Egg binding, or the obstruction of the uterus or oviduct by an egg, is a common problem seen in female birds. Since it can occur in a female bird, even if a mate is not present, unmated pet birds can also experience this problem. Egg binding can be life-threatening, especially in the smaller species such as finches, budgies, lovebirds and cockatiels.
Most companion birds lay eggs every 24 – 48 hours during their laying cycle, but variability in egg transit time can make it difficult to know when a problem is occurring.
Most companion birds lay eggs every 24 – 48 hours during their laying cycle, but variability in egg transit time can make it difficult to know when a problem is occurring.
A variety of things may cause egg binding. One of the most common causes of egg binding is an all-seed diet because it is very low in calcium as well as other essential vitamins and minerals. Other causes include obesity, lack of exercise, oversized or mal-formed eggs, excessive egg laying, oviduct infection or damage, heredity and senility are all causes of egg binding.
Egg formation takes approximately 24-25 hours. If an egg remains in the oviduct for an abnormal length of time, a number of problems may result. These problems tend to be most severe in the smaller species. If an egg remains lodged in the pelvic canal, it can interfere with blood circulation in the pelvis and to the kidneys. The egg can interfere with urination and defecation, leading to metabolic disturbances. The egg can press against the wall of the oviduct, causing it to die and rupture.
Clinical Signs
Presenting clinical signs vary with the individual bird. A hen may appear depressed, have an abnormally wide stance, and make repeated straining motions. Some birds may be puffed yet perching, while others may be found on the bottom of the cage. Some birds may even be found dead on the floor of the cage or aviary without any previous warning. Droppings may be larger than normal or no droppings may be passed and the vent may be dilated and swollen.
Presenting clinical signs vary with the individual bird. A hen may appear depressed, have an abnormally wide stance, and make repeated straining motions. Some birds may be puffed yet perching, while others may be found on the bottom of the cage. Some birds may even be found dead on the floor of the cage or aviary without any previous warning. Droppings may be larger than normal or no droppings may be passed and the vent may be dilated and swollen.
Diagnosis of Egg Binding
Many birds have a history of prolonged egg laying, while others may have never laid an egg before. If you suspect that a bird is egg bound, it should be examined by an avian veterinarian immediately. In some birds, gentle examination of the abdomen reveals the presence of an egg. It is often necessary to radiograph the bird to determine the size, position and number of eggs present. If the egg shell is not present, ultrasound may be necessary to reveal the presence of an egg.
Many birds have a history of prolonged egg laying, while others may have never laid an egg before. If you suspect that a bird is egg bound, it should be examined by an avian veterinarian immediately. In some birds, gentle examination of the abdomen reveals the presence of an egg. It is often necessary to radiograph the bird to determine the size, position and number of eggs present. If the egg shell is not present, ultrasound may be necessary to reveal the presence of an egg.
0 التعليقات:
إرسال تعليق