魏氏杆菌

To prevent cross-contamination of the virus from different animals, the feed eaten by the breeding hens cannot contain animal products; they cannot test positive for Salmonella enteritidis, Salmonella pullorum or Salmonella typhi, nor for avian flu or avian leukosis viruses; and they must also be free of external hormones and antibiotics.

魏逸之称呼这些是「clean eggs」──为了避免不同动物体内的病毒交互感染，种鸡所吃的饲料不得含有动物成分；它们体内不得检出肠炎沙门氏杆菌、鸡白痢沙门氏杆菌、伤寒沙门氏杆菌，以及A型禽流感、禽白血病等病毒，也不得有贺尔蒙与抗生素的残留。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。