Metabolic, enzymatic and endocrine status in high-yielding dairy cows--Part 2

Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine
K AeberhardJ W Blum

Abstract

Pairs of 29 high-yielding (HC) dairy cows (> or = 45 kg/day reached at least once during lactation) and 29 corresponding control (CC) cows (with milk yields representing the average yield of the herds) were studied in 29 Swiss farms from March 1995 to September 1996. The hypothesis tested was that there are differences in metabolic, enzymatic and endocrine status between HC and CC cows. Cows were studied 2 weeks before and at 5, 9, 13, 17 and 40 weeks post-partum. Concentrations of metabolites, minerals and hormones and enzyme activities were in the normal range in both HC and CC cows. Changes in metabolic and endocrine traits in early lactation expressed insufficient energy intake, but were similar in both HC and CC cows. Homeorhetic and homeostatic control of metabolism in HC cows was thus adequate to adjust to and allow high milk yields. Under adequate husbandry, management and feeding conditions, metabolic disease problems in HC cows [10,500 kg energy-corrected milk (ECM)/lactation, peak yields of > or = 45 kg ECM/day] can be avoided.

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Citations

Dec 20, 2002·Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine·A BusatoJ W Blum
Aug 17, 2006·Australian Veterinary Journal·E KennermanH Biricik
Nov 26, 2010·Journal of Animal Physiology and Animal Nutrition·R KupczyńskiB Króliczewska
Dec 3, 2014·Journal of Animal Physiology and Animal Nutrition·F PetreraF Abeni
Nov 17, 2015·Animal : an International Journal of Animal Bioscience·C GaillardJ Sehested
Sep 17, 2013·Journal of Animal Physiology and Animal Nutrition·H A van DorlandR M Bruckmaier
Jan 22, 2003·Reproduction in Domestic Animals = Zuchthygiene·A KollerU Küpfer
Jun 16, 2005·Journal of Dairy Science·M RoeschJ W Blum
Apr 11, 2020·BMC Veterinary Research·Matheus Fellipe de Lana FerreiraIsabela de Paula Cidrine
Nov 26, 2020·Anais Da Academia Brasileira De Ciências·Daiane S Dos SantosAleksandro S DA Silva

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