Category:
Hen, a kind of poultry, has a small head, oval eyes, a sharp and hard mouth and long and thick hair, so it is also called round-haired hen. It starts to eat late and slowly. The same chicken, 20.5 days prolific cock, 2 1 day prolific hen.
Classification level: Animal kingdom-Chordata-Vertebrate subfamily-Birds-Thoracodes-Chickens-Pheasants, domestic chickens.
Extended data:
Precautions for hen survival:
1, poor cold resistance. The temperature of newly hatched chicks is 3℃ lower than that of adult chickens, and it takes 10 days to reach the normal temperature. In addition, the chicken's fluff is short and thin, so it can't keep out the cold, so its adaptability to the environment is not strong. They must rely on artificial heat preservation to grow and develop normally. 1-30-day-old chickens should be kept warm and placed in a clean and hygienic environment. Chickens over 30 days old are basically full of feathers and can keep warm.
2, high body temperature, rapid development, the average chicken's body temperature is between 40.8-465438 0.5℃, so it must be raised in an environment with good ventilation, warm in winter and cool in summer. In addition, chicken's digestive tract is short, its metabolism is vigorous, and its growth and development are rapid, so it needs to be fed with nutritious and digestible feed to meet its needs.
3, weak resistance, especially chicks, vulnerable to harmful microorganisms. Therefore, in addition to cleaning the environment, we must also take precautions. For example, outsiders are strictly prohibited from entering and leaving the henhouse, the environment and cages should be disinfected, and all kinds of chickens should be injected with various vaccines regularly.
Chickens are timid, especially chicks are easily frightened. Light people are crowded and their growth and development are blocked, while heavy people trample on each other, resulting in disability and death. So chickens should be kept in quiet places. Rough management, sudden noise, the intrusion and capture of cats and dogs will all lead to riots and affect the growth of chickens.
5, afraid of humidity, chickens should grow in a dry and ventilated environment. If the environment is humid, some pathogens and molds can easily grow and reproduce. If the henhouse is wet, the chicken manure will ferment to produce toxic gas, which makes the chicken easy to get sick. The hatched chicks have weak heat preservation ability, and their normal body temperature is 3℃ lower than that of adults. Therefore, chicks are easy to "get together" to keep warm in the low temperature period, so it is necessary to do a good job of heat preservation for chicks. With the increase of age, the body temperature becomes more and more stable, the whole body is covered with feathers and there are no sweat glands. Therefore, adult chickens are afraid of heat and should do a good job of heatstroke prevention and cooling. Also, because the normal body temperature of chickens is higher than that of pigs and cows, diseases between them are not easy to infect each other.
Chickens are easily frightened and have poor ability to resist enemies: sudden abnormal sounds inside and outside the henhouse or the presence of cats, rats, snakes and other things in the henhouse can easily cause "stress reaction" of chickens, thus affecting their production performance, so it is necessary to maintain a quiet feeding environment.
References:
Baidu encyclopedia hen
1, base fertilizer: mainly decomposed fertilizer, which can be applied together with decompos