Publications by authors named "Qijian Pu"
Small peptides provide the easily utilized nitrogen for rumen microbial and promote acetate generation for milk fat synthesis. However, the impacts of peptide supplements on lipometabolic processes were still unclear. Therefore, a total of 800 multiparous dairy herds (with an average live weight of 667.
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- The study assessed the impact of varying levels of enzymatic hydrolysate of cottonseed protein (ECP) and yeast culture on gas production and fermentation in vitro, using a specific experimental setup over 48 hours.
- Results showed that yeast culture significantly increased gas production, ammonia nitrogen concentration, microbial protein levels, and certain fatty acid proportions, while the ECP also enhanced some parameters but to a lesser extent.
- Yeast supplementation led to notable changes in microbial diversity, particularly affecting specific bacterial phyla, whereas ECP supplementation had a minimal impact on bacterial diversity.
This study was to determine differences in the global metabolic profiles of serum and urine of Xuanhan yellow cattle, Simmental crossbred cattle (Simmental × Xuanhan yellow cattle), and cattle-yaks (Jersey × Maiwa yak) under heat stress (temperature-humidity index remained above 80 for 1 week). A total of 55 different metabolites associated with the three breeds were identified in the serum and urine samples by gas chromatography-mass spectrometry. The metabolic adaptations to heat stress are heterogeneous.
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