1. Look at the egg shape: The large end of the egg is too small. It is due to early food, and the small head is due to food. Eggshells should be uniform, smooth and thick. If the shells are thin and translucent, rough, etc., then the ratio of calcium and phosphorus in feed should be adjusted. The appearance of brown eggs, blood spots, etc., is caused by inflammation of the fallopian tubes. 2. Look at the laying time: Ducks normally lay eggs from 2:00 in the middle of the night to 8 in the morning. If they postpone every day, or even lay eggs during the day, the eggs are produced sparsely and the cause must be identified in time. 3, look at the weight: After a period of egg production, weight remains the same, indicating that proper feeding and management. 4. Look at the egg weight: The eggs are very small at the time of first production. Take light ducks as an example. The initial production is only about 50g. By 200 days, it can reach 90% of the average egg weight in the whole period. It can reach the age of 250 days and can reach the standard. Egg weight. 5. Look at the egg production rate: The egg production rate in the early stage of egg production is rising. The ducks produced in early spring rise faster. For light ducks, for example, the egg production rate should reach 90% by the latest by 200 days. About egg production rate in the early stage of egg production fluctuations, or even decline, are not normal, to find reasons from the feeding and management. 6. Look at the feathers: The feathers are smooth, tight and close to the body, indicating good feed quality. 7, to see appetite: no matter the captive or grazing, duck production (especially high-yielding duck) the most diligent in foraging, wake up early in the morning, grazing everywhere for food, feeding the first food, showing strong appetite, should be more Hey. 8, see the spirit: healthy and productive ducks lively spirit, action, flexibility, grazing out, like out of the group foraging, separate activities, into the duck after lying down alone, quietly to sleep. If you are inactive and unresponsive, you are weak and sick. 9. Watching the splash: A healthy duck with a high egg production rate has a long diving time after entering the water. After landing, the feathers are smooth and wet. Ducks are afraid to go into the water and are reluctant to bathe. When they go into the water, their feathers become wet and they sink. Even if they fall ashore, they have drooping wings and their movements are weak. This is a sign of falling eggs.
Disposable IV Cannula
Iv Cannula,Iv Catheter,Without Injection Port
Catheters And Tubes Co., Ltd. , http://www.cnmedicalinstrument.com