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Veterinary Research Forum، جلد ۱۱، شماره ۴، صفحات ۳۱۱-۳۱۸
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عنوان انگلیسی Effects of intensified or conventional milk feeding on pre-weaning health ‎and feeding behavior of Holstein female calves around weaning
چکیده انگلیسی مقاله Health, inflammatory, and stress indices as well as feeding behavior around weaning were measured for Holstein female calves fed intensified milk or conventionally during the pre-weaning period. Calves (n ꞊ 48) were randomly assigned to one of two experimental treatments including a conventional (CF) or an intensified feeding (IF) groups. In CF group, calves (n ꞊ 24) received 0.52 kg of dry matter (DM) per day from pasteurized whole milk (23.00% crude protein (CP) and 27.00% fat) until day 50 of age. In IF group, calves (n= 24) fed 0.97 kg of DM per day on average for the first three weeks, and then, milk allowance decreased gradually to reach 0.52 kg DM per day and continued until day 50. All calves were gradually weaned from day 51 to 56. Blood samples were taken on days 14, 28, and 57 at 06:30 AM for serum amyloid A (SAA), cortisol, alanine aminotransferase (ALT), and iron analyses. Conventionally fed calves had more days with fever during the pre-weaning period. Blood SAA and cortisol levels were higher in CF calves on day 14. However, SAA levels were higher for IF calves on day 57. Intensified milk-fed calves spent more time for standing than CF calves. A trend to be significant was observed for non-nutritive oral behavior in IF calves. In summary, dairy calf health can be improved by intensified milk feeding during the pre-weaning period; however, this method has the potential to reduce calves welfare around weaning transition.
کلیدواژه‌های انگلیسی مقاله Animal welfare,‎ Feeding behavior,‎ Female calf ‎
نویسندگان مقاله Masoud Alimirzaei |
Department of Animal Sciences, Faculty of Agriculture, Urmia University, Urmia, Iran

Younes Ali Alijoo |
Department of Animal Sciences, Faculty of Agriculture, Urmia University, Urmia, Iran

Mehdi Dehghan Banadaky |
Department of Animal Sciences, Campus of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

Mehdi Eslamizad |
Department of Animal Sciences, Campus of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

نشانی اینترنتی https://vrf.iranjournals.ir/article_45623_9268730befde92caaa742f97292d3762.pdf
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