The assessment of breeding boars by generations

The research objective was the evaluation of breeding value of manufacturing male pigs for their use in the systems of thoroughbred breeding and hybridization. The research problems were to study the indicators of growth, development of male pigs (proband P) by the results of control growing; to analyse feeding indicators on the generations of proband (P), fathers (F), the fathers of fathers (FF); to compare the indicators characterizing meat qualities of the generations of proband (P), fathers (F), the fathers of fathers (FF); to allocate the best manufacturing male pigs and to recommend them in the systems of linear breeding. The information of the database of breeding boars of the station of artificial insemination of SC "Lozovoye" of JSC ‘Pedigree Plant Yubileyny’ of the Tyumen Region in three generations was studied. Comparative analysis of the probands and their ancestors allowed establishing that there had been the improvement of the indicators from generation (FF) to generation (P) on the muscle depth by 6.4 mm, to forage expenses on 0.1 f.u. It was established that early maturity in the breed of pigs Landrace breed made 131 days in generation (FF) that below average values for 3 days, and in generation (P) - 136 days that for 8.5 days below average value - 144.5 days. In breed, early maturity in the duroc generation (FF) made 137 days, and in generation (P) the increase for 0.5 days was observed, at the decrease in the expenses of forage on 0.14 f.u. the increase in the depth of the muscle - by 8 mm. In the breeds of large white and pietrain two generations (F) and were studied (P). In the generation of proband positive dynamics of the improvement of the signs was noted. Outstanding sire boars in each breed for using in the systems of linear breeding were allocated. In large white breed - No. 520919, No. 520325 which descendants had high rates of growth rate (138-144 days), body lengths (119-120 cm), an average daily gain - 1104-1226, forage expenses - 2.5-2.6 f.u.; in breed duroc - No. 400721, No. 500713, No. 600253 which descendants had the length of the body of 117-119 cm, average daily gain - 1136-1388, forage expenses - 2.6-2.7 f.u.