The impact of restricted rationing upon growth, food conversion efficiency and body composition of rainbow trout

1995 ◽  
Vol 31 (10) ◽  
Keyword(s):  
Body Composition ◽  
Rainbow Trout ◽  
Conversion Efficiency ◽  
Food Conversion ◽  
The Impact ◽  
Food Conversion Efficiency

The impact of restricted rationing upon growth, food conversion efficiency and body composition of rainbow trout

1995 ◽  
Vol 31 (10) ◽  
pp. 219-223 ◽  
Author(s):  
M. Tomec ◽  
Z. Teskeredžic ◽  
E. Teskeredžic ◽  
M. Hacmanjek ◽  
E. McLean
Keyword(s):  
Body Composition ◽  
Rainbow Trout ◽  
Conversion Efficiency ◽  
Food Conversion ◽  
Lipid Levels ◽  
Feed Conversion ◽  
Body Lipid ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Feeding Regimes ◽  
The Impact

Juvenile rainbow trout, Oncorhynchus mykiss, maintained under commercial conditions, were subjected to four different feeding regimes. Duplicate groups of fish were fed to satiation 3 times/d for either 7, 3, 2 or 1 d/wk over a 10 wk period. At the end of the trial, evaluations were made of group growth performance, body composition, and feed conversion efficiency (FCE). At the end of the experiment, no differences were discerned between fish fed either daily or 3 times/wk with respect to growth, FCE or body composition. Animals placed upon the two lowest rations were significantly smaller (P<0.05) than those fed daily and exhibited decreased condition factors and body lipid levels (P<0.05) and increased moisture content (P<0.05). Food conversion was least efficient in those fish provided the largest ration.

Breed and sex differences among equally mature sheep and goats 6. Breed correlations for body composition and food conversion efficiency

1989 ◽  
Vol 49 (3) ◽  
pp. 423-434 ◽  
Author(s):  
C. S. Taylor ◽  
J. I. Murray ◽  
M. L. Thonney
Keyword(s):  
Body Composition ◽  
Conversion Efficiency ◽  
Dry Matter ◽  
Subcutaneous Fat ◽  
Food Conversion ◽  
Goat Breed ◽  
Lipid Concentration ◽  
Highly Correlated ◽  
Feral Goat ◽  
Food Conversion Efficiency

ABSTRACTBreed means are given for 40 traits relating to food conversion efficiency and body composition at the same stage of maturity in seven breeds of sheep and a feral goat breed. In terms of breed means, food intake and food conversion efficiency were genetically correlated, as were most traits associated with fatness or leanness.Highly inter-correlated measures of breed fatness were proportion of fat in the carcass, proportion of total carcass fat found in the rib plus loin, the fat : muscle ratio and the lipid concentration in the dry matter of all tissues except bone. Dressing proportion was highly correlated with all these measures of fatness.Breeds with a high proportion of subcutaneous fat did not necessarily have a low proportion of intra-abdominal fat. A low proportion of carcass fat in the rib plus loin was associated with a high proportion in the shoulder (inter-breed correlation —0·7): both were measures of leanness. Muscle : bone ratio was not correlated with fatness or leanness. Slower maturing, larger breeds had slightly more bone, less fat and more lean in their higher-priced cuts. Breeds with heavier fleeces were fatter (0·7). The food conversion efficiency of a breed was largely independent of its body composition.

The effect of Norbolethone, an anabolic steroid, on the performance and body composition of castrate pigs

1966 ◽  
Vol 8 (1) ◽  
pp. 65-73 ◽  
Author(s):  
D. W. Robinson ◽  
A. G. Singleton
Keyword(s):  
Growth Rate ◽  
Body Composition ◽  
Conversion Efficiency ◽  
Anabolic Steroid ◽  
High Protein ◽  
Food Conversion ◽  
Muscle Area ◽  
Eye Muscle ◽  
Significant Difference ◽  
Food Conversion Efficiency

1. An experiment was carried out with 24 individually fed castrated male, Large White pigs, to examine the effects upon growth and body composition of an anabolic steroid included in finishing diets of two protein levels.2. There was a significant interaction between steroid and dietary protein level on the growth rate and food conversion efficiency. On the low protein diet growth rate and efficiency were improved by steroid treatment while with high protein intake the steroid significantly depressed growth. Analysis of the main effects showed no significant differences between steroid and protein means for food conversion efficiency and no significant difference between protein means for growth. There was a significant difference (P<0·05) for rate of growth in favour of the animals not receiving the steroid.3. Steroid significantly improved the percentage of lean and the eye muscle area, but decreased the length of pigs. High protein feeding also improved the percentage of lean and the eye muscle area and also increased the length.4. The results are discussed in relation to the use of steroids in other species, optimum time of application and the problem of ascertaining accurate physiological doses.

Effects of chronic ammonia exposure on growth and food conversion efficiency in juvenile spotted wolffish

Aquaculture ◽  
2003 ◽  
Vol 228 (1-4) ◽  
pp. 215-224 ◽  
Author(s):  
Atle Foss ◽  
Tor H. Evensen ◽  
Tone Vollen ◽  
Victor Øiestad
Keyword(s):  
Conversion Efficiency ◽  
Food Conversion ◽  
Spotted Wolffish ◽  
Ammonia Exposure ◽  
Food Conversion Efficiency
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