How Do Rat Waters Break?
WouterRats’ gestation period is three weeks, and their pregnancy is completely undetectable until the final week. During the final week of pregnancy, pregnant rats will lose their hair around the nipples and be more aggressive towards their cage mates. However, pregnant rats will not show any of the other signs of heat, such as vibrating ears or showing interest in the scent of males.
Blood is collected from various sites in the rat, including the tail vein and tail artery. A small nick can be made on the side or base of the tail, and the blood can then be drawn using a fine gauge needle. Alternatively, a syringe or butterfly catheter may be used instead of a needle.
Rats’ circulating blood volume ranges from fifteen to thirty-five ml, which is about five to seven percent of the animal’s weight. However, the volume may be much smaller in older and obese animals. In healthy rats, it is possible to withdraw ten percent of the circulating blood volume once without any adverse effects. This procedure is safe and can be repeated every three to four weeks.
To treat a rat, you need to make sure the area where the rat is residing is moistened. A humidifier, shower in the bathroom, or boiling water can help to provide the needed moisture. However, you should not direct the rat towards the steam as it can burn his or her lungs. If you have a garbage disposal, it is best to avoid using it and clean it regularly.
