Effect of Prolactin Receptor (PRLR) and Beta-Casein (CSN2) Gene Polymorphism on the Chemical Composition of Milk Sows.

The objective of the studies was to evaluate the impact of the prolactin receptor and β-casein genes on the basic chemical composition and pH of the colostrum and milk of sows. Experiments were carried out on 103 Złotnicka White breed sows. These animals are under the Domestic Program of Protection of Genetic Resources.