Prevention and treatment of vitamin deficiency in metabolic diseased ducks caused by vitamin deficiency

Duck

Vitamin A deficiency is a nutritional and metabolic disease of ducks caused by insufficient supply of vitamin An in diet or disturbance of digestion and absorption.

Symptoms: when laying ducks were fed diets with low levels of vitamin An and their offspring were fed with diets lacking vitamin A, the ducklings developed vitamin A deficiency in about a week. It is characterized by stagnant growth, emaciation, dishevelled feathers, runny nose, tears, and adhesion, drying and shedding of eyelid feathers, forming dry circles of the eyes. Can also be due to eyelid adhesion or bulge, containing cheese-like exudate, or because exudate oppresses the eyeball, resulting in sunken eyeball, corneal opacity, softening or perforation, resulting in blindness. Such as severe deficiency, there may be motor disorders and other neurological symptoms. In adult laying ducks, the egg laying rate decreased, the egg hatching rate decreased, the weak chick rate increased, the mucosal resistance of digestive tract and respiratory tract decreased, and it was easy to infect other infectious diseases, resulting in death and loss. The sexual function of male ducks is decreased, and the semen quality is poor, which affects the fertilization rate.

Prevention and treatment: pay attention to supplement vitamin An in the diet, vitamin products should not be kept for too long, so as to avoid failure. In summer, if you add vitamins and mix too much, accumulate too long and get hot, vitamin An is easy to be destroyed. Therefore, to prevent this disease, we must pay attention to various possible causes of vitamin A deficiency. When ducks suffer from vitamin A deficiency, they should be fed with 2-to-4-fold vitamin A preparations that are normally needed. Cod liver oil can also be added to the feed, adding 2 to 4 milliliters per kilogram of feed for several days.

Vitamin B2 deficiency: vitamin B2 is riboflavin. The disease is a metabolic disease caused by lack or insufficient supply of riboflavin in diet.

Symptoms: when the ducklings lack riboflavin, they often have diarrhea, slow growth, weakness and emaciation, do not want to move, and when forced to drive away, they move with the aid of wings and hocks. Bend both toes inward (flexion), support the body with hocks or lie on your side with extended legs. When the laying duck was lack of riboflavin, the egg production decreased, the embryo mortality increased, and the weak chick rate was high.

Prevention: to prevent the occurrence of this disease, full-price granules should be fed, and high-quality additives or premixes can be used for self-proportioning. At the initial stage of the disease, an appropriate amount of riboflavin can be supplemented in the diet and often return to normal in a short period of time. If the toe has been flexion for a long time, riboflavin can not cure.

Vitamin E deficiency: also known as duckling white muscle disease, is a nutritional and metabolic disease caused by selenium deficiency or vitamin E deficiency. The disease mainly occurs in some selenium-deficient or low-selenium areas. Or due to the purchase of grains from these areas, especially corn as feed, coupled with the insufficient supplement of selenium or vitamin E in the feed, leading to the occurrence of the disease.

Symptoms: dispirited at the beginning of the disease, loss of appetite, reduced food intake, gradual weight loss, upside down feathers, white legs and beak color, runny nose, diarrhea, swollen head and neck, do not like to move. With the development of the disease, leg paralysis and weakness, like lying or unable to stand, shaking when walking, head and neck swaying or rolling backward, lying on the side, convulsion and death.

Prevention and treatment: pay attention to the source of feed grain, generally, selenium and vitamin E should be supplemented in feed. If the disease occurs in ducks, selenium and vitamin E should be supplemented quickly. 2.5 mg selenium and 250 units of vitamin E per kilogram of diet or water will have obvious control effect.