Instruction
1
The easiest way to determine the age of the rat lies in its weighting. The dependence of the weight of the rats from their ageand differs in males and females.
Male 2 months old has below average weight from 120 g to 150 g, the average weight from 160 g to 220 g, the highest weight of 230 g to 260 g.
Male 3 months has a weight below the average from 210 grams to 240 grams, the average weight from 250 g to 310 g, high weight from 320 g to 360 g.
The male at 4 months has a weight below the average from 310 g to 330 g, the average weight from 340 g to 410 g, the highest weight of 420 g to 450 g.
The male is 5 months has a weight below the average from 410 g to 440 g, the average weight from 500 g to 530 g, the highest weight of 230 g to 260 g.
Male 2 months old has below average weight from 120 g to 150 g, the average weight from 160 g to 220 g, the highest weight of 230 g to 260 g.
Male 3 months has a weight below the average from 210 grams to 240 grams, the average weight from 250 g to 310 g, high weight from 320 g to 360 g.
The male at 4 months has a weight below the average from 310 g to 330 g, the average weight from 340 g to 410 g, the highest weight of 420 g to 450 g.
The male is 5 months has a weight below the average from 410 g to 440 g, the average weight from 500 g to 530 g, the highest weight of 230 g to 260 g.
2
The female in 2 months has a weight below average from 120 g to 150 g, the average weight from 160 g to 210 g, the highest weight from 220 g to 250 g.
The female at 3 months has a weight below the average from 170 g to 200 g average weight from 210 grams to 250 grams, the high weight of 260 g to 290 g.
The female in 4 months has a weight below the average from 210 grams to 240 grams, the average weight from 250 g to 270 g, high weight from 280 g to 310 g.
Female 5 months old has below average weight from 250 g to 280 g, the average weight of 290 g to 310 g, high weight from 320 g to 350 g.
The female at 3 months has a weight below the average from 170 g to 200 g average weight from 210 grams to 250 grams, the high weight of 260 g to 290 g.
The female in 4 months has a weight below the average from 210 grams to 240 grams, the average weight from 250 g to 270 g, high weight from 280 g to 310 g.
Female 5 months old has below average weight from 250 g to 280 g, the average weight of 290 g to 310 g, high weight from 320 g to 350 g.
3
The scheme is quite approximate, so before signing, find out what complexion were the parents of rats, and conditions of keeping and feeding the animal.Experienced owners of rats for the visual inspection determined the approximate age of the animals. In young rats, the coat should Shine, fit snugly to the body, body fat is evenly distributed throughout the whole body. An old animal is more rare and a dull coat, thin fat layer on the back is the spine even under conditions of good feeding, the skin on the tail is coarse and rough.
4
If the rat in old agee, she, as a rule, have problems with your teeth, the incisors grow too much. Oldies-rats suffer from weakness of the limbs, they have reduced motor activity, they are looking for warmth. In the incisors of rats there are no roots, so they are constantly growing. The front surface of the incisors is covered with durable enamel, and the back cover no tools out there falling faster sharpening of the teeth takes the form of bits.
