Information about how long the cow lasts for pregnancy is needed to organize proper diets and care for cattle. The period of gestation of the offspring is also called pregnancy, which lasts about the same time for each individual. A cow may start a preterm labor or it may happen that it passes the prescribed period by several days. How many days earlier or later an animal can give birth is described in detail in this article.
Factors Indicating Fertilization
A farmer needs to be sure that a cow will become pregnant after mating with a bull. This means that after mating animals, it needs to pay attention to a number of indicative factors.
First, during pregnancy, the cow increases appetite. Against the background of frequent urination, her fatigue and sweating increase.
Secondly, during this period the individual tries to keep away from the main herd. The fact is that during the carrying of a calf, the mother becomes very cautious and shy, and the slightest discomfort can provoke premature calving. Therefore, if possible, it is isolated from other cattle.
Thirdly, the pregnant cow willingly begins to eat the food that she had previously refused or eaten with less desire (it could be carrots, bran, cottage cheese).
Determination of pregnancy empirically
Signs of pregnancy can be detected independently by probing the genitals of the animal, but this procedure is not every farmer can. Therefore, in the early stages (20 days after mating), it is possible to conduct a study of the animal's urine in the laboratory of the nearest veterinary clinic.
As a rule, the pregnancy of a cow in a medical facility is determined in several ways. The veterinarian conducts a visual inspection of the animal by palpation and identifies the presence of pregnancy. In late periods, the movement and tremors of the fetus are usually very well felt.
In certain cases, the doctor may resort to examination of the genital organs using ultrasound. The method with an accuracy of 96% gives an answer to the question about the duration of pregnancy in cows.
According to statistics, in 45% of animals it lasts 280 days, in 30% of calves 283-287 days. These terms are the norm for a healthy individual. But depending on the age, diet and method of keeping pregnant cows, they may not don or replant the fetus.
Changes in the body during pregnancy
Early pregnancy of a cow is characterized by the acceleration of metabolic processes in the mother's body. How to determine the pregnancy on the external signs of the animal? If a burenka carries a calf under her heart, then the following changes occur in her body:
- cardiac muscle thickens;
- breathing quickens;
- the circulatory system is subjected to heavy loads;
- veins around the uterus thicken 3-4 times in volume.
At week 4 of the intended pregnancy, you can verify the cow’s pregnancy by collecting its urine or milk. To do this, purchase a special test in a veterinary pharmacy. Strip dipped in freshly collected milk or urine and wait about 10 minutes. Then it is necessary to proceed to deciphering the result: two strips, seen on the applicator, indicate that the individual is pregnant, and the manifestation of one stripe means that fertilization has failed.
In the third month of pregnancy, the placenta begins to actively develop in the womb, and the corpus luteum develops. By the fourth month, the animal can observe mucous discharge from the uterus. If during pregnancy, cows with mucus and blood is released, most likely, the process comes with pathologies. Find out whether there is a violation or not, help the vet.
By the fifth month, the development of all important organs of the fetus continues and a peak in hormonal release is observed in the body. How much a cow is experiencing hormonal surges can be understood by its excited state. The more active the Burenka, the more adrenaline can be released from the blood due to chemical processes taking place.
What is progesterone, and what is its role in the body of a cow? It is a steroid hormone produced by the ovaries. It plays an important role in the development of pregnancy and prevents the release of oxytocin, which provokes preterm labor. In addition, progesterone regulates sex in the female.
Conditions for the proper development of pregnancy
If a cow is a cow, then it requires a special attention from the person. To make the gestation period easy, you need to monitor the cleanliness of the room where the cow is located. The dimensions of the stall for a pregnant individual must be increased in width and length by at least 20-30 cm.
In the last months of pregnancy, cows noticeably increase energy metabolism and protein and mineral supplementation becomes necessary. Lack of products containing copper, sodium, iodine, manganese can cause calves to appear earlier than expected.
A cow should be more likely to take more time, if possible, she needs to provide a separate room for rest. In the period of pregnancy, she needs peace.
Fetal development during pregnancy
To answer the question of how much a cow bears a calf, you need to know the main phases of its pregnancy. The pregnancy of cattle takes place in several stages. The calving date depends on how long each period lasts. In the initial period of pregnancy (1-4 weeks), the fetus weighs only about 1 g, it begins to form the beginnings of the eyeballs and mouth.
By the second month the calf grows up to 8 cm in length and 8-42 g of weight. The internal organs of the calf are already formed by this time, the process of formation of the placenta is underway. A month later, the male specimens appear testes. In the female, an udder is formed. With an ultrasound, you can already see the coat.
By 6 months, the fetus reaches a certain weight: from 3.5 to 4.5 kg, and in the outer eyelid, cilia begin to appear in the emerging cattle, bristles form on the limbs. By the end of the 7th month the spine and the brain complete their formation.
At 8 months, baby teeth appear. By the end of the term, the calf gains body weight up to 40 kg, its length during this period reaches 95 cm. With such parameters of the fetus, a cow can give birth to healthy offspring without subsequent complications.
The help of a man in labor
Cow delivery is a natural process that does not require human intervention. On the question of how much time a cow can give birth, the statistics says: the duration of the Burenka's childbirth runs from 20 minutes to 6 hours.
As a rule, a cow is born one calf. It also happens that a burenka gives birth to two or three babies in a row; in this case, the delivery lasts longer, but only for a few minutes.
If the cow's labor activity lasts longer than 6 hours, what does this mean? Such a protracted process may indicate improper presentation of the fetus and it is called pathology during childbirth.
Sometimes it is required to give first aid to a newborn. For this purpose, mucus is removed from his airway. In this case, the baby's head goes down, and the body, on the contrary, rises to the top. In this case, the calf should be sprayed with warm water and then, if necessary, go to artificial respiration.
Relief of labor
If a cow has a narrow vagina or birth canal, then the process of resolution from the fetus is very problematic. In this case, the farmers organize the following actions: when the head of the newborn appears, slightly push the vagina and tighten the baby’s body by the front legs. Having made the girth above the upper joint, alternately tighten the limbs, thereby facilitating the calf's exit.
How many months does a cow go pregnant? The norm is considered to be the birth of a calf after 9 months. But just like a person, a representative of cattle can be resolved from the fetus a few days earlier. It happens that a burenka has moved a fixed period of time for several days. Then it is advisable to show her to the veterinarian in order to exclude adverse generic consequences.
How many days can a cow's pregnancy last? Usually, the Burenka perezhazhivaet if preparing to give birth to a bull, as well as due to poor nutrition. With a prolonged period of pregnancy lasts 285 plus 1-15 days. Heifers, as a rule, are born on time or a day earlier.
The total duration of pregnancy in nulliparous individuals is 2-5 days longer than that of those who had previously given birth.
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