KIFER, SMITH, and YOUNG: EFFECT OF DIETARY FlSil OIL 



Table 2. — Gas chromatographic analysis of methyl esters of the fatty acid components of the menhaden oil and 



of the diets fed to pigs. 



"14:0" meons that the fatly acid has 14 carbon atoms per molecule ond no unsoluroted bond. 



"16:1 oj7" means thot in the folly acid Ihe unsaturated bond occurs at Ihe seventh bond from the terminal methyl group. 



"Ir" means trace. 



Seven Yorkshire gilts each weighing about 

 27.3 kg were allotted to each of the seven treat- 

 ment groups. Two of the seven pigs of each 

 menhaden-oil group were fed the appropriate 

 oil-containing diet until they attained a body 

 weight of 68.0 kg and then were fed the control 

 diet until they attained a body weight of 90.9 

 kg. Similarly, two additional pigs of each men- 

 haden-oil group were fed the appropriate oil- 

 containing diet to a body weight of 79.5 kg and 

 then also were fed the control diet to a body 

 weight of 90.9 kg. The remaining three pigs 

 were continuously fed the various test diets con- 

 taining menhaden oil until they each also at- 

 tained a body weight of 90.9 kg. Feed was 



offered twice a day (for a maximum of 1 hr 

 per feeding) to the pigs in individual crate- 

 type pens. This interval of time was considered 

 to be adequate to permit the pigs to eat the same 

 total amount of food that they would have eaten 

 ad lib. Data on rates of gain and consumption 

 of feed were recorded weekly. 



Data obtained on rates of gain and utiliza- 

 tion of feed were subjected to an analysis of 

 variance (Snedecor, 1956). 



Table 3 presents the rates of gain, utilization 

 of feed, and quantity of oil consumed by the pigs 

 fed diets containing the various percentages of 

 menhaden oil. 



Results of the analyses of variance for each 



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