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تأثیر تغذیة سیلاژ خارشتر با خرمای ضایعاتی بر قابلیت هضم، تخمیر‌، جمعیت پروتوزوآیی و سنتز پروتئین میکروبی در گوسفند

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد علوم دامی دانشگاه کرمان

2 دانشیار، بخش مهندسی علوم دامی دانشگاه شهید باهنر کرمان

3 استادیار، بخش مهندسی علوم دامی دانشگاه شهید باهنر کرمان

چکیده

آزمایش به منظور بررسی تأثیر تغذیة سیلاژ خارشتر با خرمای ضایعاتی بر ابقای نیتروژن، تخمیر و سنتز پروتئین میکروبی در گوسفند انجام شد. برای تهیة سیلاژ، 100 کیلوگرم خارشتر با 20 کیلوگرم خرما 45 روز سیلو گردید. جیره‏های آزمایشی دارای 0، 7، 14 و 21 درصد سیلاژ خارشتر با خرمای ضایعاتی بودند. از 4 رأس گوسفند نر در قالب طرح چرخشی در 4 دوره 21 روزه استفاده گردید. سیلوکردن خارشتر با خرمای ضایعاتی سبب افزایش پروتئین خام و چربی سیلاژ شد (05/0P<). قابلیت هضم ظاهری پروتئین خام جیره‏های آزمایشی با افزودن سیلاژ خارشتر دارای خرمای ضایعاتی کاهش یافت (05/0>P). مصرف نیتروژن، نیتروژن هضم و ابقاشده در گوسفندان تغذیه‌شده با جیرة دارای 21 درصد سیلاژ خارشتر بیشترین مقدار بود (05/0P<). با افزایش سطح سیلاژ خارشتر در جیره‏ها آلانتوئین دفعی و میزان نیتروژن و سنتز پروتئین میکروبی به‌صورت خطی افزایش یافت (05/0P<). بیشترین جمعیت کل پروتوزوآ و گونه‏های انتودینیوم در مایع شکمبه با 21 درصد سیلاژ خارشتر مشاهده شد (05/0P<). بنابراین با توجه به بهبود تعادل نیتروژن و افزایش پروتئین میکروبی با تغذیة 21 درصد سیلاژ خارشتر با خرمای ضایعاتی، می‏توان بدون تأثیر منفی بر عملکرد حیوانات از آن در جیرة دام‏ها استفاده کرد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Feeding Alhagi with Waste Date Palm Silage on Rumen Parameters and Microbial Protein Synthesis in Sheep

نویسندگان [English]

  • Kadije Karamshahi 1
  • Omid Dayani 2
  • Reza Tahmasbi 3
  • Amin Khezri 3
1 M.Sc. student, Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Iran
2 Associate Professor, Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Iran
3 Assistant Professor, Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Iran
چکیده [English]

The effects of ensiling Alhagi with waste date Palm on rumen parameters and microbial protein synthesis in Kermani sheep were investigated. 100 kg Alhagi with 20 kg waste date Palm were mixed and ensiled for 45 d. The experimental diets containing 0, 7, 14 and 21% Alhagi with waste date Palm silage. Four male kermani rams were used in change over design with four 21-days period. Ensiling alhagi with waste date Palm increased crude protein and fat percentages (P<0.05). Apparent digestibility of crude protein was decresed by increasing the level of ensiled alhagi with waste date Palm (P<0.05). The amounts of nitrogen intake, digested nitrogen and retained nitrogen in sheep fed 21% of ensiled alhagi with waste date Palm were higher (P<0.05). Eexcretion of allantoin, purine derivatives and microbial protein synthesis were increased linearly in response to increasing level of ensiled alhagi with waste date Palm.Total protozoa population and Entodinium species per ml rumen liquid changed quadratically (P<0.05). In conclusion, due to nitrogen balance improvement and increased microbial protein in diet containing 21% ensiled alhagi with waste date palm; it can be fed to animals without any negative effect on their performance.

کلیدواژه‌ها [English]

  • Alhagi with Waste Date Palm Silage
  • Nitrogen Retention
  • purine derivatives
  • microbial protein synthesis
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