First, measures must be put in place
1. Carefully feed. The quality of feed for the early layer moulting is better, and the diet should be relatively stable. Feeding feeds should give digestible high quality feeds and vitamins, especially B vitamins. When a large number of moults are fed, sufficient feed containing lysine and methionine, such as fishmeal, corn, and beancake, must be fed. At the same time, 1%-2% gypsum powder should be added to the diet to supplement sulfur and calcium. The protein content of the new layer chicken diet should be 18%, and incorporate enough poultry vitamins and auxin.
2. Forced moulting. There are several methods of forced moulting, such as hunger method and chemical method (2% zinc sulfate is added to the diet of chickens for chickens), and hormone method (5 milliliters of thyroxine for 2500 international units for each chicken). . However, artificial forced moulting should be suitable for the time. When chemical methods are used, poisoning caused by overdose of drugs should be prevented.
3. Add light. Artificial supplemental lighting should start from late September. New hens usually hatched in April and April do not need to be supplemented with light in the current year; new hens hatched in January and February need supplementary light when the egg production rate reaches a peak, but the sum of artificial light and natural light time Can not exceed 14 hours; re-production hens from September to October if you still maintain stable production and high yield, you can extend the lighting time, so that the peak period of egg production light time is maintained at 14-16 hours. The method is to add a 40-watt electric lamp in the house, with a lampshade with a diameter of 40 centimeters, a cover height of 10 centimeters, an electric light of 1.5-2 centimeters from the ground, and a certain time in the morning and in the evening.
4. Adjust the environment. The suitable temperature of laying hens is 13°C-24°C and the relative humidity is 50%-75%. Too high and too low will reduce the laying rate of chickens. In the early fall season, the weather is still hot and the rain is relatively heavy. The chicken house is relatively humid and prone to respiratory and intestinal infectious diseases. Therefore, ventilation and ventilation must be strengthened. Open doors and windows during the day, increase ventilation, and provide appropriate ventilation at night to reduce temperature and humidity, which is conducive to heat dissipation in chickens and reduction of water content in chicken manure, and reduce the conditions of chicken manure fermentation in chicken coops to prevent excessive production. The occurrence and spread of harmful gases and certain diseases.
Second, chickens to adjust
In the autumn, the moulting of old chickens and the opening of new chickens are started. This is a good season to adjust the flock and select the breeding chickens. The birds should be adjusted and identified in a planned manner. In order to improve the economic efficiency of laying hens, low-producing chickens should be eliminated in time and high-yielding chickens should be kept according to the physiological characteristics of chickens. The method of identifying the pros and cons is as follows:
1. Crown and meat. The crown and meat of laying hens are bright and meticulous because of their strong blood circulation. The chicken cocks and minced meats that were discontinued were pale and shrivelled, pale in color, and dry in touch.
2. Cloaca. The cloaccus of laying hens is large, oval in shape, moist and loose, and white. The Cloaca of the discontinued chicken was wrinkled, dry, and mostly yellow.
3. Pubic bone. Egg laying chickens are soft, stretchy and open, with three to four fingers wide. Discontinued production of chicken pubic bone end hard, close to the general only one or two fingers, bent inwards and hard.
4. The distance between pubis and keel. The distance between the two represents the size of the abdominal cavity. The distance between laying hens is very long. Four to five fingers can be put down. The chickens that are out of production are close to each other and only allow two to three fingers.
5. Abdomen. The laying hens' belly is soft and elastic. Discontinued chickens are tight and hard on the abdomen and have rough skin.
6. Pigment. The chicken's mouth and legs that are laying eggs become pale yellow or white. Because the yellow pigment accumulated in the chicken is used to form the yolk, the parts of the external yellow pigment become light yellow and white, especially the mouth and legs. Discontinued chickens use less yellow pigment in their bodies, and their mouths and legs still exhibit yellow color.
7. Moulting. It is one of the most important characteristics of the identification of chicken production performance. High-produced chicken feathers are dull, dark and dry, and are not exactly tidy; low-yielding chickens are neat and shiny. Old chicken moults in the fall because the main component of feathers is protein, so it is generally discontinued during moulting. Individual high-yielding chickens lay their eggs for feathers, and the length of the new feathers is longer. High-yielding chickens grow quickly after being moulted, and they continue to lay eggs after the new feathers grow.
Third, prevention should be careful
In autumn, the weather gradually turns cold, the climate changes, and the rainfall decreases. According to the climate characteristics, the main points of chicken health care are mainly based on the principle of “preventing over-regulation and treatment†and doing a good job of autumn prevention work to remind farmers to pay attention to the details of raising chickens. From the beginning of the autumn, chicken farming has entered the careful management stage. After the farmers have fully considered the structure of the shed and the internal hardware and other conditions, the chicken density, chicken time, distribution group management, thermal insulation, and ventilation are decided. Gas specific implementation methods and other details.
Routine prevention and control of diseases mainly include: prevention and control of respiratory diseases, mostly due to neglect of the temperature difference between day and night, and failure to provide star services to chickens; the frequency of cold stress caused by large temperature difference between day and night is mainly Is the kidney and bursa of the bursa, characterized by close relationship with the rain cooling at night, the incidence of acute, but misdiagnosed a lot of mistreatment; due to the high density of chickens, the need for insulation in the evening closed the house caused by poor ventilation and multiple The mixed feelings of E. coli and mycoplasma will also increase at this time; mild avian influenza and E. coli and mycoplasma are beginning to prevail.
Chicken pox also began to appear serious cases, mostly due to ignorance of inoculation. During the period of high frequency of chicken pox, the corn seedlings from the red line to the newly planted wheat seedlings are 10 cm high. Chickens in this period of time need to be vaccinated against fowlpox vaccine. In some high-incidence areas, the inoculation period has to be extended.
4G Mini Camera Structural components
The main structures and components of the camera can be listed from the working principle of the camera:
1. LENS
Lens structure, consisting of several lenses, including plastic lens or glass lens
2. Image sensor
It can be divided into two categories:
CCD (charge couple device): charge coupled device
CMOS (complementary metal oxide semiconductor): complementary metal oxide semiconductor
3. Digital signal processing chip (DSP)
There are many DSP manufacturers, such as VIMICRO 301P/L, SONIX 102/120/128, ST (Logitech LOGITECH's DSP provider), SUNPLUS (SUN+focuses on the development of CIF and VGA for single chip, but the image quality is average), PIXART (original phase), PAC207, SQ930C, etc.
4. Power supply
Two working voltages are required inside the camera: 3.3V and 2.5V. The latest process chip can use 1.8V.
Some cameras also use video transmission lines for synchronous power supply without external power lines.
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