KMID : 1005220070220020097
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Journal of Embryo Transfer 2007 Volume.22 No. 2 p.97 ~ p.100
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Reproductive Performance in Relation to Vulvar Conformation in Cheju Mares
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Kang Min-Soo
Son Won-Geun Ko Moon-Suck
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Abstract
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The objective of the present study was to investigate relationships between Caslick¡¯s index and fertility for different age groups of Cheju mares. Ninety-one Cheju mares were used for this study. Caslick¡¯s index was measured the effective length and angle of declination of the vulva in the mare. They were mated naturally by stallions from February to October during the years $2002{\sim}2005$. The classification used in the present study was : Group I - good conception every years, Group II - conception every other year and Group III - Barren. Younger aged group ($3{\sim}7$ years) had a lower Caslick¡¯s index (<50) compared with $8{\sim}14$ aged group and older aged group (> 15 years). In this study, Caslick¡¯s index was increasing by increasing age of Cheju horse like Thoroughbred. However, fertility was decreasing by increasing Caslick¡¯s index. Hence, there was significant association between the different Caslick¡¯s index and fertility. Further research is needed to determine relationship between different Caslick¡¯s index and endometritis.
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KEYWORD
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Cheju mares, Caslick¡¯s index, vulvar conformation, reproduction
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