Effects of supplementation plan on intake, digestibility, eating behavior, growth performance, and carcass characteristics of grazing beef cattle

Authors

DOI:

https://doi.org/10.5433/1679-0359.2019v40n6Supl2p3233

Keywords:

Beef calves, Nellore, Supplement, Tropical forage.

Abstract

This study was designed to evaluate the effects of different supplementation plans on the nutrient intake, apparent total-tract digestibility, grazing behavior, growth performance, and carcass characteristics of beef cattle under grazing conditions from ages 4 to 18 months old. The beef calves grazed Brachiaria decumbens in four seasons: rainy-dry transition, dry, dry-rainy transition, and rainy. Forty-four animals (11 per treatment) were randomly assigned to one of four nutritional plans of supplementation defined by the quantity of supplement offered: control, low, medium, and high supplementation. There was no difference (P > 0.10) in dry matter intake (DMI). However, animals receiving medium and high supplementation had decreased (P < 0.10) forage dry matter intake (FDMI) compared with those under non- and low supplementation. The DMI and FDMI were lower (P < 0.10) in the dry season. During the rainy season, the grazing time decreased (P < 0.10) for animals receiving supplementation compared with non-supplemented ones, but was similar between medium and high supplementation. The performance and carcass characteristics were greater (P < 0.10) for high and medium supplementation compared with low and control. In conclusion, increasing the supplementation plans for beef cattle in tropical pastures increases the nutrient intake but decreases FDMI. The performance also increases with the supplementation plan; however, the growth rate is affected by the grazing season.

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Author Biographies

Nelcino Francisco De Paula, Universidade Federal de Mato Grosso

Prof. Dr., Faculdade de Agronomia e Zootecnia, Departamento de Zootecnia e Extensão Rural, Universidade Federal do Mato Grosso, UFMT, Cuiabá, MT, Brasil.

Mário Fonseca Paulino, Universidade Federal de Viçosa

Prof. Dr., Departamento de Zootecnia, Universidade Federal de Viçosa, UFV, Viçosa, MG, Brasil.

Victor Rezende Moreira Couto, Universidade Federal de Goiás

Prof. Dr., Departamento de Produção Animal, Universidade Federal de Goiás, UFG, Goiânia, GO, Brasil.

Edenio Detmann, Universidade Federal de Viçosa

Prof. Dr., Departamento de Zootecnia, UFV, Viçosa, MG, Brasil.

Ivan França Smith Maciel, Fazenda Olhos Verdes

Zootecnista, Fazenda Olhos Verdes, Campo Grande, MS, Brasil.

Lívia Vieira Barros, Universidade Federal de Mato Grosso

Profa. Dra., Faculdade de Agronomia e Zootecnia, Departamento de Zootecnia e Extensão Rural, UFMT, Cuiabá, MT, Brasil.

Sidnei Antônio Lopes, Universidade Federal de Viçosa

Discente de Pós-Doutorado, Departamento de Zootecnia, UFV, Viçosa, MG, Brasil.

Ériton Egídio Lisboa Valente, Universidade Estadual do Oeste do Paraná

Prof. Dr., Departamento de Zootecnia, Universidade Estadual do Oeste do Paraná, UNIOESTE, Marechal Cândido Rondon, PR, Brasil.

Joanis Tilemahos Zervoudakis, Universidade Federal de Mato Grosso

Prof. Dr., Faculdade de Medicina Veterinária, UFMT, Cuiabá, MT, Brasil.

Leandro Soares Martins, Centro de Pesquisa Nutripura

Pesquisador, Centro de Pesquisa Nutripura, Rondonópolis, MT, Brasil.

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Published

2019-09-30

How to Cite

De Paula, N. F., Paulino, M. F., Couto, V. R. M., Detmann, E., Maciel, I. F. S., Barros, L. V., … Martins, L. S. (2019). Effects of supplementation plan on intake, digestibility, eating behavior, growth performance, and carcass characteristics of grazing beef cattle. Semina: Ciências Agrárias, 40(6Supl2), 3233–3248. https://doi.org/10.5433/1679-0359.2019v40n6Supl2p3233

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