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.

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.

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.

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.

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.

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. 

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.

The goal of the current study was to determine how dietary black pepper oil (BPO) supplementation affected growth performance, characteristics of growing quails' immunity, antioxidant status, and carcass yield. In conclusion, dietary BPO supplementation in Japanese quails' diet can boost growth performance and antioxidant indices, enhance lipid profile and carcass traits, and reduce intestinal infections.

The aim of the study was to use a digital system for the documentation of treatments and to investigate treatments, performance parameters and breeds. Farrowing-related treatments and high treatment indices of the sow related with an increase in stillborn piglets and high treatment indices of the sow resulted in fewer piglets born alive. Sows with parity of 1 had the highest treatment indices, which decreased over parities and increased for parity ≥8.