Efficacy of Dietary Urea-Impregnated Zeolite in Improving Rumen Fermentation Characteristics of Local Lamb

  • D Kardaya
  • D Sudrajat
  • E Dihansih
Keywords: rumen ammonia, lamb, urea-impregnated zeolite, VFA, slow-release urea

Abstract

A research on dietary inclusion of urea-impregnated zeolite as slow-release urea (SRU) agent had been conducted to reveal its effect on ruminal fermentation characteristics in local lambs. The research used 24 heads of 7-8 mo old of local male lambs with (20.12±2.1 kg BW) designed upon a randomized block design. Treatments consisted of diets contained no urea, urea, zeolite, and urea-impregnated zeolite. The collected data was analyzed with UNIANOVA and Duncan’s multiple-range test. Results indicated that feeding no urea, zeolite, or urea-impregnated zeolite ration produced lower ruminal ammonia nitrogen than feeding urea ration (P < 0.05). Feeding zeolite ration produced lower ruminal pH than feeding urea ration (P < 0.05). Despite total VFAs were similar across the treatments, feeding urea-impregnated zeolite ration produced lower ruminal acetate, acetate to propionate ratio, or methane production than feeding urea ration (P < 0.05). Feeding urea ration produced the lowest molar proportion of branch-chained VFAs (P < 0.05). Feeding urea ration produced higher plasma urea concentration than feeding no urea ration (2.75 mM vs. 2.16 mM; P < 0.05). In conclusion, zeolite or urea-impregnated zeolite as slow-release ammonia or SRU agent was potential in decreasing ruminal ammonia, pH, acetate to propionate ratio, methane, and maintaining low plasma urea within its physiological range.

Author Biographies

D Kardaya

Department of Animal Sciences, Faculty of Agribusiness and Food Technology, Djuanda University, Bogor, PO Box 35, Bogor 16720, Indonesia

D Sudrajat

Department of Animal Sciences, Faculty of Agribusiness and Food Technology, Djuanda University, Bogor, PO Box 35, Bogor 16720, Indonesia

E Dihansih

Department of Animal Sciences, Faculty of Agribusiness and Food Technology, Djuanda University, Bogor, PO Box 35, Bogor 16720, Indonesia

Published
2013-02-21