EFFECT OF BYPASS PROTEIN ON BUFFALO CALVES IN PANCHMAHAL DISTRICT
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Date
2008
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AAU, Anand
Abstract
A growth experiment of 168 days (24 weeks) duration was carried out on twenty four buffalo heifer calves to study the comparative effect of feeding compound concentrate mixture with bypass protein or without bypass protein. The two treatments were T1: control concentrate mixture without bypass protein and T2: concentrate mixture with bypass protein in which formaldehyde treated guar bhardo, groundnut extraction and rapeseed extraction were used as sources of by pass protein. Individual completely randomized design was followed. The growing buffalo heifer calves were fed as per ICAR (1998) feeding standards to meet nutrient requirement in terms of DM, DCP and TDN. Two kg of green grass was provided daily to all the calves to meet vitamin A requirement. The results revealed significant treatment differences for total and average daily weight gain (P<0.01) and various body measurements (P<0.01) except body length. The average daily gain in weight was 398.31 and 535.71 g in T1 and T2, respectively. The data for daily DM intake kg per day per animal, per 100 kg body weight and g per kg metabolic body weight were 3.27, 3.18 and 96.90 for control (T1) while 3.51, 3.13 and 101.18 for treatment (T2) group. Average daily CP, DCP and TDN intakes were 558.68 and 577.82 g; 291.38 and 330.11 g and 1.93 and 2.09 kg in T1 and T2, respectively. The treatment differences were found to be significant for CP (P<0.01) and DCP (P<0.05) intake while non significant for TDN intake. These data suggested that feeding of bypass protein concentrate mixture was found superior than feeding of control concentrate mixture without by pass protein. The digestibility coefficients were 63.45 and 67.01 % for dry matter (P<0.05), 69.67 and 74.07 % for crude protein (P<0.05), 72.32 and 76.61 % for ether extract (P<0.05) and 68.14 and 75.03 % for crude fiber (P<0.01) under T1 and T2, respectively. The digestibility coefficients for organic matter (67.64 and 69.79 %) and NFE (66.54 and 62.91) were at par with feeding of bypass protein. The efficiency of feed utilization (DM intake per kg gain) was higher in T1 (8.43 kg) followed by T2 (6.41 kg). The treatment differences were found to be statistically significant (P<0.01). Similar significant differences were also observed for CP, DCP TDN intake per kg gain (1.06, 0.76 and 4.89 kg and 0.76, 0.62 and 3.91 kg, respectively in T1 and T2). The daily cost of feed was Rs. 12.53 and 14.89, while the cost of feed (per kg gain) was Rs. 31.45 and f27.79, respectively in T1 and T2. The daily feed cost was lower in T1, while the feed cost per kg gain was significantly lower in T2 (P<0.01). It is inferred that feeding of bypass protein to growing buffalo heifer calves resulted in significant reduction (11.64 %) in feed cost per kg gain in weight. The overall results indicated that the growth of calves fed concentrate mixture with bypass protein was improved significantly in terms of growth rate, efficiency of feed utilization and cost of feeding in the present study.
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ANIMAL NUTRITION, A STUDY