Mid-range free-range ducks and ducks should be strengthened

Summer is the peak season for egg-laying in ducks. For example, when free-range ducks are guided to fields and rivers on cooler days, they can feed on a large amount of grains and live food, which significantly reduces feed costs for farmers and brings considerable economic benefits. However, summer temperatures are high, and poor management can not only lower the egg production rate but also harm the health of the ducks. In this article, we will briefly outline the key points of managing laying ducks during midsummer, hoping to provide useful insights for the poultry industry. Creating a Suitable Environment The layout and structure of the duck house should be well-planned, with adequate spacing between houses. The duck house must be well-ventilated, maintain proper temperature and humidity, and be cleaned regularly. Overcrowding should be avoided, and ducks should be raised in groups following an "all-in, all-out" system. It's important to maintain good hygiene both in the environment and for the staff. There should be no dirt around the duck house, and regular pest control should be conducted. Duck droppings should be removed promptly and placed away from the house for composting. Before entering the duck house, workers should change their shoes, wear overalls, and wash their hands with a disinfectant like 3% sursol or 0.1% benzalkonium. Workers and tools should be kept consistent, and unauthorized people should not enter the area without permission. Providing Nutritious Feed Ducks require balanced nutrition to support growth and egg production. Full-price feeds should be provided to meet their nutritional needs, especially vitamins and minerals, to improve disease resistance. Spoiled feed must be avoided. In addition to ensuring clean and fresh food, protein-rich, low-fat feeds such as aquatic plants, corn, soybean meal, and silkworm pupae should be included. Add 100 grams of oxytetracycline per 100 kg of feed. Before starting egg production, add 1 kg of honey per 50 kg of feed and feed it for three days, then stop for 15 days, and repeat for another three days. Clean drinking water should always be available. Due to abundant food sources, ducks may gain weight quickly, so their weight should be controlled between 1.5 and 2 kg to avoid affecting egg production. During hot summer days, night lighting can help ducks eat and rest freely at night. Feeds should be changed to compound feed, and live foods like quail, snails, loaches, and small fish should be offered to maintain good body condition. When grazing time is limited, ensure that the feed contains at least 18% protein and supplement with appropriate trace elements. Thorough Disinfection and Timely Vaccination Regular cleaning and disinfection of duck houses, feeding equipment, hatchery rooms, and vehicles are essential. Laying ducks should be vaccinated according to a proper schedule. For instance, at one day old, vaccinate against infectious hepatitis; at 60–70 days and 120 days, administer a single cholera vaccine; and at 70–80 days, give a duck maggot attenuated live vaccine. Before summer begins, include anticoccidial drugs in the feed. Preventing Heatstroke and Providing Adequate Lighting The ideal temperature for laying ducks is 15°C to 18°C. Temperatures below 5°C or above 35°C can affect egg production. Ducks should be housed in south-facing buildings with good ventilation, and shaded areas should be provided. Insulation on roofs and reduced stocking density can help keep the environment cool. Regular cleaning and dehumidification are necessary, avoiding watering the duck house. Using a dust washer is preferable. Encourage ducks to take more breaks during midday and visit water sources more often. In the evening, allow them to roam freely instead of rushing them. As autumn approaches, gradually reduce daylight and increase lighting by two hours each morning and evening to stimulate follicle development. Also, adjust heating and cooling measures based on temperature changes. Scientific Grazing Practices Grazing allows ducks to consume natural foods like shrimp, snails, and insects. However, it's important to follow the "six dos and don'ts": do not release ducks on an empty stomach, avoid driving them too fast, do not graze near roads or railways, and prevent disturbances from strangers, pigs, dogs, cats, or rats. If ducks show signs of weakness, lack of energy, fear of movement, or abnormal feathering, it could indicate a problem. If malnutrition is suspected, provide fresh feed or cod liver oil. If a disease is present, identify the cause quickly and treat accordingly. Monitoring Daily Observations Observe egg production: normally, ducks lay eggs between 1–3 AM, with smooth, thick, and shiny shells. If egg-laying is delayed, eggs are scattered, or the shells become thin or soft, it may indicate parasites or nutrient deficiencies. Deworming and adding bone meal, shell powder, or fishmeal can help restore normal production. Check droppings and feathers. White stools suggest overfeeding or indigestion, while loose stools indicate proper feeding. Healthy ducks have full, shiny feathers and a neat tail. If feathers are dull or the duck shows weakness, feed them fishmeal or other high-quality feed. Preventing and Treating Heatstroke Heatstroke symptoms in ducks include elevated body temperature, rapid breathing, depression, unsteady gait, loss of appetite, and even diarrhea. To treat, apply acupuncture and bloodletting to the feet of affected ducks, which can help return them to normal within about 10 minutes. Alternatively, splash cold water on the head and administer 2% saline solution (4–5 ml per duck) every 20–30 minutes until recovery.

Rating Ruler

Rating ruler, also known as a grating ruler displacement sensor (grating ruler sensor), is a measurement feedback device using the optical principle of grating.Grating ruler is often used in the closed-loop servo system of CNC machine tools, which can be used to detect linear displacement or angular displacement. The output signal is digital pulse, which has the characteristics of wide detection range, high detection accuracy, and fast response speed. For example, in the CNC machine tool is often used to detect the coordinates of the tool and the workpiece, to observe and track the tool error, and to play a role in compensating the tool motion error.

Rating Ruler

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