宠物犬鉴赏宠物犬 (27).pdf

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1、动物科学技术学院动物科学技术学院21.dogs pregnancy1.dogs pregnancy 1.1 Gestation：60(5863)days 1.2 Pregnancy performance：behavioral changesIn early stages：no behavioral changesIn the mid-gestation：tend to be slow,cautious,docile,quiet,sleepy,and prefer to stay in a warm and quiet place.During late pregnancy:prone to

2、fatigue,urinate frequently.near delivery:start nesting After 50 days of gestation,fetal movement could be noticed from the ventral side.Care During Pregnancy and Delivery3appetite changes during 15 to 20 days of pregnancy:show a poor appetite,about one third of pregnant dogs have pregnancy reactions

3、 as vomiting that lasts about 1 to 2 days.during 30 to 35 days of pregnancy increased appetite.After 55 days of pregnancy:appetite and by the day of delivery,they have no appetite.the changes in abdominal circumference 35-40 days of pregnancy:abdomens grow rapidly.55 days of pregnancy:the abdominal

4、circumference reaches its maximum and remains so until delivery.4weight changes gain weight rapidly after 30 days of pregnancy,The larger the size of litters,the faster the weight increases.the changes in vulva at 2 to 3 days before delivery,the vulva is significantly swollen,flaccid,soft,congested,

5、and oedematous,and it will return to normal after delivery.Hours before labor,the female dogs cervix begins to dilate,and secretes a thick,yellow,opaque mucus.5the changes in mammary glands There are no obvious mammary gland changes in early pregnancy.the glands will begin to develop after one month

6、 of pregnancy.The glands expand,the breasts are drooping,the teats are elastic and milk can be squeezed from the teats near delivery.61.3 Care for female dogs during pregnancy Make sure the dog eats regularly Must not be given bad or moldy foods or too cold food or drinking water.Female dogs should

7、exercise every day kept clean,swept and disinfected frequently Also make sure they are dry,warm and well ventilated special attention should be paid to their hygiene of teats and private parts.72.the delivery of female dogs2.1 preparation for delivery ensure hygiene and maintain good air circulation

8、 hips and breasts with clean water and cut off the long hair around the teats build whelping boxes buy special boxes from pet stores make simple ones with cardboard boxes or wooden boards prepare the delivery kits scissors,gauze,cotton balls,70%alcohol,5%iodine,0.1%bromogeramine,etc.8 2.2 signs of d

9、elivery a few days before delivery,the female dogs appetites begin to decline.two days before delivery,mother dogs are anxious,and prefer to dig the ground with front paws,walk back and forth and in circles in dark corners.several days before delivery,the pelvic ligaments will become soft and loose.

10、breasts rapidly develop and become strong Two days before delivery,a small amount of clear milk labia gradually become soft,swollen and enlarged before delivery,the temperature begins to drop.9 3.the process of deliveryAccording to the labor contraction,abdomen contraction,changes in the genital are

11、a and body performance,the delivery process can be roughly divided into three stages:uterine opening stage(312h),fetus delivery stage(612h)and afterbirth discharge stage(515min).10犬的分娩过程11犬的分娩过程12犬的分娩过程13犬的分娩过程14犬的分娩过程154.artificial delivery and notes（1）The midwives need to keep themselves safe（2）Pr

12、ovide suitable places for dogs delivery（3）Observe carefully，find problems and solve them in time（4）Raise the awareness of asepsis（5）prevent mother dogs from biting umbilical cords when special personnel are helping delivery（6）Completes the recording.16母犬人工接产过程17母犬人工接产过程18Thats all for today.Thats all for today.Class is overClass is over