info:eu-repo/semantics/article
Factors associated with the production of 30 or more piglets per sow per year in southeastern Mexico
Autor
JESUS RICARDO AKE LOPEZ
JOSE CANDELARIO SEGURA CORREA
JUAN GABRIEL MAGAÑA MONFORTE
RUBEN CORNELIO MONTES PEREZ
RONALD HERVE SANTOS RICALDE
Institución
Resumen
The annual pig production is critical for producers managing commercial farms. Thus, the objective of the study was to determine the effect of some environmental factors on the production of 30 or more piglets per sow per year in Southeastern Mexico. Information from 2008 to 2012 of four commercial farms located in Yucatan, Mexico were used. Data on sows producing 30 or more piglets born alive per year (PB/S/Y, n=7471) and sows producing 30 or more weaned piglets per year (PW/S/Y, n=7181) were code as 1, otherwise as 0. Data were analyzed using binary logistic regression. The statistical model included the effects of farm, year of first farrowing, season of fist farrowing, reason of culling, number of pigs born alive at first farrowing, productive lifetime and age at first farrowing.
The frequencies of sows with 30 or more PB/S/Y in farms 1 to 4 ranged from 4.30 to 19.6%, and for PW/S/Y the frequencies ranged from 1.24 to 14.4%. Farm, year, reason of culling, number of piglets born at first farrowing, productive lifetime and age at first farrowing, were all associated with the production of 30 or more PB/S/Y, but for PW/S/Y the number of piglets born at first farrowing and age at first farrowing were not important sources of variation. Farm differences for PB/S/Y and PW/S/Y indicates differences in some management practices. Reducing the reasons of culling by reproductive problems, and increasing the care of early first parity sows with large liter sizes may increase productivity in the farms.