1دانش آموخته کارشناسی ارشد تغذیه دام، بخش مهندسی علوم دامی، دانشگاه شهید باهنر کرمان، کرمان، ایران.
2استادتمام بخش مهندسی علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ایران.
3دانشیار بخش مهندسی علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ، ایران.
4استادیار،بخش مهندسی علوم دامی، دانشگاه شهید باهنر کرمان، کرمان، ایران.
5دانشیار بخش مهندسی علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران.
6دانش آموخته دکتری تغذیه دام، بخش مهندسی علوم دامی، دانشگاه شهید باهنر کرمان، کرمان، ایران.
چکیده
در این پژوهش تاثیر گنجاندن سطوح متفاوت ساقه خشک گیاه ترخون به‌جای یونجه و کاه گندم در جیره گوسفند بر مصرف خوراک، گوارش‌پذیری جیره، سنتز پروتئین میکروبی و فراسنجه‌های خون و شکمبه با استفاده از چهار رأس گوسفند نر کرمانی با میانگین وزن اولیه 2±45 کیلوگرم و سن تقریبی سه سال در قالب طرح مربع لاتین چرخشی با چهار دوره 21 روزه بررسی شد. جیرههای آزمایشی شامل: 1- جیره شاهد (بدون ساقه ترخون)، 2- جیره دارای هشت درصد ساقه ترخون، 3- جیره دارای 16 درصد ساقه ترخون و 4- جیره دارای 24 درصد ساقه ترخون بودند. مصرف خوراک و گوارش‌پذیری ماده خشک، ماده آلی و پروتئین خام جیره در این پژوهش تحت تأثیر تغذیه ساقه ترخون قرار نگرفت. مقادیر نیتروژن مصرفی، نیتروژن دفعی از طریق ادرار و مدفوع، مقدار و درصد نیتروژن ابقاء شده، میزان pH، نیتروژن آمونیاکی، جمعیت کل تک یاختهها و اسیدهای چرب فرار مایع شکمبه نیز تحت تأثیر جیرههای آزمایشی قرار نگرفتند. با تغذیه سطوح متفاوت ساقه گیاه ترخون، سنتز پروتئین میکروبی و غلظت گلوکز، کل پروتئین، نیتروژن اورهای، تری گلیسیرید و کلسترول خون نیز بدون تغییر باقی ماند. بر اساس نتایج حاصل، از ساقه گیاه ترخون می‌توان تا 24 درصد ماده خشک جیره به‌جای یونجه و کاه گندم در تغذیه گوسفندان بدون تأثیر بر تخمیر شکمبه، فراسنجه‌های خون و مصرف خوراک استفاده کرد.
1Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
2Department of Animal Science
Faculty of Agriculture
Shahid Bahonar University of Kerman
3Reza Tahmasbi (PhD)
Associate Professor
Department of Animal Science
Faculty of Agriculture
Shahid Bahonar University of Kerman
Kerman, Iran
4Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
5Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
6department of animal science, faculty of agriculture, young researcher society, shahid bahonar university of kerman, kerman
چکیده [English]
The effects of replacement of alfalfa hay and wheat straw with different levels of tarragon plant stalk (TPS) on feed intake, digestibility, microbial protein synthesis, and blood and rumen parameters of sheep were investigated using four Kermani male sheep (BW= 45±2 kg) with approximately three years old in a Latin square design with four 21-day periods. The experimental diets were: 1) control diet (without TPS), 2) diet containing 8% TPS, 3) diet containing 16% TPS and 4) diet containing 24% TPS (DM basis). Dry matter intake, and dietary digestibility of DM, OM and CP were not affected by feeding of TPS in the present research. The amounts of nitrogen intake, nitrogen excreted in the urine and feces, the amount and percentage of retained nitrogen, ruminal pH, ruminal concentrations of NH3-N and volatile fatty acids, and protozoa population were not affected by experimental diets. Feeding different levels of TPS had no effect on, microbial protein synthesis, and concentrations of blood glucose, total protein, urea nitrogen, triglyceride and cholesterol. Results of this study showed that tarragon plant stalk could be replaced with alfalfa hay and wheat straw up to 24% (DM basis) in sheep diet without any effect on ruminal fermentation, blood parameters or feed intake.
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