Sasaki O, Kimura H, Ishii K, Satoh M, Nagamine Y, Yokouchi K. Economic effects of using sexed semen in Japanese dairy herds.
Anim Sci J 2011;
82:486-93. [PMID:
21615845 DOI:
10.1111/j.1740-0929.2010.00847.x]
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Abstract
Dairy farm agricultural income should increase when sexed semen is used instead of unsexed semen. This study simulated three scenarios: using unsexed semen (N), using X sperm of Holstein and unsexed semen of Japanese Black (H), and using X sperm of Holstein and Y sperm of Japanese Black (HJ). Two management scenarios were considered: conventional management (CONV); and the use of Japanese Black semen with surplus cows to produce F(1) s where sufficient replacement female Holstein calves were obtained for maintenance (MAINT). In CONV, the agricultural incomes of H and HJ were 610,000-2,400,000 yen higher than that of N. The agricultural income increased when the difference in the prices between Holstein males and average F(1) male/female calves was 34,000-50,000 yen, that between Holstein male and female calves was 80,000-110,000 yen, and that between F(1) male and female calves was 50,000-90,000 yen. Therefore, the agricultural income can be increased by using sexed semen to select calves of a more valued breed and sex.
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