Continuous progeny testing, use and selection of proven bulls in Israel

R. Bar-Anan
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.
more » ... amount of imported semen is used for breeding young bulls. Breeding goals are discussed against the estimated genetic parameters for and between the given traits.
doi:10.23986/afsci.72144 fatcat:ztyk6bfhwjdszivjnpeesrb4bi