双层禽用饲育隔离器的应用研究
Application of double-layer poultry feeding and rearing isolator
目的 测试一种新型双层禽用饲育隔离器的应用效果,验证其在实验动物饲养中的可行性与优势,为提升实验动物饲养效率和福利水平提供参考。 方法 首先测试隔离器内部环境,分为双层隔离器组和普通隔离器组,每组3台,清洗消毒后运转24 h,测定并对比其内部环境指标(沉降菌、洁净度、温湿度、照度、噪声、静压差、换气次数及气流速度等)。随后选取公鹌鹑60只、母鹌鹑240只,随机平均分为双层隔离器组和普通隔离器组,每组3个重复(公母比均为1∶4),饲养至36周龄,统计其产蛋率、受精率、平均体重,以及隔离器内氨气浓度与空间利用率,对比分析两组的饲养效果。 结果 双层隔离器内部环境指标均符合GB 14925-2023《实验动物 环境及设施》标准,且其最大气流速度差极显著低于普通隔离器组(P<0.01),气流分布更均匀稳定;两组SPF鹌鹑在产蛋率、受精率和体重方面均无显著差异,双层隔离器组的氨气质量浓度(0.91±0.06 mg/m³)显著低于普通隔离器组(1.76±0.38 mg/m³),且空间利用率(82只/㎡)是普通隔离器(41只/㎡)的2倍。 结论 双层禽用饲育隔离器符合GB 14925-2023《实验动物 环境及设施》国家标准,且较传统隔离器具有内部环境稳定、空间利用率高等优势。
Objectives The effects of applying a novel double-layer poultry feeding and rearing isolator were studied to verify its feasibility and advantages in feeding laboratory animal and provide a reference for improving the feeding efficiency and animal welfare of laboratory animal. Methods The internal environment of the isolator was tested by dividing the isolators into a double-layer isolator group and a conventional isolator group, with three units in each group. After cleaning and disinfection, the isolators operated for 24 hours, and then their internal environmental indicators, including settling microbes, air cleanliness, temperature and relative humidity, illumination, noise, static pressure difference, air change rate, airflow velocity, etc., were measured and compared. 60 male quails and 240 female quails were randomly and equally divided into the double-layer isolator group and the conventional isolator group, with 3 replicates per group (male-to-female ratio of 1∶4 in each replicate). The quails were kept until they reached 36 weeks of age, their egg production rate, fertility rate, average body weight, the ammonia concentration and space utilization rate inside the isolators were recorded. The feeding effects of the two groups were compared and analyzed. Results All indicators of internal environment in the double-layer isolator met the GB 14925-2023 standard, and the maximum airflow velocity difference was extremely significantly lower than that in the conventional isolator group (P<0.01), indicating more uniform and stable airflow distribution. There was no significant differences in egg production rate, fertility rate, and body weight between the two groups of SPF quails. The ammonia concentration in the double-layer isolator group (0.91±0.06 mg/m³) was significantly lower than that in the conventional isolator group (1.76±0.38 mg/m³), and the space utilization rate (82 birds/m²) was twice that in the conventional isolator (41 birds/m²). Conclusions The double-layer poultry feeding and rearing isolator meets GB 14925-2023 standard, with the advantages of stable internal environment and higher space utilization compared to conventional isolators.
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国家重点研发计划项目(2022YFF0711200)
中央引导地方科技发展专项(ZY04JD03)
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