Does vitamin blends supplementation affect the animal performance, carcass traits, and nutrient digestibility of young Nellore finishing bulls?

Autor: Andrade DR; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Silva FAS; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Pinheiro JS; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., da Silva JTD; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Trópia NV; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Godoi LA; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Vilela RSR; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Cidrini FAA; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Rennó LN; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil., Zanetti D; Department of Animal Science, Instituto Federal de Educação, Ciência e Tecnologia do Sul de Minas Gerais, Campus Machado, Minas Gerais, 37750-000, Brazil., Acedo TS; DSM Nutritional Products Brazil S.A., São Paulo, SP 01541-905, Brazil., Filho SCV; Department of Animal Science, Universidade Federal de Viçosa, Campus Viçosa, Minas Gerais, 36570-000, Brazil.
Jazyk: angličtina
Zdroj: Animal bioscience [Anim Biosci] 2023 Dec; Vol. 36 (12), pp. 1831-1841. Date of Electronic Publication: 2023 Aug 23.
DOI: 10.5713/ab.23.0087
Abstrakt: Objective: This study was realized to evaluate the effects of supplementation with blends of water and fat-soluble vitamins on animal performance and carcass traits of young Nellore bulls.
Methods: Forty-three Nellore bulls, with an initial weight of 261±27.3 kg and a mean age of 8±1.0 months, were used. Five animals were slaughtered at the beginning of the experiment (reference group), to determine the initial empty body weight of the bulls that remained in the experiment. The remaining 38 bulls were fed ad libitum and distributed in a completely randomized design in a 2×2 factorial scheme, with or without supplementation of water-soluble (B-blend+ or B-blend-) and fat-soluble (ADE+ or ADE-) vitamin blends. Diets were isonitrogenous (120 g of crude protein/kg dry matter [DM] of total mixed ration) and consisted of a roughage:concentrate rate of 30:70 based on total DM of diet. The experiment lasted 170 days, with 30 days of adaptation and 140 days for data collection. At the beginning and end of the experimental period, the bulls were weighed to determine the average daily gain. To estimate the apparent digestibility of nutrients and microbial efficiency, spot collections of feces and urine were performed for five consecutive days.
Results: DM, ashes, organic matter, crude protein, ethereal extract, neutral detergent fiber corrected for residual ash and residual nitrogenous, and N intake and apparent digestibility were not influenced by vitamin supplementation, but total digestible nutrients intake and non-fibrous carbohydrates digestibility were influenced by B complex vitamin supplementation. Nitrogen balance, microbial efficiency, and performance data were not influenced (p>0.05) by vitamin supplementation.
Conclusion: Vitamin supplementation (a blend of water-soluble and fat-soluble vitamins or their combinations) does not influence the animal performance and carcass traits of young Nellore bulls.
Databáze: MEDLINE
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