RESEARCH IN PIG BREEDING, 10, 2016 (1)
EVALUATION OF AN INFLUENCE OF USED BOAR´S BREED AND INDIVIDU-ALITY ON BIRTH WEIGHT OF PIGLETS
Sládek L., Mikule V., Válek L.
Mendel University in Brno, Department of Animal Breeding, Czech Republic
The aim of the study was to evaluate an influence of breed and individuality of used boar on birth weight of piglets. Piglets of dam breeds (Czech Large White x Czech Landrace) and sire breeds (Czech Large White – sire line, Duroc and hybrid Pietrain) were monitored in an experiment.
In all cases boars and gilts after sire breed boars they had higher birth weight than piglets after dam breed boars. Higher average birth weight of boars in comparison with gilts was determined in all studied breeds.
The highest average birth weight was determined in boars (1.90 kg) and gilts (1.67 kg) after hybrid boars of Pietrain breed, after that in offspring after boars of Duroc breed – boars 1.78 kg and gilts 1.57 kg. Offspring after boars of Czech Large White – sire line had the lowest average birth weight in sire breeds.
In dam breeds better results were reached by boars of Czech Landrace in average with average birth weight 1.44 kg in boars and 1.37 kg in gilts in comparison with offspring after boars of Czech Large White, where an average birth weight of boars 1.38 kg and gilts 1.31 kg was determined. Statistical conclusive difference on a level of importance (P≤0.001) was found among birth weights of boars as well as gilts.
Higher average birth weights were found in piglets of sire breeds in comparison with dam breeds. The highest average birth weights were reached by piglets after hybridization of Duroc boars with Czech Large White – sire line sows (1.82 kg) and hybrid Pietrain (1.82 kg). The lowest average birth weight (1.24 kg) was reached by Czech Landrace piglets. Statistical conclusive difference (on a level of importance (P≤0.001)) was found among birth weights of breeds Czech Landrace and hybrid Pietrain, Duroc, Czech Large White – sire line x Pietrain, Pietrain x Czech Large White – sire line.
Key Words: birth weight of piglets, boar, sow, reproduction