Effect of feeding differently processed paddy straw based complete diets on feed intake and nutrient utilization in nellore rams.
2011
Datt, Chander | Reddy, G.V.N. | Kundu, S.S.
The effect of processing methods on feed intake and nutrient utilization was studied in twenty adult (1824 months) Nellore rams, divided into 4 groups of 5 each. The animals in control group (T1) were given chaffed (34 cm) paddy straw and concentrate mixture separately; while those in group 2 (T2), complete rations in mash form; in group 3 (T3), the same diet as in T2 but also supplemented with dried yeast culture (Saccharomyces cereviseae; NCL 3190) at 0.1; level and in group 4 (T4), the mash form (T2) was subjected to expander-extruder processing. Rumen liquor profile indicated significantly (P0.01) higher concentration of total N, TCA precipitable N, NH3-N and TVFA in groups T2, T3 and T 4 than in control group (T1) but differences among T2, T3 and T 4 were not significant. Blending of paddy straw into complete diets significantly increased DM intake, digestibility of protein, N balance as well as DCP and TDN intakes compared to control diet, however, supplementation of S. cereviseae or expansion-extrusion processing of mash did not result in further improvement in feed intake and nutrient utilization as compared to mash diet per se.
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