SciELO - Scientific Electronic Library Online

 
vol.46 número2Caracterización de Staphylococcus aureus aislados a partir de casos de mastitis subclínicas en dos tambos de UruguayIdentificación de los polimorfismos G1 y G8 del gen GDF9 en ovinos criollos Araucanos índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Archivos de medicina veterinaria

versión impresa ISSN 0301-732X

Resumen

SANCHEZ, JL; WAGEMANN, CA; STRIEDER-BARBOZA, C  y  NORO, M. Gluconeogenic capacity and energy balance in grazing dairy cows treated with a low dose of recombinant bovine somatotropin in transition period. Arch. med. vet. [online]. 2014, vol.46, n.2, pp.321-326. ISSN 0301-732X.  http://dx.doi.org/10.4067/S0301-732X2014000200019.

The aim of the study was to establish the low dose effect (250 mg/cow) of recombinant bovine somatotropin (rbST) in grazing dairy cows during the transition period on energy-protein balance parameters and gluconeogenic capacity. 3 assays were conducted: Prepartum, 10 prepartum cows were used: bST group (bST, n = 5), single dose of rbST on the 26th day (d) prepartum, and control (n = 5); blood samples and body condition score (BCS) were obtained every 3d from 26thd to 6thd prepartum. Pospartum, 10 postpartum cows were used: bST group (n = 5), single dose of rbST on the 6thd postpartum, and control (n = 5); blood samples, body weight (BW), BCS and milk production were obtained and recorded every 3 days from 6thd to 27thd postpartum. Transition, 14 prepartum cows were used: bST group (n = 7), treated with rbST every 14 days from 21thd prepartum to 7thd postpartum, and control (n = 7); blood samples, BW and BCS score were obtained every 3 days from 21thd prepartum to 7thd postpartum; additionally, a propionate loading test was performed (bST, n = 4; control, n = 4) on the 9th d postpartum to assess conversion of propionate to glucose. In all the assays, energy and protein plasma concentration were determined. The treatment of grazing dairy cows with a single dose of rbST in prepartum did not change the energy balance, while in early postpartum it increased milk production without a detrimental effect on energy balance. Propionate to glucose conversion in early postpartum was not affected by the prepartum administration of rbST.

Palabras clave : energy-protein balance; transition period; somatotropin; cows.

        · resumen en Español     · texto en Español     · Español ( pdf )