Reproductive performance of bocachico Prochilodus magdalenae induced twice in the same year
Journal Title: Revista MVZ Cordoba - Year 2013, Vol 18, Issue 1
Abstract
Objective. To evaluate the reproductive performance of hormonally induced bocachico with carp pituitary extract (CPE) twice in the same year. Materials and methods. 23 females, in their final maturation phase, were induced with 5 mg EPC/Kg of body weight in two applications, initially 10% and 90% twelve hours later. Males was applied 80% of the total female dose. Results. After the first hormonal induction, females were fit again at 97.6±12.4 days. Ovulation rate in both hormonal inductions was 0.91 (21/23). Absolute fecundity (g-oocytes/female) showed no significant differences between the first and second induction (36.2 and 44.6 g oocytes/female, respectively) (p>0.05), but when expressed in number of oocytes per female there was a significant difference (p<0.05), the fertility rate being higher in the first induction (53535 oocytes/female) compared with the second induction (40658 oocytes/female). Relative fecundity, expressed in both g-oocytes/Kg-female and oocytes/Kg-female showed a significant difference, being higher in the first induction (p<0.05). Fertilization rate (73.9±19.6%) and hatching (56.9±17.9%) were higher in the first induction, compared to the second one(55.6±21.1% and 35.6±20.7%, respectively) (p<0.05). Conclusions. After hormonal induction a period of approximately three months is required for a female bocachico to reach final maturation and be suitable for a new hormonal induction. The ovulation rate was not affected by a second induction in the same year, but the absolute and relative fertility can be reduced between 24 and 66% and fertilization and hatching rates between 23 and 36%.
Authors and Affiliations
Víctor Atencio G, M. Sc *| Universidad de Córdoba, Facultad de Medicina Veterinaria y Zootecnia. Departamento de Ciencias Acuicultura, CINPIC. Montería, Colombia.Correspondencia: vatencio@hotmail.com, Eduardo Kerguelén D, Acuicultor| Universidad de Córdoba, Facultad de Medicina Veterinaria y Zootecnia. Departamento de Ciencias Acuicultura, CINPIC. Montería, Colombia., Elkin Naar, Acuicultor| Universidad de Córdoba, Facultad de Medicina Veterinaria y Zootecnia. Departamento de Ciencias Acuicultura, CINPIC. Montería, Colombia., Robert Petro, Acuicultor| Universidad de Córdoba, Facultad de Medicina Veterinaria y Zootecnia. Departamento de Ciencias Acuicultura, CINPIC. Montería, Colombia.
Keywords
Related Articles
- EP ID EP3289
- DOI -
- Views 374
- Downloads 15
Intake, digestibility and intake behaviour in cattle fed different levels of palm kernel cake
The potential use of palm kernel cake was evaluated as a replacement for soybean and corn meal in cattle feed, by investigating their intake, digestibility levels and the intake behaviour of cattle fed diets containing d...
Evaluation of Digestible lysine levels in diets with high energy density for finishing pigs
Objective. To evaluate the effects of different levels of digestible lysine in diets with high energy density on productive performance and carcass characteristics of finishing pigs. Materials and Methods. Seventy crossb...
Modeling of growth in Lohmann LSL pullets with neural networks and nonlinear regression models
Objective. Modeling the pullet growth curve of the Lohmann LSL line, by using nonlinear model (MNL), nonlinear mixed model (MNLM) and artificial neural networks (ANN). Materials and methods. An average of 33 birds, were...
Effect of the diet traditional and non-traditional on the respiration and excretion in larvae of white shrimp Litopenaeus vannamei
Objetive. It was studied the respiration and ammoniacal excretion of zoeas and mysis of Litopenaeus vannamei fed with the diet used traditionally (of microalgae and nauplios of artemia) and another alternative (not tradi...
Prevalence of Listeria monocytogenes in pork-meat and other processed products from the Colombian swine industry
Objective. To determine the prevalence of L. monocytogenes in pork carcasses, meat cuts, and meat products (“chorizo”, sausage and ham). Materials and methods. Stratified sampling was implemented in meat-processed produc...