Utilization of Rice Straw Ensiling by Either Solution of Corn Steep Liquor or Urea to Ameliorate Productive Performance of Dairy Goats

Abstract

This study investigated the effect of feeding ensiling rice straw (RS) by 3% urea or 20% corn steep liquor (CSL) solutions on chemical analysis of feeds, dry matter intake, kids' numbers and weight, suckling and lactation milk yield, some blood parameters and economic efficiency in goats. Trial conducted on twenty-four dairy Zaraibi goats (N=8/ group) with live body weight up to 37.22 kg and at the third parity of lactation. They randomly allocated to receive three trial rations as the following; D1 (60% concentrated feed mixture (CFM) 40% untreated RS) used as control, D2 (40% CFM + 60 % RS ensiling by urea) and D3 (40% CFM + 60 % RS by ensiling CSL) used as tested rations. Results indicated that ensiling RS with 3% urea or 20% CSL solutions improved (P<0.05) its chemical composition (especially crude protein, hemicellulose and cellulose contains) compare with untreated rice straw. Also, D2 and D3 groups had higher (P<0.05) values of NDF, ADF, ADL, daily dry matter intake, kids number and weight, higher milk amount (as suckling and lactation) and the highest net income than D1 group. However, no-significant differences found in blood parameters among D1, D2 and D3 goats. According to the results of this study, feeding lactating goats with ensiling RS by 3% urea or 20% CSL solutions has effect on production status and reducing CFM consumption up to 33.33% which reversing economic efficiency compared to untreated RS.