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العنوان
PRODUCTIVE RESPONSES OF GROWING RUMINANTS FED ON SOME FEED ADDITIVES.
المؤلف
ABDEL RAHMAN, MAHMOUD ADEL ZAKI.
هيئة الاعداد
باحث / محمود عادل زكي عبد الرحمن
مشرف / أحمد عبد الله محمد مروان
مشرف / محمد على محمد عبد الفتاح
مناقش / إبتهاج إبراهيم محمدأبو العنين
تاريخ النشر
2022.
عدد الصفحات
81 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
علم الحيوان والطب البيطري
تاريخ الإجازة
1/1/2022
مكان الإجازة
جامعة عين شمس - كلية الزراعة - الإنتاج الحيواني
الفهرس
Only 14 pages are availabe for public view

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from 81

Abstract

Forty 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 group): Animals of T1 (control) were fed on a basal diet according to the farm feeding system regime while T2, T3 and T4 were fed as T1 plus 1 g of prebiotic (T2), 0.5 g of probiotic (T3) and 1 g of synbiotic (T4) /1Kg concent reate feed mixture. The aims of the experiment were to study the effect 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, ALT/AST 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, probiotic and then the control. These results indicate of 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 blood plasma total protein and reducing the levels of urea, creatinine, cholesterol, triglyceride and liver enzymes which affects the economic return of raising lambs.