effects of feeding frequency and adding plant oil to diet on performance and feeding behavior of lactating holstein dairy cows

نویسندگان

کامران اکبری پابندی

کارشناس ارشد، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه زنجان، زنجان حمیدرضا میرزایی الموتی

استادیار، گروه علوم دامی، دانشکدۀ کشاورزی دانشگاه زنجان، زنجان

چکیده

this experiment was conducted to investigate the effect of feeding frequency and oil supplementation to the diet on performance and feeding behavior of lactating dairy cows. twenty four lactating holstein cows, 12 primiparous, (bw= 626±58 kg and dim= 195±44 day) and 12 multiparous, (bw= 617±25 kg and dim= 207±39 day) were randomly assigned to four diets contained 2.5 percent supplemental oil or no oil and feeding frequency of 3 or 1 time per day in a randomized complete block design with a 2×2 factorial arrangement. frequency of feed delivery and oil supplementation had no effect on dry matter intake. oil supplementation reduced slug feeding especially with feeding once per day (p

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