Effect of Yeast Fermented Feed on Native Sheep of Bangladesh

Abstract

Experiment was done with yeast (S. cerevisiae) fermented roughage (Rice straw and Sugarcane bagasse) with yeast fermented concentrate (Wheat bran and Rice polish). 12 no. of growing sheep was used for feed trial divided into 3 treatment groups named T0, T1, and T2. Groups were supplied by 4.5, 4.0, and 3.0 kg feed respectively. Nutritional composition of feed were analyzed by the AOAC method (2011) and provided same amount of nutrition for each group. 1125g, 1000g, and 750g feed/animal/day were supplied in T0, T1, and T2 groups respectively. Control T0 was supplied (85% green grass and 15%concentrate mixture). The T1 group was supplied by (60% green grass, 20% fermented roughage, and 20% fermented concentrate mixture) and the T2 group was supplied by (60% fermented roughage and 40% fermented concentrate mixture). The result found that nutrient intake; feed digestibility and body growth was better in fermented feed-supplied groups in T1 and T2 than in the control group T0. DMI was 510.59 (g/d), 405.08 (g/d) respectively in T2 and T1 group whether 356.90 (g/d) in T0 group .CPI was 61.93, 48.61(g/d), and EEI was 18.84, 15.96 (g/d) in T2 and T1 groups respectively whereas CPI was 41.54 and EEI was 15.81 g/d in the T0 group respectively. TAI was 45.34 (g/d), 37.26 (g/d) and NFEI was 278.14 (g/d), 189.66 (g/d) in T2 and T1 groups where TAI was 32.83 and NFEI was 156.64 g/d in T0 group. OMI was 465.25 and 367.81 g/d in T2 and T1 group respectively, whereas, 324.06 g/d in T0 group. Growth performance was best in the T2 group. Total body weight gain (kg) during the trial period was 7.92 and 7.4 kg in T2 and T1 groups respectively and 5.3 kg in the T0 group. Daily weight gain was 66.0 and 62.20 g/d T2 and T1 groups and 44.16 g/d in the T0 group. However, Due to more DM intake in the T2 group, the FCR of feed was best in the T1 group which was 6.81 (kg feed/kg gains) while in T0 and T2 group the FCR was 8.39 and 7.85 (kg feed/kg gains). Result also showed that DMI (g/ kgW0.75), and CPI (g/kgW0.75) was better in T2 group these were 72.82, and 8.80 (g/ kgW0.75) respectively and 57.45, and 6.89 (g/kgW0.75) respectively in T1 group whether, 55.07, and 6.41 (g/kgW0.75) respectively in T0 group. Digestibility was better in fermented feed supplied group T1 and T2 than in control group T0. DM, CP, and CF digestibility was 72.48%, 80.72%, and 77.71% in T1 group respectively and 72.38%, 81.50%, and 72.24% in T2 group respectively where 62.25%, 71.04%, and 71.16% in T0 group respectively. EE and OM digestibility was 82.74%, and 73.95% respectively in the T1 group and 79.50%, and 74.15% respectively in the T2 group while 74.74% and 64.70% in the T0 group respectively. Results also showed that the fermentation of feed was cost-effective. In conclusion, Yeast fermented feed improve the growth rate of sheep by increasing the nutrient intake and digestibility.