Influence of reproduction traits and pre-weaning growth rate on herd efficiency of different beef breed types in an arid sub-tropical environment

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dc.contributor.author Du Plessis, I.
dc.contributor.author Hoffman, L. C.
dc.contributor.author Calitz, F. J.
dc.date.accessioned 2011-09-23T06:33:16Z
dc.date.available 2011-09-23T06:33:16Z
dc.date.issued 2006
dc.identifier.citation Du Plessis, I., Hoffman, L. C. & Calitz, F. J. 2006. Influence of reproduction traits and pre-weaning growth rate on herd efficiency of different beef breed types in an arid sub-tropical environment. South African Journal of Aninmal Science, 36(2), 89-98. en_ZA
dc.identifier.uri http://hdl.handle.net/10019.1/16435
dc.description The original publication is available at http://www.sasas.co.za/ en_ZA
dc.description.abstract ABSTRACT: The efficiency of Simmentaler cross (SX), Bonsmara cross (BX), Afrikaner (AF) and Nguni (NG) cowherds to produce weaner calves under natural sweetveld conditions was investigated. The respective cowherds were selected to differ with regard to frame size (SX > BX > AF > NG). The AF cows, young (13 to 15 months old) heifers and herd had significantly lower pregnancy rates than the SX, BX and NG cows, young heifers and herds. The weaning rate for NG was significantly higher (15%) than SX, and although not significant, it was still 5 and 8% respectively higher than BX and AF. Weaning weight and pre-weaning growth parameters differed significantly between breed types (SX > BX > AF > NG). Cow efficiency was significantly lower for the AF cows than for the SX, BX and NG cows. The NG herd was more efficient than the other three herds, while the AF herd was the least efficient. Differences in herd efficiency were mainly due to differences in the reproduction rates of the respective herds. The reproduction and calf survival rates were the most important production traits that affected herd efficiency. Management practices should be adapted to maximize the reproduction rate of the females, including the young heifers, to maximise herd efficiency. en_ZA
dc.format.extent p. 89-98
dc.language.iso en_ZA en_ZA
dc.publisher South African Society for Animal Science en_ZA
dc.subject Beef cattle -- Reproduction en_ZA
dc.subject Survival rate en_ZA
dc.subject Calving rate en_ZA
dc.subject Herd efficiency en_ZA
dc.subject Pre-weaning growth rate en_ZA
dc.title Influence of reproduction traits and pre-weaning growth rate on herd efficiency of different beef breed types in an arid sub-tropical environment en_ZA
dc.type Article en_ZA
dc.description.version Publishers' version en_ZA
dc.rights.holder South African Society for Animal Science en_ZA


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