%0 Journal Article
%T Perfil s¨¦rico de las Hormonas Luteinizante, Fol¨ªculo Estimulante y 17¦Â-Estradiol en cerdas Landrace x Large White durante el pre-parto, lactancia y posdestete
%A L¨®pez-Ortega
%A Aura
%A Saballo
%A Antonio
%A Medina
%A Iraima
%A M¨¢rquez
%A Ysabel C
%A M¨¢rquez
%A Adelys A
%J Revista de la Facultad de Ciencias Veterinarias
%D 2009
%I Universidad Central de Venezuela
%X one of the indexes of productivity of the sow is the number of suckling pigs along the year and depends on the length of gestation, lactation and weaning-pregnancy interval. the objective of this study was to determine the profile of lh, fsh and 17¦Â-estradiol during the pre-farrowing, lactation and post-weaning periods, of 15 pregnant cross-bred sows (landrace x large white), belonging to a farm in yaracuy state. by punction of the jugular vein a blood sample was drawn on d 7 before the farrowing, on d 1, 7, 14 and 21 post-farrowing on d 1 and 3 post-weaning. hormone quantification was performed using an elisa test. the statistical analysis was made by the program spss version 10.0 for windows. a descriptive test followed by multiple comparison, was applied (p<0.05). lh increased during the lactation until a maximum value on d 3 post-weaning (7.40¡À0.97 mu/ml). fsh levels were lower (p>0.001) during the post-farrowing period in comparison to the pre-farrowing period (6.30¡À1.10 mu/ml), whereas at weaning the levels increased. the maximum concentration of the e2 was observed on the third day post-weaning (2139.67¡À125.2 ¦Ìg/ml) and it was simultaneous with the proper estrous behavior. in the cross-bred sow the hormonal profile is a fine balance of endocrine regulation that allows the farrowing, the lactation and the recovery of the cyclic activity of the ovary, during the early post-weaning period.
%K sows
%K hybrids
%K landrace
%K large white
%K lactation
%K hormones
%K yaracuy.
%U http://www.scielo.org.ve/scielo.php?script=sci_abstract&pid=S0258-65762009000100006&lng=en&nrm=iso&tlng=en