Genetic Analysis of Herd Life in Canadian Dairy Cattle on a Lactation Basis Using the Survival Kit
نویسندگان
چکیده
Longevity is a highly desirable trait that considerably affects overall profitability. With increased longevity the mean production of the herd increases because a greater proportion of the culling decisions are based on production and the proportion of mature cows, which produce more milk than young, cows is increased. An increased longevity enables higher selection intensity of females and thus greater selection response.
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تاریخ انتشار 2003