EFFECT OF ORANGE PEEL WASTE ON GROWTH PERFORMANCE AND FEED UTILIZATION OF RED TILAPIA (Oreochromis Mossambicus X O. niloticus) FINGERLINGS

EFFECT OF ORANGE PEEL WASTE ON GROWTH PERFORMANCE AND FEED UTILIZATION OF RED TILAPIA (Oreochromis Mossambicus
X O. niloticus) FINGERLINGS

Abo El-Ward, A.¹; A.M. Eid A.E²; Badia. A.A.²; Elsayed. K. A²;

Hayam.D. Tonsy¹; Ragaa A. Ahmed³ and Fathy M. Abd-Elghany⁴.

¹Animal production Research Institute- by-product Research department. Dokki Giza Egypt.

²Department of Animal and Fish resources , Faculty of Agriculture- Suez Canal University- Ismailia- Egypt.

³Department of Aquaculture Faculty of Fish & Fisheries Technology, Aswan University.

⁴Department of Animal Production, Fish Production, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt.

Abstract

This study investigated the effects of Digestrom supplementation with rate 200mg/kg diet in all treatments as a growth promoter beside addition three levels of orange peel waste 0.0%, 50% and 75% as food replacement of yellow corn for estimation growth performance, feed utilization and some blood constituents of Red tilapia (Oreochromis mossambicus
X O. niloticus) fingerlings. Fish fed with the diet containing 50% orange peel gave the best results concerning the weights parameters and nutritional status. It is noticed that increasing the protein in the diet to 30% and substituting 50% of the corn with orange peel increased dry matter, ash and reduced fat content in the body. The replacement of 50% of the corn with orange peel (in fish fed on a diet containing a 25% protein) did not affect the dry matter, but increases the level of protein and fat in the body.

Increasing orange peel to 75% led to significant increases in red blood cells, urea and triglycerides and at the same time reduced the levels of all the hormones studied. It is worth to mention that the applications led to a reduce the cost /kg diet, feed cost per kg fresh fish, relative % of feed cost/ g fish, consumed feed to produce 1 kg fish gain, feed cost /1kg gain, and relative % of feed cost of kg gain.

It could be concluded that replacing 50% of yellow corn in the diet with orange peel waste in terms of growth performance, feed utilization, body chemical composition, blood sample, hematology and economic evaluation.

Keywords: red tilapia, feed utilization, growth performance, orange peel waste, blood sample.