The task of each owner is to provide his animal not only with comfortable living, but also to create all the conditions for the birth of healthy offspring. To determine the pregnancy of a cow at home can be a few methods.
Why is called pregnant?
With the onset of puberty, a number of physiological changes occur in the female's body - the sexual cycle. It is due to certain processes that occur periodically every month before the onset of pregnancy. For example, in cows, the sexual cycle lasts from 20 to 28 days, which covers the period of estrus, sexual hunting, ovulation. If an insemination occurs during ovulation, then pregnancy begins or, as it should be properly called, pregnancy. Most likely comes from the word "calf", that is, a cow "with a calf." It is also worth noting that the female, which is only fertilized, is called a "hen".
How long is this period?
Pregnancy in the female is a natural physiological condition of the body, which covers the period from conception to birth of the fetus. Pregnancy in cows lasts an average of 285 days. However, the possible fluctuations of this figure in the interval from 270 to 300 days. This is the norm.
During pregnancy, the animal should be well fed, with the second half of the period to increase the amount of feed by 0.2-0.3 feed units. Around the fifth month of pregnancy, the cow reduces the total yield, so you should gradually begin to convert it to deadwood. After calving, the cow should preferably be re-inseminated only after 50-70 days.
Drawing up a calendar
As soon as the cow is inseminated and the pregnancy comes, it is necessary to make a special calendar. With its help, it will be possible to determine in advance the approximate date of calving, as well as correctly launch the animal (transition to deadwood). Knowing that, on average, the pregnancy lasts about 285 days, experts advise starting deadwood 2-2.5 months before the intended birth.
It is important to note that most modern breeds of cows, and this is Golshtinsky, Kholmogorskaya, Aishirskaya, with proper care, give birth to the 9th month of gestation (more than 88%). Only 7% of females have early or late births. Normally, the entire dry period should last about 60 days.
A special calendar of start and calving, presented in the table below, will help you accurately track the entire period of pregnancy. The first column indicates the date of insemination, and the second has already calculated the approximate date of delivery.Table determine the pregnancy of cows
Methods of determination
You have inseminated a cow, but now the question arises - has the whole process passed successfully and has the pregnancy occurred? Of course, you can wait about 5 months until the pregnancy is determined by an external examination of the animal. But it is much more expedient and more correct to determine the time and fact of pregnancy in the early stages. There are several basic ways to do this:
- laboratory and diagnostic;
All these methods are successfully applied on farms and households, depending on the individual characteristics of the animal and the duration of pregnancy. Consider all the more detail.
Up to 30 days after insemination
In such a short period of time, the fact that a possible pregnancy has begun is often not difficult to determine by the behavior of the cow. If the animal has become more calm, it shows some caution, eats well all the proposed feed, most likely the result of fertilization is positive. In addition, the pregnant female has no repeated hunting period. But there are a few more points that may also indicate a pregnancy:
- Vaginal discharge is a bright sign of successful insemination in the first 1.5-2 months. At this time, a special mucus is emitted from the vagina of the cow. It can be seen both on the genital lips, and in the form of dried crusts on the sciatic mounds or tail.
- The condition of the wool - experienced milkmaids and livestock technicians can often tell about the pregnancy of the cows only by its coat. If it is sleek and shiny, it can be a sign of pregnancy. If the wool sticks out a hedgehog - the cow is cow.
In many modern farms, the fact of pregnancy is checked with a special dough that tracks the chemical composition of milk for the presence of progesterone. As we know, it is this hormone in females that is responsible for ovulation. If insemination is successful, the concentration of progesterone in the milk will increase and approximately on the 23rd day with the help of the test it will be possible to say whether the cow is pregnant or not.
Starting from the 30th day after insemination, the hormonal composition of the blood changes in the cow. Laboratory biochemical research allows to determine even the smallest changes and give a reliable answer about pregnancy. However, when conducting this analysis it is important to bear in mind that after the last pregnancy the animal must have at least 90 days. Otherwise, the test may show the previous result of pregnancy.Pregnancy study using ultrasound
Modern equipment allows us to detect pregnancy in cows in its early stages. In this case, an ultrasound scanner can determine not only the presence of the embryo, but also the possible pathologies of its development. However, it is forbidden to conduct such a study before the 30-day period, as miscarriage may occur.
Rectal examination with palpation should only be carried out by an experienced veterinarian. Today it is considered the most popular method for determining the pregnancy of cows. The essence of this method is the palpation of the uterus through the rectum.
This method consists in probing the fetus outside. It can also be done only by a veterinarian. To do this, on the right side of the animal 50 centimeters below the hungry fossa and a hand is placed a little behind the costal arch. Then rhythmic pushes are made on the stomach. In order to probe the possible fetus, probing should be done early in the morning before the cow begins to eat.
To make a study on milk on the cow's pregnancy is possible in normal home conditions. There are two methods for this:
- Drop a drop of milk in a glass of cold clean water. If the milk, plunging into water, dissolves without a trace, the animal is bedding. If the drop has spread to the surface in the form of a cloud, the female is not pregnant.
- 5 ml of fresh fresh milk mixed with 5 ml of pure alcohol, if it is curled up in a few minutes - a cow cow.
This method is possible only 5-6 months after insemination. At this time, the animal has a significantly increased abdomen and on the one hand the location of the fetus can even be seen. Putting a hand on the bulging point, you can also feel the movement or shocks.