02186naa a2200325 a 450000100080000000500110000800800410001910000230006024501090008326000090019250000980020152011860029965000110148565000200149665000090151665000160152565000150154165000240155665300070158065300100158765300280159770000210162570000290164670000190167570000180169470000220171270000180173470000180175277300900177020918322019-02-25       2018    bl uuuu     u00u1 u    #d1 aFRANZONI, A. P. S.  aMetabolic and hormone profiles of Holstein x Gyr cows during pre- and postpartum.h[electronic resource]  c2018  aTítulo em português: Perfis metabólico e hormonal de vacas Girolando em pré e pós-parto.  aThe objective of this work was to describe the effect of genetic composition on body condition score (BCS), on total lactation production, and on metabolic and hormone profiles of Holstein x Gyr cows under the same pre- and postpartum management conditions. The genetic groups ½ (n=8), ¾ (n=10), and ?? (n=10) Holstein x Gyr (HG) were evaluated within the same farm, and all of them showed typical lactation curves. The time required to reach peak production did not differ between groups. The groups also did not differ as to time to reach the lowest BCS after calving or to recover BCS after calving, nor as to their BCS values in the week of first ovulation, number of weeks required for first ovulation, and service period. However, ½ HG cows had higher BCS at calving, but also greater BCS loss postpartum. Total lactation production and plasma insulin concentrations of ¾ HG cows postpartum were similar to those of cows specifically selected for milk production. Using parameters obtained with Holstein cows to determine management conditions in farms with crossbred cows can have unwanted consequences, since these animals have different metabolic and hormone profiles.  aCattle  aLactation curve  aZebu  aBos Indicus  aBos Taurus  aCurva de Lactação  aGH  aIGF-1  aPeríodo de transição1 aGLORIA, J. R. da1 aCOSTA, A. L. B. de S. A.1 aMARTINS, R. A.1 aAMARAL, T. F.1 aAZEVEDO, R. A. de1 aCAMPOS, E. F.1 aCOELHO, S. G.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 53, n. 3, p. 371-377, mar. 2018.