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Continuous progeny testing, use and selection of proven bulls in Israel
1983
Agricultural and Food Science
The breeding policy of the Israeli Holstein-type dairy cattle is reviewed. The bulls are progeny tested on their daughters' first three lactations. The traits evaluated are the following: milk, fat, yield persistency, fertility, incidence of mastitis, and % cullings for three most important reasons. The test analysis takes into account the genetic level of daughters' contemporaries and maternal grandsires. The paper describes a general outline of the selection decisions in AI bulls.
doi:10.23986/afsci.72144
fatcat:ztyk6bfhwjdszivjnpeesrb4bi