Content area
Full Text
Keywords: bacteria, pig, semen extender, sperm quality
Introduction
Bacterial contamination is frequently found in boar semen in pig industry all over the world. The numbers of bacterial contamination depend on the hygiene during semen collection and processing. Bacteriospermia is frequently observed in freshly extended porcine semen and can cause detrimental effects on the semen quality and longevity (1). It has been demonstrated that contamination of bacteria in the boar semen for over 104 CFU/ml can produce sperm agglutination (2). Bacterial contamination in the boar semen can also negatively affects the litter size at birth in sows (3). Although most commercial semen extenders contain antibiotics, it may not be enough to eliminate all bacterial contamination from the boar semen. Thus, bacteria can be increased during cool storage at 16°C, which may affect the sperm quality. The objective of the current study was to evaluate the efficacy of the boar semen collection extender (Dicol®) on cool storage boar semen.
Materials and Methods
Animals and management: A total of 7 ejaculates from 7 boars were included. The semen was routinely collected by using gloved hand...