Production of a low cost fish diet by using poultry by products residues [electronic resource].

By: Contributor(s): Language: English Summary language: Arabic Description: p.1279-1288Other title:
  • إنتاج علف للأسماك قليل التكلفة باستخدام مخلفات مجازر الدواجن [Added title page title]
Uniform titles:
  • Zagazig journal of agricultural research, 2016 v. 43 (4) [electronic resource].
Subject(s): Online resources: In: Zagazig Journal of Agricultural Research 2016.v.43(4)Summary: This study aimed to produce a low cost fish diet through using levels of poultry by-products meal in diets of Nile tilapia (Oreochromis niloticus). The experiments were carried out through 90 days and included five treatments of 0, 25, 50, 75 and 100% poultry by-products. The highest weight gain WG (59.84 g) was recorded for fish fed on the control diet followed by those fed on the diet 25% (53.37 g), 50% (52.98 g), 75% (48.46g) and 100% (46.22 g) replacement, respectively. The differences in weight gain among the different fry groups were significant (P<0.05) and the same trend was observed for specific growth rate SGR. The average feed intake, feed conversion ratio and protein efficiency ratio of Nile tilapia were significantly (P<0.05) affected by the incorporation of poultry by-products meal as a substitute of fish meal. The results of this study showed that moisture in whole fish body ranged between 77.40 and 80.55% with insignificant differences. Crude protein ranged between 61.70 and 64.44%, ether extract ranged between 15.50 to 17.73% and ash from 17.84 to 22.43% with significant differences for ether extract and protein content of whole fish bodies. Feed cost decreased as inclusion levels of poultry by-products meal increased. Costs were (6020, 5330, 4640 and 3950 LE/Mg) at fish fed on diets contain (25, 50, 75 and 100% of poultry by-products meal respectively) compared with those fed on the control diet (6660 LE/Mg). In conclusion, replacing up to 50% offish meal by poultry by-products meal did not affect growth performance and feed utilization for tilapia. The higher replacing levels (75 or 100%) significantly adverse growth and feed utilization parameters.
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This study aimed to produce a low cost fish diet through using levels of poultry by-products meal in diets of Nile tilapia (Oreochromis niloticus). The experiments were carried out through 90 days and included five treatments of 0, 25, 50, 75 and 100% poultry by-products. The highest weight gain WG (59.84 g) was recorded for fish fed on the control diet followed by those fed on the diet 25% (53.37 g), 50% (52.98 g), 75% (48.46g) and 100% (46.22 g) replacement, respectively. The differences in weight gain among the different fry groups were significant (P<0.05) and the same trend was observed for specific growth rate SGR. The average feed intake, feed conversion ratio and protein efficiency ratio of Nile tilapia were significantly (P<0.05) affected by the incorporation of poultry by-products meal as a substitute of fish meal. The results of this study showed that moisture in whole fish body ranged between 77.40 and 80.55% with insignificant differences. Crude protein ranged between 61.70 and 64.44%, ether extract ranged between 15.50 to 17.73% and ash from 17.84 to 22.43% with significant differences for ether extract and protein content of whole fish bodies. Feed cost decreased as inclusion levels of poultry by-products meal increased. Costs were (6020, 5330, 4640 and 3950 LE/Mg) at fish fed on diets contain (25, 50, 75 and 100% of poultry by-products meal respectively) compared with those fed on the control diet (6660 LE/Mg). In conclusion, replacing up to 50% offish meal by poultry by-products meal did not affect growth performance and feed utilization for tilapia. The higher replacing levels (75 or 100%) significantly adverse growth and feed utilization parameters.

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