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Mineral profile of crossbred F 1 Holstein x Gyr dairy cows during the transition period in summer and winter Arq. Bras. Med. Vet. Zootec.
Moreira,T.F.; Facury Filho,E.J.; Costa,A.L.B.S.A.; Meneses,R.M.; Casagrande,F.P.; Leme,F.O.P.; Uribe,J.A.Z.; Carvalho,A.U..
ABSTRACT The transition period is often a great challenge for dairy cows and mineral imbalances are frequent. With the aim to better understand the mineral profile of F1 Holstein x Gyr dairy cows and their performances under the different conditions of summer and winter, we collected blood samples to measure calcium, magnesium and phosphorus. Samplings were performed during summer and winter, on 15 and 13 pluriparous F1 Holstein x Gyr dairy cows, respectively. Blood sampling started 4 weeks prior to the expected calving date until 30 days postpartum. The mean concentrations of all three minerals had a different pattern during the transition period in each season, representing the interaction time x season. Calcium concentration was lower in winter and more...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypocalcemia; Hypomagnesemia; Milk fever; Hyperphosphatemia.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000401013
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