نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد تغذیه دام، بخش مهندسی علوم دامی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

2 استادتمام بخش مهندسی علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ایران.

3 دانشیار بخش مهندسی علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ، ایران.

4 استادیار،بخش مهندسی علوم دامی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

5 دانشیار بخش مهندسی علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

6 دانش 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.

کلیدواژه‌ها

عنوان مقاله [English]

Feed intake, diet digestibility, nitrogen retention, microbial protein synthesis, and blood and rumen parameters in sheep fed with tarragon stalk

نویسندگان [English]

  • mahdieh mahdizade 1
  • Omid Dayani 2
  • Reza Tahmasbi 3
  • mohammad mahdi sharifi hoseini 4
  • amin khezri 5
  • zohreh hajalizadeh 6

1 Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

2 Department of Animal Science Faculty of Agriculture Shahid Bahonar University of Kerman

3 Reza Tahmasbi (PhD) Associate Professor Department of Animal Science Faculty of Agriculture Shahid Bahonar University of Kerman Kerman, Iran

4 Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

5 Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran

6 department 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.

کلیدواژه‌ها [English]

  • appetite
  • Blood parameters
  • Retained nitrogen
  • rumen fermentation
  • Tarragon by-products

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