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KMID : 1005220060210020095
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Journal of Embryo Transfer
2006 Volume.21 No. 2 p.95 ~ p.100
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Effects of Dummy Cow or Teaser Bull for Semen Collection on Semen Characteristics in Hanwoo Proven Bull
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Lee S.-S.
Jeong Joon
Park N. H.
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Abstract
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Thirty heads of proven bulls were used to identify the effects of mounting conditions (dummy cow vs. teaser bull) on semen characteristics in Hanwoo. Semen was collected from bulls daily two times with 1 h interval every $3{\sim}6$ days for 6 months. Bulls mounted dummy cow (BDC) had higher both the $1^{st}$ and the $2^{nd}$ sperm concentrations than in bulls mounted teaser bull (BTB), resulting in more total sperm number (p<0.05). The total sperm number in the $1^{st}$ collection was the highest in BDC with collection interval of 5 days. Total sperm number in the $1^{st}\;and\;2^{nd}$ collections tended to be more in the BDC of $4{\sim}5$ years old and BTB of $6{\sim}7$ years old. These results indicate that semen collection using dummy cow has a better effect than teaser bull on semen characteristics.
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KEYWORD
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dummy cow, teaser bull, semen characteristics, Hanwoo
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