Influence of the Line on Some Traits Characterizing Sperm Quantity and Quality in Boars from the Danube White Breed

A. APOSTOLOV and Y. MARCHEV
Agricultural Institute, BG-9700 Shumen, Bulgaria

Abstract

APOSTOLOV, A. and Y. MARCHEV, 2003. Influence of the line on some traits characterizing sperm quantity and quality in young boars from the Danube White breed. Bulg. J. Agirc. Sci., 9: 123–128

The investigation was conducted at the Agricultural Institute, Shumen during the period 2000–2001. Data of reproductive traits of young boars from the Danube White breed were analyzed. The study comprised 396 ejaculates to qualify semen and 391 ejaculates to determine sperm motility after 72 hours of preservation. The first and sixth lines exceeded the rest in semen volume, sperm concentration and dose number per ejaculate. Sperm motility after 72 hours of preservation was expressed best within third line. High phenotypic and genetic correlations were established between semen volume, sperm concentration and dose number (rp = 0.579; 0.649. rg = 0.763; 0.470). The correlations between semen volume and sperm concentration were negative (rp = –0.173; rg = –0.205).

Key words: sperm quantity and quality, phenotypic and genetic correlation