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Effects of Italian ryegrass silage-based total mixed ration on rumen fermentation, growth performance, blood metabolites, and bacterial communities of growing Hanwoo heifers.

التفاصيل البيبلوغرافية
العنوان: Effects of Italian ryegrass silage-based total mixed ration on rumen fermentation, growth performance, blood metabolites, and bacterial communities of growing Hanwoo heifers.
المؤلفون: Ku MJ; Livestock Research Institute, Jeonnam Agricultural Research and Extension Services, Gangjin 59213, Korea., Miguel MA; Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea., Kim SH; Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea., Jeong CD; Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea., Ramos SC; Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea., Son AR; Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea., Cho YI; Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea., Lee SS; Institute of Agriculture and Life Science and University-Centered Laboratory, Gyeongsang National University, Jinju 52828, Korea., Lee SS; Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea.
المصدر: Journal of animal science and technology [J Anim Sci Technol] 2023 Sep; Vol. 65 (5), pp. 951-970. Date of Electronic Publication: 2023 Sep 30.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Korean Society of Animal Sciences and Technology Country of Publication: Korea (South) NLM ID: 101661694 Publication Model: Print-Electronic Cited Medium: Print ISSN: 2055-0391 (Print) Linking ISSN: 20550391 NLM ISO Abbreviation: J Anim Sci Technol Subsets: PubMed not MEDLINE
أسماء مطبوعة: Publication: 2019- : Seoul, Korea : Korean Society of Animal Sciences and Technology
Original Publication: London : BioMed Central
مستخلص: This study utilized Italian ryegrass silage (IRGS) - based total mixed ration (TMR) as feedstuff and evaluated its effects on rumen fermentation, growth performance, blood parameters, and bacterial community in growing Hanwoo heifers. Twenty-seven Hanwoo heifers (body weight [BW], 225.11 ± 10.57 kg) were randomly allocated to three experimental diets. Heifers were fed 1 of 3 treatments as follows: TMR with oat, timothy, and alfalfa hay (CON), TMR with 19% of IRGS (L-IRGS), and TMR with 36% of IRGS (H-IRGS). Feeding high levels of IRGS (H-IRGS) and CON TMR to heifers resulted in a greater molar proportion of propionate in the rumen. The impact of different TMR diets on the BW, average daily gain, dry matter intake, and feed conversion ratio of Hanwoo heifers during the growing period did not differ ( p > 0.05). Furthermore, the blood metabolites, total protein, albumin, aspartate aminotransferase, glucose, and total cholesterol of the heifers were not affected by the different TMR diets ( p > 0.05). In terms of rumen bacterial community composition, 264 operational taxonomic units (OTUs) were observed across the three TMR diets with 240, 239, and 220 OTUs in CON, L-IRGS, and H-IRGS, respectively. IRGS-based diets increased the relative abundances of genera belonging to phylum Bacteroidetes but decreased the abundances of genus belonging to phylum Firmicutes compared with the control. Data showed that Bacteroidetes was the most dominant phylum, while Prevotella ruminicola was the dominant species across the three TMR groups. The relative abundance of Ruminococcus bromii in the rumen increased in heifers fed with high inclusion of IRGS in the TMR (H-IRGS TMR). The relative abundance of R. bromii in the rumen significantly increased when heifers were fed H-IRGS TMR while P. ruminicola increased in both L-IRGS and H-IRGS TMR groups. Results from the current study demonstrate that the inclusion of IRGS in the TMR is comparable with the TMR containing high-quality forage (CON). Thus, a high level of IRGS can be used as a replacement forage ingredient in TMR feeding and had a beneficial effect of possibly modulating the rumen bacterial community toward mainly propionate-producing microorganisms.
Competing Interests: No potential conflict of interest relevant to this article was reported.
(© Copyright 2023 Korean Society of Animal Science and Technology.)
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فهرسة مساهمة: Keywords: Bacterial community; Growth performance; Hanwoo; Italian ryegrass silage; Rumen
تواريخ الأحداث: Date Created: 20231116 Latest Revision: 20231117
رمز التحديث: 20231117
مُعرف محوري في PubMed: PMC10640938
DOI: 10.5187/jast.2023.e16
PMID: 37969342
قاعدة البيانات: MEDLINE
الوصف
تدمد:2055-0391
DOI:10.5187/jast.2023.e16