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http://dx.doi.org/10.5187/JAST.2002.44.6.693

Relationships Between Bovine Growth Hormone Gene Polymorphism and Semen Characteristics in Hanwoo Bull  

Lee, S.S. (Livestock Improvement Center, NACF)
Kim, J.H. (Livestock Improvement Center, NACF)
Jeong, J. (Livestock Improvement Center, NACF)
Park, N.H. (Livestock Improvement Center, NACF)
Publication Information
Journal of Animal Science and Technology / v.44, no.6, 2002 , pp. 693-700 More about this Journal
Abstract
The objects of this study were to estimate gene frequencies of the bovine growth hormone(bGH), and to investigate the relationship between the bGH polymorphism and semen characteristics in Hanwoo bull. One hundred nine heads of Hanwoo bulls were used to identify bGH genotypes by the PCR-RFLP, followed by digestion with Alu I restriction enzyme. The frequencies of leucine(Leu) and Valine(Val) alleles were 0.88 and 0.12, respectively. Observed number of LL, LV and VV genotypes were 83, 25 and 1, respectively. Semen characteristics(semen volume, sperm concentration) were analyzed by GH genotypes in 25,559 ejaculates of 109 heads. Although bGH genotypes showed no significant effects on semen characteristics, those of bulls with VV genotype were tended to be lower than those of other bulls with LL or LV genotypes. And, in 1998, total sperm number(60.47${\times}$$10^8$) of VV bulls were significantly lower(P<0.05) than those(86.21${\sim}$92.22${\times}$$10^8$) of other genotypes bulls. This results provide that the VV bull in bGH locus may be worse, under the LL and LV bulls on semen characteristics. However, the number of examined VV bulls was only one and further investigations are needed to confirm the results.
Keywords
Hanwoo; Bovine growth hormone gene; PCR-RFLP; Semen;
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