Find the color of the female along the left hand side. 1.

For instance a white rat that is genetically an albino may look just like a pink eyed white rat that is not albino, but whose color has been faded out from dilutions. Genetics. Age is not such an important consideration for males when rat breeding. The Dog Breed Calculator is based on a series of factors pertaining to your personal preferences and lifestyle to offer the most reliable result and find the best Dog Breed for you: The Appearance and Behaviour of the Dog… Dog Size: Would you prefer a small, medium or large dog? This urine contains a sticky molecule called lipocaliene.

Breeding and reproduction in rats can decrease because of factors such as age, malnutrition, abnormal light cycles, cold environment, cysts on the ovaries, tumors, and inadequate nesting material. Selfs (aa) Black - aa - darker color and less silvering or rusting is achieved by fewer dilutes. Table 2. Draw lines down the column from the male’s color, and across the row from the female’s.

Use C57BL/6 F1 mice to set up new breeding cages (see mouse breeding suggestions above). Males can be fertile into old age. We prefer (C57BL/6J X DBA/2J)F1 animals. Use this app to calculate when your mouse or rat will give birth. Current Buffer: How long the baby will last with a full inventory of Raw Meat 00:00:00: Food to Fill: The amount of Raw Meat the baby's inventory can currently hold 0: Hand Feed For: How long from now until the baby can survive to juvenile on a full inventory, and the maturation at which this occurs 02:37:07 (4.9%) Food to Finish: Amount of food required in the baby's inventory to reach juvenile Others need a suitable area/environment to breed successfully. The Brown Rat Pregnancy Calculator is a much simpler process to use than the traditional Rat Gestation Chart where you had to count the days until your rat’s due date. Follow the breeding females for copulation plugs. By Litterattery.

Since it is such a short gestation period, they can have up to 5 litters a year. Commonly used rat strains and stocks.

Important Guidelines in Using Our Rat Pregnancy Calendar Calculator In these packs they are all family. Where they intersect, is the color you should get in the litter.

Perfect for veterinarians, rodent breeders, animal husbandry students, and animal enthusiasts. Superior Quality Pedigreed Rats Bred for Health, Longevity & Wonderful Personalities Since 2004! If the homozygous mutant does not breed and the congenic strain must be developed by using intercross matings, the estimated number of mice increases to 1,200. That number assumes a breeding colony of 10-12 breeding pairs, replacement of breeders, and progeny for phenotyping and genetic linkage.