Schlepers M, Gelauf J, Wertenbroek N, Nielen M
Department of Farm Animal Health. Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
Tijdschr Diergeneeskd. 2013 Jul 1;138(7):26-33.
Porcine Circovirus type 2 (PCV2) is a ubiquitous infection and major cause of production loss for the pig industry. The aim of this study was to evaluate the effect of vaccination against PCV2 on technical results of pigs on an organic breeding and fattening farm, focussing on growth and mortality of weaned piglets and fattening pigs. The study was based on retrospective data between January 2009 and May 2011. During the study period, three subsequent vaccination strategies were used: 1. Stellamune One, 2. Stellamune One+CircoFLEX, 3. MycoFLEX+CircoFLEX. From these three periods, the corresponding management- and slaughterhouse data were analysed by an ANOVA-test. Due to few data in period 2 and an outbreak of Actinobacillus pleuropneumoniae during periods 2 and 3, these two periods were combined in one period and analysed by a two-sample t-test. Mortality of weaned piglets decreased with 3.6% (0.6 - 6.6%) (P0.023) in comparison to period 1 and average daily weight gain improved by 21 gram (7 - 34 gram) (P0.004) in periods 2 and 3. Mortality of fattening pigs was 2.3% (1.2 - 3.5%) (P0.001) less than in period 1 and corrected energy conversion rate improved 0.27 (0.05 - 0.49) (P0.017). There was no significant effect on slaughterhouse parameters. In conclusion, vaccination against PCV2 improved technical results of weaned and fattening pigs on this farm. The advantage of vaccination with MycoFLEX+CircoFLEX instead of Stellamune One+CircoFLEX is that the two FLEX-vaccines can be mixed and administered as a one shot vaccine, reducing work load and animal stressors.
猪圆环病毒2型（PCV2）感染广泛存在，是养猪业生产损失的主要原因。本研究旨在评估针对PCV2的疫苗接种对一家有机养殖和育肥猪场猪的生产指标的影响，重点关注断奶仔猪和育肥猪的生长及死亡率。该研究基于2009年1月至2011年5月的回顾性数据。在研究期间，采用了三种相继的疫苗接种策略：1. Stellamune One；2. Stellamune One+CircoFLEX；3. MycoFLEX+CircoFLEX。从这三个时期中，通过方差分析测试对相应的管理和屠宰场数据进行了分析。由于第2期数据较少，且在第2期和第3期发生了胸膜肺炎放线杆菌疫情，因此将这两个时期合并为一个时期，并通过双样本t检验进行分析。与第1期相比，断奶仔猪死亡率降低了3.6%（0.6 - 6.6%）（P<0.023），第2期和第3期平均日增重提高了21克（7 - 34克）（P<0.004）。育肥猪死亡率比第1期低2.3%（1.2 - 3.5%）（P<0.001），校正能量转化率提高了0.27（0.05 - 0.49）（P<0.017）。对屠宰场参数没有显著影响。总之，针对PCV2的疫苗接种改善了该猪场断奶仔猪和育肥猪的生产指标。与Stellamune One+CircoFLEX相比，使用MycoFLEX+CircoFLEX进行疫苗接种的优势在于这两种FLEX疫苗可以混合并作为一针疫苗接种，从而减少了工作量和动物应激源。
