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اثر افزودن اسید بوتیریک به شیر کامل بر عملکرد رشد و فراسنجه های خونی گوساله های هلشتاین قبل و بعد از شیرگیری | ||
| علوم دامی | ||
| دوره 33، شماره 126، خرداد 1399، صفحه 17-30 اصل مقاله (1.12 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2019.123406.1775 | ||
| نویسندگان | ||
| احسان محجوبی1؛ امیر ارمکان2؛ مهدی حسین یزدی3؛ داود زحمتکش* 1 | ||
| 1استادیار گروه علوم دامی دانشگاه زنجان. | ||
| 2دانشجوی کارشناسی ارشد گروه علوم دامی دانشگاه زنجان. | ||
| 3استادیار گروه علوم دامی دانشگاه اراک. | ||
| چکیده | ||
| به منظور بررسی اثر افزودن اسید بوتیریک به شیر کامل بر عملکرد رشد و فراسنجه های خونی گوساله های هلشتاین از 36 راس گوساله هلشتاین در قالب طرح کاملاً تصادفی استفاده شد. تیمارهای آزمایشی عبارت بودند از: 1) گروه شاهد بدون افزودنی (B0)، 2) گروه شاهد + 4 گرم در روز اسید بوتیریک در شیر (B4)، و 3) گروه شاهد + 8 گرم در روز اسید بوتیریک در شیر (B8). در طول آزمایش به خوراک و آب به صورت آزاد دسترسی داشتند. وزن بدن در زمان شیرگیری و پایان دوره در B4 و B8 تمایل به افزایش داشت (08/0 = P). افزایش وزن روزانه به طور معنی داری (01/0 > P) در دوره پیش از شیرگیری تحت تأثیر تیمار قرار گرفت به طوری که B0 کمترین افزایش وزن روزانه را داشت ولی تفاوتی بین B4 و B8 مشاهده نشد. استارتر مصرفی در دوره پیش از شیرگیری (01/0 > P)، پس از شیرگیری (04/0 = P) و کل دوره (01/0 > P) برای B0 کمتر از دو گروه دیگر بود ولی بین B4 و B8 تفاوتی وجود نداشت. غلظت گلوکز، پروتئین کل و آلبومین سرم در دوره پیش از شیر گیری تفاوتی بین تیمارها نداشت ولی غلظت BHBA در گروه B0 کمتر از سایر گروه ها بود (01/0 > P). میانگین امتیاز مدفوع پیش از شیرگیری بین تیمارها تفاوتی نشان نداد. در کل نتایج این پژوهش برای اولین بار نشان داد که افزودن اسید بوتیریک به شیر کامل می تواند اثرات مثبتی بر بهبود عملکرد در پی داشته باشد. | ||
| کلیدواژهها | ||
| اسید بوتیریک؛ شیر کامل؛ گوساله؛ عملکرد تولیدی | ||
| عنوان مقاله [English] | ||
| Effect of adding butyric acid to whole milk on growth performance and blood parameters of Holstein calves in pre-weaning and post-weaning | ||
| نویسندگان [English] | ||
| Ehsan Mahjoubi1؛ Amir Armakan2؛ Mehdi Hossein Yazdi3؛ Davood Zahmatkesh1 | ||
| 1Department of Animal Science, University of Zanjan, Zanjan, Iran | ||
| 2Department of Animal Science, University of Zanjan, Zanjan, Iran | ||
| 3Department of Animal Science, Arak University, Arak, Iran | ||
| چکیده [English] | ||
| In order to evaluate the effect of adding butyric acid to whole milk on growth performance and blood parameters of Holstein calves, 36 calves were used in a completely randomized design. The experimental treatments were: 1) control group without any additive (B0); 2) B0 + 4 grams per day of added butyric acid in milk (B4); and 3) B0 + 8 grams per day of added butyric acid in milk (B8). The calves had free access to feed and water during the experiment. Body weight at weaning and end of experiment tended to increase in B4 and B8 compared to B0 (P = 0.08). Average daily gain was significantly (P < 0.01) affected by treatment during the pre-weaning, so that B0 had the lowest daily gain, but no difference was observed between B4 and B8. The starter intake was less in B0 compared to the other two groups during pre-weaning period (P < 0.01), post-weaning, (P = 0.04) and throughout study (P < 0.01), but there was no difference between B4 and B8. The serum concentrations of glucose, total protein and albumin within pre-weaning were not significantly different among treatments, but BHBA concentration was lower in B0 group than in other groups (P < 0.01). There was no difference among treatments in terms of average fecal score. In general, for the first time, the results of this study showed that adding butyric acid to the whole milk can have positive effects on improving performance. | ||
| کلیدواژهها [English] | ||
| Butyric acid, whole milk, calf, productive performance | ||
| مراجع | ||
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