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Spermatogenic Activity and Sperm Traits in Post-Pubertal and Adult Tomcats (

机译：Pubertal和成人Tomcats中的精源活性和精子性状（

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Tomcats are considered to be adults at 1 year of age, although many reach sexual maturity at an earlier age. Nevertheless, we still know little about whether the spermatogenic activity and sperm quality of mature under one-year-old tomcats differ from those of tomcats that are over one-year-old. This study aims to evaluate the spermatogenic activity, sperm traits, and their relationships in mature tomcats at two different ages. Sixteen tomcats showing complete spermatogenesis and spermatozoa in their epididymal caudae were used and classified according to their age as post-pubertal (<1 year old) or adult (˃1 year old). Our results show that adult cats have higher epididymal sperm concentration and lower coefficient of variation in sperm head width and ellipticity than post-pubertal cats. However, they do not differ in their testicular and epididymal mass, spermatogenesis, and sperm traits such as motility, mitochondrial activity, morphology, morphometry, as well as plasma membrane, acrosome, and DNA integrity. Reduced intra-male variation of sperm head ellipticity is associated with higher testis mass, epididymis mass, and sperm concentration. Interestingly, low intra-male variation in sperm head size is associated with increased Sertoli cell function and reduced post-meiotic germ cell loss. These findings increase our knowledge about feline reproductive physiology and provide new insights into the functional significance of low intra-male variation in sperm size and shape in tomcats.
机译：Tomcats被认为是1岁的成年人，尽管许多人在早期的年龄达到性成熟。尽管如此，我们仍然了解一岁的大墓下成熟的精子活性和精子质量是否与一岁以上的大爪子不同。本研究旨在评估两年不同年龄的成熟尾巴中的精子源性活性，精子特征及其关系。在其附睾尾部显示完整的精子发生和精子的十六个Tomcats被使用并根据其年龄作为普及塔尔后（<1岁）或成人（˃1岁）进行分类。我们的研究结果表明，成年猫具有较高的附睾精子浓度，并且比普国特猫的精子头宽度和椭圆形较低的变异系数。然而，它们在睾丸和附睾质量，精子发生和精子特征中没有差异，例如运动，线粒体活性，形态，形态学以及质子膜，副骨骼和DNA完整性。细胞头椭圆形的雄性内变化降低与睾丸质量，附睾质量和精子浓度更高。有趣的是，精子头部尺寸的低雄性内变化与血清细胞功能增加和减少后胚芽细胞损失有关。这些调查结果增加了我们对猫生殖生理学的知识，并提供了新的洞察术中雄性尺寸和造型中较低的雄性变化的功能意义。

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