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"Ken to fight the chicken" is a fictional fast food restaurant in the violent event of the Red-hot comics. Debuted in the "brain-disabled advertisement" in the second episode of the second season of the violent incident.
After that, Kenji became a network buzzword and became popular. As KFC food safety issues were once again exposed, "Ken to fight chicken" became synonymous with the practice of using hormones in the poultry farming industry in pursuit of economic benefits.
But in fact, there are many factors that affect the growth of broiler breeders, including genetic breeding, feed nutrition, feeding environment, etc. Among them, the lighting management of the breeding environment is often overlooked. Today we will talk about the management points of A++ broiler lighting.
The duration and intensity of light play a crucial role in the development of the breeding system of broiler breeders; the difference in illumination time and intensity between the brooding environment and the laying environment controls and stimulates the development of the ovaries and testes; therefore, through appropriate illumination Stimulation is one of the important means to obtain uniform sexual maturity and optimal production performance of breeders. In actual production, AA+ broiler chicken lighting management should pay attention to the following points:
1. Ensure the time and intensity of light during the brooding period
1. The light intensity of the 7d before brooding is better and better. The light intensity of the brooding area should be 80-100Ix. It is good for the chicks to start and boil well, cultivate early appetite, promote early growth and development, and then grow with age. Gradually decreases. The light time is gradually shortened according to the weight.
2. When replacing the feeding utensils (feeders and water) during brooding, especially during the period of transition from the small kettle to the waterline, the light intensity should be stopped.
2. Pay attention to the lighting during the breeding period
1. When the breeding period is black, the light intensity when turning off the light should be less than 0.4Ix: the light intensity when turning on the light is 10Ix.
2, cover the black house should definitely avoid light leakage. Especially the air intake I: 1, the air outlet and the operation room f-1: because the breeder is very sensitive to light, any accidental light leakage should be corrected and improved in time To maintain proper control of lighting time.
3, in the staged feeding process, if you need to transfer in the late stage of breeding. The light intensity of the rear transfer house cannot be higher than that of the front house.
4. Assault work such as immunization, whole group weighing, weekend weighing and other management matters during the breeding period cannot increase the illumination time and intensity.
3. Comprehensive consideration of all aspects of lighting
1. The illumination content should consider the illumination time, illumination intensity, illumination wavelength, and illumination uniformity (light uniformity has an effect on the growth weight and sexual maturity of the breeder).
2. Choose a suitable light source (such as incandescent lamps, fluorescent lamps, high-pressure nano lamps, energy-saving lamps, etc.). Table 1 shows the luminous efficiencies of the various lights (high-pressure nano-lights work better in high-rise houses with a minimum roof height of 3 m.
4. Focus on spectral quality
The light band is divided into long and short depending on the wavelength. Short wavelengths include blue, violet, and green. Suitable for the breeding period; long wavelengths include yellow, orange and red, suitable for laying period. Spectral quality is important, and the visible spectrum is from 450 to 750 nm from blue to red. Blue can promote growth, but it reduces egg production and feed efficiency; orange can increase egg production rate, but red suppresses cock's fertilization rate.
In the past, how to judge the quality of the spectrum may be very difficult for many poultry farmers because traditional spectroscopic instruments are expensive and require a computer to display the test results. Yes, you have to take the computer to raise the chicken farm. With the development of technology, the current spectrum tester has solved this problem. The instrument itself is small in size, and can also be used with the mobile phone to display the test results on the mobile phone.
5. Follow the correct lighting principle
1. The incubation period must not increase the illumination time and intensity arbitrarily; the flock can receive a constant illumination time or the length of sunshine is gradually reduced.
2. In an open or obscured house. When the chicken enters the human sexual maturity stage (12 weeks, at the latest 15 weeks), the length of the light cannot be reduced (or constant) and the intensity cannot be weakened (or constant).
3, the laying period must not reduce the light time and intensity, the light should be gradually increased; after 21 weeks, the light length is not allowed to be reduced.
4. Shade the house to implement light stimulation. For example, when the natural light is used during the period from April to August, the intensity of sunlight entering the house will increase sharply, which will inevitably lead to premature birth of the flock, double yellow eggs and anal chicken. Therefore, you should pay attention.
6. Choose the right time to add light stimulation
Timely light stimulation of the breeder's response to increased daylight and intensity depends on the age, weight, good flock uniformity, bone size, body muscle fullness, number of main wing feathers, pubic opening and appropriateness of the breeder. The accumulation of nutrients. In general, when starting light stimulation, the following conditions should be met:
1. Weight standard: 95% of hens weigh more than 2400g; cocks weigh 3200g.
2. Accumulated energy and protein are sufficient: the hen accumulates more than 27,000 kcal of energy. More than 1500g of balanced protein; cock tired face i Li: face i while taking energy 33000 kcal, more than 185% of balanced protein. Insufficient accumulation of energy protein can affect the persistence of laying eggs during laying and reduce the performance of production.
3. Moulting condition: The number of remaining main feathers is 2 to 3.
4, pubic spacing: 90% of the pubis pubic opening should be around 2 fingers.
5. Proper chest muscle development and fat deposition.
6, good uniformity: weight uniformity should be at least 80% or more: At the same time should also consider the sexual maturity, body condition development, moulting, pubic spacing and so on.
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