젖소 경산우와 미경산우의 발정 행동과 배란 시간의 비교
(주)코리아스칼라
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서지정보
ㆍ발행기관 : 한국수정란이식학회
ㆍ수록지정보 : Journal of Embryo Transfer / 22권 / 3호
ㆍ저자명 : 손준규, 박수봉, 박성재, 백광수, 이명식, 안병석, 김현섭, 박춘근
한국어 초록
본 연구는 젖소 경산우와 미경산우의 다양한 발정 행동 특성과 배란 시간을 조사하기 위해 수행되었다. 공시된 89두 중 73두에서 배란이 일어났으며, 이 중 61두에서 발정 발현이 나타났다. 다양한 발정 행동은 투여 후 2일째부터 72시간 동안 육안 관찰하였으며, 배란 시간(4시간 간격으로 초음파 시험)과의 관계를 각각 조사하였다. 경산우의 발정 발현율은 외음부 냄새 맡기, 턱 비빔, 승가 및 승가 허용에서 각각 81%, 78%, 78% 및 56%로 나타
영어 초록
The objective of this study was to investigate the characteristics of various estrous behavior and ovulation time in dairy cows and heifers. In total, 73 ovulations and 61 estrous detection were observed in 89 Holstein cows. Various estrous behavior were observed during 72 hours from two days after injection and their relation with the time of ovulation(ultrasound examinations at 4-h intervals) was investigated. In estrous periods, the rate of sniffing, chin resting, mounting and standing heat was 81%, 78%, 78% and 56%, respectively in cows. In heifers, the rate of sniffing, chin resting, mounting and standing heat was 61%, 68%, 82% and 76%, respectively. Ovulation in cows and heifers occurred after onset of estrus, and after end of estrus, respectively. Interval between onset of estrus and ovulation time was significantly (p<0.05) shorter for standing heat () than for mounting, sniffing and chin resting () in cows but not significantly different in heifers. Interval between end of standing heat and ovulation time was significantly (p<0.05) shorter for heifer() than for cows(). Our results show that characteristics of estrous behavior and ovulation in dairy heifers are different to that of cows.
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