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2001; Kansas Agricultural Experiment Station contribution; no. 02-133-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 881; Dairy; Bulls; Fertility; Lameness
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Full-Text Articles in Animal Sciences
Management Of Natural Service Bulls On Large Dairies (2001), P.J. Chenoweth, John F. Smith
Management Of Natural Service Bulls On Large Dairies (2001), P.J. Chenoweth, John F. Smith
Kansas Agricultural Experiment Station Research Reports
Natural service (NS) bulls are widely used on large dairy farms despite the wellproven genetic progress achievable through AI. Producers may choose to use NS bulls for a variety of reasons that are discussed below. In this presentation, problems encountered with the use of NS bulls on a large dairy in Kansas are described in relation to reduced reproductive performance on that dairy. Lameness in bulls was considered to be a major contributing factor to reduced herd reproductive performance, with seminal vesiculitis also possibly playing a role. Possible contributing factors for the occurrence of these problems in the bull population …