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Author (up) Chenoweth, P.J.; Chase, C.C.; Larsen, R.E.; Thatcher, M.-J.D.; Bivens, J.F.; Wilcox, C.J.
Title The assessment of sexual performance in young Bos taurus and Bos indicus beef bulls Type Journal Article
Year 1996 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 48 Issue 3-4 Pages 225-235
Keywords Bos indicus; Sex behavior; Cattle reproduction; Mating behavior; Tests
Abstract Yearling beef bulls, representing different Bos indicus and Bos taurus breeds, were given two sexual performance assessments (libido score, number of services, time to first mount and time of sexual inactivity) at four test periods (January, April, July and October) in 1991 (Trial 1) and 1992 (Trial 2) at the Subtropical Agricultural Research Station, Brooksville, Florida. Breed and test period, as well as their interactions, influenced most results. Sexual performance assessments generally improved with age in Bos taurus breeds, but not in Bos indicus. The temperate Bos taurus breeds (Angus and Hereford) were most sexually active, the tropically adapted Bos taurus breeds (Senepol and Romosinuano) intermediate and the two Bos indicus breeds (Brahman and Nellore x Brahman) were least active. Service rates were generally low. Seasonal patterns in sexual performance were not apparent, with breed and year differences occurring. Although breeds showed consistent test results, the failure of Bos indicus bulls to service in any test, indicates either sexual immaturity, or inadequate procedures for assessment of sexual performance in this breed group.
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Call Number refbase @ user @ Serial 2865
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