Day-night change ducks

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. By following this pattern of change, we will be able to raise and manage a good duck population. 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. In 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 can make the ducks grow their fleshy very fast. (2) timing grazing. Grazing should be carried out when the duck eats peaks in the early, middle, and late times. At other times, the ducks are allowed to rest or rush into the water. For drinking or feeding, it is best to schedule the duck during the peak period of 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 do the following: (1) Turn off the lights on time at 10:00 pm and stop lighting to ensure that laying ducks lay eggs in a quiet environment from 1-4 pm the next day. (2) If it is found that ducks generally produce eggs later than 5 o'clock, and the eggs are small, it indicates that the concentrate in the diet is insufficient, and the fine material should be increased 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 nutrition, 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, the diurnal variation of breeder duck mating It has been reported that mating ducks are generally selected in the morning or evening and are carried out on vast water surfaces. Therefore, it is necessary to make full use of the peak of mating ducks in the morning and evening to drive them to deeper waters in order to increase the fertilization rate of breeding eggs. Fourth, the day and night changes in the law of illness in the day and night when the disease is due to ducks in the afternoon every afternoon (17 - 19 hours) named after the disease. 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%. 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 1–2 hours before each day of the day in order to stop the disease in time. V. Circadian variation of immune response According to reports, 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 epinephrine is highest The immune response is most sensitive. Therefore, the immunization of poultry (including ducks, geese, and chickens) works well in the early morning hours. There are two advantages: (1) Poultry stops moving at night, it is easy to catch, and the stress response is small. (1) Poultry immune responses can be made early in the morning to immunize faster and better.

Steriod and Peptides

Proviron,CAS 1424-00-6,Steriods

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