FISHERY BULLETIN: VOL. 69. NO. 2 



Table 26. — Outer backfat tissue — comparison of correlation coefficients and significant degree of poIjTiomial re- 

 gression obtained by relating the quantity of menhaden oil consumed (.Y) until the pigs attained body weights 

 of 90.9, 79.5, or 58.0 kg to the amount of individual fatty acids deposited in outer backfat tissue (K). 



P <.05 



P <.0I 



unsaturated fatty acids were present. Unsat- 

 urated fatty acids from four of the fatty acid 

 families (co3, co6, aj9, and co7) were found in 

 each of the tissues. 



The quantity of the characteristic fatty acids 

 (aj3) of the fish oil fed correlated significantly 

 and positively with the quantity of these fatty 

 acids deposited in the inner backfat tissues and 

 the outer ones and the liver tissues, but not in 

 the lovgisfsimus dorsi tissues. 



Similarly, the quantity of these cuS fatty acids 

 fed correlated sio^nificantly and positively with 

 a weighted organoleptic score of the inner back- 

 fat tissues. Removal of these fatty acids from 

 the diet of the pigs at two different body weights 

 — namely, 68.0 and 79.5 kg — prior to their be- 

 ing marketed at 90.9 kg resulted in a loss of 

 significance by the correlation coefficients, al- 

 though the correlation coefficients obtained were 

 positive. 



On a practical feeding basis, fish oil with sim- 

 ilar fatty acid composition consumption should 

 be limited to 0.8 Sr of the diet if fed until ]3igs 

 are marketed. If the oil is withdrawn from the 

 diet prior to marketing, higher levels can be fed. 



LITERATURE CITED 



AcKMAN, R. G., R. D. Burgher, a.nd P. M. Jang.aard. 

 196.3. Systematic identification of fatty acids in 

 the gas-liquid chromatography of fatty acid meth- 

 yl esters: a preliminary survey of seal oil. Can. 

 J. Biochem. Physiol. 41: 1627-1641. 

 Ackman, R. G., p. M. Jangaard, R. J. Ho^xe, and H. 

 Brockerhoff. 



1964. Origin of marine fatty aciiis. I. Analyses 

 of the fatty acids produced by the diatom Skel- 

 etonema costatum. J. Fish. Res. Bd. Can. 21: 

 747-756. 

 Anglemier, a. F., and J. E. Oij)field. 



1957. Feeding of various levels of pilchard (Cal- 

 ifornia sardine) oils to swine. J. Anim. Sci. 16: 

 922-926. 



300 



