Evaluation of different supplements for lactating crossbred cows fed sugarcane: performance and digestibility

Revista Brasileira de Zootecnia

Araújo, Paulo Renato Barros³  Melo, Airon Aparecido Silva de³  Ramalho, Ricardo Pimentel³  Ferreira, Marcelo de Andrade²  Vilela, Márcio da Silva¹  Farias, Iderval⁴  Santos, Mércia Virginia Ferreira dos²  Véras, Antonia Sherlânea Chaves² 

[1] UFRPE, Recife;UFRPE;IPA

关键词: intake;    milk production and composition;    supplementation     IntroduçãoA produção de leite é largamente dependente do consumo de energia e proteína metabolizáveis os quais;    são altamente influenciados;    tanto pela qualidade da forragem e interação da forragem com a população microbiana do rúmen;    quanto pelos fatores relacionados aos animais e a outros nutrientes da dieta (Allen;    1996);   

DOI  :  10.1590/S1516-35982003000300030

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objective of this study was evaluate the intake, milk production and composition, nutrients digestibility and feed efficiency of crossbred cows of low potential of production fed diets based on sugar cane. It was used eight cows crossbred Holstein/Gir, with medium live weight of 425 kg, after the initial third of lactation. They were distributed in two Latin squares (4x4), in agreement with the lactation order, feeding with complete diets to the sugarcane base, being, cane more urea (CAU); cane, urea and cottonseed meal (CFA); cane, urea and corn (CMM); cane, urea and wheat meal (CFT). The intakes of DM, ADF, NDF and OM were higher for CFA and CFT in relation to the others. The intake CP was higher to CFA in relation to CAU. However, the intakes of THC, FNC and TDN presented the same behavior, being higher for CFT and CFA in relation to CAU. The digestibility for DM and OM were higher to CMM in relation the others; however the digestibility of the CP was higher to CFA, in relation to the others. Those digestibilities of the NDF, THC were higher to CMM in relation to CFA. However the digestibility of the ADF was lower to CFA in relationship the others. The levels of TDN were higher to CMM and CAU in relation the others, ranged from 88.25 to 74.44%. The milk production corrected for 4.0% of fat was lower to CAU in relation to the others treatments. There was no alteration in the protein and milk fat levels. However, for protein and fat productions the milk, the treatment CAU was lower to the others. CFA presented to lower feed efficiency.

【 授权许可】

CC BY-NC