Korean Journal of Veterinary Research (대한수의학회지)
- Volume 16 Issue 2
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- Pages.115-119
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- 1976
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- 2466-1384(pISSN)
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- 2466-1392(eISSN)
Observation on Reproductive Efficiency in Dairy Cows 1. Average Number of Days from Parturition to Conception
유우(乳牛)의 번식능률(繁殖能率)에 관한 연구(硏究) 1. 분만후(分娩後) 수태시(受胎時)까지의 소요일수(所要日數)
- Jo, Chung Ho (Department of Veterinary Medicine, The City College of Seoul) ;
- Yong, Mahn Joong (Department of Veterinary Medicine, The City College of Seoul) ;
- Lee, ChuI Woo (Korea-German Dairy Farm)
- Published : 1976.10.20
Abstract
The survey was carried out to investigate the average number of days from parturition to conception to 349 calving cases out of Holstein cows in total 154 heads observed. The results were as follows: 1. The average number of days from parturition to conception was
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