Poultry Judging Practice Test

Which physiological mechanism aids in poultry reproduction by influencing ovum maturation?

1. Endorphins

2. Luteinizing hormone

3. Insulin

4. Testosterone

The correct answer is: Luteinizing hormone

Luteinizing hormone plays a crucial role in poultry reproduction, particularly in influencing the maturation of ova (the female reproductive cells). This hormone is produced by the pituitary gland and is part of the larger endocrine system that regulates reproductive cycles. In hens, luteinizing hormone stimulates the ovaries to produce mature ova, leading to ovulation. This process is essential for successful reproduction, as it directly affects the number and quality of eggs produced. While endorphins, insulin, and testosterone also have important roles in various physiological processes, they do not specifically influence the maturation of ova in poultry the way luteinizing hormone does. Endorphins are primarily associated with pain relief and pleasure, insulin primarily regulates glucose levels, and testosterone is more significant in influencing male reproductive functions. Thus, luteinizing hormone is the key factor in the maturation of ova in poultry, making it the correct choice in this context.