Assistant Laboratory Animal Technician (ALAT) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 575

The female rat's estrous cycle lasts about how many days?

2-3 days

4-5 days

The female rat's estrous cycle typically lasts about 4 to 5 days. This cycle consists of several phases: proestrus, estrus, metestrus, and diestrus. Each phase has specific hormonal and physiological changes that prepare the rat for potential mating and reproduction. The duration of the estrous cycle is important in laboratory settings for breeding programs and when planning studies that involve timing of hormonal changes or behavior related to reproduction. Understanding this cycle helps researchers optimize breeding schedules and ensure the healthy management of breeding colonies.

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6-7 days

8-9 days

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