The signs of pregnancy in Husky female dogs appear about one week after mating. The specific manifestations are: the vagina of the pregnant female dog will shrink rapidly, and pregnancy reactions such as vomiting and loss of appetite may occur at three or four weeks of pregnancy. However, during the examination, due to the interference of the corpus luteum, it is impossible to judge from the above phenomena whether it is a true pregnancy or a false pregnancy. Therefore, a more scientific method must be used to make a diagnosis. In addition, 20-30 days after breeding, a veterinarian can be asked to take a blood sample test or use ultrasonic diagnosis and other methods for early diagnosis.

There are many methods for diagnosing pregnancy in female dogs. Currently, the more commonly used methods include external observation, palpation examination, ultrasonic detection, hematology examination, urine examination, etc.

1. External inspection method If you are an experienced breeder, you can use the intuition of local appearance inspection to make a judgment. When a female dog is pregnant, her reproductive system is frequently active in order to cultivate new life, and the vaginal secretions will also increase. At this time, the female dog will lick it frequently. Dogs whose labia shrink sharply 2-3 days after mating are more likely to become pregnant than dogs who continue to be in heat. The labia of a pregnant dog shrink and are not like the state before estrus. After pregnancy, due to accelerated blood circulation, the vagina will appear to bleed slightly. The body temperature here will also be slightly higher than usual, becoming soft and plump, with a small amount of bleeding. Mucous discharge. About a week after mating, the female dog’s vagina begins to shrink and become soft, and a small amount of dark brown fluid can be seen being discharged. During the 2-3 weeks of pregnancy, the breasts begin to gradually enlarge, the appetite increases greatly, the coat is shiny, the temperament is docile, the movements are slow, stable and cautious.

On the 20th to 30th day of pregnancy, the mammary glands of pregnant dogs protrude, the breasts swell, and the nipples turn pink. In the first half of pregnancy (about 25 days), female dogs sometimes have a loss of appetite, some have a partial eclipse, some female dogs have an increased appetite, but some dogs become abnormal, such as eating a lot in the morning but no appetite at night. , and vomiting occurred. In the second half of the pregnancy (about one month), the mammary glands gradually swell, the breasts sag, the nipples become elastic, they feel warm when touched with hands, and even milk can be released. This is due to the active mammary glands during pregnancy. The lower abdomen also gradually swells, and strong throbbing can be felt. Rapid weight gain and increased urination. The female dog at this time is more likely to be tired than before pregnancy, and her movements when lying down are also different from usual. She looks tired and lies down as if she is about to fall down. After 50 days, "fetal movement" can be seen on the ventral side, and fetal heart sounds can be heard with a stethoscope on the abdominal wall.

The disadvantage of the external observation method is that inexperienced breeders cannot judge early whether the bitch is pregnant, because pseudopregnant bitches will also have many of the above-mentioned pregnancy-like reactions, and by the scheduled delivery date, the vomiting and other symptoms will all disappear, and the belly will also appear. Like a deflated rubber ball, it is a huge disappointment. As for external changes, you can also use the method of measuring weight or chest circumference to determine pregnancy. Start before mating and insist on regular measurements. Timing means that the measurement should be scheduled at the same time every day or every other day, for example, at 5 p.m. every day, when the dogAfter exercise and excretion, and before eating and drinking water for dinner, measure your weight at the same time and under the same circumstances. If you are pregnant, your pet dog will definitely gain weight day by day. The same goes for measuring chest circumference. Record the bust size before mating. After mating, measure the chest circumference at the same time as measuring the weight. Pay attention to determine the measurement position and fix it on which rib.

