한국산 선발 계통, 일본산 양식 계통 그리고 이들 두 계통간 잡종 계통 참돔 치어의 사료 이용 효율

Title
한국산 선발 계통, 일본산 양식 계통 그리고 이들 두 계통간 잡종 계통 참돔 치어의 사료 이용 효율
Alternative Title
PART II: FEED UTILIZATION OF OFFSPRING FROM SELECTED KOREAN STRAIN, CULTURED JAPANESE STRAIN AND THEIR INTRASPECIFIC HYBRID STRAIN OF RED SEA BREAM, Pagrus major
Author(s)
오승용; 노충환; 홍경표; 김종만
KIOST Author(s)
Oh, Sung Yong(오승용)Noh, Choong Hwan(노충환)
Publication Year
2004-11-30
Abstract
Feeding and starvation experiments were conducted to investigate the differences of growth performance, total ammonia nitrogen (TAN) excretion rates and feces production rates among the offspring from selected Korean strain (KK, mean body weight (BW); 21.5±0.1 g), cultured Japanese strain (JJ, mean BW; 17.1±0.1 g) and their intraspecific hybrid (JK, mean BW; 17.1±0.1 g) of red sea bream in order to compare their feed utilization efficiency. Fish were hand-fed commercial diet containing 46.7% protein for 2 weeks, three times daily 09:00, 13:00 and 17:00 hrs. Feeding rate for the fish was 3% body weight per day. Feed conversion ratio and protein efficiency ratio of KK is superior to JJ and JK (P<0.05). After daily feeding, the TAN excretion rates reached peaks of 49.03, 58.75 and 36.26 mg/kg fish/hr for the JJ, JK and KK strain, respectively, during the daytime. The peak TAN excretion rate of the KK strain was significantly lower than that of the JJ and JK strain (P<0.05), but daily TAN excretion rates of the JJ, JK and KK strain were not different (P>0.05). When fish were fed at satiation after 4-day starvation, TAN excretion rates reached the maximum values 4 hours after feeding for the KK strain (31.23 mg/kg fish/hr) and 6 hours after feeding for the JJ (44.19 mg/kg fish/hr) and JK strain (41.70 mg/kg fish/hr). After 3-day fasting, the daily endogenous TAN excretion rates (ETE) for the JJ, JK and KK strain was 286.91, 215.66 and 179.29 mg/kg fish/day, respectively, the value of the KK strain was lower than that of the JJ and JK strain (P<0.05). The total feces production rates of the JJ, JK and KK strain were not different significantly, but the proportion of feces production rates with time series for the JJ, JK and KK strain were different (P<0.05) Overall results, selected strain had higher protein utilization efficiency than non-selected strain and the their intraspecific hybrid strain.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31609
Bibliographic Citation
7th Asian Fisheries Forum Abstras, pp.77, 2004
Publisher
Asian Fisheries Society
Type
Conference
Language
English
Publisher
Asian Fisheries Society
Related Researcher
Research Interests

Fish genetics and breeding,Living modified organism,Sbtropical mariculture,어류유전육종,어류형질전환,아열대어류양식

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