Effect of Different Intact Proteins on Nutrient Utilization and Growth Response of Crossbred (Bos taurus x Bos indicus) Male Calves

Abstract

Sil, B., Pathak, N. N. and Kamra, D. N. 1994. Effect of different intact proteins on nutrient utilization and growth response of crossbred (Bos taurus x Bos indicus) male calves J. Appl. Anim. Res. 5: 153–159.

Three sources of intact protein viz., 10% solvent extracted groundnut cake, 12% solvent extracted mustard oil cake and 9% fish meal were used in the concentrate mixtures to supply about 20% proein of requirement in groups 1, 2 & 3, respectively. Another 25% crude protein was supplied through 2% urea in the concentrate mixtures. These concentrate mixtures were fed along with wheat straw in 1:1 ratio to five growing crossbred calves in each of the three groups. Mean intake of dry matter (DM), crude protein (CP), digestible crude protein (DCP) and total digestible nutrient (TDN) per W ⁷⁵kg was 94.6, 12.3, 8.5 and 54.6 g in group 1; 95.0, 11.2, 7.3 and 54.6 g in group 2 and 93.9, 11.9, 8.0 and 53.0 g in group 3, respectively. Average daily gain in body weight during 112 days was 761, 757 and 686 g in the corresponding group and differences among the groups were not significant. Mean intake of feed DM, CP, DCP and TDN/kg gain in body weight was 7020, 862, 597 and 4050 g in group 1; 7190, 797, 524 and 4120 g in group 2 and 7380, 902, 608 and 4400 g in group 3, respectively. A significant difference for DCP conversion was probably due to excess availability of DCP in group 1 and 3 in comparison to group 2.

Key words:

• Intact protein
• nutrient utilization
• growth response
• crossbred male calves