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EFFECT OF WASHING AND PHYSICAL FORM OF CHEMICALLY TREATED BARLEY STRAW ON NUTRITIVE VALUE, PHENOLIC COMPOUND AND ACTIVITY OF RUMEN BACTERIA 2-Ammonia hydroxide treatment | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 40, Issue 1, 2009, Pages 148-157 | ||
| Authors | ||
| Jamal A. Tawffek; Shaker A. Hassan | ||
| Abstract | ||
| The objective of this experiment was to study the effect of washing chopped and ground treated barley straw with ammonium hydroxide solution (equivalent to supply 3.3% nitrogen in DM basis) on chemical composition, invitro digestibility, phenolic compounds concentration and number of aerobic and anaerobic bacteria, by using 2x2x2 factorial arrangement for treatments. The results indicated that ammonium hydroxide treated barley straw significantly increased total N content, cellulose, organic matter(OM) digestibility, pH and phenolic compounds concentration, with highly reduction in DM,OM,NDF,ADF and lignin as compared with untreated straw. However, no differences were shown in aerobic and anaerobic bacteria between treated and untreated straw. Rumen liquor of invitro experiment indicated a significantly increased in content of phenolic compounds, aerobic and anaerobic bacteria, ammonia N and pH for treated straw as compared with untreated. Washed treated straw highly increased OM, aerobic and anaerobic bacteria and significantly reduced the content of total N and phenolic compounds as compared with unwashed treated straw. The effect of physical form on ammonium hydroxide treatment indicated that ground treated straw significantly increased OM and decreased lignin content as compared with chopped treated straw. The recommendation was to study quality and quantity of phenolics in the rumen after consumption treated straw and animal's body ability to discard it. | ||
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