TY  - JOUR
TI  - Effects of feed rations containing egg powder in different proportions on growth performance, feed utilization, body composition and survival rate of rainbow trout (Oncorhynchus mykiss Walbaum, 1792) fry
AB  - This study aims to determine the appropriate egg powder ratio that can be substituted into the fish meal to close the protein deficit withoutadversely affecting the development performance of rainbow trout fry (Oncorhynchus mykiss) (0.38±0.01 g and 3.55±0.05 cm). Also, the effects of eggpowder used as a protein source on rainbow trout feed on growth performance, feed utilization, body composition, and survival rates were investigated. Theegg powder ratio in the ration of the groups were arranged to be 0% (Control), 25% (E-25), 50% (E-50), 75% (E-75), and 100% (E-100) of the amount ofprotein obtained from fish meal. To evaluate their growth performance, fish were fed for 90 days between March and May, and additional feeding was givenfor 17 days for the challenge test. As a result of the study, when the more than 25% egg powder was added to the ration, the final body weight (FBW),weight gain (WG), weight gain rate (WGR), specific growth rate (SGR), feed intake (FI), and protein efficiency ratio (PER) had a statistically significantdifference among the groups (p<0.05). It was determined that the difference between groups was insignificant in terms of condition factor (CF), and theaddition of more than 25% egg powder to the ration increased the feed conversion ratio (FCR) statistically and significantly (p<0.05). As a result of thechallenge test carried out with two different fish pathogens (Lactococcus garvieae and Yersinia ruckeri), it was determined that the addition of egg powderdecreased the survival rate in all groups compared to the control group (p <0.05). As a result, it was concluded that up to 25% of egg powder can be usedrainbow trout fry feeds, but continuous feeding with egg powder supplemented feeds may cause fish health problems.
AU  - ER, AKIF
AU  - KURTOGLU, ILKER ZEKI
AU  - Köse, Özay
AU  - Ariman Karabulut, Huriye
DO  - 10.12714/egejfas.38.1.08
PY  - 2021
JO  - Su Ürünleri Dergisi
VL  - 38
IS  - 1
SN  - 1300-1590
SP  - 69
EP  - 78
DB  - TRDizin
UR  - http://search/yayin/detay/443594
ER  -