I get a lot more production in the summer than in the winter. Wait a couple of months and see if production goes up considerably. I understand that day length has a lot to do with it. Also, when kept just a little warmer, more energy can go into producing babies than keeping warm. My swiss websters produce great--I usually get litters in the 13-18 range (in summer) and even had one as large as 28! (very small pinkies, though). As long as they don't get too hot and the males go sterile, a little warmer works better for me!



On another note, lab mice are raised in sterile conditions--thus, they often have disease problems when exposed to the outside world. Their immune systems have never had to deal with ANYTHING before!



A guy I used to work for bought and sold A LOT of mice. When he couldn't get them from his usual source, he would buy surplus lab stock. There were always a lot of losses with these because they couldn't handle the verious pathogens that were around.



Rodney

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