Recent  

This study aimed to investigate the relationship between increases in luteinizing hormone (LH) profiles induced by gonadotropin-releasing hormone (GnRH) in the serum and vaginal mucus of Japanese Black beef cows. A peak serum LH concentration was identified at 2.5 h post-GnRH administration, with serum concentrations returning to near-pre-GnRH-administration values after 6.5 h, whereas the peak LH concentration of vaginal mucus was identified 4.5 h after GnRH administration.

This article investigated the lamb meat physical, chemical, instrumental, and sensory quality characteristics of 60 meat samples from five indigenous sheep breeds. As meat quality is vital in healthy and balanced nutrition, the presented results will benefit consumers, nutritionists, and those working in this field.

Serum amyloid A (SAA), C-reactive protein (CRP), and some energy substrates were evaluated in 40 healthy dairy cows. Along lactation, SAA and CRP tended to increase, peaking at 240–300 d, and decrease thereafter. Along gestation, they increased in the first 4 months and then decreased. SAA and CRP were very variable and positively correlated with each other in both phases and with glucose during pregnancy, suggesting that they may play a role in physiological and non-pathological processes.

Good reproductive rates presented by the sheep show satisfactory reproductive activity during the two seasons, characterizing good adaptation to the region. The dry season seems to be a season that requires provision of an alternative feed in this critical period, which is characterized by the scarcity of rain and thus the dryness of the pastures.

Different studies have reported controversial results regarding the effects of c.963A>G polymorphism in the BMP15 gene on litter size in goats. We conducted a meta-analysis by using data of all published relevant studies to address this contradiction and found a significant association between c.963A>G polymorphism and litter size at birth under dominant and additive genetic models. The meta-analysis results revealed that the AA genotype could be positively connected with litter size in goats.

The study was conducted on Holstein calves to find the association between MOGAT1, MOGAT3/g.A229G, and MOGAT3/g.G1627A and growth traits. Association analysis showed a statistically significant difference between the MOGAT1 and body weight, body length, and chest circumference, MOGAT3/g.A229G with ADG and withers height, and MOGAT3/g.G1627A with body weight and body length (p < 0.05). The results confirmed that the MOGAT1, MOGAT3/g.A229G, and MOGAT3/g.G1627A locus are strong candidate genes.

This report provides valuable information about an interesting candidate gene underlying new genetic markers, which may be used for marker-assisted selection to improve quantity and quality of wool produced from Egyptian sheep. A part of the KAP22-1 gene was amplified, sequenced and genotyped in an Egyptian sheep population with important wool traits available for the animals for further association analysis.

HinfI polymorphisms of Pit-1 and CSN3 genes were identified in DNA isolated from blood samples of 100 Holstein calves used in the study, using the PCR-RFLP method. According to the Hardy–Weinberg genetic equilibrium test, it was observed that the distribution of genotype frequencies of HinfI polymorphisms of Pit-1 genes in the studied population was in equilibrium, but not in equilibrium in terms of CSN3 gene location.

To investigate the effects of miR-499-5p on muscle metabolism in broiler chickens, we assigned 16 broiler chicks to the control group and treatment group and then monitored the effects using metabolomics. A total of 76 differential metabolites were identified, and these metabolites were primarily involved with the regulation of lipid and carbohydrate metabolism.