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Fat mobilisation in large white pigs selected for low backfat thickness
Author(s) -
Gregory Neville G.,
Wood Jeffrey D.,
Enser Michael,
Smith William C.,
Ellis Michael
Publication year - 1980
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740310608
Subject(s) - control line , zoology , large white , biology , plasma concentration , fatty acid , composition (language) , insulin , chemistry , food science , endocrinology , biochemistry , linguistics , philosophy , transmission line , electrical engineering , engineering
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.