اثرات تکمیل جیره‌ با کنجاله سویای فرآوری شده با زایلوز یا کنجاله گلوتن ذرت فرآوری نشده در گاوهای شیری شیرده

Subject Areas : Camel

M.  Jahani-Moghadam ¹ (Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran)
E.  Mahjoubi ² (Department of Animal Science, University of Zanjan, Zanjan, Iran)
H.  Amanlou ³ (Department of Animal Science, University of Zanjan, Zanjan, Iran)
S.  Mohammadi ⁴ (Department of Animal Science, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran)

Received: 2015-08-12 Accepted : 2015-08-12 Published : 2015-06-01

Keywords: عملکرد, سود, کنجاله گلوتن ذرت, اوایل دوره شیردهی, کنجاله سویای فرآوری شده با زایلوز,

Abstract :

این آزمایش به منظور مقایسه این‌که تغذیه کدام یک از کنجاله سویای فرآوری شده با زایلوز یا کنجاله گلوتن ذرت در شرایط مزرعه‌ای بهتر است، انجام شد. 94 رأس گاو هلشتاین چند شکم زایش کرده در اوایل دوره شیردهی در قالب یک طرح کاملاً تصادفی مورد استفاده قرار گرفتند. گاوها به طور تصادفی به یکی از دو تیمار (1) کنجاله گلوتن ذرت یا (2) کنجاله سویای فرآوری شده با زایلوز به عنوان منبع اصلی پروتئین غیر قابل تجزیه در شکمبه در جیره غذایی اختصاص یافتند. مصرف ماده خشک، تولید شیر و شیر تصحیح شده بر اساس 5/3 درصد چربی تحت تأثیر تیمارها قرار نگرفتند. یک تمایل به معنی‌داری برای نسبت بالاتر تولید شیر تصحیح شده بر اساس 5/3 درصد چربی: ماده خشک مصرفی (57/1 در برابر 47/1) و درآمد: هزینه (97/1 در برابر 83/1) در تیمار 1 مشاهده شد. نیتروژن اوره‌ای شیر (89/15 در مقابل 16/15 میلی‌گرم در دسی‌لیتر) برای تیمار کنجاله سویای فرآوری شده با زایلوز بالاتر بود. گلوکز پلاسما، اسیدهای چرب غیر استریفیه شده، بتاهیدروکسی بوتیریک اسید، آلبومین، کل پروتئین و نیتروژن اوره‌ای خون بین تیمارهای مختلف تفاوت معنی‌داری نداشتند. این نتایج نشان می‌دهد که تحت شرایط مزرعه‌ای و مواد خوراکی به کار رفته در این مطالعه، تغذیه کنجاله گلوتن ذرت در اوایل دوره‌ی شیردهی از لحاظ اقتصادی سودمند است، که در تقابل با باورهای مرسوم است.

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