三批1500羽肉鸭雏鸭母源抗体消长规律的试验表明，雏鸭母源抗体水平高低及维持时间长短与父母代抗体水平高低呈正比。
The dynastic indicated that the maternal antibody level and its maintenance time of 1500 meat ducklings from three groups paralleled to that of their parents.
八月深秋天气变凉，雏雁羽薄不耐风寒，思念我温暖的家乡，飞向那遥远的南方。
It is getting cold in the late August. Little wild goose can't bear cold. Missing my warm hometown, flying to the south far away.
八月深秋天气变凉，雏雁羽薄不耐风寒，思念我温暖的家乡，飞向那遥远的南方。
It is getting cold in the late August. Little wild goose can't bear cold. Missing my warm hometown, flying to the south far away.
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