Effects of Chromium Propionate and Calcium Propionate on Lactation Performance and Rumen Microbiota in Postpartum Heat-Stressed Holstein Dairy Cows

• DOI: 10.3390/microorganisms11071625
• Publication Date: 2023-06-22T05:49:32Z
• Authors: Chenxu Zhao; Bingyu Shen; Yan Huang; Yezi Kong; Panpan Tan; Yi Zhou; Jiaqi Yang; Chuang Xu; Jianguo Wang
• Keywords: Total mixed ration; Milking

Chromium propionate (Cr-Pro) and calcium (Ca-Pro) are widely applied in dairy production, especially the alleviation of heat stress (HS). HS can reduce abundance rumen microbiota lactation performance cows. The present work mainly focused on evaluating effects Cr-Pro Ca-Pro performance, ruminal bacterial community, postpartum cows as well identifying differences their mechanisms. Fifteen multiparous Holstein with equivalent weights (694 ± 28 kg) milk yields (41.2 1.21 kg/day) were randomly divided into three groups: control (CON), (CRPR), (CAPR). received basal total mixed ration (TMR) diet, while CRPR group TMR 3.13 g/day Cr-Pro, CAPR 200 Ca-Pro. microbial 16S rRNA was sequenced using Illumina NovaSeq platform along measurement volatile fatty acids (VFAs) milking performance. improved increased VFA concentration, altered significantly yield (p < 0.01). richness diversity species after feeding 0.05). Gene function prediction revealed metabolic pathways biological-synthesis-related groups supplemented Our results indicate that application or provide relief for through different mechanisms, a combination both is recommended optimal production.