Генетичний потенціал продуктивності за відгодівельними якостями свиней порід ландрас та уельс

Abstract

The aim of the study was to evaluate the genetic potential of productivity on the feeding qualities of Landrace and Welsh breeds. This work is a continuation of the research started earlier. The studies were conducted under the conditions of a breeding reproduction of Welsh breed. Successive generations of breeds of Welsh and Landrace have been evaluated for their growing and meat characteristics. The thickness of the fat at the level of 6-7 thoracic vertebrae was evaluated by a lifetime ultrasound device. The genetic performance potential of Landrace and Welsh pigs was determined by methods based on the proportion of conditional blood. The estimated generation of Welsh breed had the best values at the age of reaching the live weight of 100 kg by 0.42 %, the average daily gain by 0.10 % and the thickness of the fat at the level of 6-7 thoracic vertebrae by 0.10 %. Landrace breed also had an improvement when it reached 100 kg of live weight by 0.45 %, average daily gain of 0.87 %, and fat thickness at the level of 6-7 thoracic vertebrae by 0.88 %. The genetic potential of productivity by the age of reaching live weight of 100 kg for a new generation of estimated population of the breed of Welsh is 162.39 days, with an average daily increase of 860.42 grams per day. The genetic potential of productivity for the thickness of the fat in the estimated population of the breed of Welsh is 11.50 mm. The genetic potential of productivity by the age of reaching live weight of 100 kg according to the estimated population of the Landrace breed is 161.25 days with an average daily increase of 877.92 grams per day. The genetic potential of productivity of the thickness of the fat in the estimated population of the Landrace breed is 11.20 mm. As a result of the calculation a higher degree of realization of the genetic potential of Welsh breed compared to Landraces was established. Further improvement of indicators for all evaluated features was established. The genetic potential of productivity by the age of reaching live weight of 100 kg according to the estimated population of the Landrace breed is 161.25 days, with an average daily increase of 877.92 grams per day. The genetic potential of productivity of the thickness of the fat in the estimated population of the Landrace breed is 11.20 mm. Pigs of Welsh breed have a better degree of realization of genetic potential compared to landraces, which can indirectly indicate their better adaptability under the same conditions of keeping and feeding.