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Energy Efficiency and Nutrient Deposition in Early-Weaned Pigs, according to Fat Sources Containing Different Acidic Series

  • Bosi, P. (DIPROVAL - Sez. Allevamenti Zootecnici - Degree in Animal Production Science and Technology University of Bologna) ;
  • Jung, H.J. (Department of Animal Science and Technology, College of Agriculture and Life Sciences, Seoul National University) ;
  • Han, In K. (Department of Animal Science and Technology, College of Agriculture and Life Sciences, Seoul National University) ;
  • Cacciavillani, J.A. (DIPROVAL - Sez. Allevamenti Zootecnici - Degree in Animal Production Science and Technology University of Bologna) ;
  • Casini, L. (DIPROVAL - Sez. Allevamenti Zootecnici - Degree in Animal Production Science and Technology University of Bologna) ;
  • Mattuzzi, S. (DIPROVAL - Sez. Allevamenti Zootecnici - Degree in Animal Production Science and Technology University of Bologna)
  • Received : 1999.05.15
  • Accepted : 1999.10.16
  • Published : 2000.07.01

Abstract

To evaluate energy efficiency and partition of nutrients, 32 piglets were weaned at 14 d of age and individually fed diets containing 15% fat from coconut oil (CO, medium chain saturated), high oleate sunflower oil (HOSO, n-9 series), soybean oil (SO, n-6 series), or linseed oil plus fish oil, (LF, n-3 series). After 4 weeks, the subjects were sacrificed to evaluate empty body composition and apparent ileal digestibility with the slaughter method. No statistical effect of dietary fat sources on growth was observed. The digestibility of fat from the coconut oil diet was higher than fats from the diets containing high levels of unsaturated fatty acids. The efficiency of use of metabolizable energy for growth averaged 63% and was not affected by the diet. Dietary fat composition was reflected strongly in backfat. Total body neutral and polar fatty acids were influenced too. For the whole body phospholipid fraction the ratio of n-6 to n-3 and the double bond index were 4.3, 5.8, 7.2, 0.78 and 69, 87, 89, 87 for CO, HOSO, SO, and LF respectively. These results show that for the coconut oil diet the degree of unsaturation of phospholipids in the body was lower and that, in the other diets, it did not differ, but double bond index was maintained with different n-6 to n-3 ratios in carcass fat. On the whole the data on body fat composition indicate that the dietary fat tended to be deposited in similar quantity in the body, whatever was the dietary fatty acid profile.

Keywords

Piglets;Fatty Acids;Fats;Energetic Efficiency;Phospholipids

Acknowledgement

Supported by : MAF-SGRP(Ministry of Agriculture and Forestry)

Cited by

  1. Exocrine Pancreatic Secretion Is Stimulated in Piglets Fed Fish Oil Compared with Those Fed Coconut Oil or Lard vol.131, pp.12, 2001, https://doi.org/10.1093/jn/131.12.3222