Beskow P, Norqvist M, Wallgren P
Swedish Animal Health Service, Vännäs, Sweden.
Acta Vet Scand. 1998;39(1):49-60. doi: 10.1186/BF03547806.
The correlation between climatic parameters with one another in fattening units and the influence of environmental factors on lung lesions registered at slaughter were studied in 6 integrated herds with continuous production systems. In addition, the influence of environmental parameters on the spread of Mycoplasma hyopneumoniae and Actinobacillus pleuropneumoniae (serotypes 2 and 3) and on the productivity was monitored in 2 specialized fattening herds with strict batch production. The outdoor temperature was positively correlated to the indoor temperature, but negatively correlated to the relative humidity and the concentration of carbon dioxide in the stables. These indoor parameters were also correlated to each other. The concentration of ammonia was not correlated to any other climatic parameter. No correlation between the climatic parameters measured and the prevalences of pneumonia and pleuritis registered at slaughter was shown. The rapidness in spread of mycoplasmosis seemed to be more dependent of the antibody status of the pigs on arrival than on the climate of the units. In contrast, a correlation between the climatic parameters and the spread of the less contagious infection (Actinobacillus) was indicated. The influence of the climatic parameters on the daily weight gain was not ensured.
在6个采用连续生产系统的一体化猪群中，研究了育肥单元内气候参数之间的相关性以及环境因素对屠宰时记录的肺部病变的影响。此外，在2个采用严格批次生产的专业化育肥猪群中，监测了环境参数对猪肺炎支原体和胸膜肺炎放线杆菌（血清型2和3）传播以及生产力的影响。室外温度与室内温度呈正相关，但与相对湿度和猪舍内二氧化碳浓度呈负相关。这些室内参数之间也相互关联。氨气浓度与任何其他气候参数均无关联。所测气候参数与屠宰时记录的肺炎和胸膜炎患病率之间未显示出相关性。支原体病传播的速度似乎更多地取决于猪到场时的抗体状态，而非育肥单元的气候。相比之下，表明气候参数与传染性较低的感染（放线杆菌）的传播之间存在相关性。气候参数对日增重的影响未得到证实。
