Influence of Replacement of Soya By-products with Soya Pulp on Milk Yield, Composition and Blood Parameters in Dairy Cows

The present experiment was conducted to evaluate the effect of replacing soya by-products with soya pulp at varying levels on milk yield, milk composition and blood parameters in dairy cows. Twenty cows of same parity, age and average milk yield (15–25 l/d) were distributed in four treatment groups (T₁, T₂, T₃ and T₄) of five animals each. Cows in all the groups were fed basal diet consisting of maize fodder, maize silage, concentrate mixture and wheat straw (NRC, 2001). The soya byproducts in the concentrate mixture were replaced with soya pulp at 0, 10, 20 and 30% levels in groups T₁, T₂, T₃ and T₄, respectively. All the diets were iso-nitrogenous. The animals of group T₁ served as control. Significantly (P<0.05) higher DM and intake milk yield were observed in group T₃ and lower (P<0.05) values were recorded in groups control and T₂. There was no adverse effect of inclusion of soya pulp at varying levels on milk composition like fat, SNF and total solids which were similar among the groups. There was no deleterious effect of soya pulp on blood metabolites viz., glucose, total protein and blood urea nitrogen. It was concluded that soya pulp can replace other soya byproducts viz., soya bean meal and full-fat soya in the concentrate mixture up to 30% without any adverse effect on DM intake, milk yield and milk composition in dairy cows.