2. Palpation examination method: When the female dog is about 20 days pregnant, the uterus begins to become thicker. You can clearly feel the thickening of the uterine diameter by touching the abdominal wall, but this requires someone with considerable experience to make a more accurate diagnosis. In the fourth week after breeding, touch the location of the uterus on the female dog's abdomen with your hands. The pregnant female dog can feel an embryo as big as an egg. After 25 days of pregnancy, the fetus can be touched (such as an egg-sized, elastic flesh ball). When touching, be careful to distinguish it from inelastic feces. When touching, slide your hands back and forth on the outside of the abdominal wall above the last two pairs of nipples. Be careful not to use excessive force to avoid miscarriage. )

3. Ultrasonic detection methods currently include Doppler instrument, A-type ultrasonic instrument and B-type ultrasonic instrument. Doppler examination can be used to detect the heartbeat of fetal dogs at 19-25 days of pregnancy. As the fetal dog develops, its accuracy increases, with an accuracy rate of 85% from 36 to 42 days of pregnancy, 100% accuracy from 43 days to the end of pregnancy, and 100% accuracy if not pregnant. Female dogs that are too small have a slightly higher misdiagnosis rate due to the beating of the abdominal arteries. A-type ultrasonic examination can be used to diagnose pregnancy after 18-20 days. When pregnant between 32-60 days, its accuracy is 90%, and the accuracy when not pregnant is 85%. Signals from a bladder filled with urine should be distinguished when using this test. B-type ultrasonic inspection is more effective than Doppler and A-type ultrasonic inspection. Its advantage is that it can detect 18-19-day-old fetal dogs, and can even identify the gender, number, and life and death of fetal dogs.

4. X-ray examination method If you want to use X-ray irradiation to measure the fetus, it must be after the female dog is 7 weeks pregnant, when the bones of the fetus have grown enough to be imaged. On the 30th to 35th day of pregnancy, the shape of the uterus can be seen; on the 49th day of pregnancy, the fetal dog's skeletal changes can fully show the contrast. When a few female dogs undergo X-ray examination on the 40th day of pregnancy, the vertebrae and ribs of the fetal dog are clearly visible. When using this method for examination, 200-800 ml of carbon dioxide must be injected into the abdominal cavity according to the size of the female dog. In addition, X-rays may also have detection errors due to interference from factors such as the direction of illumination, so they are not a foolproof inspection method.

5. Blood test method: The blood components of the female dog change during pregnancy. Based on the changes in these parameters, it can be judged whether the female dog is pregnant, and pregnancy and pseudopregnancy can be distinguished. From the 21st day of pregnancy, red blood cells begin to decrease. By the last week of pregnancy, 70% of female dogs can reduce to 5 million/ml, the red blood cell volume decreases by 40%, and the hemoglobin ratio decreases, especially in young and improperly raised female dogs. Most; increased erythrocyte sedimentation rateAdd, to the maximum value by the time of delivery. From the 20th day of pregnancy, the red blood cell volume continues to decrease, reaching the lowest value of 30 before delivery, while it is 45 for non-pregnant female dogs. From the 21st day of pregnancy, platelets increase, reaching 500,000/ml before delivery; white blood cells increase, reaching a maximum around the 49th day, and then decrease, but when it exceeds 30,000/ml, it is abnormal. The concentration of coagulation factors increases between 28 and 42 days of pregnancy and decreases until delivery. Fiber protein increases 2-3 times during pregnancy. On the 21st day of pregnancy, the serum creatinine level dropped by 25%-33%, with an average of 0.8 (0.6-0.9) mg/L in multiparous female dogs and an average of 1.1 (0.9-1.2) mg/L in primiparous female dogs; serum gamma protein A decrease of 40%-45%, the average of multiparous female dogs is 648 (440-1220) mg/L, and the average of primiparous female dogs is 1108 (840-1460) mg/L.

6. Urine test method: 5-7 days after a dog's pregnancy, a hormone with a similar structure to human chorionic gonadotropin will appear in the urine, so the human "quick-acting pregnancy test solution" can be used to test the dog urine. Whether the fluid contains substances similar to human chorionic tuft gonadotropin. If the test is positive, the person is pregnant, and if the test is negative, the person is not pregnant. This method has a very high accuracy and can be detected about 6 days after mating.