ARPAS Practice Exam 2025 – Complete Guide to Test Preparation

Growth hormone in cattle is commonly referred to as somatropin. This is a protein hormone that is produced by the anterior pituitary gland and plays a crucial role in growth, development, and metabolism. It stimulates growth and influences various aspects of protein, fat, and carbohydrate metabolism in animals.

Somatropin promotes the growth of bones and tissues, leading to increased body weight and improved feed efficiency, which are essential factors in livestock production. The use of somatropin in cattle can enhance milk production and improve overall health, making it a significant component in animal science and agriculture.

The other options represent different hormones with distinct roles. Insulin is primarily responsible for regulating glucose levels in the blood, leptin is involved in regulating energy balance and fat storage, and thyroxine is a thyroid hormone that regulates metabolism. Each of these has important functions but does not relate to the growth-promoting effects associated with somatropin in cattle.