Depends on the breed and the individual heifer. Most heifers are sexually mature by the time they are around 15 months of age; others will be sexually mature when they are 24 months of age, like with Brahman heifers.
A cow is already sexually mature because she has already had at least one calf already.
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Females are sexually mature in three years and males are sexually mature in four years.
A cow, since a cow is a female mature bovine.
A sexually mature female bovine that has had a calf is called a cow. A sexually mature female bovine that has not had a calf is called a heifer. Heifers are also those that are sexually immature (have not reached puberty), i.e., as newborn female calves.
It takes two years for a cow to mature from calf.
A cow is already mature. She is a female mature bovine that has had a calf.However, a HEIFER will reach sexual maturity at 15 to 18 months of age. She will reach adult maturity at 3 to 4 years of age.
They are Goldfish and so they mature and breed as goldfish. They can be sexually mature at 1 year if they have been well housed and well looked after.
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In malarial infections the sexually mature parasite is found in the vector which is the Amophelus Mosquito.
Puberty is the time in which adolescents become sexually mature. Pubescence is the term meaning the time when puberty starts.
The Final Stage of a parasitic life-cycle is the stage in which it reproduces sexually. So, in the Fluke's life-cycle, the cow or human host where the larval forms grow into sexually mature adults and reproduce.
Armadillos are sexually mature at one year of age.
Dwarf and small breeds can become sexually mature as early as 4 months. Larger breeds take 6-8 months to become sexually mature. Once a buck has become sexually mature, and if he is not separated from his mother, he will breed her.