Effects of an energy-dense diet and nicotinic acid supplementation on production and metabolic variables of primiparous or multiparous cows in periparturient period
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S. Kersten | H. Sauerwein | K. Huber | J. Rehage | J. Frahm | S. Dänicke | U. Meyer | M. Mielenz | L. Locher | R. Tienken | Á. Kenéz