DGAT1 influences milk yield and quality. Prior studies had limitations: small sample sizes, no environmental effects, and poor lactation records. Our study of 1104 Holstein Friesian and Jersey cows used polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) and Sanger sequencing for genotyping. We evaluate genotypic and allelic frequencies, population genetics, and phenotypic effects. Our findings offer more reliable interpretations at both phenotypic and genotypic levels.

This study on Yanbian yellow cattle, known for their quality meat, examined fat from various body regions to understand differences in fat content and gene activity. We found 16 different fats in abdominal tissue, with unique fats in subcutaneous and other tissues. Kidney fat cells were larger than those in other areas. Gene activity varied significantly, with different genes being the most active in various tissues. 

This study assessed the effects of incorporating underutilized bitter vetch and sorghum grains on the performance of local goats. While growth parameters were unaffected, sorghum grains lowered carcass mesenteric fat and increased back lightness. Regarding meat quality, sorghum decreased ash, C18:2 n-6, and polyunsaturated fatty acids (PUFAs), while bitter vetch decreased protein but increased C18:3 n-3. Bitter vetch and sorghum grains can be incorporated into fattening diets for goat kids.

Overall, supplementing quail diets with selenium-enriched yeast (SY) at 3.5 mg kg^-1 led to improved growth, health, and selenium content in eggs and meat, indicating its potential as a beneficial dietary additive.

Rabbit meat is popular in European and other countries. China is a major producer of rabbit meat; Laiwu black and Minxinan black rabbits are local black meat rabbit breeds used in China. In this study, Laiwu black rabbits, Minxinan black rabbits and Hyla commercial rabbits were selected for meat quality testing. The results illustrated that both Laiwu black and Minxinan black rabbits have certain advantages in terms of nutritional indicators while also having good meat colour and flavour.

Genetic variation in the SLC11A1 (C>G) and CARD15 (A/G) genes may contribute to the onset and development of bovine tuberculosis (bTB), supporting the hypothesis that polymorphisms in these genes are associated with the risk of bTB in Holstein cattle. bTB is a complicated disease that is probably influenced by polymorphisms in many genes, particularly those related to the immune system and host–pathogen interactions.

The LEP gene has been extensively studied in cattle, but research on goats is limited, often overlooking vital parameters like reproduction and growth. We investigate the relationship between LEP gene polymorphisms and growth or reproductive traits in Saanen goats. Notably, the LEP-Sau3AI SNP exhibited associations with birth weight and average daily weight gain. This pioneering study is the first to explore these traits alongside selected LEP variants in Saanen goats.

Cattle are monovular and naturally single-birth animals, producing only one calf per year. In this work, we evaluated the effect of inducing twin calves in beef heifers using different hormone treatment regimes. Animals were randomly selected for the procedure that induced double/triple ovulation via hormone treatment. This method may serve to promote twin production in beef cattle.

Our study sought to investigate the impact of incorporating guava agroindustrial waste (GAW) at varying concentrations on nutrient utilization, lamb performance and economic viability. These lambs were subjected to diets containing increasing levels of GAW (0, 7.5, 15, 22.5 and 30 % based on dry matter). Our findings suggest that GAW can be effectively integrated into sheep diets at levels of up to 30 % without compromising lamb performance. 

Our study aimed to evaluate the effects of group size and the laying month on egg quality and the impact of group size on corticosterone and IgG levels in goose eggs in Hungary. From January to February, we demonstrated a decrease in egg width, shell thickness, shell weight, yolk weight, yolk ratio, yolk diameter, yolk colour with fan, and b* and an increase in albumen ratio and yolk pH. Regarding group size, the albumen pH, IgG, and corticosterone levels were higher in the small groups.