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. To comply with this change, do a good job duck management.
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.
Feeding and management: The ducks have a particularly strong appetite at dawn. Feeding and feeding them at this time can make the ducks grow their fleshy meat particularly fast; grazing should be carried out during the peak of the feed intake at 3 times of the early, middle and late nights. Take a break or drive it into the water to combine work and rest. For drinking or feeding, it is best to schedule the duck during the peak period of feeding.
Second, the diurnal variation of eggs laid eggs Circadian duck eggs are mainly concentrated in the period from midnight to dawn before this time, usually not in the daytime eggs.
Feeding and management: Turn off the lights on time at 10:00 pm and stop the lighting to ensure that the ducks lay eggs in a quiet environment from 1-4 pm the next day; if the ducks are found to lay eggs later than 5 o'clock, and the eggs are smaller, it means that the eggs are small. The lack of concentrates in the rations should be increased in time by the standard; if the ducks lay eggs during the day, they are mainly due to single feed, lack of nutrition, premature out of the morning or high temperatures in the duck house, high humidity and other harsh environments Caused. Targeted improvements should be made to their feeding and management conditions, and the ducks should be postponed until 8 o'clock each day.
Third, the breeder duck mating fleas change law breeder duck mating generally choose morning or evening, in the vast water surface. Feeding management: make full use of the peak of the mating ducks in the morning and evening to drive them to deeper waters to increase the fertilization rate of the breeding eggs.
Fourth, the circadian rhythm of the disease when the law of day and night sickness is caused by transport stress, because the ducks every day in the afternoon when the incidence of 17-19 was named. During the onset of the disease, the ducks became turbulent and quickly piled up, causing some weak ducks to be trampled to death. The mortality rate was 17-24%.
Feeding management: Minimize the stress of ducks before and after long-distance transportation. Within a few days after the ducks were shipped, anti-stress medications were added to the diet 1–2 hours before each day of the day in order to stop the disease in time.
V. Circadian Law 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 highest, immune response The most sensitive.
Feeding management: The immunization of poultry (including ducks, geese, and chickens) works well in the early morning hours. Poultry stopped activities at night, it is easy to catch, and the stress response is small. Inoculation of poultry immune response every morning can make it faster and better to produce immunity.
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