The central production area of ​​Jiangnan No. 2 ducks is the Tuanshan Egg and Egg Base of Shuyang County, Anhui Province. In order to protect the resources of the outstanding duck breed of “Jiangnan No. 2†and further improve its production performance, the Ministry of Agriculture and Anhui Agricultural Bureau issued A series of policies and earmarked funds have been set up in the "Hometown of Chinese Red Hearts and Salted Eggs," a county-owned poultry egg base in Shuyang County, Anhui Province.
I. Variety characteristics
Jiangnan No. 2 duck duck breast width wide, body length longer; yellowish green, iridescent brown; red, orange; armor, claw yellow; head and neck feather with emerald green; front chest brown The belly feathers are grey and white, with fine reed markings; wing feathers dark brown, with feathers.
The body of the female duck is slender and well-proportioned. The trunk is 45 degrees above the ground when standing and walking. The head is smaller and the neck is slender. The urn is bronze and iridescent brown.胫蹼Orange red, whole body pure brown; feathers of the back body feathered brownish yellow, the middle of the plume is a long elliptic brown spot, feather spots gradually increase from the front of the body to the back, the color deepens; the color of the abdomen body plume Shallow; the feathers of the neck are slender, with no dark brown patches; the dark brown patches of the feathers on the top of the head and in front of the eyes are enlarged and the color is obvious; the wing feathers are brownish and have feathers. The well-developed tail glands, accounting for 0.2% of body weight, provide sufficient fat for the duck to comb feathers.
Jiangnan No. 2 duck has a long egg production period and high egg production rate. High-yielding ducks can produce eggs continuously during the winter and winter. The average annual egg production is 280-320 pieces, and the average egg weight is 69g/piece. The eggshell is 92% green, and the eggshell is sturdy. The egg shape index is 1.42-1.45.
Female ducks have a production date of 100-120 days, ducks have sexual maturity of 100 days, male-female ratio is 1:22, fertilization rate of eggs is 90-96%, and average hatching rate of fertilized eggs is 89-93%. Without nesting, the survival rate was 99.2% under normal feeding and management conditions.
Feeding Jiangnan No.2 ducks has good economic returns and quick results. After entering the laying period, the average female laying rate is 95%. Calculated on the basis of rearing 2,000 laying ducks, 1900 eggs are produced each day, and the egg price is 0.45 yuan per egg. (Food eggs, eggs 0.6 yuan), output 1900 0.46 yuan = 874 yuan (daily); feed ratio: Each duck fed 150-200 grams a day, feed costs within 0.25 yuan, a total of feed costs about 500 yuan The economic benefits are very substantial. If free stocking is implemented, the cost of raising the livestock will be reduced by 60%.
Second, brooding management of Jiangnan II duck
1, choose young. Young and young broods should be selected. They are characterized by their eyes and spirits, their liveliness and temperament, their well-balanced figures, their well-trimmed and shiny hair. The abdomen is soft and of moderate size, the umbilical cord is well-healed, and the full body of the hand is full, the struggling is more powerful, the cry is loud, the hands touch the duck feet warm, and the contraction is strong after opening the cloaca, and the cloacal cavity is clean and moist.
2, insulation. After hatching, the ducklings should be kept at 25-30°C within one week. After one week, the temperature can be lowered by 1°C per day. After 15 days, the temperature can be maintained at about 13°C. After 3 weeks, the ducklings can be kept at room temperature. When brooding, we must observe the performance of young ducklings. The ducklings are evenly distributed in the brooding room, indicating that the temperature is appropriate. If the ducks gather together or gasp, it means that the temperature is low or high. Ducklings use day and night light at 1-7 days of age. After 1 week, natural light is used during the day and lights are fed day and night. A 20-square-meter light bulb is usually installed in a 20-square-meter duck house. Humidity for brooding: 70% for 1 week, 60-67% for 2-3 weeks, and the humidity is preferably kept at 55%. The brooding house should be ventilated and ventilated frequently to keep the air fresh.
3, open food. When the ducklings start eating, they are fed with water first, and the first drinking water is treated with 0.1% potassium permanganate water. The dosage should be small to facilitate the elimination of meconium. After drinking water, the ducklings, which have been mixed with a little water, are sprinkled in plastic trays or sieves to allow ducklings to feed freely.
4, drinking water and feeding. Natural drinking water and free-feeding methods. At the same time feeding full price pellets and feeding green feed. After 1 week, green feed can account for about 20% of the diet, and after 2 weeks, it accounts for about 30% of the diet.
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