in the United States. Established in 1903, under the presidency of Her Majestyâs Minister at Washington, D.C., W.A.F. Baron Gevers, the chamber has promoted commerce between the Netherlands and the U.S. for more than a century.
Complete Physical Maturity: Mice are not done growing until they are between 3 and 5 months of age, depending on the line. Mice should NEVER be bred until they are at least 12 weeks age. If you don't know the line really well, wait until at least 12 weeks, if not longer.wild mice live longer.. around 5 years in captivity, though only around 6 months in the wild due to predators and environmental factors). Maturity: 4 - 8 weeks of age, varying from line to line and mouse to mouse.
Well baby mice will not have a gestation period-mice won't be mature enough to breed until they are about 4-6 weeks of age. But once they do get pregnant it is about 21 days.The weaning age (time at which the babies are removed from the mother) is also about 21 days.tech Â· 9 years ago. Thumbs up.eport Abuse. Well baby mice will not have a gestation period-mice won't be mature enough to breed until they are about 4-6 weeks of age. But once they do get pregnant it is about 21 days. The weaning age (time at which the babies are removed from the mother) is also about 21 days. tech Â· 9 years ago.