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اثر متقابل منبع دانه غلات و اندازه ذرات علوفه یونجه بر عملکرد، تخمیر شکمبهای، رشد اسکلتی و فراسنجههای خونی گوسالههای شیری هلشتاین | ||
| علوم دامی | ||
| مقاله 14، دوره 32، شماره 122، خرداد 1398، صفحه 173-186 اصل مقاله (2.09 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2018.121546.1683 | ||
| نویسندگان | ||
| علی صالح بهمن پور1؛ فرشید فتاح نیا2؛ مهدی میرزائی* 3؛ گلناز تاسلی4؛ حمیدرضا میرزایی الموتی5 | ||
| 1دانشجوی دکترای تغذیه دام،گروه علوم دامی، دانشکده کشاورزی، دانشگاه ایلام | ||
| 2دانشیار گروه علوم دامی، دانشکده کشاورزی، دانشگاه ایلام | ||
| 3استادیار گروه علوم دامی، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک | ||
| 4استادیار گروه علوم دامی، دانشکده کشاورزی، دانشگاه ایلام | ||
| 5دانشیار گروه علوم دامی، دانشکده کشاورزی، دانشگاه زنجان | ||
| چکیده | ||
| این آزمایش با هدف بررسی اثر منبع دانه غلات (جو و ذرت) و اندازه ذرات علوفه یونجه (پودر شده در مقابل متوسط) بر عملکرد رشد، فراسنجههای خونی و تخمیر شکمبهای گوسالههای شیری انجام شد. از 32 رأس گوساله هلشتاین سه روزه (وزن اولیه 0/2 ± 4/36 کیلوگرم) در قالب طرح کاملاً تصادفی و آرایش فاکتوریل 2 × 2 استفاده شد. جیرههای آزمایشی شامل جیره حاوی دانه جو و علوفه یونجه پودر شده، دانه جو و علوفه یونجه با اندازه متوسط، دانه ذرت و علوفه یونجه پودر شده و دانه ذرت و علوفه یونجه با اندازه متوسط بودند. مصرف خوراک آغازین در گوسالههای تغذیه شده با جیرههای حاوی دانه ذرت در مقایسه با دانه جو در دوره قبل و بعد از شیرگیری و کل دوره بالاتر بود. گوسالههای تغذیه شده با جیره حاوی دانه ذرت دارای وزن نهایی و میانگین افزایش وزن روزانه بالاتری در مقایسه با دانه جو بودند. اندازه ذرات علوفه یونجه تاثیری بر مصرف خوراک آغازین و میانگین افزایش وزن روزانه نداشت. ارتفاع هیپ و جدوگاه گوسالههای تغذیه شده با جیره حاوی دانه ذرت در مقایسه با دانه جو بالاتر بود. در گوسالههای تغذیه شده با جیره حاوی دانه ذرت در مقایسه با دانه جو غلظت کل اسیدهای چرب فرار افزایش و نسبت مولی استات کاهش یافت. در این مطالعه تقابلی بین منبع غلات خوراک آغازین و اندازه ذرات علوفه بر عملکرد گوسالههای شیری مشاهده نشد اما استفاده از دانه ذرت در خوراک آغازین عملکرد گوسالههای هلشتاین طی دوره انتقال از خوراک مایع به جامد را بهبود داد. | ||
| کلیدواژهها | ||
| گوساله شیری؛ دانه غلات؛ اندازه قطعات علوفه؛ عملکرد | ||
| عنوان مقاله [English] | ||
| Interactions between grain source and alfalfa hay particle size on performance, ruminal fermentation, skeletal growth and blood parameters in Holstein dairy calves | ||
| نویسندگان [English] | ||
| Ali Saleh Bahmanpour1؛ Farshid Fatahnia2؛ Mehdi Mirzaei3؛ golnaz taasoli4؛ Hamid Reza Mirzaei Alamouti5 | ||
| 1Department of Animal Science, Faculty of Agriculture, Ilam University | ||
| 2Scientific member of Animal Science Department in Ilam University | ||
| 3Department of Animal Science, Faculty of Agriculture and Natural Resources, Arak University, Arak 38156-88349, Iran | ||
| 4ilam university | ||
| چکیده [English] | ||
| This study was conducted to investigate the effect of grain sources (corn or barley) and alfalfa hay particle size (PS; fine or medium) on growth performance, blood parameters and ruminal fermentation of dairy calves. Thirty-two 3-d-old Holstein dairy calves (36.4 ± 2.0 kg of body weight) were used in a completely randomized design with 2 × 2 factorial arrangement. Experimental diets consisted of diet containing barley grain with fine alfalfa hay PS, barley grain with medium alfalfa hay PS, corn grain with fine alfalfa hay PS and corn grain with medium alfalfa hay PS. Starter feed intake was greater for calves fed corn than those fed barley during the pre- and post-weaning and overall periods. Calves fed corn had greater final body weight as well as overall average daily gain (ADG) than barley calves. However, alfalfa hay PS had no effect on starter intake and ADG. Hip and wither heights were greater in calves fed corn than those fed barley. Total volatile fatty acids concentrations increased and the molar proportion of acetate decreased in calves fed corn compared to those fed barley. These results showed no interactions between grain sources and alfalfa hay PS on calf performance; however, corn inclusion in starter diet improved the growth performance of Holstein calves during the transition from liquid to solid feed. | ||
| کلیدواژهها [English] | ||
| dairy calf, cereal grain, forage particle size, performance | ||
| مراجع | ||
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