INFLUENCE OF PREBIOTIC, PROBIOTIC AND SYNBIOTIC SUPPLEMENTATION ON DIGESTIBILITY, HAEMOBIOCHEMICAL PROFILE AND PRODUCTIVE PERFORMANCE IN BARKI LAMBS

Abstract

SUMMARY orty growing Barki lambs of (3:4) months age and 34.97 kg average body weight were divided randomly into four equal groups (10 animals each): Animals of T1 (control) were fed on a basal diet according to the farm feeding system regime while T2, T3, and T4 (treated) were fed as T1 plus (for T2) 1 gm of powder (prebiotics) for every 1 kg of concentrate feed given to this group, for T3 0.5 g of powder (probiotics) per 1 kg of concentrate feed and T4 were received 1 g per 1 kg of concentrate feed. The aims of the experiment were to study the effects of some feed additives, especially prebiotics, probiotics, and synbiotics, as synthetic sources, on the productive performance and feed efficiency of growing Barki lambs length of the experiment period. The results showed that the highest significant value (P≤0.05) of DMI was recorded for T4, followed by T3, T2, and then T1, and a higher non-significant value of dry matter conversion (P≥0.05) was recorded for T4. The highest significant values of (DM, OM, CP, and NFE) were recorded for T4, followed by T3, T2, and then T1 and the highest non-significant values of CF and EE were noticed for T4. There were significant (P≤0.05) differences in Blood plasma total protein, albumin, globulin, urea, creatinine, and GPT, and insignificant (P≥0.05) differences in Blood plasma cholesterol, and triglycerides. Regarding growth performance and feed efficiency, the group that received synbiotic treatment T4 showed the highest values of daily gain (P≤0.05) and DM conversion followed by Prebiotic, Preobiotic, and then the control. These results indicate that the use of synbiotics or prebiotic or probiotic as an additives to conventional or industrial feed leads to an increase in growth performance and feed conversion efficiency, increasing the the blood plasma total protein and reducing the levels of urea, creatinine, cholesterol, triglyceride, and liver enzymes which affects the economic return of raising lambs. The average total DMI during entire the experimental period had a gradual significant increase (P≤0.05), in which the lowest value was recorded in the first period (1.46 kg/h/day), while the highest value was recorded in the sixth and last period (1.88 kg/h/day), also The highest significant value between the groups was recorded for T4 Followed by the prebiotic and probiotic groups. Due to the gradual increase in body weight. These results are in good agreement with those obtained by Estrada-Angulo et.al (2021) The experiment was conducted on forty male lambs of average initial weight (29.52 kg) for a period of 93 days. The groups were randomly divided into four groups (10 animals for each group). The first group (the control group) was fed a diet on the farm without any additions from the experimental treatments, while the experimental group was fed The second group (probiotics) was fed on the farm diet plus 3 gm of (live Saccharomyces cerevisiae/lamb/day) experimental treatment, while the third group (prebiotics) was fed on the farm diet plus 3 g of (mannan oligosaccharide plus b-glucan) experimental treatment -glucans/lamb/day) while the fourth group (synbiotic) was fed on the farm diet plus the experimental worker (1.5 g of live Saccharomyces cerevisiae/lamb/day) + (1.5 g of mannan oligosaccharide plus b-glucans/lamb/day). The results indicated that there were significant differences between the groups, and the highest rate of total dry matter intake (DMI) was recorded than the rest of the other groups. Also, Morrison et.al (2010) conducted an experiment that was randomly distributed to 80 calves (40 heifers and 40 bulls) with an average weight of 34 kg at 5 days of age. The groups were randomly divided into four groups (20 animals per group). The first group (control) was fed on the diet on the farm (mother milk + starter feed) while the second group (probiotics) was fed on the diet on the farm in addition to the experimental transaction of 10 g of Probiotics, non-significant values of CF and EE digestibility followed by T3, T2, and then T1. These results are in food agreement with those of Zapata et.al (2021) who that he conducted an experiment on four groups with a total of 12 male lambs with an average initial weight of 45.1 kg in order to evaluate the probiotic Saccharomyces cerevisiae or prebiotic mannan oligosaccharides + b-glucan alone or the probiotic and prebiotic together. The results indicated that the combination of prebiotics and probiotics enhance the overall digestion of nutrients, especially for lambs fed a high-energy diet . Moreover, Arabi et.al (2020) who fed hybrid lambs for a period of 90 days on different doses of synbiotics, respectively 2, 4, and 6g /h/day. The results indicated that the nutrition under treatment with synbiotic 6 g gives the highest digestibility of nutrients and other fibers insoluble compared to other groups. who conducted an experiment on 40 male lambs at an age of 4-5 months with an average initial weight of 30 kg for a period of 90 days. It was randomly divided into four replicate groups, each group containing 10 repetitions of lambs fed on the diet on the farm in addition to the experimental treatments. The first group (control group) was fed the diet without any experimental treatments, while the second group was fed the diet plus 5 grams of probiotics per head/daily, while the third group was fed the diet plus 2 grams of prebiotics per head/daily, while the fourth group was fed on the diet plus 5 grams of synbiotics. The results indicated that the highest value was recorded for the synbiotic group, followed by prebiotics and probiotics and then the control group.