Aim:The aim was to investigate the effects of dietary supplementations of prebiotic, probiotic, and synbiotic on growth performance and carcass characteristics of broiler chickens.Materials and Methods:A total of 360 1-day-old Vencobb broiler chickens of either sex were randomly assigned to four dietary treatments each consisting of three replicates and each replicate having 30 birds for 6 weeks. The dietary treatments were (1) control group with basal diet, (2) basal diet supplemented with prebiotic (at 400 g/tonne of starter as well as finisher ration), (3) basal diet supplemented with probiotic (at 100 g/tonne of starter ration and 50 g/tonne of finisher ration), and (4) basal diet supplemented with synbiotic(at 500 g/tonne of starter as well as finisher ration). The birds were provided with ad-libitum feed and drinking water during the entire experimental period.Results:The highest body weight observed in asynbiotic group, which was non-significantly (p>0.05) higher than thecontrol group. Prebiotic and probiotic groups showed lower body weight than synbiotic and control groups. A total feed intake did not show any significant (p>0.05) difference between experimental groups. There were no significant (p>0.05) differences in feed conversion ratio of broiler chickens in prebiotic, probiotic, and synbiotic groups as compared with control group. There was no significant (p>0.05) difference in the carcass traits with respect to dressing percentage, carcass percentage, heart weight, liver weight and gizzard weight, wing percentage, breast percentage, back percentage, thigh percentage, and drumstick percentage in Cobb broilers under study.Conclusion:The growth performance and percentage of carcass yield did not show any significant increase by the dietary inclusion of prebiotic, probiotic, and synbiotic compared with unsupplemented control in a commercial broiler chicken.

Aim:The aim was to determine the chemical composition of solar dried blood and rumen content (DBRC) and further ascertain the concentration at which DBRC could be included in Japanese quail diets without any adverse effect on its performance.Materials and Methods:Feeding trial on the effect of DBRC on performance of Japanese quails was studied up to 5 weeks. 252 numbers of day old (Nandanam Type III breed) Japanese quails were purchased from Poultry Research Station, Madhavaram and divided into 7 batches (control+ six treatments) each consisting of 36 birds. The DBRC was included at 0%, 5%, 10%, 15%, 20%, 25% and 30% in diets as control, treatment-1 (T1), treatment-2 (T2), treatment-3 (T3), treatment-4 (T4), treatment-5 (T5) and treatment-6 (T6) respectively in a completely randomized design to replace soybean meal in Japanese quail feed. The birds were provided with ad-labidum feed and drinking water ad-libitum during the entire experimental period.Results:The crude protein (CP), crude fiber (CF), ether extract (EE) and ash contents of DBRC were 35.87%, 17.40%, 3.6% and 12.6%, respectively. The amount of essential amino acids and non-essential amino acid content were found to be 12.98 and 4.87 (g/100 g of feed) respectively in DBRC feed. Result showed that all birds fed DBRC diets performed better than the control group. Mortality was unaffected by dietary treatments. There was a significant difference (p<0.01) observed in weight gain in treatment groups compared to the control.Conclusion:Up to 30% DBRC could be incorporated in the diets of Japanese quails without any adverse effects on its performance.

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The study was carried out with an objective to assess the technology of enhancement of fish production by incorporating Minor Carp Sps. in Composite fish culture system. The experiment was conducted for ten months from June, 2018 to March, 2019 in nine earthen ponds of 0.3 ha (3 no. ponds), 0.4 ha (3 no. ponds) & 0.5 ha (3 no. ponds) of three different villages of Angul district. In the first phase Pre-stocking pond preparation methods are followed i.e. removal of predatory and weed fishes by bleaching powder (10 mg/l chlorine) and then basal fertilization (3 tonn cow dung and 30 kg single super phosphate / ha) were carried out before stocking of fingerlings (Jena et al., 2005). Three different species combinations were taken i.e. Control (T1) (Catla : Rohu :Mrigal) at the ratio of 40:30:30 @ 10000 no. /ha and culture for 10 months. In Recommended practice incorporation of Puntius sarana @ 10 % or 1000 no./ha in the Major Carp system i.e. (Catla :Rohu :Mrigal: Puntius) at the ratio of 40:30:30:10 @ 10000 no. / ha and culture for 6 months (T2). Incorporation of Puntius sarana @ 20 % or 2000 no./ha in the Major Carp system i.e. (Catla :Rohu :Mrigal) at the ratio of 40:30:30:20 @ 10000 no. / ha and culture for 6 months (T3). In farmers practice they usually stocked mixed seeds (35-40) mm size of Indian Major Carps and not adopting the scientific Pisciculture practices. In recommended practice the farmers were provided with Complete technical support of raising of the minor Carp Species i.e. Puntius sarana through proper post stocking management measures to utilize the total food space available in the pond environment. Health management aspects were assessed by periodic sampling. Fish yield was recorded after harvesting. About 2.5-3 meter water depth was maintained throughout the study period. Water samples were collected from the ponds at 15-day intervals between 07:00 and 08:00 h and analyzed for important parameters were measured following standard methods (APHA, 2014). Then the data like fish weight (gm), fish yield (Quintal/hectar), Survivability percentage, average net return and B: C was recorded and analysed using statistical tools like Average mean value and percentage. From the results of the analysis it is found out that mean weight gain of Puntius sarana / Olive barb were higher in T3 compared to T1 and T2. Daily weight gain and net fish yield in T2 and T3 were also higher than T1. In the present study stocking of Puntius sarana & IMC fingerlings of recommended size and density along with adopting the post stocking management schedules resulting the increase in Avg. weight of Olive barb upto 315 gm where as the weight of IMC remains 420 gm during harvesting . Net profit of Rs. 1,67,363 was obtained from this technology with benefit: cost (B: C) ratio of 2.75 against Rs. 76,197 and 1.83 respectively from Control (T1) due to more fish growth & production. Similarly 56.55 % increase in fish yield was also observed in this technology (26.3 q/ha) against Control (16.8 q/ha).

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