Impact of different levels of low-fat dried distillers grains on performance of young Nellore bulls during the finishing phase.

Autor: Alhadas HM; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.; Department of Animal Science, Texas A&M University, College Station, Texas, USA., Valadares Filho SC; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Tedeschi LO; Department of Animal Science, Texas A&M University, College Station, Texas, USA., Vilela RSR; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Souza GAP; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Lage BC; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Silva BC; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Rennó LN; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Paulino MF; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
Jazyk: angličtina
Zdroj: Animal science journal = Nihon chikusan Gakkaiho [Anim Sci J] 2021 Jan-Dec; Vol. 92 (1), pp. e13623.
DOI: 10.1111/asj.13623
Abstrakt: This study evaluated the effect of including low-fat dried distillers grains (DDG) on young Nellore bulls performance, nutritional parameters, and nitrogen metabolism. Thirty-five Nellore cattle were randomly divided into four diets: without dried distillers grains (D0) or with the inclusion of DDG at 150 g/kg (D150), 300 g/kg (D300), or 450 g/kg (D450). The evaluation period lasted 126 days, and three periods of collection of feces and urine were carried out. Final body weight (P = 0.099) and average daily gain (P = 0.097) tended to decrease linearly; the digestibility of dry matter (P < 0.001), organic matter (P < 0.001), ether extract (P < 0.001) and nonfiber carbohydrates (P < 0.001), and intakes of total digestible nutrients (TDN, P < 0.001) decreased linearly. The increase in crude protein intake (P < 0.001) did not result in an increase in the amount of nitrogen retained (P = 0.540). We concluded that the inclusion of low-fat DDG in finishing diets up to the level of 450 g/kg tends to reduce animal performance and the intake of TDN.
(© 2021 Japanese Society of Animal Science.)
Databáze: MEDLINE
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