Sugarcane bagasse as exclusive roughage for dairy heifers

Revista Brasileira de Zootecnia (Print)

Oliveira, Júlio César Vieira de¹  Santos, Djalma Cordeiro dos¹  Silva, Randerson Cavalcante²  Ferreira, Marcelo de Andrade²  Inácio, Jonas Gomes²  Soares, Luciana Felizardo Pereira²  Campos, José Maurício de Souza³  Silva, Janaina de Lima⁴ 

[1] Instituto Agronômico de Pernambuco, Arcoverde, Brazil;Universidade Federal Rural de Pernambuco, Recife, Brazil;Universidade Federal de Viçosa, Viçosa, Brazil;Universidade Federal do Oeste da Bahia, Barra, Brazil

关键词: agro-industrial waste;    digestibility;    intake;    morphometry;    rearing;    semiarid.;   

DOI  :  10.1590/s1806-92902017000100012

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objective of this study was to evaluate the effect of different concentrate levels (40, 50, 60, and 70% on dry matter basis) on intake, digestibility of nutrients, and performance of heifers fed sugarcane bagasse as exclusive roughage. Twenty Girolando heifers, with an average body weight of 198±25.6 kg were assigned to a completely randomized design, established according to body weight. The intake of dry matter (5.12 to 7.73 kg d-1), organic matter (4.72 to 7.32 kg d-1), crude protein (0.71 to 1.05 kg d-1), and digestible organic matter (3.09 to 4.77 kg d-1) linearly increased with the inclusion of concentrate in the diets. The final weight (238 to 299 kg d-1), body weight gain (0.50 to 1.20 kg d-1), and total weight gain (35.2 to 83.6 kg d-1) linearly increased with the concentrate levels. Considering the occurrence of the first calving at 24 months, a 50:50 ratio of sugarcane bagasse to concentrate seems to be the most appropriate for crossbred heifers.

【 授权许可】

Unknown