Influence of performance test traits of gilts on variability of their reproductive performance as primiparous sows
2009
Mijatovic, M., Faculty of Agriculture, Belgrade - Zemun (Serbia) | Petrovic, M., Faculty of Agriculture, Belgrade - Zemun (Serbia) | Radojkovic, D., Faculty of Agriculture, Belgrade - Zemun (Serbia) | Pusic, M., Institute for Application of the Science in Agriculture, Belgrade (Serbia) | Radovic, C., Institute for Animal Husbandry, Belgrade - Zemun (Serbia)
Objective of this paper was to establish genetic and environmental factors which influence the variation of reproductive parameters in primiparous sows with special focus on how selection on growth traits and lean meat content can influence the fertility in gilts as primiparous sows. Investigation included 1092 primiparous sows of Swedish Landrace breed. Based on research results it is obvious that reproductive traits of primiparous sows of Swedish Landrace breed, first of all age at first conception, number of live born piglets and total born piglets, were under the influence of lifetime average daily gain, but not under the influence of back fat thickness and lean meat content evaluated in vivo. Also, it can be concluded that there are no clear evidence about decline of reproductive traits considering the intensive selection pressure on back fat thickness, i.e. lean meat content.
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