Effect of Feeding Wet Distillers Grains with Solubles (WDGS) on Milk Yield and Composition in Crossbred Cows
P. Kavitha A. Ravi D. Srinivasa Rao Y. Ravindra Reddy K. Padmaja
Vol 11(3), 72-78
To arrive at the optimum level of Wet Distillers Grains with Solubles (WDGS) in dairy cow diets, a 120-day lactation trial, using hybrid napier (APBN-1) green fodder and paddy straw as roughage and concentrate mixture (T1, control) or WDGS @ 15 (T2), 25 (T3) and 35 % (T4) of DM requirement using 24 Jersy x Sahiwal crossbred dairy cows @ 6 cows per treatment allotted at random to one of the four treatments. The chemical composition of the WDGS for DM, CP, CF, EE, NFE, TA, Ca and P was 28.22, 36.72, 7.16, 8.74, 42.12, 5.25, 0.32 and 0.67 per cent. There was no significant difference in DMI (kg/d) and body weight change among the groups. CP and EE intakes were significantly (P<0.05) increased with the increase in the level of WDGS inclusion from 0 to 35%. Inclusion of WDGS from 0 (T1) to 35% (T4) of DM requirement increased (P>0.05) milk yield (4.74 to 5.8 kg/d), 4% FCM (5.39 to 7.04), % fat (4.99 to 5.52), fat yield (0.23 to 0.31 kg/d), protein yield (0.17 to 0.20 kg/d). Feed cost per kg FCM has decreased (P>0.05) from Rs.23.95 (T1) to Rs.19.76 (T4). Mean MUN (mg/dl) lower (P<0.01) in T2 (17.67), when compared to other treatments. Based on the results of the study it was concluded that WDGS can be included up to 35% of DM requirement for profitable milk production in crossbred dairy cattle rations.
Keywords : Crossbred Dairy Cows Milk Composition Milk Yield Nutrient Intake WDGS
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