Growth and development of wool rabbits
Due to seasons, age, nutrition and disease, rabbit hair will fall off and grow new hair in its original place.
This process is called mopping. Animal hair exchange is a complex biological process, hair follicle knots
The structure has undergone significant changes. The old hairy hairy nipples begin to shrink, the blood supply stops, and the hair bulb cells begin
At the same time, under the old hair, new hair papillae are developed and new hairballs form.
The new hair bulb cells continue to multiply and form new hairs. Normal hair replacement should be seen as meat rabbits to the outside environment
An adaptable performance. Hair replacement can be divided into age-based and seasonal hair replacement.
1. Age-based hair replacement mainly occurs in young rabbits and young rabbits. Infant's first change is about
30 days of age and 100 days of age are over. At this time, meat rabbits, skin and flesh rabbits can be slaughtered.
Because the hair is mature at this time, the quality of the fur is best, and the weight gain rate is slowed down later. Growing season
The secondary hairs begin at about 130 days and end at 190 days.
2. Seasonal hair replacement means that when the rabbit enters adulthood, the hair should be changed twice a year, that is, in the spring and in the fall.
The timing of the hair-change time and the length of the hair-changing period are affected by many factors, such as the illumination in different areas,
Temperature, age, gender, health status, and nutritional status all affect the rabbit's seasonal fur change.
In the spring of April-March, the hair replacement time is shorter and the hair exchange is faster. Therefore, the light shines from short days.
Long daylight transition, the temperature changes from cold to warm to hot, skin hair follicle metabolism is strong
, Green feed in the feed increased, and the nutrition level was high; in the fall, the hair replacement was about from September to October, and the hair replacement time was long.
Therefore, when the light changes from a long day to a short day, the temperature gradually decreases, and the amount of roughage in the feed increases.
Poor nutrition, new hair grows slowly. Therefore, attention should be paid to adding protein-rich feed in the fall. Hair change
Sequence: Start with the back of the neck, followed by the back of the torso, and then extend to both body sides and hips.
However, the neck hair is continuously removed in summer
Content sources Albert pheasants
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