Performans bakalan yang dilahirkan oleh induk babi yang diovulasi ganda dengan PMSG dan hCG sebelum pengawinan

Abstract

This research was conducted to study the effect of superovulation prior to mating on gilts reproduction performance. Sixty gilts were divided into two groups namely 1) gilts without superovulation (control group) and 2) gilts with superovulation (superovulated group). Once the gilts showed a standing heat symptoms, the boar was introduced into the pig pen to mate the gilts. During the study, the pregnant gilts were kept together in postal pens and two weeks before farrowing each pregnant gilt was then placed in 2.5 x 3.5 m2 individual cages equipped with feeding and drinking devices. A Completely Randomized Design (CRD) was used in the first phase of study, consisting of two treatments with 30 replicates of each. Data were analysed based on the mathematical model procedures, Yij = μ + αi + εij. All data were then analysed using variance. The results showed that the superovulation treatments significantly (P <0.01) shortened gestation period (GP) in superovulated gilts), increased the body dimension (BD), increased the front leg high of birth (FLHB, increased the rear leg high of birth (RLHB), increased pig weight at birth (PWAB), and increased the birth weight per, increased the daily sows feed consumption (DSFC), increased the sows milk production per suckling (SMPPS), increased the daily milk production (DMP), increased the milk production per lactation (MPPL), increased the piglet gain weight (PGW), reduced the mortality, increased the weaning weight per litter (WWPL), and increased litter size at weaning (LSW). But the superovulation treatment was just significantly (P <0.05) improved sow body weight (SBW), increased the litter size born alive (LSBA), increased the the birth weight per litter, increased pig weigth at birth (PWAB), whereas the superovulation did not significantly affect (P>0.05) the litter size dead born (LSDB) and the litter size at birth ( LSAB). It is concluded that the superovulation treatment in the gilts before mating can improve sows reproductive performances through endogenous secretions of hormones of pregnancy, which is followed by the improvement of pigs weigth at birth, litter size at weaning, mortality, consumption of rations, and the sow milk production.