The integrity of sperm chromatin in young tropical composite bulls

作者: M.R.S. Fortes , R.G. Holroyd , A. Reverter , B.K. Venus , N. Satake

DOI: 10.1016/J.THERIOGENOLOGY.2012.02.007

关键词: Male infertilityAndrologyDNA fragmentationFragmentation (cell biology)SemenElectroejaculationSemen analysisReproductionBiologySperm

摘要: Sperm chromatin fragmentation is associated with subfertility, but its relationship age progression in young bulls poorly understood. The objective was to assess sperm during the early post-pubertal development of 20 tropical composite bulls, using a structure assay (SCSA) and sperm-bos-halomax (SBH). Bulls were subjected bull breeding soundness evaluation (BBSE) at mean ages 13, 18, 24 mo. Traits measured included liveweight (WT), body condition score (BCS) scrotal circumference (SC). Semen samples collected by electroejaculation assessed for mass activity (MA), motility (Mot), concentration (conc), morphology fragmentation. Concentration (r = 0.34, P 0.0076), Mot 0.36, 0.0041) percentage morphologic normal (percent (PNS); r 0.31, 0.0132) positively correlated age. proximal droplets (PD) negatively -0.28, 0.0348), whereas neither SCSA nor SBH results significantly PNS -0.53, < 0.0001), head abnormalities 0.68, 0.0001) intact (Int) -0.26, 0.0456). In summary, assessment fragmentation, could be equally 18 or mo age, as did not vary (c) 2012 Elsevier Inc. All rights reserved.

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