一种大鼠笼具的改进及其饲养效果的观察

A Modification of Rat Cage and Its Feeding Efficacy

目的设计半网式饲养盒,探讨半网式饲养大鼠的可行性。方法R5型饲养盒改进后,以普通饲养盒和半网式饲养盒饲养大鼠,计算换盒工作量,计算动物生产能力,按GB14925-2001测定不同时间盒内氨气浓度。结果1)半网式饲养与盒式饲养相比可减少动物垫料用量50%,工作量可减少75%以上。2)两种饲养方式用于大鼠饲养,效果没有区别。3)两种饲养方式在换盒后的前4天氨气浓度几乎无差异,5 d以后,半网式饲养方式的饲养盒内氨气浓度低于盒养式饲养方式。结论半网式饲养方式有其独特的优势,既能取得盒式饲养方式的饲养效果和适用范围,又能具备网式饲养方式节约垫料和减少工作量的目的。

Objective To design a half-net type feeding box and evaluate fhe feasibility of this feeding mode for rodents. Methods To modify and improve R5 box into a half-net type box, and to compare rats feeding results between the common feeding type and half-net type. The workload of changing box and animal production ability were calculated. According to the methods of GB14925-2001, the ammonia concentration inside the boxes of common feeding type and half-net type was measured and analyzed. Results 1 ） Using the half-net type feeding the bedding usage and workload were reduced by 50% and 75%, respectively, in comparison with those by common box feeding method. 2） No difference was observed between the two feeding types in regard to rat production capacity. 3 ） No significant difference in ammonia concentration of the two feeding types was observed during the first 4 days after changing the box, but after 5th day, the ammonia concentration inside half-net type boxes was lower than that in common feeding boxes. Conclusion Compared with routine feeding type boxes, there are apparent advantages of the haft-net type feeding boxes, which can well satisfy the feeding needs and obtain the same feeding results, while considerably reduce bedding usage and workload.