sugar22risk posted an update 4 months ago
In contrast, with the female pigs a higher carcass yield and a better net feed efficiency were obtained than with the castrated pigs (p < 0.01). Considering both sexes, pigs of the genotype Du × DL had a higher feed intake and dlwg, and a higher feed conversion ratio and net feed efficiency than the Pi × (DL × DE) pigs, in spite of the fact that the latter produced a higher carcass yield (p < 0.05). The highest feed intake was found with the castrated pigs of the genotype Du × DL whereas the female pigs of the genotype Pi × (DL × DE) showed the lowest feed intake learn more (p < 0.05). Dlwg was clearly higher for pigs of the genotype Du × DL than for pigs of the genotype Pi × (DL × DE) (p < 0.01), but no statistically significant differences between male and female animals were found. Female pigs of Pi × (DL × DE) produced the highest, and castrated pigs of the genotype Du × DL the lowest carcass yield (p < 0.05). Comparing selected production traits between genotypes, the pigs of the Pi × (DL × DE) genotype showed the lowest feed intake, whereas the pigs of the pure-bred SH genotype had the lowest dlwg, and the lowest values in relation to feed conversion. The Du × DL pigs obtained the highest dlwg but the lowest carcass yield whereas at the same time their feed conversion ratio was highest. The results of selected traits of carcass and meat composition in relation to the feeding regimes are presented in Table 3. Lean meat percentage and meat area of Mld were highest in the control treatment and significantly (p < 0.05) lower for pigs on the feeding regimes FIN and GRO + FIN. In contrast, the fat area was not significantly different between the feeding regimes. The IMF content was significantly higher with the feeding regimes FIN and GRO + FIN, with a difference of >0.5% with feeding regime FIN and >1% with GRO + FIN compared with the control treatment. Differences between genotypes with respect to carcass and meat quality traits are presented in Table 4, considering only castrated pigs. The highest lean meat percentage and the largest meat area of Mld were found in the crossbred pigs of the genotypes Pi × (DL × DE) and Pi × SH. The fat area was not different between the genotypes, except for pigs of the breed SH, which showed significantly higher values. The IMF content as well as the drip losses were significantly lower for the pigs of genotype SH than for the pigs of the other genotypes. Concerning the drip losses of the Pi × (DL × DE) and Du × DL genotypes, their position was intermediate. The pigs of the pure bred SH genotype had the lowest carcass traits of all genotypes. The effect of crossing breed SH with a sire of the Pi genotype resulted in an increase in drip losses of more than 1.5% compared with the pure bred. In addition, Pi × SH showed the lowest pH1values whereas the pigs of the genotype Du × DL had the highest values (p < 0.05).