Differences in energy intake affect body composition and adipose tissue accretion in young growing piglets
1992
Morkeberg, J.C. | Sheng, H.P. | Mersmann, H.J.
From d 7 to d 32 of age, piglets were fed one of three diets that varied in energy content: LE, lowest; IE, intermediate; and HE, highest. The protein, vitamin and mineral content was constant, the fat content varied, and the amount fed was on a body-weight basis. Body fat, adipose tissue fat and adipocyte size were proportional to energy intake. Adipocyte distribution was bimodal at d 32; cells < 25 micrometer in diameter represented 60% of the total in the LE group and 40% in the IE and HE groups. Composition of the body fat-free mass did not differ. Pigs from all three dietary groups were fed a high-energy diet from d 32 to d 57. At d 57, pigs from the LE group had larger adipocytes than pigs from the IE and HE groups. Adipocyte distribution appeared trimodal in all groups at d 57; cells < 25 micrometers in diameter represented < 40% of the total. The number of cells > 25 micrometers was larger in the LE than in the IE and HE groups.
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