<b>Multiple supplements containing spineless cactus enriched with urea forcattle

Cleber Thiago Ferreira Costa; Marcelo de Andrade Ferreira; José Maurício de Souza Campos; Janaina de Lima Silva; Rafael de Paula Xavier de Andrade; Maria Gabriela da Conceição

doi:10.4025/actascianimsci.v39i4.34427

Cleber Thiago Ferreira Costa Instituto Federal de Educação, Ciência e Tecnologia
Marcelo de Andrade Ferreira Universidade Federal Rural de Pernambuco
José Maurício de Souza Campos Universidade Federal de Viçosa
Janaina de Lima Silva Universidade Federal do Oeste da Bahia
Rafael de Paula Xavier de Andrade Universidade Federal do Sul e Sudeste do Pará
Maria Gabriela da Conceição Universidade Federal de Pernambuco

DOI: https://doi.org/10.4025/actascianimsci.v39i4.34427

Keywords: intake, rumen pH, supplementation, volatile fatty acids.

Abstract

This study was realized to evaluate the effect of the ‘multiple supplements’ containing spineless cactus enriched with urea (0, 1, 2 and 3% on dry matter basis - DM) as a replacement to a traditional supplement (control) on ruminal parameters and microbial protein synthesis in crossbred steers. Five steers(½ Holstein x Zebu) can nulated in the rumen, with an average initial body weight of 240 ± 22.1 kg were used in a 5 × 5 Latin square. A quadratic effect was observed for DM intake and N retention, with maximum values of 6.97 kg d^-1 and 50.9 gd^-1with the inclusion of 1.8 and 2.1% urea, respectively. Maximum concentrations of 16.2, 23.2 and 24.3 mg dL^-1of N-NH₃were recorded in animals fed spineless cactus enriched with 1, 2, and 3% of urea. There was a quadratic effect on ruminal pH, with a value of 6.45 at 4.08 hours after feeding. Microbial synthesis efficiency of 103 g CPkg^-1 TDN was obtained with the inclusion of 1.6% urea. Multiple supplements containing spineless cactus enriched with 1.6 up to 1.8% urea in replacement of a traditional supplement is recommended for cattle.

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Author Biography

Cleber Thiago Ferreira Costa, Instituto Federal de Educação, Ciência e Tecnologia

Zootecnista e Meste em Zootecnia pela Universidade Federal dos Vales do Jequitinhonha e Mucuri. Doutora em Zootecnia pela Universidade Federal Rural de Pernambuco. Pós-Doutorado pela Universidade Federal Rural de Pernambuco.

Atualmente é professora Adjunta na Universidade Federal do Oeste da Bahia.

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