سطح بالای موننسین برای گاوهای شیری در اواسط شیردهی:قابلیت هضم مواد مغذی، تخمیر شکمبه و سنتز پروتئین میکروبی
Subject Areas : Camelجی.ر. گاندرا 1 , جی.ای. فریتاس جونیور 2 , م. ماتورانا فیلهو 3 , ر.و. بارلتا 4 , ل.ن. رنو 5 , سی.اس. تاکیا 6 , ف.پ. رنو 7
1 - Department of Animal Science, School of Agrarian Science, Federal University of Grande Dourados, Rodovia Dourados-Itahum, Dourados, Brazil
2 - Department of Nutrition and Animal Production, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga, Brazil
3 - Department of Nutrition and Animal Production, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga, Brazil
4 - Department of Nutrition and Animal Production, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga, Brazil
5 - Department of Animal Science, Federal University of Viçosa, Viçosa, Brazil
6 - Department of Animal Science, School of Agrarian Science, Federal University of Grande Dourados, Rodovia Dourados-Itahum, Dourados, Brazil
7 - Department of Animal Science, School of Agrarian Science, Federal University of Grande Dourados, Rodovia Dourados-Itahum, Dourados, Brazil
Keywords: افزودنی, ضد میکروب, فیبر غیرقابل هضم در شوینده اسیدی, یونوفور, مشتقات پورینی,
Abstract :
هدف از این مطالعه بررسی قابلیت هضم مواد غذایی، تخمیر شکمبه و سنتز پروتئین میکروبی در گاوهای اواسط دوره شیردهی بود که با سطح بالای موننسین تغذیه شدند. دوازده گاو هلشتاین به چهار مربع لاتین 3 × 3 توزیع شدند و به تیمار های: شاهد (CON)، موننسین 24 (M24، افزودن 24 میلیگرم موننسین/کیلوگرم ماده خشک جیره) و موننسین 48 (M48، افزودن 48 میلیگرم موننسین/کیلوگرم ماده خشک جیره) تقسیم شدند. سطوح موننسین در جیره به طور خطی سبب کاهش مصرف ماده خشک بدون تغییر در قابلیت هضم ظاهری کل مواد مغذی شد. موننسین به طور خطی pH مایع شکمبه و غلظت استات را افزایش داد. موننسین به طور درجه دوم کل اسیدهای چرب با زنجیره کوتاه شکمبه، غلظت پروپیونات، استات و تولید پروپیونات و نسبت استات به پروپیونات را تحت تأثیر قرار داد. علاوه بر این، موننسین به طور خطی بازده سنتز پروتئین میکروبی را افزایش داد.
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