In England and Wales it is called Year 6 and the pupils are usually 10 to 11 years old. Often it is the seventh year of school; the years being called Reception, Year 1, Year 2, Year 3, Year 4, Year 5 and Year 6.
Quick Answer. According to Animals Australia, the natural lifespan of a dairy cow is approximately 20 years. The average lifespan of a beef cow is 15 to 20 months.
Question: What is the gestation period and reproductive life span of cattle? Answer: The gestation period of cattle is 283 days. Cows are first mated at 15 months and are most sexually active, and therefore most fertile, from ages 2 to 6 years.uestion: What is the gestation period and reproductive life span of cattle? Answer: The gestation period of cattle is 283 days. Cows are first mated at 15 months and are most sexually active, and therefore most fertile, from ages 2 to 6 years.