) different as compared with lambs fed DRC0 (control) diet but they were decreased (P<0.05) when lambs fed DRC30 diet. Lambs fedDRC10 diet was higher(P<0.05) in feed efficiency than those fed DRC30, but no significant (P>0.05) difference than those fed DRC0 and DRC20 diets. It could be concluded that feeding Awassi lambs diets containing DRC up to 10% improved growth performance without any adverse effect on nutrient digestibility or animal health.
Summary. e influence of protein sources alternative to soybean was evaluated for feeding “Gentile di Pu-glia” breed lambs. e lambs were fed pelletted diets containing alternatively: a) soybean b) faba bean; c) lupin or d) pea. Lambs fed the faba bean diet showed the greatest slaughter weight and a better carcass conforma-tion; however, the carcasses were significantly fatter than those obtained from soybean fed lambs. e protein source did not affect the incidence of the different meat cuts of the half carcass with exception for the loin, that was higher in lambs fed with pea in comparison with those fed the lupin and soybean diets. e blood cholesterol level was lowered following feeding with faba bean as compared to the soybean and pea groups. In conclusion, the protein sources tested, with particular concern for faba bean, may effectively replace soybean in feeding for fattening lambs.
Tropical Animal Health and Production, 2010
Thirty-six Thalli male growing lambs were used in a completely randomized design with 2 × 2 factorial arrangement of treatments to evaluate the effect of varying levels of energy and protein on nutrient intake, digestibility, weight gain, and gain to feed ratio. Four experimental diets, i.e., low energy–low protein (LE-LP), low energy–high protein (LE-HP), high energy–low protein (HE-LP), and high energy–high protein (HE-HP) were formulated. The low- and high-energy diets contained 2.3 and 2.7 MJ/kg dry matter (DM) with 12% and 14% of crude protein. The lambs were fed ad libitum. Dietary energy and protein levels and their interactions influenced the nutrient intake. Maximum dry matter intake was noted in animals fed LE-HP diet followed by LE-LP, HE-HP, and HE-LP diets. Digestibility of DM and N increased (P P P P
The Iraqi Journal of Agricultural science, 2021
Twenty one Awassi lambs (4 month old and 23.59 ± 031 kg body weight) were used to investigate the effect of different levels of protein on growth, carcass traits, body composition, digestibility and some blood parameters. The lambs were divided equally and randomly and penned individually into three treatment groups, and fed ad lib on low protein (129.1 T 1) medium protein (140.6 T 2) and high protein (151.1 T 3 , g/kg DM). After 72 days of fattening, 5 lambs from each treatment were chosen randomly and slaughtered. The result showed that lambs fed on T 3 diet had significantly (P<0.05) higher daily gain (210.83 g), better feed efficiency (4.8 kg/kg), higher dressing percentage (51.67 %), and rib eye area muscle (12.05 cm 2) than those fed in T 2 and T 3 , as well as digestibility coefficient of dry matter, organic matter, crude protein, and total digestible nutrient (TDN) was also numerically higher in group fed (151.1 g/kg DM) as compared with lambs received low or medium level of protein. It could be concluded that the high dietary protein level produce the better performance, carcass traits and nutrient digestion of lambs.
Effect of Protein Levels and Degradability in The Ration on Awassi Lambs Performance
Forty eight individually fed Awassi male lambs weighing 26.5 kg ± 1.1 and 5 months of old were used to investigate their responses to feeding concentrate diets containing three levels of dietary crude protein (CP, 11.5, 13.5 and 15.5%). Each level was formulated with high and low rumen degradable N (RDN) to undegradable dietary N (UDN) ratios. Concentrates were offered once a day at rate of 3% of live body weight with free choice of barley straw. Results revealed that neither straw nutrient intakes, nor the total intake were significantly affected by increasing levels of dietary CP or RDN: UDN ratios, However, total nitrogen (N) intake was increased significantly (P<0.01). Better intakes of digestible dry matter (DDM) and organic matter (OM) were achieved (P<0.05) by lambs fed the medium level of dietary CP. Body weight gain was not significantly affected by RDN:UDN ratio, However, lambs fed medium and high levels gained higher (P<0.05) than those fed the low level of dietary CP. Feed conversion ratio (FCR) based on DM and OM intakes was not significantly affected by level of dietary CP or RDN:UDN ratio, Even though, less amount of N required per unit of gain was achieved with low and medium as compared to high levels. Higher DM, nitrogen free extract (NFE) and hemicelluloses (P<0.05), OM, CP, crude fiber (CF) and cellulose (P<0.01) digestibility's were achieved by lambs fed the medium level of CP, whereas, no significant effect was observed on ether extract (EE), neutral detergent fiber (NDF) and acid detergent fiber (ADF) digestibility's. Lambs fed diets formulated with low RDN: UDN ratio digested its dietary nutrients at higher rate than those fed diets formulated with the high ratio .In conclusion, effect of interaction between levels of dietary CP and RDN: UDN ratio revealed that productive parameters of lambs fed diets containing medium level of CP and formulated with low RDN: UDN ratio was somewhat tended be better.