大型规模化猪场中PRRS的管理： 后备母猪 和生长猪 - Rebecca C. .pdf

PRRS management in a large integrated system: Gilts and growing pigs 大型规模化猪场中PRRS的管理：后备母猪 和生长猪 Rebecca C. Robbins, DVM, PhD 瑞贝卡·罗宾斯博士 Seaboard Foods, Sr. Production Veterinarian 美国海岸食品有限公司，高级生产兽医 Leman China 2018 2018 年李曼中国养猪大会 PRRSv outbreaks in US shows cyclical pattern, 2009-2018 (From MSHMP Weekly Report) 2009-2018年美国PRRSV爆发显示周期性模式 （来自MSHMP周 报） Current Status of PRRSv in US (From MSHMP Weekly Report) PRRSV在美国的现状（来自MSHMP周报） Abrupt increase in use of modified live (MLV) PRRSv vaccine occurred in 2013 as a result of novel research on PRRSv control strategies 由于对PRRSv控制策略的新研 究，2013年发生了改良活体 （MLV）PRRSv疫苗使用量的突 然增加 However, estimated cost of PRRSv to US swine industry continues to increase. 然而，PRRSv对美国养猪业的估计成本产生的影响继续增加。 Vaccine a central part of PRRS management in Seaboard system prior to 2016 2016之前，疫苗免疫是Seaboard系统中PRRS管理的核心部分 • Internally multiplied gilts 内部成倍增长的后备母猪 – Multipliers were PRRS positive and frequently unstable – 成本增加的猪只是PRRS阳性且经常不稳定 – PRRS status monitored quarterly (oral fluids) 每季度通过口腔液监测PRRS状态 • Positive test did not impede gilt entry 阳性测试并没有阻止PRRSV进入后备母猪 • Ingelvac ATP 1cc at 2 weeks post-weaning and 26 weeks of age 断奶后2周和26周龄使用1剂量的 Ingelvac ATP • Sows 经产母猪 – Outbreaks 爆发 • 2% Miscarriages on or above 70 days of gestation and positive PCR test • 在妊娠70天或以上发生 2 ％的流产和PCR （聚合酶链反应）检测阳性 – Ingelvac ATP - 1cc - 2 times - 30 days between vaccinations Ingelvac ATP - 1cc - 2次-疫苗接种间隔30天 – PWM 14% （断奶后多系统消瘦占比14%） • Growing pigs 生长猪 – 2 weeks post-weaning 断奶后两周 – Ingelvac MLV - 1cc – Livability 94% 存活率94% Introduction of highly virulent PRRS strain to Oklahom