Poultry Judging Practice Test

Which hormone is responsible for the growth and maturation of ovarian follicles?

1. Luteinizing Hormone

2. Follicle Stimulating Hormone

3. Oxytocin

4. Thyrotropin

The correct answer is: Follicle Stimulating Hormone

The hormone responsible for the growth and maturation of ovarian follicles is Follicle Stimulating Hormone (FSH). FSH plays a crucial role in the reproductive system, particularly in females. It stimulates the growth and development of ovarian follicles in the ovaries. As these follicles mature, they produce estrogen, which is essential for regulating the menstrual cycle and preparing the body for potential pregnancy. In the context of poultry and other avians, FSH enters circulation and signals the ovaries to progress through the developmental stages of the follicles, which involves not only their growth but also the selection of dominant follicles for ovulation. Understanding the function of FSH is vital in poultry management, especially if one is evaluating the reproductive health and performance of layers or breeders. In contrast, although other hormones such as Luteinizing Hormone (LH), Oxytocin, and Thyrotropin play significant roles in reproduction and metabolic processes, they are not primarily responsible for the growth and maturation of ovarian follicles. LH, for example, is more involved in triggering ovulation and the transformation of follicles post-maturation, whereas Oxytocin plays a role in reproduction and maternal behaviors, and Thyrotropin is involved in regulating thyroid function.