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20221
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Subject: Poultry Science × Author: AVINASH NILUGONDA × End date: 2023 × Start date: 2020 ×
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    ThesisItemOpen Access
    EVALUATION OF PRODUCTION PERFORMANCE OF GRAMASREE HENS BY FEEDING BLACK SOLDIER FLY (Hermetia illucens) LARVAE AS A PROTEIN REPLACER
    (COLLEGE OF VETERINARY AND ANIMAL SCIENCES MANNUTHY, THRISSUR, KERALA VETERINARY AND ANIMAL SCIENCES UNIVERSITY, 2022-03-08) AVINASH NILUGONDA; Dr. S. Sankaralingam
    An experiment was conducted in the Department of Poultry Science, College of Veterinary and Animal Sciences, Mannuthy to evaluate production performance of Gramasree hens by feeding black soldier fly (Hermetia illucens) larvae as protein replacer. A total of 80 numbers of forty weeks old Gramasree pullets were distributed into five treatments each with four replicates in completely randomized design and experiment was carried for eight weeks from 41 to 48 weeks of age with standard management practices. The control group (T1) was fed with 100 per cent standard layer diet as per the BIS 2007 and other treatments groups were fed with fresh BSFL at 25 (T2), 50 (T3), 75 (T4) and 100(T5) per cent levels on dry matter basis as Soybean meal replacer after analysing chemical composition of BSFL. The remaining feed was provided separately as balancer diet. During experimental period, daily egg production, fortnightly feed consumption, fortnightly feed conversion ratio, egg weight, egg quality traits at 28 and 56 weeks of age, initial and pre-slaughter body weight, body weight gain,carcass characteristics, serum biochemical parameters, digestibility parameters and techno-economics were studied.Overall results of present study showed no significant difference in hen￾housed egg production per bird and percentage. Feed consumption was significantly (p<0.05) higher in control and reducing as BSFL inclusion level increased in the diet. There was no significant difference in FCR among the treatment groups. Egg quality parameters like egg weight, shape index, shell thickness, albumen index, yolk index and Haugh unit were showing no significant difference at 44 and 48 weeks of age. Carcass parameters studied at 48 weeks of age showed no significant difference in mean pre-slaughter weight, dressing percentage and eviscerated percentage of birds among all treatments, The abdominal fat percentage was significantly (p<0.05) lower in BSFL fed T2, T3, T4 and T5 treatment groups compared to control. The mean breast yield was significantly (p<0.05) higher in T1 followed by T2 and T3 and the same was lower in T4 and T5. Mean thigh yield was significantly (p<0.05) higher in T3 compared to T1 and T5 and the values for T2 and T4 were intermediate. Drumstick yield was significantly (p<0.05) higher in T1 followed by T2 group, followed by T5 and T4 and the same was lowest in T3. The mean wing yield was significantly (p<0.05) higher in T1 compared to T3 and T5 and the value was in between in T2 and T4. The heart, liver and yield had no significant difference among the dietary treatment groups. The blood serum biochemical parameters like total protein, albumin, globulin, albumin/globulin ratio, cholesterol, triglycerides and calcium were having no significant difference among dietary treatment groups in Gramasree hens at 48 weeks of age. The digestibility co-efficient of dry matter, crude protein, crude fibre, total ash, NFE, calcium and phosphorus had no significant difference among the treatment groups. The mean ether extract digestibility co-efficient was significantly (p<0.05) higher in T5, T4, T3 compared to T1 and the value of T2 was intermediate. The feed cost and expenditure per bird was significantly (p<0.05) lower in T5 followed by T4, T3 and T2. The same was significantly (p<0.05) higher in control. Total income per bird showed no significant difference among the treatments as there was no significant difference in egg production. The mean profit per bird was significantly (p<0.05) higher in T5 followed by T4 and T3 and the same was lowest in T1 and also the value of T2 was intermediate to T3 and T1. The mean profit per egg was significantly (p<0.05) higher in T5 followed by T4 and T3 and lower in T2 and T1. Based on the overall performance, it is concluded that the Gramasree hens can be fed with BSFL up to 100 per cent replacement to soya bean meal withoutaffecting egg production and also with reduction in feed consumption and better FCR. Feeding BSFL reduces the feed cost and increases the net profit per bird. So, BSFL is the best alternative source protein for backyard poultry rearing.