In:
Clinical and Vaccine Immunology, American Society for Microbiology, Vol. 21, No. 9 ( 2014-09), p. 1350-1356
Abstract:
The change in growth performance resulting from a new modified live porcine reproductive and respiratory syndrome (PRRS) vaccine was evaluated under field conditions for registration with the government as guided by the Republic of Korea's Animal and Plant Quarantine Agency. Three farms were selected based on their history of PRRS-associated respiratory diseases. On each farm, a total of 45 3-week-old pigs were randomly allocated to one of two treatment groups, (i) vaccinated ( n = 25) or (ii) control ( n = 20) animals. A new modified live PRRSV vaccine increased market weight by 1.26 kg/pig (104.71 kg versus 103.45 kg; P 〈 0.05) and decreased mortality by 17% (1.33% versus 18.33%; P 〈 0.05). Pathological examination indicated that vaccination effectively reduced microscopic lung lesions compared with control animals on the 3 farms. Thus, the new modified live PRRS vaccine improved growth performance and decreased mortality and lung lesions when evaluated under field conditions.
Type of Medium:
Online Resource
ISSN:
1556-6811
,
1556-679X
DOI:
10.1128/CVI.00377-14
Language:
English
Publisher:
American Society for Microbiology
Publication Date:
2014
detail.hit.zdb_id:
1496863-0
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