| مستخلص: |
Eighteen, day-old Jersey calves divided into three groups viz. T1,T2 and T3 which were fed on milk and milk replacer up to three months of age. Group T1 was standard (control), however group T2 and T3 were supplemented with L. acidophillus (leopard excreta) and L. plantarum (carrot) @ 6.8 x 108 cells/litre of milk, respectively. The retained calcium (g/head/day) significantly (P<0.05) higher in T2 (14.39 ± 0.43) and T3 (14.28 ± 0.46) as compared to control (T1, 13.00 ± 0.48). The retained calcium (% basis) was 66.60 ± 1.78, 72.98 ± 1.40 and 72.58 ± 1.34 in T1, T2 and T3 treatments, respectively. The retained phosphorus (g/head/day) was non-significant under different groups (5.98 ± 0.33, 7.25 ± 0.41 and 6.76 ± 0.43) in T1, T2 and T3 treatments, respectively. The retained phosphorus (% basis) was 56.07 ± 1.86, 64.79 ± 2.05 and 61.97 ± 2.73 in T1, T2 and T3 treatments, respectively. The retention of nitrogen (g/head/day) was 20.48 ± 1.02, 23.04 ± 0.32 and 23.81 ± 0.68 in T1, T2 and T3 treatments, respectively. It was significantly (P<0.05) higher in T3 and T2 as compared to T1. The differences in T2 and T3 treatments were non-significant. As far as economic is concerned of three months old calves under different treatments, the feed cost per kg of body weight gain was 129.63 ± 1.28, 87.17 ± 1.49 and 93.97 ± 1.33 in T1, T2 and T3 treatments, respectively. While comparing with standard (control T1), treatment T2 and T3 had 32.18 and 27.50 per cent lower cost of feed per kg gain in body weight, respectively. Result revealed that supplementation of probiotics significantly influence the balance of nutrients viz. calcium, phosphorus, nitrogen and also reduce the feed cost in per kg body weight gain of three months old Jersey calves. [ABSTRACT FROM AUTHOR] |
