STUDY ON SOW CULLING RISKS IN A LARGE-SCALE PIG FARM 1 STUDIU ASUPRA RISCURILOR ELIMINĂRII DIN EFECTIV A SCROAFELOR DESTINATE SACRIFICĂRII ÎN FERME MARI DE PORCI

Balogh, Ertsey, Kovács
2007 unpublished
Sow culling is a significant task for animal breeders and farmers; moreover, it provides a basis for profitable pork production as well. The reason for culling the majority of sows is their low productivity. 15-20% of culled sows farrows only once, and sows in product-manufacturing farms generally do not live until their 5. farrowing cycle. Depending on farm potentialities, it can have several reasons. Our study has investigated data from 1969 sows culled in 2005 in a large-scale pig breeding
more » ... rm with 3000 sows in Hajdú-Bihar County. Our results were calculated by one of the non-parametric forms of Survival Analysis, the Kaplan-Meier analysis. Mortality intensity was quantified by one of the other models of Survival Analysis, the log-rate exponential model. In terms of culling, we have determined the risk values of different genetic potentials and various culling reasons.
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