VARIABLE IN HYBRID SUPERIORITY OF THE DIFFERENT HYBRID COMBINATIONS BETWEEN DUROC, PIÉTRAIN, LANDRACE

Abstract

Studying the factors affecting the production capacity of breeding stock is very important to propose solutions to improve their production. The purpose of this study is to analyze the variation of hybrid superiority in some production traits of the hybrid combinations between 3 breeds of pigs Duroc, Piétrain, Landrace in order to select the best hybrid combinations.put into production. The study was carried out on 767 individuals of 3 breeds Duroc, Piétrain, Landrace and 528 individuals of 04 hybrid combinations between them with different hybrid formulas. The studied traits were: Weight gain, back fat thickness, feed consumption, lean percentage. The research results show that: The best hybrid advantage is in the F1-forward hybrid between Duroc x Piétrain, Duroc x Landrace and Piétrain x Landrace pairs for all 4 traits. In particular, the hybrid advantage in terms of weight gain was highest in the Duroc x Piétrain hybrid (1.06%), the lowest in the Piétrain x Landrace hybrid (0.35%); But the hybrid advantage in lean percentage was highest in Piétrain x Landrace hybrid (2.47%) and lowest in Duroc x Piétrain hybrid (0.38%). The traits of weight gain and lean percentage have hybrid advantage > 0, whereas the traits of thick back fat and feed consumption have hybrid dominance < 0. This is an important advantage in crossbreeding to create pigs with good growth, high lean percentage but low feed consumption.