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First, the law of diurnal variation of ducks' intake. Under natural light, the ducks have 3 ornithals in one night, respectively, in the morning, at noon, and in the evening. Based on this, in the feeding and management should be done: 1. Strengthen early feeding. The ducks have a particularly strong appetite at dawn. Feeding and feeding them at this time will make the ducks more productive. 2. Timing grazing. Grazing should be carried out when the duck feeds three or three times during the early, middle and late nights. At other times, the ducks should rest or drive the ducks into the water. If you need to drink, dose, or feed, it's best to do it at the peak of duck feeding.
Second, ducks, eggs, day and night changes in the law According to reports, ducks eggs are mainly concentrated in the period from midnight to dawn before this time, usually not in the daytime eggs. To increase the egg production rate, we should: 1. Turn off the lights on time at 10:00 pm and stop lighting to ensure that ducks lay eggs in a quiet environment from 1 to 4 o'clock the next day. 2. If it is found that ducks generally produce eggs later than 5 o'clock, and the eggs are small, indicating that the concentrate in the diet is insufficient, the fine material should be added in time according to the standard. 3. If the ducks lay eggs during the day, they are mostly due to a single feed, lack of nutrients, premature grazing in the morning or high temperatures in the duck houses, high humidity and other harsh environments. The feeding and management conditions should be improved in a targeted manner and the ducks should be postponed for a while each morning (8 o'clock).
Third, ducks, the law of day and night mating changes breed ducks generally choose morning or evening, in the vast water surface. Therefore, it is necessary to make full use of the peak of mating ducks in the morning or evening to drive them to deeper waters, so as to increase the fertility rate of breeding ducks.
Fourth, the day and night changes in the law of illness during the day when the disease is due to the duck at the time of day (17 to 19 o'clock) and named after the disease. During the onset of the disease, the ducks became turbulent and quickly piled up, resulting in some weak ducks being trampled to death. The death rate often reached about 20%. The disease is due to transport stress, so all kinds of stress before and after long-distance transportation of ducks should be minimized. Within a few days after the ducks were shipped, anti-stress medications were added to the diet 1 to 2 hours before each day of the day in order to stop the disease in time.
V. Circadian variation of immune response The sensitivity of poultry to immune agents (vaccines, bacterins, etc.) is cyclically changed day and night, the sensitivity during the day is poor, and the immune response is dull; at night close to midnight, the secretion of adrenaline is the highest, immune response The most sensitive. Therefore, the immunization of poultry (including ducks, geese, and chickens) works well in the early morning hours. There are two benefits: 1. Poultry at night to stop activities, easy to capture, stress response. 2. Inoculation at dawn every morning can make it faster and better to produce immunity.
The duck's living environment alternates day and night. Affected by this, some of the duck's habits also have a corresponding circadian change pattern. If we follow this pattern of change in production and implement standardized and scientific rearing, we will be able to raise and manage a good duck population, reduce feeding costs, and effectively increase the egg production rate of ducks and ducks so as to improve breeding efficiency.