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What is the average food passage time for an egg-laying hen?

  1. 1.5 hr.

  2. 2.5 hr.

  3. 3.5 hr.

  4. 4.5 hr.

The correct answer is: 2.5 hr.

The average food passage time for an egg-laying hen is approximately 2.5 hours. This timeframe is crucial because it reflects how efficiently hens process their feed, which directly impacts their health, egg production rates, and overall productivity. During this period, the hen's digestive system breaks down the feed into nutrients that can be absorbed into the body. A shorter food passage time can indicate efficient digestion, ensuring that the hen can convert food into energy and eggs effectively. Additionally, this average time allows for sufficient nutrient absorption, which is vital for the production of quality eggs. Understanding the average food passage time also helps poultry producers manage feeding schedules and monitor the health of their flocks. If the passage time deviates significantly from this average, it may suggest potential health issues related to digestion or nutrition that would require further investigation.