Comparative Efficacy of Anthelmintic and Condensed Tannins on Intake, Nutrient Metabolism and Growth Performance of Naturally Infected Lambs
2014
Kumar, Sunil | Dutta, Narayan | Pattanaik, A.K. | Banerjee, P.S. | Narang, A.
This study examined the comparative efficacy of anthelmintic and condensed tannins (CT) on growth and nutrient utilization in lambs. Muzaffarnagari lambs (n=18) with natural GI infection were randomly divided into three equal groups: CON (Control), DW (Dewormed) and CT (Condensed-tannin treated) in a completely randomized block design. In DW group, lambs were treated with broad-spectrum anthelmintic at the onset of experiment. The lambs in CON and DW groups were given a standard total mixed ration (TMR); whereas, the CT group, the lambs were fed a CT-based TMR having 1.5% CT through Ficus infectoria leaves. The feeding-cum-growth trial lasted for a period of 120d. A metabolism trial of 6d duration was conducted after 90d of experimental feeding. Feeding of CT diet (P<0.05) increased the total DM intake by lambs as compared to DW and Control groups. The digestibility coefficient of DM, OM, CP, EE, NDF and ADF did not differ (P>0.05) among the groups. Total-N intake by lambs was higher (P<0.05) in CT group as compared to control. Feeding of CT based TMR reduced (P<0.02) urinary-N excretion as compared to DW and CON groups. Similarly, N-retention was higher (P<0.02) in CT group followed by DW and CON groups. Daily intake of DCP and TDN was higher (P<0.07) in CT group as compared to CON group. The net BW gain and ADG were higher (P<0.01) in CT group followed by DW and CON groups. Feed conversion ratio was better (P<0.07) in CT group as compared to CON. Overall, it is concluded that feeding of CT based TMR significantly improved feed intake, nitrogen retention and growth performance of lambs with natural GI infections.
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