Different Sources of Protein Effect in the Flushing Rations on some Blood Parameters and the Reproductive Performance of Ghezel Sheep
محورهای موضوعی : Camelح. دقیق کیا 1 , آ. احمدفاضل 2 , ع. حسین خانی 3
1 - Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
2 - Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
3 - Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
کلید واژه: reproductive performance, Ghezel sheep, protein degradability, flushing ration,
چکیده مقاله :
Sixty Ghezel ewes (age 3.5 years) were used to study the effect of different nitrogenous supplements in flushing ration on reproductive performance. Experimental treatments were divided in five groups: group A: urea; group B: soybean meal (SBM); group C: corn gluten meal (CGM); group D: barley grain and group E: control or basal diet (no flushing). The four flushing rations had nearly the same amounts of nitrogen and energy (crude protein (CP)=10.5% and metabolizable (ME)=2.1 Mcal/kg). CGM and control groups had the highest and lowest number of progeny, respectively (16 vs. 9 lambs). Flushing rations increased average blood glucose, insulin and blood serum protein compared to the control group; however, glucose, insulin, cholesterol and BUN reached their highest levels in SBM, CGM, barley and urea treatments, respectively. Using suitable protein sources especially bypass or rumen undegradable protein (such as CGM) in the flushing ration can improve the reproductive performance and herd recovery efficiency, maximizing profitability of sheep farming enterprise.
به منظور مطالعه اثر منابع مختلف مکملهای نیتروژنی در جیره فلاشینگ بر عملکرد تولیدمثلی، شصت میش قزل (5/3 ساله) مورد استفاده قرار گرفت. تیمارهای آزمایش به پنج گروه تقسیم شدند: گروه A: اوره؛ گروه B: کنجاله سویا (SBM)؛ گروه C: کنجاله گلوتن ذرت (CGM)؛ گروه D: دانه جو و گروه E: کنترل یا جیره پایه (بدون فلاشینگ). مقدار نیتروژن و انرژی در هر چهار گروه دریافتکننده جیره فلاشینگ تقریبا یکسان بود (پروتئین خام (CP)=5/10 درصد؛ انرژی قابل متابولیسم (ME): 1/2 Mcal/kg). گروه دریافتکننده کنجاله گلوتن ذرت و کنترل به ترتیب بالاترین و پائینترین تعداد بره متولد شده را داشتند (16 در مقابل 9 بره). در گروههای دریافتکننده جیرههای فلاشینگ، میانگین مقادیر گلوکز، پروتئین و انسولین سرم خون نسبت به گروه کنترل افزایش داشت؛ اما بیشترین مقادیر گلوکز، انسولین، کلسترول و BUN به ترتیب در تیمارهای دریافتکننده جیره با کنجاله سویا، گلوتن ذرت، دانه جو و اوره مشاهده شد. استفاده از منابع مناسب پروتئینی در جیره فلاشینگ مخصوصاً پروتئینهای عبوری یا غیر قابل تجزیه در شکمبه (نظیر کنجاله گلوتن ذرت)، میتواند باعث بهبود عملکرد تولیدمثلی و بهرهوری گله شده و سود پرورش دهندگان گوسفند را به بیشترین میزان خود برساند.
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