Utheria

Sexual maturity age

Sexual maturity is the age when individuals are first physically capable of reproducing (recorded by a first estrous or first spermatogensis). This is rarely recorded accurately and definitions are dependent on the sex of the individual. The data must be qualified using the sexual maturity age definition (‘SMA Defn’) field. The options given are in order of preference:

Sexual Maturity Age Definitions
• Physically Sexually Mature (males and females)
• Age at First Estrus (females only)
• Age at Spermatogenesis (males only)
• Age at First Mating (males and females)
• Age at First Pregnancy (females only)
• Age at Testes Descent (males only)
• Unspecified

Generic value types: Data Value, Data Range, Measure, Sample Size, Captivity Status, Sex, Units and Source Type.