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Table 1 Physiological characteristics of Xenopus laevis female frogs from two different batches

From: Unlaid Xenopus eggs degrade by apoptosis in the genital tract

Batch

Young frogs

Ageing frogs

Parameter

  

Age

2 y.o.

4-4.5 y.o.

Average body weight

72 g

98 g

Start of egg laying*

within 11 h

within 12 h

Volume of laid eggs**

~ 15 ml

~ 20 ml

Healthy eggs

>90%

>90%

Number of animals

11

15

  1. * time after hCG administration.
  2. ** packed volume of jelly layer-coated eggs.