Effects of high unhulled rice feeding on lactation performance of mid to late lactation cow
2013
Wada, T. (Fukui Prefectural Livestock Experiment Station (Japan)) | Takabatake, K. | Asakura, Y. | Kato, N.
Nowadays, it is important to promote utilization of feed rice in dairy farm. Six Holstein cows were used in 3*3 Latin square design to examine the effects of large supply of unhulled rice with separate feeding on lactation performance. Diets contained unhulled rice at the level of 0%, 30% and 60% in the concentrate as a substitute of formula feed, respectively. The amounts of grass silage were reduced, as more unhulled rice included. As a result, dietary treatments did not affect dry matter intake, milk yield and milk composition. And rumen fluid characteristics and blood composition were not affected by feeding unhulled rice. Our results indicate that crushed unhulled rice is an available replacement for feed mixture in mid to late lactation cow diets, and that it can be included in rations to the level of 60% of unhulled rice in the concentrate (34% of entire feed) without adverse effects on milk production and health. However, unhulled rice should be crushed below approximately 1mm in the particle size to be digested properly.
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