346 Feeding Hempseed Cake Alters the Bovine gut, Respiratory and Reproductive Microbiota

نویسندگان

چکیده

Abstract A growing number of studies have investigated the viability feeding hemp by-products as livestock feedstuffs; however, their impact on microbiomes remains unexplored. Here, we evaluated effects hempseed cake (HSC) gastrointestinal, respiratory, and reproductive microbiota in beef heifers. Angus-crossbred heifers [19-months old; initial body weight (BW) = 494 ± 10 kg] were fed a corn-based finishing diet (10% forage) containing either 20% HSC (n 15) or corn distillers grains (Control, n 16) for 111 days until slaughter. Individual feed intake, behavior BW measured throughout study. Rumen fluid deep nasopharyngeal swabs (days 0 7, 42, 70 98), vaginal uterine (at slaughter) collected, assessed using 16S rRNA gene sequencing. resulted reduced average daily gain (P 0.05) without influencing intake > (reported elsewhere). Sampling time had significant effect both ruminal (PERMANOVA: R2 0.39; P < 0.001) (R2 0.18; microbial community structure. There was also (d7– 98; 0.06 ≤ 0.12; 0.05), (d 42; R2= 0.001), 0.06; 0.01) microbiota. Although richness rumen, nasopharynx, vagina, uterus not affected by feeding, diversity (Shannon diversity) increased rumen (d42-98) but 0.05). The relative abundance five genera enriched, while Overall, results our longitudinal study suggest that can alter bovine gut, respiratory

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ژورنال

عنوان ژورنال: Journal of Animal Science

سال: 2022

ISSN: ['0021-8812', '1525-3163', '1525-3015', '1544-7847']

DOI: https://doi.org/10.1093/jas/skac247.312