Fat mobilisation in large white pigs selected for low backfat thickness

Neville G. Gregory, Jeffrey D. Wood, Michael Enser, William C. Smith, Michael Ellis

Research output: Contribution to journalReview articlepeer-review


Plasma free fatty acid (FFA), glucose and insulin responses to feeding and fasting were investigated in a sample of two lines of Large White pigs. One line had been selected for nine generations against backfat thickness and for improved growth rate and feed conversion efficiency. The other line had been randomly bred for six generations. No between‐line differences in the plasma constituents were observed in the fed or absorptive state. This is assumed to be the state in which the pigs were reared since they were without food for a maximum of 16 h daily. An increase in the concentration of plasma FFA, indicating the presence of the starved state, only occurred after 16 h without food. It is suggested therefore that changes in these plasma constituents are not important in the reduced fat deposition in the Selection line pigs. In the starved state, however, the Selection line pigs had higher concentrations of plasma FFA than Control line pigs. The relevance of this finding to the differences in body composition is discussed.

Original languageEnglish (US)
Pages (from-to)567-572
Number of pages6
JournalJournal of the Science of Food and Agriculture
Issue number6
StatePublished - Jun 1980
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Agronomy and Crop Science
  • Nutrition and Dietetics


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