Milking system with detection system

A milking system comprising a milker including a milking control device the milker arranged for milking milk from a dairy animal, a milk line fluidly connected to the milker, and a sampling and analysis device arranged to take a sample of the milk from the milk line and to analyse the sample,

• wherein the milking control device is arranged to control a management of the dairy animal based on a result of an analysis of the sample, wherein the sampling and analysis device comprises
• a control unit for controlling the sampling and analysis device;
• a sample supply line connected to the milk line and arranged to receive, under the control of the control unit, said sample from the milk line;
• a pump arranged to control a flow of the sample;
• and
• a cassette including
• a first liquid connector,
• a sample receiving line releasably connected to the sample supply line by the first liquid connector in the cassette, wherein the sample receiving line is arranged to receive the sample from the sample supply line
• a tape reel including a tape wherein the tape is wound around said tape reel, the tape comprising a base tape layer to which a series of separate reagent pads are arranged to provide a detectable response to at least one substance, and
• a dosing device controlled by the control unit and arranged to provide a droplet of the sample onto a reagent pad of the series of separate reagent pads, the dosing device comprising a nozzle fluidly connected to the sample receiving line and a nozzle mover arranged to move the nozzle in at least a longitudinal direction;
• the sampling and analysis device further comprising a tape mover arranged to move and to unwind the tape from the tape reel under the control of the milking control device;
• an optical radiation source for emitting optical radiation;
• an optical sensor arranged to detect optical radiation from the reagent pad supplied with said droplet of the sample, and to analyse the detected optical radiation to provide an indication of a presence or of a concentration of said at least one substance in said droplet, droplet;
• and
• a pump drive external to the cassette and releasably operably connected to the pump device for driving the pump device,
• wherein the cassette is replaceably received in the milking system, and
• wherein the control unit is arranged to drive the pump with the pump drive in three stages comprising a first stage in which the sample receiving line is opened from a closed state to an open state by a protrusion, a second stage in which the protrusion moves a liquid through the sample receiving line towards the nozzle, and a third stage in which the protrusion meters out the liquid onto a reagent pad of the series of separate reagent pads.