EFFECT OF PROBIOTICS IN CORN REPLACED RICE BASED DIET IN BROILER CHICKEN
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Date
2023-03-23
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COLLEGE OF VETERINARY AND ANIMAL SCIENCES MANNUTHY, THRISSUR, KERALA VETERINARY AND ANIMAL SCIENCES UNIVERSITY
Abstract
An experiment was conducted in the Department of Poultry Science, College of Veterinary and Animal Sciences, Mannuthy to find out the effect of probiotics in corn replaced rice based diet in broiler chicken for a period of 42 days. A total of 144, day-old Ven Cobb broiler chicks were allotted randomly to six dietary treatment groups with three replicates of eight birds each. The treatment groups were T1-standard broiler ration (SBR1), T2- SBR1 with 0.05 per cent probiotic mixture, T3- SBR1 with 0.1 per cent probiotic mixture, T4- 50 per cent of maize from SBR1 replaced by rice (SBR2), T5- SBR2 with 0.05 per cent probiotic mixture, T6- SBR2 with 0.1 per cent probiotic mixture. The body weight, body weight gain, feed consumption and carcass characteristics were not affected by the inclusion of rice and probiotics in broiler pre-starter and starter diets. The feed efficiency was best in broilers fed rice without probiotic supplementation. Whereas, the probiotic supplementation in rice based diet resulted in poorer FCR. The dietary inclusion of rice did not affect the E. coli, coliform count and ileal pH. Whereas, the E. faecalis count was higher in rice fed group than corn fed group. The probiotics supplementation at 0.1 per cent level significantly (p<0.01) reduced the E. coli, coliform, E. faecalis count and ileal pH both in rice and corn based diets. The dietary inclusion of rice in broilers improved the ileal villi height and VH:CD ratio. The supplementation of probiotics in both rice and corn based diets significantly (p<0.01) increased the villi height of duodenum, jejunum and ileum and VH:CD ratio in jejunum and ileum. The dietary inclusion of rice did not affect the serum total cholesterol, triglycerides, HDL, LDL and VLDL value in broilers. Whereas, the supplementation of probiotics significantly (p<0.01) reduced the total cholesterol, triglycerides and VLDL in both rice and corn based diets. The serum triglyceride and VLDL level was significantly (p<0.01) lower in birds fed on rice diet with probiotics than birds fed corn based diet with probiotics. The dry matter, crude protein and ether extract digestibility of groups fed
on rice based diet was better compared to groups fed on corn diet. The protein digestibility was significantly improved by probiotic supplementation at 0.1 per cent level in corn diet. There was no such effect of probiotics in rice fed groups.
The crude protein and ether extract digestibility in rice with 0.05 per cent probiotics group was better than corn with 0.05 per cent probiotics fed group. The crude fibre digestibility was not affected by inclusion of rice or probiotics in
broiler diet. The cost of feed per kg body weight was lowest in group fed rice without probiotic supplementation. The supplementation of probiotics in corn based diet resulted in lower feed cost per kg body weight. No such effect of probiotics was observed in rice based diet. In conclusion, replacement of 50 per cent of corn by rice from the diet and supplementation of diet with probiotics at 0.05 per cent level can be recommended during pre-starter and starter phase of broilers.