MORPHOLOGICAL CHANGES AND FATTY ACID COMPOSITION IN HEARTS FROM PIGS FED RAPESEED OIL, FISH OIL, PARTIALLY HYDROGENATED FISH OIL, PARTIALLY HYDROGENATED SOYBEAN OIL AND LARD

Publisher Website
Google Scholar
Abstract
Female pigs, fed diets in which 42% of the caloric intake came from either rapeseed oil, fish oil, partially hydrogenated fish oil, partially hydrogenated soybean oil or lard, were killed after 1 wk, 5 wk, 6 mo. and 1 yr. Type of fat or length of feeding did not affect the cardiac content of total fat which was normal in all animals. The fatty acid pattern of tissue triglycerides only partly reflected the fatty acid pattern of diets. The relative amounts of C22:1 and C20:1 were greatest after 6 mo. and leveled off during the following 6 mo. The content of C22:1 in cardiac triglycerides never exceeded 1/5 of the dietary concentration. Microscopic lipidosis was found in some pigs after 1 wk, 5 wk and 6 mo. Minor heart lesions consisting of focal necrosis of muscle cells were found after 1 wk and more frequently after 6 mo. and 1 yr. No relationship between incidence and severity of the heart lesions and any particular type of fat in the diet could be found.