ighteen growing Ossimi lambs (28.92 kg average live body weight and 6-7 months old) were used to evaluate incorporating thyme essential oil (TEO) in ration on nutrients digestibility and growth performance. In growth trial lasted 90 days followed by digestibility trial for 14 days, the lambs were randomly divided according to their live body weight into three feeding groups (6 each).Total mixed ration consisted of 60% concentrate: 40% roughage was offered to lambs in all groups to cover its total requirements. Whereas, there was no TEO in the control feeding group, R1, while R2 and R3 were supplemented with 0.1 and 0.2% TEO from DM intake, respectively. Data of nutrients digestibility indicated that incorporating TEO in both of R2 and R3 significantly (P<0.05) increased digestibility of DM, OM, CP, EE and NFE. While, EE digestibility was only significantly (P<0.05) increased in R3 compared with R1. The same trend was observed for nutritive value either as TDN or DCP, whereas it was significantly (P<0.05) improved with R2 and R3 compared with R1.There were no adverse effects for thyme oil supplementation on rumen pH, but significant (P<0.05) decreased rumen ammonia concentration and increased the rumen volatile fatty acids compared with control group. As a result of this improvement in nutritive value, the highest significant (P<0.05) body weight gains were recorded with R3 (200 g/h/d) followed by R2 (187 g/h/d) compared to 160 g/h/d for R1. So, it can be concluded that incorporating thyme essential oil in growing lambs ration by either 0.1 or 0.2% from DM intake improved both of nutrients digestibility and growth performance.
he present study was performed to evaluate the potential use of probiotics for improving semen quality of mature NZW rabbits. Twenty adult male NZW rabbits were assigned randomly into four equal groups that were fed four experimental diets for eight weeks. All experimental groups were fed a uniform rabbits pelleted diet, where (R1) diet without addition (control), (R2) diet added with 0.1 % Bacillus subtilis, (R3) diet added with 0.1 % live Saccharomyces cerevisiae and (R4) diet added with 0.05 % Bacillus s. +0.05 % Saccharomyces c. Semen samples were collected at 5 th , 6 th , 7 th and 8 th weeks of the experimental period from all tested rabbits to evaluate ejaculate volume, total sperm output, sperm cell concentration, advanced sperm motility, sperm abnormalities, dead spermatozoa, testosterone level, initial fructose concentration and reaction time(Libido).Results obtained revealed that adding probiotics to the diet of NEW rabbit bucks improved (P> 0.05) their productive capability of male rabbit. Physical semen characteristics, blood testosterone level and initial fructose as well as the reaction time (Libido) were improved with supplemented diets, however these improvements for all parameters were associated with feeding the diet supplemented with Bacillus s. + Saccharomyces c. mixture. Therefore, it can be concluded that adding diet of buck with mixed probiotics culture of Bacillus s. and Saccharomyces c. in a ratio of (50:50 %) improved semen quality and reproductive performance.
SUMMMARYighteen growing Ossimi lambs (28.92 kg average live body weight and 6-7 months old) were used to evaluate incorporating thyme essential oil (TEO) in ration on nutrients digestibility and growth performance. In growth trial lasted 90 days followed by digestibility trial for 14 days, the lambs were randomly divided according to their live body weight into three feeding groups (6 each).Total mixed ration consisted of 60% concentrate: 40% roughage was offered to lambs in all groups to cover its total requirements. Whereas, there was no TEO in the control feeding group, R1, while R2 and R3 were supplemented with 0.1 and 0.2 TEO from DM intake, respectively. Data of nutrients digestibility indicated that incorporating TEO in both of R2 and R3 significantly (P<0.05) increased digestibility of DM, OM, CP, EE and NFE. While, EE digestibility was only significantly (P<0.05) increased in R3 compared with R1. The same trend was observed for nutritive value either as TDN or DCP, whereas it was significantly (P<0.05) improved with R2 and R3 compared with R1.There were no adverse effects for thyme oil supplementation on rumen pH, but significant (P<0.05) decreased rumen ammonia concentration and increased the rumen volatile fatty acids compared with control group. As a result of this improvement in nutritive value, the highest body weight gains were recorded with R2 and R3 (187 and 200 g/h/d) compared to 160 g/h/d. for R1. So, it can be concluded that incorporating thyme essential oil in growing lambs ration by either 0.1 or 0.2% from DM intake improved both of nutrients digestibility and growth performance.
Background Dromedary camels could be a successful and economic meat provider in poor greenery lands where feeds and water are scarcely available. Moreover, camels need lower amounts of protein in their rations than other ruminants, since they have an exceptional ability to recycle urea as a source of nitrogen when dietary protein is unavailable. The present preliminary study aimed to detect influence of feeding all roughage ration on growth performance of growing camels in comparison with cow calves and their response to the abrupt change into 50% roughage ration fed in the fed-lot condition. Results The results illustrated that with feeding 100% R ration camels could utilize available nutrients better than calves, and although the maintenance level of CP was not met for both species, camels exert higher resistance in losing weight than calves (− 93.7 vs. − 160.7 g/d). Shifting camels and calves on 50% R ration showed nearly similar nutritive values and comparable daily weight gain (942.75 g for camels and 968.50 g for calves). Feed conversion efficiency as Mcal ME and g DCP/kg gain was, respectively, 18.39 and 527 for camels and 18.42 and 555 for calves. Blood serum biochemical constituents were improved with 50% R than 100% R ration particularly for calves. Blood protein of camels was not influenced by changing ration. Urea concentration was higher in camel’s blood than calves with either 100% or 50% R rations. Camels clearly had lower contents of cholesterol and triglycerides than calves under the two feeding regimes. Conclusion The results revealed that growing camels could utilize the 100% R ration of very low protein content more efficiently than cow calves and had similar growth rate as that of calves with the 50% R ration.
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