caa a22 4500 388063068 CHVBK 20180307125126.0 cr unu---uuuuu 161130e199809 xx s 000 0 eng 10.1017/S0007114598001329 doi S0007114598001329 pii (NATIONALLICENCE)cambridge-10.1017/S0007114598001329 Effect of feeding tuna oil or soyabean oil as supplements to sows in late pregnancy on piglet tissue composition and viability [Elektronische Daten] To investigate whether long-chain n-3 polyunsaturated fatty acids could cross the porcine placenta in late pregnancy and alter neonatal piglet tissue composition, multiparous sows (seven per diet) were fed on diets containing a supplement (30 g/kg) of either soyabean oil or tuna oil for the last 21 d of pregnancy and the first 7 d of lactation. The proportions of all fatty acids, except 18:1n-7, differed between diets: in particular, the tuna-oil-containing diet supplied more 22:6n-3 and less 18:2n-6 fatty acids than the soyabean-oil-containing diet. The proportions of n-3 fatty acids, particularly 22:6n-3 (g/100 g total fatty acids) in sow plasma, colostrum and milk were increased and the proportion of 18:2n-6 was decreased by feeding tuna oil. Piglet tissue n-3 fatty acid proportions (particularly 22:6n-3), obtained shortly after birth, were increased in piglets born to tuna-oil-fed sows compared with progeny of soyabean-oil-fed sows. The increase in the proportion of n-3 fatty acids (g/100 g total fatty acids) in piglet tissues as a result of tuna-oil feeding, compared with soyabean-oil-feeding, was in the order plasma>liver>erythrocytes>spleen>brain>retina. Piglets born to tuna-oil-fed sows had a lower viability score at birth than the progeny of soyabean-oil-fed sows. The proportions of long-chain n-3 fatty acid in tissues of new-born piglets were increased by feeding tuna oil to the sow in late pregnancy; however no improvements in piglet viability were observed. Copyright © The Nutrition Society 1998 Pregnancy nationallicence Tuna oil nationallicence Tissue fatty acids nationallicence Pig nationallicence Rooke J. A. Animal Biology Division, SAC, Craibstone Estate, Aberdeen AB21 9YA, UK Bland I. M. Animal Biology Division, SAC, Craibstone Estate, Aberdeen AB21 9YA, UK Edwards S. A. Animal Biology Division, SAC, Craibstone Estate, Aberdeen AB21 9YA, UK British Journal of Nutrition Cambridge University Press 80/3(1998-09), 273-280 0007-1145 80:3<273 1998 80 BJN https://doi.org/10.1017/S0007114598001329 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0007114598001329 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rooke J. A. Animal Biology Division, SAC, Craibstone Estate, Aberdeen AB21 9YA, UK NATIONALLICENCE 700 1- Bland I. M. Animal Biology Division, SAC, Craibstone Estate, Aberdeen AB21 9YA, UK NATIONALLICENCE 700 1- Edwards S. A. Animal Biology Division, SAC, Craibstone Estate, Aberdeen AB21 9YA, UK NATIONALLICENCE 773 0- British Journal of Nutrition Cambridge University Press 80/3(1998-09), 273-280 0007-1145 80:3<273 1998 80 BJN CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge