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Van Knegsel, A.T.M., van den Brand, H., Dijkstra, J. and Kemp, B. (2007) Effects of dietary energy source on energy balance, metabolites and reproduction variables in dairy cows in early lactation. Theriogenology, 68, S274S280. doi:10.1016/j.theriogenology.2007.04.043

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• TITLE: Profiles of energy metabolites and haptoglobin in dairy cows under organic management in Alberta farms

  AUTHORS: John F. Odhiambo, Umar Farooq, Summera Iqbal, Dominik Mansmann, Qendrim Zebeli, Suzanna M. Dunn, Burim N. Ametaj

  KEYWORDS: Organic Cows; BHBA; NEFA; Haptoglobin

  JOURNAL NAME: Open Journal of Animal Sciences, Vol.3 No.2, April 18, 2013

  ABSTRACT: Profiles of energy metabolites and haptoglobin (Hp) in dairy cows that are transitioned from conventional to organic management in various Alberta farms were compared with those of dairy cows managed conventionally at the University of Alberta dairy farm. Blood samples were collected during the following periods: Dry, 0 - 30, 30 - 60, and 60 - 90 days in milk (DIM, n = 7 cows). Concentrations of metabolites were evaluated by enzymatic colorimetric methods. Concentrations of Hp were determined by bovine ELISA kits. Data were analyzed by the mixed procedures of SAS. Concentrations of NEFA and BHBA in blood were elevated (P