Naslov
Immune and oxidative response to linseed in the diet of periparturient Holstein cows

Autori
Đidara, Mislav ; Poljičak-Milas, Nina ; Milinković-Tur, Suzana ; Mašek, Tomislav ; Šuran, Jelena ; Pavić, Mirela ; Kardum, Matko ; Šperanda, Marcela

Izvornik
Animal (1751-7311) 9 (2015), 8; 1349-1354

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
dairy cows ; immune response ; oxidative stress ; linseed ; fatty acids

Sažetak
The aim of this research was to determine the influence of dietary replacement of n-6 with n- 3 polyunsaturated fatty acids on cellular immunity and oxidative stress in the transition period dairy cows. The experiment was conducted on 20 dairy Holstein cows from 3 ± 1 weeks before parturition until the 6th week of lactation. Both groups were fed an iso- energetic and iso-nitrogenous diet. Soybean meal from control (C) group was replaced with linseed in the experimental (LS) group. Cellular immunity and oxidative stress were measured on days −10, 1, 21 and 42 relative to parturition. During the entire experimental period, the proportion of CD45+ cells was lower ( P<0.05) in LS group compared with the C group. The phagocytosis ability and phagocytosis index of cows fed with n-3 fatty acids were significantly reduced ( P<0.05) compared with the group of cows fed with n-6 fatty acids. The most severe decrease in phagocytosis ability was on day −10 and 1 relative to parturition. The activity of superoxide dismutase ( P<0.05) and plasma glutathione peroxidase ( P<0.05) increased around calving, although activities were not influenced by dietary treatment. Increased malondialdehyde concentration ( P<0.05) was influenced by dietary n-3 fatty acids and the time relative to parturition. The immune suppression was most pronounced during periparturient period. In that matter we can conclude that not only dietary n-3 fatty acids but also oxidative stress, which reached peak at time of parturition, contributed to the reduced cellular immunity during the periparturient period.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina, Biotehnologija u biomedicini (prirodno područje, biomedicina i zdravstvo, biotehničko područje)

POVEZANOST RADA