WALES AND LANDRAS PIGS GENETIC POTENTIAL OF PRODUCTIVITY ON FEEDING QUALITIES
Three successive Wales and Landrace generations were evaluated on feeding qualities for pigs genetic potential of the productivity of these breeds determination. Studies were conducted in terms of breeding reproduction farm of Wales’s pigs. The fat thickness at the level of 6-7 th vertebrae was evaluated in vivo with a Renco Lean-meter ultrasound device. The Landrace and Wales pigs genetic potential of productivity was determined by the methods of M. Z. Basovskogo, V. P. Kovalenko, and T. I. Nezhlukchenko, based on the crossing proportion by initial genotypes. The genetic potential of productivity realization degree (GPRD, %) was determined by the ratio of the actual productivity to the theoretically calculated. Significant differences between breeds were established only for the paternal generation by the age of live weight of 100 kg at the level of 0.64% (p<0.05). For the rest indicators in all generations of pigs between landrace and Wales breeds, no significant differences were found. For both breeds, a gradual improvement of the age of live weight of 100 kg indicators was established. At the same time, the progress in the generations based on the fat thickness thickness at the level of 6-7 th vertebrae was not installed. The estimated generation was characterized by better age of live weight of 100 kg compared to the ancestral and paternal generation. The estimated generation of Landrace breed was also characterized by a shorter fattening period. The obtained results indicate a greater progress by the fattening qualities of the Welsh pigs compared to the Landrace breed in the farm. The advantage decrease by fattening qualities of Landrace in comparison with Wales pigs also was revealed. Genetic potential of productivity evaluation and the its realization degree by fattening qualities of Landrace and Wales breeds did not reveal significant differences between the young animals of these two breeds by the age of live weight of 100 kg, with a slight advantage of fat thickness at the level of 6-7 th vertebrae.