It isn't cold enough to keep it fresh. Mushrooms Store mushrooms in a closed paper bag in the fridge for up to one week. Don't store mushrooms in the crisper drawerâit's too moist. Onions Place onions in a perforated bag in the refrigerator for one to two weeks.
Keeping the room temperature between 72-80 degrees will ensure their comfort. Temperatures that are too high, or low, can stress the rats and lead to health problems. Laboratory guidelines for temperature are 20-26 degrees Centigrade (68-78.8 Fahrenheit). For breeding situations the recommended temperature is 24-26 degrees Centigrade (75.2-78.8 degrees Fahrenheit).
The brown rat is a rather large true murid and can weigh twice as much as a black rat and many times more than a house mouse. The length is commonly in the range of 20 to 25 cm (8 to 10 in), with the tail a further 18 to 25 cm (7 to 10 in), thus being roughly the same length as the body.Adult body weight averages 350 g (12 oz) in males and about 250 g (9 oz) in females.he brown rat can breed throughout the year if conditions are suitable, with a female producing up to five litters a year. The gestation period is only 21 days, and litters can number up to 14, although seven is common.