Ingestive behavior of feedlot-finished steers submitted to energy supply patterns

Authors

  • Amanda Farias de Moura Universidade Federal de Santa Maria
  • Dari Celestino Alves Filho Universidade Federal de Santa Maria
  • Ivan Luiz Brondani Universidade Federal de Santa Maria
  • Diego Soares Machado Universidade Federal de Santa Maria
  • Leonel da Silva Rodrigues Universidade Federal de Santa Maria
  • Gilmar dos Santos Cardoso Universidade Federal de Santa Maria
  • Sander Martinho Adams Universidade Federal de Santa Maria
  • Mauren Burin da Silva Universidade Federal de Santa Maria
  • Camille Carijo Domingues Universidade Federal de Santa Maria
  • Daniele Borchate Universidade Federal de Santa Maria

DOI:

https://doi.org/10.5433/1679-0359.2018v39n6p2703

Keywords:

Concentrate, Immunocastration, Resources, Roughage, Variation.

Abstract

This study aimed to verify the effects of supplying different energy patterns on ingestive behavior of feedlot-finished cattle. Twenty-seven pure and crossbred Charolais or Nellore steers with an initial average age and weight of 22 months and 252.8 kg, respectively, were used. Three treatments were carried out, two of them with an increasing rate of concentrate in the diet during the finishing period (IT5 and IT10) and one with constant roughage to concentrate ratio (CT). The experimental design was a completely randomized design with three treatments, five periods, and nine replications. Feeding time was higher for CT (4.31 hours) when compared to IT5 (3.85 hours). Steers from the treatment IT10 remained longer in lying leisure (8.14 hours) when compared to the treatment CT (7.24 hours). A superiority of chewing per ruminated bolus was observed in IT10 (58.59 seconds) when compared to IT5 (54.11 seconds) whereas a higher number of ruminated bolus was observed in TC5 (534.68 ruminated bolus day?1) when compared to IT10 (473.77 ruminated bolus day?1). Animals from CT presented a higher dry matter intake (9.54 kg day?1) than those from IT10 (8.63 kg day?1). Steers from CT and IT5 showed a higher NDF intake (3.63 and 3.58 kg NDF day?1, respectively) when compared to IT10 (3.29 kg NDF day?1). The constant energy pattern increases feeding time and dry matter intake. The one of less vigorous growth increases the number of bolus ruminated per day, while the one of more vigorous growth increases idle time and chews per bolus and decreases the intake of neutral detergent fiber.

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Author Biographies

Amanda Farias de Moura, Universidade Federal de Santa Maria

Discente, Curso de Doutorado do Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, UFSM, Santa Maria, RS, Brasil.

Dari Celestino Alves Filho, Universidade Federal de Santa Maria

Prof. Dr., Departamento de Zootecnia, UFSM, Santa Maria, RS, Brasil.

Ivan Luiz Brondani, Universidade Federal de Santa Maria

Prof. Dr., Departamento de Zootecnia, UFSM, Santa Maria, RS, Brasil.

Diego Soares Machado, Universidade Federal de Santa Maria

Discente, Curso de Doutorado do Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, UFSM, Santa Maria, RS, Brasil.

Leonel da Silva Rodrigues, Universidade Federal de Santa Maria

Discente, Curso de Doutorado do Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, UFSM, Santa Maria, RS, Brasil.

Gilmar dos Santos Cardoso, Universidade Federal de Santa Maria

Discente, Curso de Doutorado do Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, UFSM, Santa Maria, RS, Brasil.

Sander Martinho Adams, Universidade Federal de Santa Maria

Discente, Curso de Mestrado do Programa de Pós-Graduação em Zootecnia, UFSM, Santa Maria, RS, Brasil.

Mauren Burin da Silva, Universidade Federal de Santa Maria

Discente, Curso de Mestrado do Programa de Pós-Graduação em Zootecnia, UFSM, Santa Maria, RS, Brasil.

Camille Carijo Domingues, Universidade Federal de Santa Maria

Discente, Curso de Doutorado do Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, UFSM, Santa Maria, RS, Brasil.

Daniele Borchate, Universidade Federal de Santa Maria

Discente, Curso de Mestrado do Programa de Pós-Graduação em Zootecnia, UFSM, Santa Maria, RS, Brasil.

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Published

2018-11-30

How to Cite

Moura, A. F. de, Alves Filho, D. C., Brondani, I. L., Machado, D. S., Rodrigues, L. da S., Cardoso, G. dos S., … Borchate, D. (2018). Ingestive behavior of feedlot-finished steers submitted to energy supply patterns. Semina: Ciências Agrárias, 39(6), 2703–2716. https://doi.org/10.5433/1679-0359.2018v39n6p2703

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