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Asian Journal of Animal Sciences
  Year: 2007 | Volume: 1 | Issue: 1 | Page No.: 33-39
DOI: 10.3923/ajas.2007.33.39
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Influence of 10 PPM Zinc With or Without Enzyme/Yeast Supplementation on Rumen Fermentation

C. Kathirvelan and V. Balakrishnan

As 10 ppm zinc (Z) in rumen liquor retards urea (U) hydrolysis and prevents ammonia toxicity, its effect and the supplemental value of enzyme (E)/yeast (Y) on rumen fermentation were studied in Hohenheim gas production test. Treatments includes control (C), CU, CUZ, CUE, CUEZ, CUY, CUYZ experimented in duplicate in two sequential runs with two replications in each run. CUZ had significantly (p<0.01) lowest gas production at 24 h (15.33 mL) where as significantly (p<0.01) highest gas production was recored in CUY (43.83 mL) and CUYZ (41.08 mL) that maintained untill 48 h of incubation. The molar proportion of propionate was increased whenever zinc supplemented but at non significant level. The acetate to propionate ratio ranged from 3.35 to 4.00. Energetic efficiency was significantly (p<0.01) increased in CUEZ (30.75%) over (C), (CU), (CUZ) and was inturn significantly (p<0.01) lower than CUY (36.59%). Maximum energetic efficiency (p<0.01) was recorded in CUYZ (38.67%) than the rest of treatments. Zinc consistently improved energetic efficiency over those treatments that do not have Zinc. It is thus concluded that while supplementing Zinc at 10 ppm to retard urea hydrolysis, 1 CFU of yeast needs to be included to offset the ill effects of Zinc on rumen fermentation. The projected equivalent in the diet of adult cattle weighing 500 kg is 1.31 g Zinc/day and 3,000 CFU of yeast.
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How to cite this article:

C. Kathirvelan and V. Balakrishnan, 2007. Influence of 10 PPM Zinc With or Without Enzyme/Yeast Supplementation on Rumen Fermentation. Asian Journal of Animal Sciences, 1: 33-39.

DOI: 10.3923/ajas.2007.33.39






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