Technology of raising chickens in rural areas: what are the common diseases of laying hens? Attached cause analysis

Now rural farmers are afraid of poultry disease when it comes to poultry disease, afraid of chicken disease, in fact, for poultry disease, it is best to know early, early prevention, early treatment, so what are the common diseases of layer breeding? What caused it? Let's do a brief analysis below.

1. Soft shell eggs

The egg shell is incomplete, with only a thin layer of calcium deposited on the eggshell membrane.

Reasons: 1. Excessive phosphorus intake;2. Heat stress;3. Excessive salty drinking water;4. Mycotoxin; 5. Chicken age: easy to occur in old laying hens.

2. Split shell egg

Eggs appear fine cracks, star cracks, and even completely cracked shells.

Causes: 1. Heat stress;2. Salty drinking water;3. Malnutrition, especially calcium and vitamin D;4. Mycotoxins

Third, white spotted eggs

Similar to the calcium deposition problem, these spots are smaller and appear on eggshells before or after the epidermis forms.

Causes: 1. Egg shell gland defect;2. Calcification process disorder;3. Malnutrition, such as high level

IV. Brown spotted eggs

Similar to white spotted eggs. The spots are brown.

Causes: 1. Egg gland defect 2. Calcification process disorder 3. Malnutrition

5. Dirty eggs

All or part of the eggshells are contaminated with chicken manure. Avoid feed ingredients that cause wet and sticky manure.

Causes: 1. Wet faeces;2. High levels of indigestible substances in feed;3. Poor intestinal health;4. Electrolyte imbalance or salty drinking water

6. Blood eggs

When the laying hens have anal prolapse, pecking addiction or pecking anal phenomenon, blood stains are easy to appear, and blood stains are easy to appear in the laying hens.

Causes: 1. Overweight chicks;2. Sudden daily increase;3. Poor hygiene of chicken cages, trays and egg collection conveyors

7. Faded eggs

The degree of browning depends on the quality of pigment deposited on the eggshell epidermis.

Causes: 1. Infectious bronchitis;2. Age of chickens: high probability of occurrence of old laying hens;3. Flocks subjected to high stress;4. Egg drop syndrome;5. Use of chemical drugs. such as sulfonamides and anticoccidiosis drugs

Eight, pink eggs

Eggshells appear pink or lilac because of the color mixing effect of the shell skin combined with the extra calcium layer.

Causes: 1. Stress;2. High calcium diet

9. Shellless eggs

The eggs laid by laying hens have no eggshells, only a layer of shell membrane to wrap them.

Causes: 1. immature eggshell gland development;2. diseases: Newcastle disease, infectious bronchitis, avian influenza, egg drop syndrome, etc.;3. malnutrition: calcium, phosphorus, manganese or vitamin D

10. Corrugated eggs

Corrugated eggs are characterized by very rough egg surface, showing wrinkles.

Causes: 1. Heredity 2. Newcastle disease or bronchitis 3. Excessive use of antibiotics 4. Excessive calcium intake 5. Copper deficiency

Eleven, wrinkled eggs

Calcified hillocks appeared on the eggshell surface, and the degree of hillocks depended on the presence of foreign substances in the process of eggshell calcification.

Reasons: 1. Chicken age;2. Chicken breed;3. Malnutrition

Twelve, sand preserved eggs

There are fine wrinkles or creases on the surface of the eggshell

Causes: 1. Stress;2. Disease;3. Egg gland defect;4. Feeding density is too high

Thirteen, calcium wrapped eggs

This type of egg is the entire surface of the egg shell or one end of the egg shell is covered with an extra layer of calcified material.

Causes: 1. eggshell gland defect;2. calcification process disorder;3. malnutrition, such as high calcium levels

14. Calcareous deposit eggs

White irregular spots deposited on eggshell surface

Causes: 1. eggshell gland defect;2. calcification process disorder;3. malnutrition, such as high calcium levels

Fifteen, mottled eggs

When the egg is covered on the light source, it can be found that the eggshell appears mottled or glass texture.

Causes: 1. High humidity in chicken houses;2. Disease and mycotoxins;3. Manganese deficiency;4. Overcrowding

Sixteen, automatic healing eggs

The egg breaks when it is in the egg sac, but the hen repairs itself before laying.

Reasons: 1. Unsuitable lighting;2. Stress;3. Age of chickens: old laying hens are prone to occur;4. Overcrowding

17. The crack has been repaired

This egg crack occurs when the egg is formed, but is repaired before laying.

Cause: laying hens receive stress when eggs are calcified

18, deformed eggs

Deformed eggs differ in shape and size from normal eggs, being either too large or too small and appearing round rather than oval.

Causes: 1. Immature eggshell gland development;2. Diseases: Newcastle disease, infectious bronchitis, infectious laryngotracheitis, egg drop syndrome, etc.;3. Stress;4. Overcrowding

Nineteen, white ring eggs

This is the result of two eggs forming in an eggshell gland touching together. This is even if the egg's normal calcification process is disrupted, the egg shell of the egg in the eggshell gland sac earlier and the surface of the second egg that wants to touch get extra calcium.

Causes: 1. Stress;2. Light changes;3. Infection

20. Flat eggs on the side

The flat egg on the side is the second egg that is like an eggshell gland sac. It has not acquired the complete calcification process like the first egg, so it has flat and concave marks on the surface in contact with the first egg.

Causes: 1. Stress;2. Light changes;3. Infection