Comparison of fattening performance, carcass traits, meat quality, and leg bone traits among three goose genotypes reared under intensive conditions.

Abstract

This study aimed to evaluate fattening performance, carcass traits, meat quality, and leg bone traits in geese reared under an intensive production system, depending on genotypes. In the study, a total of 210 goslings (70 goslings for each genotype such as Linda, Toulouse, and Mast) were obtained from 168-week-old breeders. The geese were fed ad libitum with the same feeds during 12 weeks. Then, 5 males and 5 females from each goose genotype (30 birds in total) were slaughtered to determine the carcass, meat, and bone properties. The fattening performance, carcass properties, relative organ weights, and proximate analyses of breast and thigh meats did not differ among the genotype groups. The relative abdominal fat percentage weight was the highest in the Mast geese among the examined genotypes. Dry matter and crude protein values in meat were affected by genotype. The liver compositions, such as dry matter, crude fat, and crude protein, was significantly different from breast and thigh meat. It was found that the meat of Toulouse and Linda genotypes had lower SFA, n6/n3, and TI values, but higher MUFA, UFA, and crude protein values, making them superior to the meat of the Mast genotype. In the thigh meat, it was determined that lower SFA, AI, and TI values, and higher MUFA and UFA values, made it superior to the breast meat. In goose liver, DFA, NF and TI values were higher than the other tissues. Interactions were observed in the chemical composition and some fatty acids (P < 0.05). The femur and metatarsus bones of the Linda genotype were more durable than those of the Mast genotype due to their lower Robusticity indexes of femur and metatarsus bones. These results show that Linda and Toulouse geese are superior to the Mast genotype in terms of valuable fatty acids under intensive fattening. Additionally, the superior bone strength of Linda geese indicates that bone-related problems will be less common when this genotype is raised under intensive conditions.