The effect of scope of analyzed data on accuracy of selection indices for evaluation of sow breeding value
2009
Radojkovic, D. | Petrovic, M. | Mijatovic, M., University of Belgrade, Belgrade - Zemun (Serbia). Faculty of Agriculture, Institute of Zootechnics | Radovic, C., Institute for Animal Husbandry, Belgrade - Zemun (Serbia)
Objective of this paper was to establish to what extent the accuracy of constructed selection indices will be changed depending on the scope of analyzed data relating to fertility based on which parameters necessary for construction of selection indices (SI) were established. Accuracy of selection indices as method for evaluation of breeding value of sows was assessed using correlation coefficient between index and aggregate genotype (rIH). Accuracy of selection indices constructed based on parameters evaluated by analysis of fertility results on observed farms varied within limits of low rIH = 0.255 (SI3 for Farm 2) to rIH = 0.405 (SI1 for Farm 3), and only in case SI2 for Farm 2 it was in the category of very low (rIH = 0.231). Introduction into analysis of fertility results of sows realized in the second and third farrowing resulted in decrease of accuracy of constructed selection indices.
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