Observed progeny performance validates the benefit of mating genetically elite beef sires to dairy females
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چکیده
منابع مشابه
Differences between progeny of beef sires in susceptibility to fescue toxicosis.
Fifteen progeny of two Polled Hereford sires were fed endophyte-infected tall fescue seed (E+) to investigate variability in susceptibility to fescue toxicosis. One sire, bred in Missouri, was reputed to produce calves that were resistant to fescue toxicosis. The Control sire, from Virginia, had unknown merit for susceptibility. There were two phases in which E+ was included in the diet (2 and ...
متن کاملInfluence of prepartum nutrition on the reproductive performance of beef females and the performance of their progeny.
Two experiments were designed to assess the importance of maternal nutrition in the later stages of gestation on reproductive performance of beef females and on the growth and survival of their calves. In experiment 1, 59 Hereford first-calf heifers were assigned to one of two levels of dietary energy (high [HI which was 100% of the recommended level of prepartum energy or low [L] which was 65%...
متن کاملCharacteristics of Crossbred Progeny of Holstein Dams Sired by Different Beef Breeds: A Review
Excellent reviews of cattle breed comparisons or breed-cross comparisons have been previously reported by Franke (1980), Long (1980), and Marshall (1994). However, these reviews do not contain information on the calving ease, performance, carcass characteristics, or beef palatability of crossbred progeny of Holstein dams sired by different beef breeds. In many countries dairy females are common...
متن کاملInfluence of single or multiple sires and serving capacity on mating behavior of beef bulls.
A study was conducted to determine the effect of serving capacity (SC) on sexual behavior of yearling bulls during single- and double-sire pasture matings. Approximately 60 crossbred virgin bulls were subjected to 3 SC tests, and 20 bulls were selected that were similar in age, BW, testes size and semen quality. Ten bulls were high SC (greater than or equal to 3 services/test) and 10 bulls were...
متن کاملGenes Loaded Sperm Competition to Target Compatible Females Use Multiple Mating and Genetically
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2020
ISSN: 0022-0302
DOI: 10.3168/jds.2019-17431