Increase in Milk Yield of Commercial Dairy Herds Fed a Microbial and Enzyme Supplement
نویسندگان
چکیده
منابع مشابه
effect of bataine and sulphate supplement on wool and milk characteristics and lambs performance in naine ewes
تعداد 20 رأس میش نژاد نائینی 6+-24 ماهه، با میانگین وزن 2/3-+40 کیلوگرم، همراه با 20 رأس بره های آنها در قالب طرح کاملا تصادفی اثر بتائین و مکمل سولفات بر خصوصیات شیر و پشم و عملکرد بره ها بررسی شد. میش ها بطور تصادفی در چهار تیمار قرار گرفتند. تیمارها عبارت بودند از: 1-گروه شاهد 2-بتائین (05/0 درصد ماده خشک) 3-سولفات (24/0 سولفور درصد ماده خشک 4-بتائین هرماه با سولفات. جیره غذائی طبق nrc با مح...
15 صفحه اولStatistical evaluation of factors and interactions affecting dairy herd improvement milk urea nitrogen in commercial midwest dairy herds.
In this study, 400,729 Dairy Herd Improvement (DHI) records collected on 77,178 cows in 692 Midwest herds over 29 mo (January 1999 to May 2001) were used to analyze milk urea nitrogen (MUN) as collected the day of the test in 6 breeds. Records of Holsteins, Jerseys, and Brown Swiss were subjected to stepwise backward elimination analysis with a model including parity (primiparous vs. multiparou...
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Ludmila Křížová1*, Jiří Třináctý1, Michal Richter1, Sylvie Hadrová1 and Jan Pozdíšek2 1 Research Institute for Cattle Breeding, Ltd., Rapotín, Department of Animal Nutrition Physiology, Pohořelice, Vídeňská 699, Pohořelice, 691 23, Czech Republic 2 Research Institute for Cattle Breeding, Ltd., Rapotín, Department of Feed Production and Animal Nutrition, Rapotín, Výzkumníků 267, Vikýřovice 788 1...
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Table 1 Teat conditions observable according to the cause of the problem. Machine induced Environmental Infectious Discoloration Chapping Pseudocowpox Oedema Mud sores Herpes mammillitis Congestion Suckling damage Cowpox Wedging Fly bites Papilloma Ringing Other abrasions and cuts Foot and Mouth Disease Hemorrhaging petechia Weather damage Vesicular Stomatitis Hemorrhaging larger Allergic react...
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Classification of bovine teat condition can be used to assess the effects of milking management, milking equipment or environment on teat tissue and the risk of new intramammary infections. Veterinarians and others require a simple and reliable method for evaluating teat health in dairy herds. A protocol for systematic evaluation of teat condition in commercial herds is proposed. Guidelines for...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1998
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(98)75698-x