试验对日粮中添加高水平铜对雏鸭血液指标的影响进行了研究。
The study was conducted to examine the effect of high level dietary copper on blood parameters in ducklings by the methods of hemopathology.
研究饲粮中添加不同水平硫酸锰对笼养蛋雏鸭生产性能、营养物质利用率、血清生化指标以及组织矿物元素沉积的影响。
The experiment was conducted to study the performance, nutrient efficiency, blood serum biochemical traits and the mineral element in tissue of cage-rearing young ducks (one day).
为了使刚出生的雏鸭们认亲，初期的48小时十分关键，母鸭必须在场。在制作盔甲的过程中，重量问题十分关键。
For imprinting to occur in ducklings, it is critical a parent be present during the first 48 hours. The weight issue in armor construction was crucial.
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