EFFECT OF VARYING DIETARY-PROTEIN LEVEL IN DIFFERENT FAMILIES OF RAINBOW-TROUT

被引:69
作者
AUSTRENG, E [1 ]
REFSTIE, T [1 ]
机构
[1] AGR UNIV NORWAY,DEPT ANIM GENET & BREEDING,N-1432 AS NLH,NORWAY
关键词
D O I
10.1016/0044-8486(79)90027-9
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Groups of rainbow trout (Salmo gairdneri) fingerlings from five different families and five inbred groups were fed for 153 days on each of four diets similar in energy content, but differing in their percentage of protein. The protein contents were 24, 33, 42 and 51%, respectively. Significant differences between fish families were found for growth, condition factor, chemical composition of the carcass, and digestibility of protein. At the end of the experiment, interaction between diet fed and family was found close to significance for weight and relative growth rate, and significant for length and condition factor. This interaction indicates that prospects for selectively breeding strains of rainbow trout specifically better able to utilize protein are promising. Fish growth rate increased with increasing dietary protein content. The corresponding condition factor, content of dry matter and energy in the carcass decreased. The high protein diets gave more protein in the carcass and a more discoloured liver than the low protein diets. Apparent protein digestibility increased with increasing protein level. © 1979.
引用
收藏
页码:145 / 156
页数:12
相关论文
共 32 条
[1]  
[Anonymous], 1975, OFFICIAL METHODS ANA
[2]   GENETIC AND ENVIRONMENTAL SOURCES OF VARIATION IN LENGTH AND WEIGHT OF RAINBOW-TROUT (SALMO-GAIRDNERI) [J].
AULSTAD, D ;
SKJERVOLD, H ;
GJEDREM, T .
JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1972, 29 (03) :237-+
[3]  
AULSTAD D, 1975, PROG FISH CULT, V37, P113, DOI 10.1577/1548-8659(1975)37[113:TEOWDI]2.0.CO
[4]  
2
[5]   DIGESTIBILITY DETERMINATION IN FISH USING CHROMIC OXIDE MARKING AND ANALYSIS OF CONTENTS FROM DIFFERENT SEGMENTS OF GASTROINTESTINAL-TRACT [J].
AUSTRENG, E .
AQUACULTURE, 1978, 13 (03) :265-272
[6]  
AUSTRENG E, 1978, MELD NOR LANDBRUKSHO, V57
[7]  
AUSTRENG E, 1977, MELD NOR LANDBRUKSHO, V56
[8]   INFLUENCE OF LEVEL AND TYPE OF DIETARY-PROTEIN, AND OF LEVEL OF FEEDING ON FEED-UTILIZATION BY RAINBOW-TROUT [J].
CHO, CY ;
SLINGER, SJ ;
BAYLEY, HS .
JOURNAL OF NUTRITION, 1976, 106 (11) :1547-1556
[9]  
COMBS BD, 1962, 432 US FISH WILDL SE
[10]   NUTRITION OF SALMONOID FISHES .6. PROTEIN REQUIREMENTS OF CHINOOK SALMON AT 2 WATER TEMPERATURES [J].
DELONG, DC ;
HALVER, JE ;
MERTZ, ET .
JOURNAL OF NUTRITION, 1958, 65 (04) :589-599