WebIt's important to determine the number of breeding pairs you need to supply sufficient mice for your experiments. The Breeding Colony Size Planning Worksheet (pdf) is a very useful resource.. Mating combinations. Mating pair- one male, one female; common for strains with good fecundity.Leave pair together continuously, whenever possible, to maximize … WebTags are relatively heavy for weanlings and may cause young mice to tilt their head even when the proper sized tag is applied or cause the ear pinna to fold over if placed too high. Some strains are prone to scratching the tagged area which can lead to infection, hematomas, and granulomas.

Guidelines for Genotyping Laboratory Mice and Rats - Research

WebGuidelines for Genotyping Laboratory Mice and Rats. Revised: 2/28/22 3 . b. In the mouse, the distal tail is completely ossified and innervated between 17-21 days of age. Thus, tail sampling is recommended in mice and rats less than 3 weeks of age to avoid undue stress and discomfort to the animals. The optimum age at which to perform WebEar punches are the easiest, super quick to do and really easy to see. With this method our research assistants and animal techs survey the mice much faster (no restrain need) and don't have to read tiny number tags that can also increase risk of mistaken identity. All in all, our lab is ear punch all the way 😅. high scythe

Article - Standard on Rodent Identifi... - University of North …

WebColored ear tags eliminate the need to interpret IDs and allow lab technicians to visually differentiate cage mates or dosing groups without scanning. Data collection becomes much easier and more cost-effective. Colored mouse ear tags also allow technicians to identify mice within a cage without disturbing the animals, which can be useful for ... Several systems are available for individually identifying research mice. Depending on the circumstances, either temporary or permanent methods may be used. See more Several methods are particularly well suited for identifying cage mates. A felt tip marker may be used for marking an ear or tail; such marks usually disappear in 1-2 … See more Methods for permanently identifying mice include ear punching, ear tagging, tattooing, and subcutaneously implanting a numerically coded microchip. Ear … See more Resources for instruments Following are the names and addresses of some companies that sell animal identification tools. Other companies may also sell them. Ear … See more WebAnimal researchers use WPI ear punches and ear tags as a method of identifying individual research animals in laboratories. WPI identification ear tags are perfect for rats, mice, … high scvo2