【摘要】 设想通过后裔测定选择较低体细胞数 (SCC)估计育种值的公牛 ,以降低奶牛隐性乳房炎的发生率 ;对公牛进行包括生产性能、体型、SCC等各个方面的综合、全面的评价 ;考虑平衡地、较充分地发挥公牛降低隐性乳房炎发生率的遗传改良作用更多还原

【Abstract】 The conception is showed as follows: selecting sires whose estimated breeding value of somatic cell count (SCC) are lower than that of the others is applied to reduce recessive mastitis of cows, and genetic evaluation of these sires are conducted, which including production performance, body type, SCC and so on. Based on these, genetic improvement of reducing recessive mastitis of sires will be considered equilibratedly and fully.更多还原