%0 Journal Article
%T Inducci¨®n a la maduraci¨®n final y ovulaci¨®n del yam¨² Brycon amazonicus con EPC y mGnRH-a
%A Pardo-Carrasco
%A Sandra C
%A Arias-Castellanos
%A Jos¨¦ A
%A Su¨¢rez-Mahecha
%A H¨¦ctor
%A Cruz-Casallas
%A Pablo E
%A V¨¢squez-Torres
%A W¨¢lter
%A Atencio-Garc¨ªa
%A V¨ªctor
%A Zaniboni-Filho
%A Evoy
%J Revista Colombiana de Ciencias Pecuarias
%D 2006
%I Universidad de Antioquia
%X in females of yam¨² brycon amazonicus of first sexual maturation (two years old, body weight (bw) 1.500 ¡À 1 g and total length (tl) 42.6 ¡À 0.1 cm), two hormonal inductors were evaluated, carp pituitary extract (cpe) and mammalian gonadotropin-releasing hormone analogue (mgnrh-a). eight treatments were conducted: six with mgnrh-a (10, 15 and 20 ¦Ìg/kg bw in single injection and 10, 15 and 20 ¦Ìg/kg bw in two injections of 10 and 90%, respectively), one with cpe (5.5 mg/ kg bw in two applications, 10% and 90%, with an interval of 12 h), and one control (saline solution 0.9%). females induced with mgnrh-a and females controls did not spawn. the 83.3% of the females induced with cpe spawned at the 6.7 ¡À 0.14 h at 26.9 ¡À 0.18 oc (water temperature), with a mean of 117.6 ¡À 6.8 g per egg volume per female, and 1469.6 ¡À 34.1 eggs per gram. the fertility rate showed a mean of 55.3 ¡À 6.1% 6 hours after fertilization (haf), and 51 ¡À 5.8% of embryonic survival to 10 haf. the hatching happened at 12 haf. only females induced with cpe presented a significant growth of the diameter (p<0.05) of 1086 to 1178 ¦Ìm.
%K bryconinae
%K culture
%K reproduction.
%U http://www.scielo.org.co/scielo.php?script=sci_abstract&pid=S0120-06902006000200007&lng=en&nrm=iso&tlng=en