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Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka, Vol.67 No.2 Travanj 2017.

Izvorni znanstveni članak
https://doi.org/10.15567/mljekarstvo.2017.0204

Plasma and milk fatty acid composition as a response to dietary n-3 fatty acids and selenium in periparturient Holstein cows

Mislav Đidara   ORCID icon orcid.org/0000-0002-9609-2098 ; Josip Juraj Strossmayer University, Faculty of Agriculture in Osijek, Department of Animal Husbandry, P. Svačića 1D, 31000 Osijek, Croatia
Marcela Šperanda   ORCID icon orcid.org/0000-0003-0785-5485 ; Josip Juraj Strossmayer University, Faculty of Agriculture in Osijek, Department of Animal Husbandry, P. Svačića 1D, 31000 Osijek, Croatia
Matija Domaćinović ; Josip Juraj Strossmayer University, Faculty of Agriculture in Osijek, Department of Animal Husbandry, P. Svačića 1D, 31000 Osijek, Croatia
Josip Novoselec   ORCID icon orcid.org/0000-0001-9763-3522 ; Josip Juraj Strossmayer University, Faculty of Agriculture in Osijek, Department of Animal Husbandry, P. Svačića 1D, 31000 Osijek, Croatia
Tomislav Mašek ; University of Zagreb, Veterinary Faculty, Department of Animal Nutritionand Dietetics, Heinzelova 55, 10000 Zagreb, Croatia
Mirta Balenović ; Croatian Veterinary Institute, Poultry Centre, Heinzelova 55, 10000 Zagreb, Croatia
Nina Poljičak Milas ; University of Zagreb, Veterinary Faculty, Department of Pathophysiology, Heinzelova 55, 10000 Zagreb, Croatia
Neška Vukšić ; Josip Juraj Strossmayer University, Faculty of Agriculture in Osijek, Department of Animal Husbandry, P. Svačića 1D, 31000 Osijek, Croatia

Puni tekst: engleski, pdf (180 KB) str. 123-129 preuzimanja: 108* citiraj
APA
Đidara, M., Šperanda, M., Domaćinović, M., Novoselec, J., Mašek, T., Balenović, M., Poljičak Milas, N., Vukšić, N. (2017). Plasma and milk fatty acid composition as a response to dietary n-3 fatty acids and selenium in periparturient Holstein cows. Mljekarstvo : časopis za unaprjeđenje proizvodnje i prerade mlijeka, 67(2). doi:10.15567/mljekarstvo.2017.0204

Sažetak
Linseed is well known for abundant content of α-linolenic acid why it has been widely used as a source of n-3 fatty acid. Higher ratio of polyunsaturated fatty acids can increase lipid peroxidation. Selenium (Se) plays a key role in antioxidant enzymes and can therefore be regarded for use in attempts focused on protection of fatty acids from oxidation. The organic Se has been shown to have higher bioavailability compared to the inorganic selenium. The aim of this research was to determine the influence of dietary replacement of n-6 with n-3 polyunsaturated fatty acids on plasma and milk fatty acid composition in the dairy cows. The experiment was conducted on 30 dairy Holstein cows in the period from parturition until the 3rd week of lactation. Soybean meal from control (C) group was replaced with grounded linseed in the both experimental (LS and LS+Se) groups. In addition to that, in the 2nd experimental (LS+Se) group sodium selenite from premix was replaced with organic selenium. Blood and milk samples were collected at 21st day of lactation and fatty acids were determined using gas chromatography from it. Feeding dairy cows during transition period with linseed showed a positive impact on milk fatty acid composition by increasing (P<0.05) the proportion of n-3 fatty acids. Proportion of α-linolenic fatty acid increased (P<0.05) in the blood of both groups fed with linseed, but was significant (P<0.05) only in milk of LS+Se group. Such data indicated that the addition of organic selenium acted favourable on α-linolenic fatty acid increase in milk. During early postpartum period addition of linseed in meal of dairy cow’s increased (P<0.05) ratio of oleic acid, but in combination with organic source of selenium this increase was not evident (P>0.05).

Ključne riječi
dairy cows; linseed; fatty acids; milk composition

Hrčak ID: 180152

URI
http://hrcak.srce.hr/180152

[hrvatski]

Posjeta: 227 *