کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8503701 | 1554278 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Case Study: The effects of photoperiod on feeding behavior of lactating dairy cows in tie-stalls
ترجمه فارسی عنوان
مطالعه موردی: اثرات دوره کوتاه مدت بر رفتار تغذیه گاوهای شیرده در گاوهای شیری
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کلمات کلیدی
دوره نوروزی، رفتار تغذیه ای مرتب غذا، نور تکمیلی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
To determine the effects of photoperiod management on behavior of dairy cows, 30 lactating cows were subjected to a long-day (16 h/d light) or short-day photoperiod (8 h/d light). Feeding behavior was observed and feed refusals were collected before and after a 21-d adaptation to photoperiod treatment. Feeding behavior data were summarized for 4 daily time periods based on light schedule, and no effect of light treatment was observed for DMI, lying time, or overall feeding behavior. However, in time period 4 (1600 to 1900 h), the long-day treatment decreased lying time (28.3 vs. 37.7 min/h) and tended to increase eating time (17.5 vs. 9.03 min/h). There was also a tendency for the long-day treatment to reduce daily feed sorting. Providing supplementary light may reduce sorting and increase distribution of eating activities throughout the day, and the change in feeding pattern may be affected by the time of day the supplementary light is provided.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Professional Animal Scientist - Volume 34, Issue 1, February 2018, Pages 103-107
Journal: The Professional Animal Scientist - Volume 34, Issue 1, February 2018, Pages 103-107
نویسندگان
K. Macmillan, O.S. Espinoza, M. Oba,