Effect of dietary Ulva and Spirulina an weight loss and body composition of rainbow trout Oncorhynchus mykiss Walbaum during a starvation period
     
Yazarlar (6)
Prof. Dr. Derya GÜROY Yalova Üniversitesi, Türkiye
B. Güroy Yalova Üniversitesi, Türkiye
D. L. Merrifield University Of Plymouth, İngiltere
S. Ergün Çanakkale Onsekiz Mart Üniversitesi, Türkiye
A. A. Tekinay Çanakkale Onsekiz Mart Üniversitesi, Türkiye
M. Yiǧit Çanakkale Onsekiz Mart Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of Animal Physiology and Animal Nutrition (Q1)
Dergi ISSN 0931-2439 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 06-2011
Cilt / Sayı / Sayfa 95 / 3 / 320–327 DOI 10.1111/j.1439-0396.2010.01057.x
Makale Linki https://avesis.comu.edu.tr/publication/details/dfa04537-9355-4318-b34e-ce16187c63c5/oai
Özet
A study was conducted to determine the effect of dietary algal supplementation on weight loss and proximate composition in rainbow trout, Oncorhynchus mykiss, during starvation. An algae-free control diet (C) and four experimental diets, including varying levels of raw Ulva meal (5%=U5; 10%=U10) and Spirulina meal (5%=S5; 10%=S10) were formulated. Fish were fed to satiation for 12weeks and then subjected to a 3-week starvation period. Body weight, viscerosomatic index (VSI, %), hepatosomatic index (HSI, %), dress-out (DO, %) and chemical composition of carcass were analysed at the end of each starvation week. The accumulated weight loss of the fish fed dietary algae was almost 50% less than the control group (p<0.05) after 2 and 3weeks starvation. No significant differences in weight loss were observed among the fish fed different algal diets during the starvation period. Total body protein and ash contents remained constant in all groups throughout the starvation period. Fish in all treatments lost a significant level of total lipids and changes of liver fatty acid profiles were also observed. Results indicate that low level inclusion of algae in aquafeeds may have economical advantages in terms of reducing weight loss in fish when subjected to a short-term fasting period, that sometimes is necessary after a heavy rainfall or when fish stocks are held back to meet market demand. © 2010 Blackwell Verlag GmbH.
Anahtar Kelimeler
Algae meal | Fasting | Fatty acids | Rainbow trout | Weight loss