Poultry Judging Practice Test

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Study for the Poultry Judging Test with interactive quizzes. Enhance your skills with multiple choice questions including hints and explanations. Prepare for your exam and excel!

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Which hormone is responsible for regulating blood calcium levels in poultry?

Growth hormone
Parathyroid hormone
Insulin
Estrogen

The correct answer is: Parathyroid hormone

The hormone responsible for regulating blood calcium levels in poultry is parathyroid hormone. This hormone plays a crucial role in maintaining calcium homeostasis, which is vital for numerous physiological functions including muscle contraction, blood coagulation, and bone health. In poultry, parathyroid hormone is produced by the parathyroid glands and works by increasing the release of calcium from bones, enhancing the absorption of calcium in the intestine, and promoting the reabsorption of calcium in the kidneys. This balanced regulation is particularly important in poultry, especially during periods of rapid growth or when eggs are being produced, as calcium demands increase significantly during these times. While growth hormone, insulin, and estrogen have their respective roles in metabolism, glucose regulation, and reproductive functions, they do not have a direct influence on blood calcium levels in the same manner as parathyroid hormone. Thus, the regulation of calcium is specifically and effectively managed by parathyroid hormone, making it the correct answer in this context.