Impacts of Feeding Restriction Regimes on Economic and Productive Performance of Nile Tilapia Fish | ||
| Journal of Current Veterinary Research | ||
| Article 6, Volume 2, Issue 2, October 2020, Pages 48-54 PDF (234.01 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jcvr.2020.121514 | ||
| Author | ||
| Ibrahim Mostafa Elkafrawy* | ||
| dept. of psychological sciences, university of sadat city | ||
| Abstract | ||
| This study investigated the effect of feeding restriction regimes on economic and productive performance of Nile tilapia Oreochromis niloticus. Sixty Nile tilapia fish were randomly classified into three groups (n=10/group) with similar initial body weight. Group I (Control group) was fed three times daily for 32 days. Group II was deprived for 4 days and then re-fed for 16 days, while Group III was deprived for 8 days and then re-fed for 32 days. The experiment was terminated after 10 weeks. All groups were fed on commercial diet at 2% of body mass. Indicate parameters measured were weight gain, feed efficiency, feed conversion ratio, economic conversion ratio and water quality. The above parameters were measured every 2 weeks. The results revealed that, after 64 days, Fishes which exposed to long starvation periods (8F:32R) consumed significantly (P= .01) more feed compared to other the restricted group (4F:16R). The highest feed efficiency was observed in fish exposed to 4F:16R. However, this group showed less feed intake than the 8F:32R and control groups. Moreover, cost benefit analysis under restriction indicated that, the highest return observed in control group and restricted fish for 4 days and the lowest in restricted fish for 8 days (P= .05). On the other hand, parameters of water quality (pH, Dissolved oxygen, Turbidity and Ammonia) were significantly (P= .01) affected by feed restriction regimes. Turbidity and ammonia levels were more in control group than the restricted groups. | ||
| Keywords | ||
| Cost-benefit analysis; Economic and productive performance; Nile tilapia fish | ||
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