Old pigeons have tumors of the ovary and oviduct, merging with each other. Ovariocarcinomas were found in pigeons both as independent lesions and with carcinomas of other organs.
Differential diagnostic studies have shown that the process begins with the follicular epithelium and can be described as a granular type of tumor. They are usually small in size, and ovarian adenocarcinomas reach the size of an egg and have a thunderous shape. Tumors contain gray-white or brown liquid, ovariacarcinomas can be dense or, conversely, in the form of bubbles filled with liquid. The causes of the disease are unclear, some researchers believe that they are of a viral nature.
Ovariocarcinomas are often found on the esophagus, and their contents reach a volume of 610 mm. Most of these formations are recorded in pigeons that stop egg laying. Ovarian and oviduct cystadenomas have a thin wall, turbid or whitish contents.
Diagnosis of cystadenomas It is not difficult to open and detect characteristic changes. In doubtful cases resort to morphological studies. Intravital diagnosis is difficult due to uncharacteristic signs.
Pigeons and the prevention of their diseases. A.I. Rakhmakhov, B.F. Bessarabov (Moscow, Rosselkhozizdat, 1987)
Tumors of the ovary and oviduct
Old doves have tumors of the ovary and oviduct, merging with each other. Ovariocarcinomas were found in pigeons both as independent lesions and with carcinomas of other organs.
Differential diagnostic studies have shown that the process begins with the follicular epithelium and can be described as a granular type of tumor. They are usually small in size, and ovarian adenocarcinomas reach the size of an egg and have a cluster-shaped structure. Tumors contain gray-white or brown liquid, ovariocarcinomas can be dense or, conversely, in the form of bubbles filled with liquid. The causes of the disease are unclear, some researchers believe that they are of a viral nature.
Ovariocarcinomas are often found on the oviduct, and their contents reach a volume of 610 mm. Most of these formations are recorded in pigeons that stop egg laying. Ovarian and oviduct cystadenomas have a thin wall, turbid or whitish contents.
Diagnosis with cystadenomas is not difficult to open and detect characteristic changes. In doubtful cases resort to morphological studies. Intravital diagnosis is difficult due to uncharacteristic signs.
The causes of hereditary diseases are caused, first of all, by the restriction of offspring. Often the lack of breeding birds for valuable and rare breeds leads to the fact that the pigeon breeder begins to mate full brothers and sisters. This leads to hereditary disorders and the emergence of non-viable offspring.
We should not forget that a person in the process of creating breeds of pigeons inherited some useful qualities: the size of the beak, the featheredness of the parts of the head, legs, the setting of wings, tail, neck, a certain color of the feather on the parts of the body, selectivity to flight qualities. In the process of selection and selection of pairs stringent requirements are imposed on individual violations.
In pigeons, hereditary diseases can be divided into two groups:
1) improper egg formation, the presence of two yolks in an egg, two eggs, which leads to double deformities and death in the process of embryonic development,
2) the egg in appearance may be unchanged, but as a result of the presence of violations in the genes of the partners, various deformities and death of the embryos are noted. Only an insignificant part of the young is capable of withdrawal with the presence of changes. The transmission of such violations is possible in individual pigeons with doves, when replacing a partner, sometimes these symptoms disappear.
The most common violations are the laying of unfertilized eggs and the absence of offspring. The cause of the violation is often associated with a male who secrete dead sperm that are unable to fertilize an egg.
In appearance, the pigeons can be quite healthy, but they should not be left on the tribe. If the producer is valuable, then it must be mated with another darling, in the absence of positive results of fertilization, it is rejected.
In some cases, the onset of embryo development can be judged by the transillumination of the egg shell with contents above the light source. The most common deviations in embryonic development are as follows: abnormal development of the beak, lack of eyes or tail, wings, shortening or bending of the legs, skeleton: lack of feather, curly plumage, abnormal color of the iris, disturbance of the nervous system in the form of sleeping sickness, dwarfism, lack of head , cranium, etc.
All these changes in individual pigeons are steadily transmitted, therefore they cannot be allowed on the tribe. Most of the listed symptoms are called fatal, since they complicate the conclusion and lead to the death of the embryo. Some signs are called half deadly when the chick is hatched and dies in the first hours of life or survives to adulthood. For example, chicks may appear with the absence of a tail or partially plumage, shortening of the legs. Of course, these violations are of interest to science, since their timely recognition will provide a warning of their occurrence.
The industry produces a sufficient range of drugs that can be successfully used for the prevention and treatment of diseases of pigeons.
When choosing drugs, first of all, the disease against which the drug will be used should be taken into account. To use drugs, you need to be sure of the diagnosis of the disease. Improper treatment can harm the bird. With a disease, a weakening of the body's defenses occurs, and improper prescription of the drug leads to complications. When choosing the appropriate medication, the dosage and the frequency of its administration are of no small importance. The dosage of drugs in pigeons is a responsible and difficult task, because most of them have been tested on animals and poultry; rarely in the literature can one find information on the use of drugs in pigeons.
Pigeons with an intensive metabolism have a relatively short intestinal length, therefore, the absorption of nutrients and drugs introduced with food and water is more effective, and the reaction to drug administration is faster.
The most accurate dosage is based on 1 kg of pigeon body weight. If the drug is calculated on a group of pigeons, then it is advisable to recalculate the mass of the entire livestock. For example, the body weight of one pigeon is 700 g, and 20 pigeons - about 14 kg. The drug should be counted on this livestock. Sometimes drugs are calculated based on the amount of water and feed consumed. However, this calculation is less accurate, since significant fluctuations in the intake of feed and water are possible, due to the ease of dosing it can also be used.
The choice of dose depends also on age, intake of feed and water. Young animals are more sensitive to drugs compared to adult pigeons, which can be explained by a high level of metabolism, rapid absorption of drugs. During the growth period, young animals consume more food than adult pigeons per unit of body, therefore, the dosage for young animals is taken at the rate of: 10–20 days - a twentieth of the dose, 21–40 - the tenth of the dose, 40–70 - the fifth of the dose , 70 days and older - half the dose.
When choosing a drug, it is necessary to take into account some biological characteristics of pigeons, for example, high sensitivity to carbon tetrachloride and ethylene tetrachloride. These drugs are not recommended for use in pigeons. It inhibits the use of drugs with water and their poor solubility. In addition, the quality of the water is important - contamination with droppings and food, which leads to a decrease in the effectiveness of drugs. When giving a drug with drinking water, it must be borne in mind that water consumption increases in hot weather, pigeons drink less in winter. For the first time in 10 days of life, the need for pigeons in water is covered by goiter milk and fodder liquefied masses burping out by adult pigeons.
The need for water increases with certain types of food (peas, corn).
Giving drugs with food has some advantages: you can enter drugs that are insoluble in water, the food lingers in the intestines longer than water, and the therapeutic effect develops gradually. The peculiarity of pigeons, in comparison with other species of birds, is that they are reluctant to eat feed and take water with bitter medicines introduced into them. Usually a long hungry diet or aging pigeons without water is required before they begin to consume water and food with drugs. High concentrations of bitter substances in feed make treatment difficult. To avoid this, it is necessary to add sugar and glucose to drinking water, which relieve side effects.
It is better if the drug is given in the morning with food or water, when appetite is most pronounced. When the pigeon is oppressed due to the disease, there is a decrease or complete rejection of food, therefore, the therapeutic effect is not achieved. In such cases, the individual administration of drugs in the form of pills, capsules, using a syringe is desirable.