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showed significant reductions in testes weight and total sperm head counts compared with control animals. It is concluded that this testicular sperm head counting technique is a useful tool in the detection of selective adverse effects of chemicals upon testicular sperm but requires further evaluation.
Until the validity and reproducibility of the sperm penetration assay have been established, this expensive test should probably not be used to evaluate infertile couples.
This study revealed that inherent errors abound when different counting chambers are used for sperm count.
Sperm expenditure was constrained without the costs involved in active spermatogenesis, and depletion of non-sperm components likely regulate sperm quantity loaded in spermatophores.
The woman's age and number of sperm present for insemination are significant factors influencing cost-effectiveness.
We conclude that accessory sperm count can be used for the detection of compensable defects in sperm and is a valid parameter for assessing sperm fertilization capacity.
The implementation of scientific and technological advances could benefit the simultaneous examination of sperm phenotype and sperm function, demonstrating that sperm morphometry could be a useful tool for sperm assessment.