Phenotypic and genetic trends of pig traits in the CzePig program

KRUPOVÁ, Zuzana, ŽÁKOVÁ, Eliška, KRUPA, Emil and ZAVADILOVÁ, Ludmila. Phenotypic and genetic trends of pig traits in the CzePig program. Náš chov, 2021, vol. 81(11), p. 23-26. ISSN 0027-8068.
CathegoryPublication in specialized journals
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The breeding objective of the local pig population is aimed to improve their production and functional traits. One of the main criterions how to evaluate the success of a breeding program is the phenotypic level achieved in the evaluated traits and their genetic trend in the selected population. The aim of the presented work was to evaluate these parameters in dam and sire population of pigs included in the national program CzePig. Comparison of the current level of production traits in the parent population and their target values settled as breeding goals ten years ago shows: average lifetime daily gain (ADG) exceeds the target value by 47%, proportion of lean meat (LM) is slightly exceeded (+1 %) and piglets born alive (NBA) is gradually growing and is slightly (- 12%) below the target value. Also, in the čase of the sire population, the breeding goal for traits ADG and LM was reached (+ 62% and + 1%, respectively). The overall positive trend in the phenotype corresponds to the genetic trend of breeding values of these traits in purebred animals over the last decade (e.g. +2.661 g ADG, or + 0.024% LM in dam population). The new breeding goals in the both populations set for the next 10 years follow the current situation and expand the scope of breeding to other important traits, such as the effective utilisation of feeds or the number of functional teats of sows. Feed efficiency has jet been slightly and indirectly improved and in the čase of number of teats it would be desirable to continue in the trait slight improvement through the direct selection.