Citrus pulp in diets for milking cows. 1. Intake of nutrients, milk production and composition

Revista Brasileira de Zootecnia

Mendes Neto, Josué³  Magalhães, André Luiz Rodrigues³  Valadares Filho, Sebastião de Campos¹  Queiroz, Augusto César de¹  Assis, Anderson Jorge de³  Euclydes, Ricardo Frederico¹  Mendonça, Sandro de Souza²  Lana, Rogério de Paula¹  Campos, José Maurício de Souza¹ 

[1] UFV;UESB;CAPES

关键词: feeding;    sorghun silage;    total mixed rations;    weight variation  IntroduçãoA pecuária de leite passa por profundas transformações econômicas nesses últimos anos;    tanto no âmbito da produção primária;    quanto no processamento e distribuição;   

DOI  :  10.1590/S1516-35982004000100028

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

Twelve milking cows, purebred and crossbred Holstein, with average weight of 550 kg, were allotted to three Latin Squares 4 x 4. The experimental period lasted 18 days, seven days for the adaptation to the diets and eleven days for data collection. Feeding was supplied to met the requirements of non pregnant cows, producing 20 kg of milk with 4.5% fat. This work aimed to evaluate the effects of replacement (0, 33, 67, 100%) of corn meal by pelleted citrus pulp in the concentrate in total mixed rations, on nutrients intake, milk production and composition and weight variation. The treatments did not differ for milk production and composition with or without correction for 4% fat, fat content, protein, total dry extract, degreased dry extract. The nutrients intake was not affected by level of replacement of corn meal by citrus pulp. However, the ether extract intake decreased 0.47 g for each 1% increase in citrus pulp in the concentrate. The citrus pulp can replace up to 100% of the corn in total mixed rations for lactating cows.

【 授权许可】

CC BY-NC