Introduction to Sperm Production in Domestic Animals

These flashcards cover key concepts related to the male reproductive tract and sperm formation, as discussed in the lecture.

What are the primary functions of the testes in domestic animals?

To produce sperm and male sex hormones, primarily testosterone.

What is spermatogenesis?

The process of sperm production that occurs within the seminiferous tubules in the testes.

What is the role of the epididymis in sperm maturation?

It is where sperm cells mature, gain the ability to swim, and are stored until ejaculation.

Why is the scrotum important for sperm development?

It protects the testes and regulates their temperature, which is crucial for sperm viability.

Name the three distinct regions of a sperm cell and their functions.

The head (contains the nucleus and acrosome), midpiece (contains mitochondria for energy), and tail (propels sperm forward).

What do the accessory glands contribute to sperm during ejaculation?

They secrete fluids that provide nutrients, lubrication, and alkaline substances to protect sperm and aid in motility.

What is the ductus deferens and its role during ejaculation?

The ductus deferens, or vas deferens, is a muscular tube that transports sperm from the epididymis to the urethra during ejaculation.

What does the penis do during mating in male domestic animals?

It delivers sperm into the female reproductive tract.

What factors influence the volume of ejaculate among different species?

The amount of ejaculate varies; for instance, a ram produces 0.8 to 2 milliliters, while a boar produces 150 to 300 milliliters per ejaculation.

What happens to sperm after it is ejaculated into the female reproductive tract?

The sperm navigate the cervix, uterine body, and horn to reach the oviduct, where fertilization may occur if an ovum is present.

How do breeding programs benefit from understanding male reproductive health?

They optimize reproductive success and maintain genetic diversity in livestock and companion animals.

What are two techniques used to manage and enhance male fertility?

Artificial insemination and reproductive health evaluations.