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Abstract
Guar korma meal (Cyamopsis tetragonoloba) is as an ingredient animal feed and it is considerable a source of protein which contains high protein, approximately 50 % or more. This study aimed to evaluate the effect of using guar korma meal (GKM) as a new source of protein in rations formulation of lactating buffaloes. The first trial was carried out to determine the in vitro disappearance gas production of dry and organic matter (IVDMD and IVOMD) of the different experimental concentrate feed mixtures (CFM) containing different levels of guar korma meal (GKM) instead of sunflower meal (SM). The second trial, depending on the results of first experiment, twenty buffalos averaging 450 kg live body weight (LBW) were chosen in four similar groups and in the same lactation season. Animal groups were randomly received four experimental rations containing CFM which included GKM at the rate of 0, 6, 8 and 10% in rations R1, R2, R3 and R4, respectively. At the same time, all animals received both berseem hay and rice straw with rate 25%, while CFM was offered with rate 50%. The results obtained from the first experiment revealed that the IVDMD and IVOMD in gas production increased with increasing GKM level in concentrate feed mixture. The second experiment indicated that all nutritive digestibility increased showing significant (p<0.05) increase with organic matter (OM), crude protein (CP), crude fiber (CF) and nitrogen free extract (NFE) digestibilities. The nutritive value expressed as total digestible nutrients (TDN) and digestible crud protein (DCP) increased with increasing GKM levels in the rations. Average actual milk and7% fat corrected milk (FCM) yields significantly (P<0.05) increased with increasing level of GKM. The quality of manufacture cheese improved (P<0.05) with increasing the replacement level of GKM in the rations Blood parameters were within the normal range and improve lipid profile. Average feed cost/kg milk yield decreased with increasing GKM levels