CORRELATION OF FEED INTAKE AND PRODUCTION CHARACTERISTICS OF BOARS IN A PERFORMANCE TEST

This paper deals with the influence of the level of feed on the results of the performance test of Large White boars between 30 and 100 kg live weight The test was performed through three years on three different farms including a total of 320 boars. The average production results were as follows: the age of boars at the beginning of the test was 87.07 days, the age at the end of the test was 165-61 days, daily weight gain 0.904 kg, daily feed intake 2.30 kg, conversion ratio 2.55 kg and the average thickness of bacon was 16.34 mm. To appraise of the influence of the systematic factors of the environment at the tested characteristics of the boars the analysis of the variation according to the LSQ method was used. The production characteristics of the boars were reviewed for each farm separately. The phenotype affinity between the fattening indicators is determined by the correlation coefficients. The higher daily feed consumption on all three farms was connected with a shorter fattening period (r=-0.46**, -0.51**, -0.44**), with a higher daily wight gain (r=0.47**, 0.36*, 0.46*) and a higher feed conversion ratio (r=0,40*, 0,47**, 0.45*). The results show a significant influence of the level of feed intake to the phenotype declared indicators of boars production and could be used in the breeding