Nutritive value of corn and sorghum silages and its influence on dairy cow performance

Revista Brasileira de Zootecnia

Nascimento, Willian Gonçalves do¹  Surault, Fabien³  Huyghe, Christian³  Prado, Ivanor Nunes do²  Emile, Jean Claude³  Jobim, Clóves Cabreira² 

[1] Instituto Agronômico do Paraná, Paranavaí;Universidade Estadual de Maringá;Institut National de la Recherche Agronomique, Lusignan, França

关键词: animal performance;    dairy cows;    digestibility;    sweet sorghum   Introdução Considerada uma das alternativas para a alimentação animal;    a cultura do sorgo forrageiro tem papel importante na metade do sul da França por sua capacidade de adaptação à seca;    fator limitante à cultura do milho;    garantindo melhores resultados econômicos à atividade;   

DOI  :  10.1590/S1516-35982008000500018

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The effect of feeding grain sorghum silage, sweet sorghum silage, and corn silage on intake, milk production, milk composition, and nutrient digestibility of lactation dairy cows was evaluated. Twenty-four Prim'Holstein (PO) cows were used, forming three groups of eight cows each. The experimental treatments were: 1) corn silage; 2) grain sorghum silage; and 3) sweet sorghum silage, fed ad libitum, with two commercial concentrates, distributed following the cow milk production. Grain sorghum silage promoted greater DM intake (22.98 kg/day) compared to corn silage (21.95 kg/day), and sweet sorghum silage (19.43 kg/day). Dry matter intake was greater for corn silage than for sweet sorghum silage. Water intake (L/cow/day) was similar for the animals fed corn silage (71.91) and grain sorghum silage (76.30), and both were greater than the water intake of animals fed sweet sorghum silage (56.95). Total milk production (28.81; 24.69 and 24.14 kg/day), 4% fat corrected milk (30.65; 25.63 and 26.10 kg/day), and milk chemical composition was greater for cows fed corn silage when compared to the ones receiving grain sorghum silage and sweet sorghum silage. Cows fed sweet sorghum silage, but showed higher milk fat percentage (4.56%) compared to cows fed corn silage (4.39%) or grain sorghum silage (4.31%). Milk protein concentration was higher for cows fed corn silage (3.25%), intermediate for cows fed sweet sorghum silage (3.05%), and lower for the ones fed grain sorghum silage (2.97%). Nutrient digestibility coefficients were greater for cows fed sweet sorghum silage compared to other silages.

【 授权许可】

CC BY-NC