Meatiness of tested gilts in three consecutive years

Abstract

In the present study, the aim was to determine the impact of the following factors: age, farm, and gilt genotype, as well as the regression impact of body weight at the end of the performance test on the following tested properties: age at the end of the test/final age (FA), lifetime daily gain (LDG), the backfat thickness measured in two places (according to the Main Breeding program for Central Serbia), the depth of the long back muscle (BM) and the estimated lean meat content/meatiness (M). The study included two farms of pigs (farm 1 and farm 2), for three consecutive years (year 1, year 2 and year 3). The number of tested heads per year was 974 (year 1), 1311 (year 2) and 757 (year 3). The tested gilts were of Swedish Landrace, Large White and Duroc breeds. The gilts originated from 97 sires, while the number of daughters per sires ranged from 10 to 100. The results show that the Duroc animals were the oldest (245 days), which had the highest values for both measures of backfat thickness, but the lowest values for meatiness. In the third study year, the lowest average values were determined for the properties of the LDG, BM and M. The female animals from the farm 1 showed less growth/gain and had lower values for the estimated meatiness. As a result of the study, it was established that all included factors had a very high statistically significant influence on the variation of the tested properties (P <0.001), only the genotype of gilts showed ahigh statistically significant effect on the BM property (P <0.01).

The effect of genotype, farm and sex on the production traits of fattening pigs of pedigree breed genotypes

“…22-D×(SL×D×D); 2) FRKG-French dressing in kg; FRPRO-French dressing in percentages; BWEFbody weight at the end of fattening; 3) ***=P<0.001; Sex 1 females; Sex2 castrated males In the presented model, female animals had thinner fat tissue but a higher yield and share of meat compared to castrated males, which is in agreement with the research of and Gogić et al (2014), where the values for the share of meat are almost identical to the results presented in the work of these two groups of authors. Estimated meatiness on live female animals of the Swedish Landrace breed in the research of Gogić et al (2019b) shows a value of 58.94% which is significantly higher compared to our work for the trait FRPRO measured according to the Rulebook.…”