Effects of silage species and supplemental vitamin E on the oxidative stability of milk

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Effects of silage species and supplemental vitamin E on the oxidative stability of milk. / Beck, Neil F. G.; Dewhurst, Richard J.; Al-Mabruk, R. M.

In: Journal of Dairy Science, Vol. 87, No. 2, 2004, p. 406-412.

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Beck, Neil F. G. ; Dewhurst, Richard J. ; Al-Mabruk, R. M. / Effects of silage species and supplemental vitamin E on the oxidative stability of milk. In: Journal of Dairy Science. 2004 ; Vol. 87, No. 2. pp. 406-412.

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@article{b81a5b853e404a3786ccc465e072cae9,
title = "Effects of silage species and supplemental vitamin E on the oxidative stability of milk",
abstract = "Two experiments were conducted to study the effects of feeding legume silages and providing supplemental vitamin E in concentrates on the oxidative stability of milk. In experiment 1, six multiparous Holstein- Friesian cows were offered 1 of 6 silage treatments in a cyclical changeover-design experiment, with four 4- wk periods. The silages were grass, red clover, white clover, alfalfa, grass and red clover mixture (50:50 on a DM basis), and grass and white clover mixture (50:50 on a DM basis). In experiment 2, 8 cows were used in a changeover-design experiment with three 4-wk periods. The 4 treatments were a factorial combination of forages (grass silage or red clover silage) and supplemental vitamin E in the form of all-rac-α-tocopheryl acetate (29 or 290 IU/kg of DM in the concentrate). All forages were offered ad libitum and a flat rate of concentrates (8 kg/d) was fed in both experiments. Red clover silage led to significantly higher forage intakes, milk yields, and milk protein percentage in experiment 2, which was in agreement with results from experiment 1. There was no effect of vitamin E on feed intake, milk production, or milk fat and protein percentage. Red clover silage also led to significant changes in milk fatty acid profiles, particularly increased levels of polyunsaturated fatty acids. Milk samples were stored at 4°C and 20°C and analyzed for α-tocopherol and thiobarbituric acid reactive substances at intervals to determine oxidative stability. Diets based on red clover and alfalfa silages were associated with more rapid loss of α-tocopherol and increased production of thiobarbituric acid reactive substances during the storage of milk in comparison with diets based on grass silage. The increased oxidative deterioration of milk produced from cows fed red clover silage was avoided by vitamin E supplementation.",
keywords = "legume silage, milk oxidation, red clover, vitamin E",
author = "Beck, {Neil F. G.} and Dewhurst, {Richard J.} and Al-Mabruk, {R. M.}",
note = "Al-Mabruk, R. M., Beck, N. F. G., Dewhurst, R. J. (2004). Effects of silage species and supplemental vitamin E on the oxidative stability of milk.   Journal of Dairy Science, 87, (2), 406-412 Sponsorship: Department for Environment, Food, and Rural Affairs, the Milk Development Council, the European Union, and the Government of Libya",
year = "2004",
doi = "10.3168/jds.S0022-0302(04)73180-X",
language = "English",
volume = "87",
pages = "406--412",
journal = "Journal of Dairy Science",
issn = "0022-0302",
publisher = "Elsevier",
number = "2",

}

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TY - JOUR

T1 - Effects of silage species and supplemental vitamin E on the oxidative stability of milk

AU - Beck, Neil F. G.

AU - Dewhurst, Richard J.

AU - Al-Mabruk, R. M.

N1 - Al-Mabruk, R. M., Beck, N. F. G., Dewhurst, R. J. (2004). Effects of silage species and supplemental vitamin E on the oxidative stability of milk.   Journal of Dairy Science, 87, (2), 406-412 Sponsorship: Department for Environment, Food, and Rural Affairs, the Milk Development Council, the European Union, and the Government of Libya

PY - 2004

Y1 - 2004

N2 - Two experiments were conducted to study the effects of feeding legume silages and providing supplemental vitamin E in concentrates on the oxidative stability of milk. In experiment 1, six multiparous Holstein- Friesian cows were offered 1 of 6 silage treatments in a cyclical changeover-design experiment, with four 4- wk periods. The silages were grass, red clover, white clover, alfalfa, grass and red clover mixture (50:50 on a DM basis), and grass and white clover mixture (50:50 on a DM basis). In experiment 2, 8 cows were used in a changeover-design experiment with three 4-wk periods. The 4 treatments were a factorial combination of forages (grass silage or red clover silage) and supplemental vitamin E in the form of all-rac-α-tocopheryl acetate (29 or 290 IU/kg of DM in the concentrate). All forages were offered ad libitum and a flat rate of concentrates (8 kg/d) was fed in both experiments. Red clover silage led to significantly higher forage intakes, milk yields, and milk protein percentage in experiment 2, which was in agreement with results from experiment 1. There was no effect of vitamin E on feed intake, milk production, or milk fat and protein percentage. Red clover silage also led to significant changes in milk fatty acid profiles, particularly increased levels of polyunsaturated fatty acids. Milk samples were stored at 4°C and 20°C and analyzed for α-tocopherol and thiobarbituric acid reactive substances at intervals to determine oxidative stability. Diets based on red clover and alfalfa silages were associated with more rapid loss of α-tocopherol and increased production of thiobarbituric acid reactive substances during the storage of milk in comparison with diets based on grass silage. The increased oxidative deterioration of milk produced from cows fed red clover silage was avoided by vitamin E supplementation.

AB - Two experiments were conducted to study the effects of feeding legume silages and providing supplemental vitamin E in concentrates on the oxidative stability of milk. In experiment 1, six multiparous Holstein- Friesian cows were offered 1 of 6 silage treatments in a cyclical changeover-design experiment, with four 4- wk periods. The silages were grass, red clover, white clover, alfalfa, grass and red clover mixture (50:50 on a DM basis), and grass and white clover mixture (50:50 on a DM basis). In experiment 2, 8 cows were used in a changeover-design experiment with three 4-wk periods. The 4 treatments were a factorial combination of forages (grass silage or red clover silage) and supplemental vitamin E in the form of all-rac-α-tocopheryl acetate (29 or 290 IU/kg of DM in the concentrate). All forages were offered ad libitum and a flat rate of concentrates (8 kg/d) was fed in both experiments. Red clover silage led to significantly higher forage intakes, milk yields, and milk protein percentage in experiment 2, which was in agreement with results from experiment 1. There was no effect of vitamin E on feed intake, milk production, or milk fat and protein percentage. Red clover silage also led to significant changes in milk fatty acid profiles, particularly increased levels of polyunsaturated fatty acids. Milk samples were stored at 4°C and 20°C and analyzed for α-tocopherol and thiobarbituric acid reactive substances at intervals to determine oxidative stability. Diets based on red clover and alfalfa silages were associated with more rapid loss of α-tocopherol and increased production of thiobarbituric acid reactive substances during the storage of milk in comparison with diets based on grass silage. The increased oxidative deterioration of milk produced from cows fed red clover silage was avoided by vitamin E supplementation.

KW - legume silage

KW - milk oxidation

KW - red clover

KW - vitamin E

U2 - 10.3168/jds.S0022-0302(04)73180-X

DO - 10.3168/jds.S0022-0302(04)73180-X

M3 - Article

VL - 87

SP - 406

EP - 412

JO - Journal of Dairy Science

JF - Journal of Dairy Science

SN - 0022-0302

IS - 2

ER -

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