RT Journal Article
T1 Effect of sex, dietary glycerol or dietary fat during late fattening, on fatty acid composition and positional distribution of fatty acids within the triglyceride in pigs
A1 Segura Plaza, José Francisco
A1 Cambero Rodríguez, María Isabel
A1 Cámara, L.
A1 Loriente, C.
A1 Mateos, G.G.
A1 López Bote, Clemente José
AB The effect of sex, source of saturated fat (lard v. palm oil) and glycerol inclusion in the fattening diet on composition and fatty acid positional distribution in the triglyceride molecule was studied in pigs from 78 to 110 kg BW. Average daily gain and carcass characteristics, including ham and loin weight, were not affected by dietary treatment but sex affected backfat depth (P<0.01). A significant interaction between sex and glycerol inclusion was observed; dietary glycerol increased lean content in gilts but not in barrows (P<0.05 for the interaction). Individual and total saturated fatty acid (SFA) concentrations were greater in barrows than in gilts. In contrast, the concentration of total polyunsaturated fatty acids (PUFA) and of C18:2n-6, C18:3n-3, C20:3n-9 and C20:4n-6 in the intramuscular fat (IMF) was higher (P<0.05) in gilts than in barrows. Sex did not affect total monounsaturated fatty acids (MUFA) concentration in the IMF. The proportion of SFA in the subcutaneous fat (SF) was higher in barrows than in gilts (P<0.001). Within the individual SFA, sex affected only the concentrations of C14:0 and C16:0 (P<0.001). Dietary fat did not affect total SFA or PUFA concentrations of the IMF but the subcutaneous total MUFA concentration tended to be higher (P=0.079) in pigs fed lard than in pigs fed palm oil. Dietary glycerol increased total MUFA and C18:1n-9 concentration in the IMF and increased total MUFA and decreased C18:2n-6, C18:3n-3 and total PUFA concentrations in the SF. The data indicate that altering the fatty acid composition of the triglyceride molecule at the 2-position, by dietary intervention during the fattening phase, is very limited
PB ELSEVIER SCI LTD
SN 1751-7311
YR 2015
FD 2015-07
LK https://hdl.handle.net/20.500.14352/94583
UL https://hdl.handle.net/20.500.14352/94583
LA eng
NO Segura, J., Cambero, M. I., Cámara, L., Loriente, C., Mateos, G. G., & López-Bote, C. J. (2015). Effect of sex, dietary glycerol or dietary fat during late fattening, on fatty acid composition and positional distribution of fatty acids within the triglyceride in pigs. Animal : an international journal of animal bioscience, 9(11), 1904–1911.
NO MEDGAN
NO Comunidad de Madrid and CEI Campus Moncloa UCM-UPM
NO Ministerio de Economía y Competitividad
DS Docta Complutense
RD 15 may 2025