Effect on In vitro protein degradability of decorticated cottonseed cake, cottonseed cake, soybean meal, groundnut cake and other ingredients of the concentrate mixture

To observe the effects of partial replacement of soybean (de-oiled) meal with cottonseed expeller or decorticated solvent extracted cottonseed cake digestibility of nutrients, nutritive evaluation of the feeds. 18 Karan fries female calves of similar age (8-9 months) and body weight (114-115 kg) were randomly divided into three groups of each and allotted diets ‘C’, ‘T-1’ or ‘T-2’. The diet ‘C’ having 15% soybean meal, which was replaced by 10 parts with cottonseed cake expeller in ‘T-1’ diet or 10 parts by decorticated cottonseed cake solvent extracted in ‘T-2’ diet. An in vitro rumen degradability study of different diets was undertaken to determine the rumen degradability of DM, OM and CP. The in vitro rumen dry matter degradability (IVDMDR) higher (P≤0.05) in ‘C’ (71.41±1.26) followed by ‘T-1’ (67.92±1.10) and ‘T-2’ (65.05±0.93) group. The IVOMDR (%) was significantly higher (P≤0.05) in ‘C’ (67.03±0.85) and lowest in ‘T-2’ (55.03±0.91) group. IVCPDR was significantly lower (P≤0.05) in ‘T-2’ (56.54±1.25) followed by ‘T-1’ (59.04±1.41) and ‘C’ (65.74±1.73).