Effect of replacing yellow corn by dried carrots or dried carrot tops on growth performance of growing Nile Tilapia (Oreochromis Niloticus)
Abstract: The present investigation was carried out to study the effect of replacing 25 and 50% of yellow com either by dried edible carrot roots, dried carrot tops or a mixture (1:1) of both as non-conventional energy sources on growth performance and feed utilization of Nile tilapia. The investigations included seven dietary treatments each in two replicates and performed in glass aquaria of 70L water each. Nile tilapia with an initial weight of 19 ± 2g were alloted into 7 treatment groups, where 15 fish were stocked in each aquarium. The experiment lasted 12 weeks and the experimental diets were fed at a rate of 3% of fish body weights in two portions daily. The dietary treatments included the control (C), dried carrot groups (CR1, CR2) to replace 25 or. 50% of yellow corn.
respectively the dried carrot tops ronts (CTl, CT2) to replace 25 or 50 % of yellow corn. respectively and - groups (CRT1 and CRT2) where 25 or 50% of yellow com were replaced by a mixture of dried edible carrot roots and dried carrot tops in a ratio of 1:1, respectively Results obtained are surnmarized in the following.
1- The group CT2 fed the diet containing 50% of dried carrot tops showed significantly higher values of final body weight, average weight gains, specific growth rate, relative. growth rate and average daily gains followed by the group CRT1 which was fed the mixture of dried carrot roots and dried carrots topS at 50% replacement level of yellow corn.
2- Feed conversion ratio, protein utilization efficiency and protein productive value improved significantly by incorporation of dried carrot tops in Nile tilapia diets (CD) to replace 50% of yellow corn followed by the group fed diets containing 50% carrot roots and carrot tops mixture.
3- The applied dietary treatments replaced significant effects on whole body dry matter, crude protein, ether extract, ash and gross energy contents.
Based on the obtained results, it could be recommended to incorporate dried carrot tops in growing Nile tilapia diets to replace yellow corn at 50% level as non conventional energy source.
Publication year 2006
Pages 455-469
Availability location معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
Availability number
Organization Name
serial title Egyptian Journal of Applied Science
Author(s) from ARC
External authors (outside ARC)
    نبيل فهمى عبد الحكيم جامعة الازهر
    الدسوقى السيد العزب جامعة الازهر
AGROVOC
TERMS		 Energy sources. Feed conversion efficiency. Maize. Performance testing. Tilapia.
Proposed Agrovoc dried edible carrot roots;dried carrot tops;
Publication Type Journal
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