Containment systems and components for animal husbandry: nested cage bases
Provided are animal containment systems and components, including single-use animal containment cages and modular rack units. Also provided are methods for assembling and using components of the animal containment systems.
1. A nested set of rodent containment cage bases, comprising:
a plurality of rodent containment cage bases which each have a bottom and a wall or walls, which are about 75% nested or more; which are constructed of a polymer of a thickness of 0.01 inches to 0.03 inches; which each comprise at least one corner or edge in the cage base interior which is accessible to a rodent that can be contained in the cage base, and which is defined by surfaces having an angle α greater than 180 degrees and less than 360 degrees, wherein all corners or edges of the cage bases which are in the interior of the cage bases, which are accessible to a rodent that can be contained in the cage base, and which are defined by surfaces having said angle α measured in the cage base interior, have a minimum radius φ with φ=0.25/(tan((π/360)(360−α))) inches.
2. The nested set of rodent containment cage bases of claim 1 , wherein the cage bases are about 80% nested or more.
3. The nested set of rodent containment cage bases of claim 1 , wherein the cage bases are about 85% nested or more.
4. The nested set of rodent containment cage bases of claim 1 , wherein the cage bases are about 90% to about 95% nested.
5. The nested set of rodent containment cage bases of claim 1 , wherein the wall or walls taper inwards towards the bottom.
6. The nested set of rodent containment cage bases of claim 1 , wherein the each cage base comprises an indent or boss that butts a corresponding indent or boss of an adjacent nested cage base.
7. The nested set of rodent containment cage bases of claim 6 , wherein the indent or boss facilitates separation of the nested cage unit bases from one another.
8. The nested set of rodent containment cage bases of claim 7 , wherein the indent or boss further comprises edges or corners which are defined by a radius of 0.03 inches or less.
9. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is polyethylene teraphthalate.
10. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is polyvinyl chloride.
11. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is polyethylene.
12. The nested set of rodent containment cage bases of claim 11 , wherein the polymer is high-density polyethylene.
13. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is polyethylenefluoroethylene.
14. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is polystyrene.
15. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is high-density polystyrene.
16. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is an acrylnitrile butadiene styrene copolymer.
17. The nested set of rodent containment cage bases of claim 1 , wherein the polymer is polypropylene.
18. The nested set of rodent containment cage bases of claim 1 , wherein the wall or walls of each cage base are 0.01 to 0.02 inches thick.