Akademik Veri Yönetim Sistemi
Journal of advances in vetbio science and techniques, cilt.5, sa.3, ss.132-145, 2020 (TRDizin)
In the study, it was aimed to determine the effects of application of two different feed sources (carp feed and trout feed) with starvation and re-feeding cycles on the growth of Asian catfish (Pangasianodon hypophthalmus) on body composition and feed conversion ratio. For this purpose, 720 individuals between 13.87 ± 0.12 and 14.13 ±0.12 g were included in the trial in 6 groups with 3 replications. The experimental groups; fed only and continuously with commercial carp feed (SY), fed with commercial trout feed(AY), fed 1-day starvation and 6 days full with commercial carp feed (SY & 1A + 6T), 2-days starvation and 5 days fullfed with commercial carp feed (SY & 2A + 5T) The groups fed with commercial trout feed 1-day starvation and 6 days full (AY & 1A + 6T), 2-days starvation 5 days with commercial trout feed (AY & 2M + 5T). Each experimental group were fed to satiation 4 times a day for 77 days. At the end of the experiment, it was found that all the applications did not affect the survival rate of the groups. It was observed that the best growth in the trial was in the AY group (383.70 ±2.93 g), followed by the AY & 1A + 6T group with 355.56 ± 2.24 g. In terms of specific growth rate, the best value was achieved in the AY group. In terms of feed conversion ratio, SY & 1A + 6T and SY & 2A + 5T groups reached the highest values among the groups, while all other groups achieved similar FCR results. When evaluated in terms of economic analysis, it was seen that the lowest conversion rate SY group (4.37 ± 0.51) and the highest ECR value was obtained from AY & 2A + 5T group (5.24 ± 0.09). In terms of Economic Profit Index, the highest value was determined from the AY group (2.64 ± 0.01) and the lowest from the SY & 2A + 5T group (1.62 ± 0.01). When evaluated in terms of starvation and re-feeding cycles, it was observed that the groups could not make compensatory growth. As a result, it was determined that trout feed provided better performance in cages of Asian catfish under Çukurova conditions, andc ontinuous feeding gave better results in terms of starvation-refeeding cycle