Performance and carcass characteristics of young cattle fed with soybean meal treated with tannins |
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| Authors: | Rafael Mezzomo Pedro Veiga Rodrigues Paulino Marcília Medrado Barbosa Taiane da Silva Martins Mario Fonseca Paulino Kaliandra Souza Alves Daiany Iris Gomes João Paulo Ismério dos Santos Monnerat |
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| Affiliation: | 1. Campus de Parauapebas, Universidade Federal Rural da Amaz?nia, Parauapebas;2. Departamento de Zootecnia, Universidade Federal de Vi?osa, Vi?osa;3. Departamento de Zootecnia, Universidade Federal Rural de Pernambuco, Recife, Brazil |
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| Abstract: | This study aimed to evaluate the effects of replacement of soybean meal (SBM) with soybean meal treated with tannin (SBMT) on the intake, digestibility, performance and characteristics of the carcasses of young cattle fed a high‐concentrate diet. Forty‐two Nellore bulls with body weight of 244.5 ± 4.99 kg were used. Diets had the inclusion of 7.5% SBM, with a proportion of that SBM (0, 33, 66 or 100%) replaced for SBMT; and other treatment (SBMT + urea) just with 2.5% of SBM which was treated with tannins. Seven animals were randomly selected and slaughtered, and the remaining animals were distributed on treatments and remained for 112 days. After, all animals were slaughtered. There was a linear decline in dry matter intake (P = 0.026) when SBM was replaced with SBMT. No decrease in carcass weight (P > 0.05) was observed. The efficiency of carcass weight gain showed a quadratic function effect (P = 0.049). There were changes in carcass gain composition when SBMT was added (P < 0.05), with an increase in muscle and reduction in fat deposition. The use of SBMT in place of SBM causes changes in body gain composition in animals and reduces DM intake by the animals, achieving a better feed conversion efficiency. |
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| Keywords: | beef muscle deposition protein tannin |
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