The effects of the addition of dry whey powder on the fermentation quality of corn silage, its intake by sheep, and its degradation in the rumen of sheep
2005
Shibayama, S.(Rakuno Gakuen Univ., Ebetsu, Hokkaido (Japan)) | Izumi, K. | Morimoto, K. | No, E. | Nakui, T.
It was studied to evaluate the effect of corn silage with and without dry whey powder additive on its fermentation quality, intake by sheep and degradation in the rumen of sheep. We compared control corn silage, whey added to corn at 5% weight on fresh matter basis, urea added to corn at 1 % weight, and whey supplemented by control corn silage at 5% weight at feeding. The test was carried by using 3 sheep (live weights: 57.3 kg), each fitted with a rumen cannula. They were maintained in individual metabolic cages, and were fed corn silage ad libitum once a day. Degradation in the rumen was investigated by the nylon bag technique. Fermentation quality of silage was found to be better in whey added to corn at 5% than in other treatments; V-SCORE was also the highest in whey added to corn at 5%. Temperature transition after opening the silo was the slowest in whey added to corn at 5% than in other treatments. Both dry matter intake and intake rate were the highest in the case of whey added to corn at 5%. The degradability of dry matter in the rumen decreased in the following order: whey supplemented by control corn silage at 5% weight at feeding, urea added to corn at 1%, whey added to corn at 5% and control corn silage, but no great difference was observed between urea added to corn at 1% and whey added to corn at 5%. The present results clearly show that dry whey powder is an effective additive to corn silage.
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