STRAW FOR THE PRESERVATION OF A PREDETERMINED DOSE OF LIQUID-BASED SUBSTANCES, IN PARTICULAR DILUTED ANIMAL SEED; DILUTION MEDIUM FOR GIVING SUCH A SUBSTANCE; AND SYSTEM COMPRISING THEM

摘要

The straw comprises a tube (11) extending between a first end and a second end and comprises a gas-permeable and liquid-tight plug, which plug is disposed in the tube (11) near its first end and extends between a first end facing the first end of the tube (11) and a second end facing the second end of the tube (11). The cap comprises a member (14) impregnated with multivalent cations (22) at least in the vicinity of a first end facing the second end of the tube (11). The liquid diluting medium is provided to give by mixing, under predetermined conditions, the liquid-based substance (21). It contains an alginate (23) in solution. The system comprises the straw and the liquid medium.