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Pakistan Journal of Nutrition
Year: 2009  |  Volume: 8  |  Issue: 7  |  Page No.: 1048 - 1051

Manipulation of Rumen Ecology by Malate and Yeast in Native Cattle

Sittisak Khampa, Pala Chaowarat, Uthai Koatdoke, Rungson Singhalert and Metha Wanapat    

Abstract: Four, one-year old of native cattle were randomly assigned according to a 2x2 Factorial arrangement in a 4x4 Latin square design to study supplementation of malate level at 500 and 1,000 g with yeast (Saccharomyces cerevisiae) at 1,000 and 2,000 g in concentrate containing high levels of cassava chip. The treatments were as follows: T1 = supplementation of malate at 500 g with yeast at 1,000 g; T2 = supplementation of malate at 500 g with yeast at 2,000 g; T3 = supplementation of malate at 1,000 g with yeast at 1,000 g; T4 = supplementation of malate at 1,000 g with yeast at 2,000 g in concentrate, respectively. The animals were offered the treatment concentrate at 1% BW of DM and urea-treated rice straw was fed ad libitum. The results revealed that concentration of volatile fatty acid was significantly different especially the concentration of propionic acid was slightly higher in cattle receiving T4 than T3, T2 and T1 (23.3, 21.9, 20.9 and 18.0%, respectively). The populations of protozoa and fungal zoospores were significantly different as affected by malate level and yeast. In conclusion, the combined use of concentrate containing high level of cassava chip at 70% DM with malate at 1,000 g and yeast at 2,000 g in concentrate with urea-treated rice straw as a roughage could improved rumen ecology in native cattle.

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