Effect of different rumen-inert fatty acids supplemented with a dietary antioxidant on performance and antioxidative status of early-lactation cows

Journal of Dairy Science
Y M WangM Vazquez-Añon

Abstract

The objective of the study was to evaluate the effect of diets supplemented with fatty acids of different degrees of saturation, in the absence or presence of an antioxidant (AOX; Agrado Plus, Novus International Inc., St. Charles, MO), on dairy cow lactation performance. Calcium salts of long-chain fatty acids were supplemented as a source of lower saturation fatty acid, and a palm acid product was supplemented as the higher saturation fatty acid source. Sixty early-lactation Chinese Holstein cows (100+/-23 d in milk) were randomly allocated to 4 dietary treatments in a 2 x 2 factorial design: (1) lower saturation fatty acid (LS), (2) LS and AOX, (3) higher saturation fatty acid (HS), and (4) HS and AOX. The Ca salts of long-chain fatty acids and palm acid product were supplied at 1.8 and 1.5% on a dry matter basis, respectively, to form isoenergetic diets. The AOX was added at 0.025% in the ration. The experiment lasted 9 wk, including 1 wk for adaptation. Lactation performance was recorded and milk was sampled and analyzed weekly. Blood samples were taken from the coccygeal vein to determine metabolism parameters on d 16, 36, and 56 during the experiment. Neither fatty acid type nor AOX supplementation showed a significant e...Continue Reading

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Citations

Aug 21, 2013·Biological Trace Element Research·Yanan WuTian Wang
Aug 8, 2015·Animal Science Journal = Nihon Chikusan Gakkaihō·Chihiro SaitoHiroshi Kajikawa
Mar 11, 2016·Oxidative Medicine and Cellular Longevity·Xiaolu JinJianxin Liu
Aug 16, 2017·Research in Veterinary Science·Vengai Mavangira, Lorraine M Sordillo
Jun 12, 2021·Animal : an International Journal of Animal Bioscience·Ž Klir ŠalavardićZ Antunović

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