Studies on the Failure Rate of Artificial Insemination in Korean Native Cows
2013
Park, S.R., Kangwon National University, Chuncheon, Republic of Korea | Kim, H., Kangwon National University, Chuncheon, Republic of Korea | Lee, Y.S., Kangwon National University, Chuncheon, Republic of Korea | Kim, J.W., Kangwon National University, Chuncheon, Republic of Korea | Kim, J.B., Kangwon National University, Chuncheon, Republic of Korea | Song, Y.H., Kangwon National University, Chuncheon, Republic of Korea | Lee, H.K., HanKyong National University, Anseong, Republic of Korea | Lee, s.J., Kangwon National University, Chuncheon, Republic of Korea
This study was carried out to investigate the influence of artificial insemination faulure in 1,619 Korean native cows at Gangwon East area, Korea. The average AI failure rate was 37.02% in the cows and the highest rate was 40.85% in Yangyang-city. Based on the parity in the cows, the AI failure rate was 49.14% and 29.91% in the first and fifth parity coes, respectively. Whereas cows until fifth parity were decreased in AI failure, cows with sixth or more parity showed an upturning AI faulure trends with the increasing of parity number. AI faulure rate incidence according to the rump fat thickkness measured by ultrasound was 28.9% and 33.4% at 5 mm to 1o mm and over than 15 mm, respectively.
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