【摘 要】
：
Objective The aim of the study was to explore and contrast the immune efficacy of four Mycoplasma hyopneumoniae vaccines on antibody level, the incidence of respiratory tract disease, lung lesion, fee
【机 构】
：
Institute of Amimal Husbandry and Veterinary, Hainan Agricultural Academy, Haikou, Hainan, 571100, C
【出 处】
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The 6th Meeting of the Asian Organization for Mycoplasmology
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Objective The aim of the study was to explore and contrast the immune efficacy of four Mycoplasma hyopneumoniae vaccines on antibody level, the incidence of respiratory tract disease, lung lesion, feed conversion rate, average daily gain (ADG), and mortality rate, etc, in pigs.Methods 482 health piglets were randomly divided into four vaccinated groups (94 piglets in each A, B, C, D group and 106 piglets in control group).
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