Potential of poultry by-product meal as a substitute for fishmeal in diets for Black Sea turbot Scophthalmus maeoticus: Growth and nutrient utilization in winter

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Turker A., Yigit M., Ergun S., Karaali B., Erteken A.

ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH, vol.57, no.1, pp.49-61, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 1
  • Publication Date: 2005
  • Journal Name: ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.49-61
  • Keywords: Black Sea turbot, feed utilization, growth performance, poultry by-product meal, white fishmeal, winter growth, PACIFIC WHITE SHRIMP, LESS-POLLUTING DIETS, RAINBOW-TROUT, PRACTICAL DIETS, ONCORHYNCHUS-MYKISS, PROTEIN-SOURCE, BONE MEAL, JUVENILE, REPLACEMENT, METABOLISM
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

The use of poultry by-product meal as an alternate dietary protein for Black Sea turbot

Scophthalmus maeoticus (initial avg wt 18 g) in winter was evaluated. Triplicate groups of 15 fish

were fed one of five isoenergetic (gross energy 20.5±0.21 kJ/g) and isonitrogenous (protein content

55±0.35%) diets with 25%, 50%, 75%, or 100% of the fishmeal protein replaced by poultry

by-product protein. White fishmeal was the sole protein source in the control diet. There was no

significant (p<0.05) reduction in growth performance of the turbot fed the 25% replacement diet

compared to the control diet (100% fishmeal). At the replacement levels of 50%, 75%, and

100%, however, there was a severe decrease in feed intake, growth performance, feed utilization,

protein efficiency ratio, and apparent net protein utilization. Results indicate that up to 25%

of the fishmeal protein can be replaced by poultry by-product meal with no negative effects in

fish performance at temperatures ranging 6-8°C.

The use of poultry by-product meal as an alternate dietary protein for Black Sea turbot Scophthalmus maeoticus (initial avg wt 18 g) in winter was evaluated. Triplicate groups of 15 fish were fed one of five isoenergetic (gross energy 20.5 +/- 0.21 kJ/g) and isonitrogenous (protein content 55 +/- 0.35%) diets with 25%, 50%, 75%, or 100% of the fishmeal protein replaced by poultry by-product protein. White fishmeal was the sole protein source in the control diet. There was no significant (p < 0.05) reduction in growth performance of the turbot fed the 25% replacement diet compared to the control diet (100% fishmeal). At the replacement levels of 50%, 75%, and 100%, however, there was a severe decrease in feed intake, growth performance, feed utilization, protein efficiency ratio, and apparent net protein utilization. Results indicate that up to 25% of the fishmeal protein can be replaced by poultry by-product meal with no negative effects in fish performance at temperatures ranging 6-8 degrees C.