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Table 1 Mean testicular length and number of alpacas by age group (Experiment 1, in vivo measurements)

From: Testicular length as an indicator of the onset of sperm production in alpacas under Swedish conditions

Mean length (cm)

12–23 months

24–35 months

36–48 months

Total

<3

8

0

0

8

3–3.9

14

8

0

22

>4

8

24

10

42

Total

30

32

10

72