老番鸭收购商-西彦孵化厂货源足-宜昌番鸭收购商

冬季鸭苗，如何预防疾病，gan是一种快速传播和高度致命的病毒传播的雏鸭，病原体是鸭瘟病毒。它的特点是病程短，大番鸭收购商，且角弓逆转的临床表现，病变主要是g胀和出血点。在自然条件下，该病主要发生在3周龄以下的雏鸭中。成年鸭子可以在没有发病的情况下运行，但可以通过粪便排出，老番鸭收购商，污染环境和染色的易感鸭子。该病一年四季都会发生，喂养和管理不当，鸭舍温度过低，密度过高，卫生条件差，缺乏维生素和矿物质可以促进疾病的发生。本病病病潜伏期短，仅1-2天。小鸭子突然生病了。起初，病鸭表现出，颈部变窄，翅膀下垂。它无法与团队一起移动，眼睛半闭，打瞌睡和共济失调。该病发生在半天至一天，并发生全身抽搐。身体倒在一边，两只脚反复踢踢，大约十分钟就死了。头部回到背部，角的解剖姿势称为“后颈部疾病”。痰和爪的是深紫色，一些生病的鸭子在它们之前是黄色，白色和绿色和粪便。

The cold insulation performance of the duck house should be excellent. The roof should have ceiling or heat insulation. The north wall should not leak air. The height of the eaves is 2.6~2.8 meters. The ratio of window to ground area is 1:8. The area of the south window is comparable. The north window is 1 times larger， the south window is 60-70 cm above the ground， and the north window is 1 to 1.2 meters high from the ground. In order to make the summer well ventilated， the north side can open the foot and window. But without glass， only iron bars or lead wire mesh are installed to prevent animal damage. In the cold season， it is sealed with tarpaulin or plastic cloth to prevent air leakage. In addition to setting up drainage ditch， there is also a place for breeding ducks to lay eggs in the evening. Single-row type duck house， the walkway is on the north side， the drainage ditch is next to the walkway， the barbed wire or wooden strip is covered， the drinker is placed on the wire mesh， and the south side is on the side of the wall. The terrain is slightly higher， and the nest box can be placed. The egg laying box is 30 cm wide and 40 cm long. It is nailed with wooden boards， without bottom，宜昌番鸭收购商， and the front is lower for the ducks to enter and exit. The other three sides are 35 cm high， and the bottom of the box is covered with wood chips or short clean mats. Each box can be used for 3 egg type ducks or 4 meat type ducks.xx

孵化效果的检查和分析每次孵化后，应对孵化结果（孵化卵的孵化率，受精卵的孵化率）进行统计和分析，总结，积累经验，提高孵化技术水平。一般来说，人工养殖的鸭子，无头不超过5％，死胚卵不超过3％。如果死胚的比率太高，主要是由于蛋的储存不当，孵化温度高或低。如果过多，主要是由于鸭子中雄性和雌性的比例不合理，繁殖鸭的病情，正番鸭收购商，雄性雄性不强，缺乏排卵能力。死胚卵不超过5％是正常的，过多的死蛋通常是由于繁殖鸭繁殖不良，胚胎营养不足，孵化温度不合适和通风不良造成的。在孵化期结束时，死胚蛋为6％-7％。如果死胚蛋太高，中期和晚期的孵化条件可能较差，主要表现为死胎更多。收集鸭蛋，从收集到孵化，以尽量减少有害的人为干扰，以确保更高的孵化率。