Dairy Herd Improvement Laboratory In 1994, two representatives of the American Dairy Goat Association requested the GIGR to establish a Dairy Herd Improvement Association (DHI) laboratory specifically for goats. In August of 1995, the DHI Laboratory for Goats was certified by the National DHI. The Langston DHI Laboratory operates under the umbrella of the Texas Dairy Herd Improvement Association.
Sample Box One of the first actions of the DHI lab was to design a sample shipment box that was easy to use. The clear plastic pouch on the top of the box contains an index card that has the address of the DHI lab on one side and the producer's address on the other. When it is time to mail the shipment box, the index card can be easily flipped to reflect the correct destination.
Open Sample Box Another design concept was to tailor the size of the box to reflect the average herd size of our clientele. The vast majority of our clients have small herds with less than 20 milking does. The clear plastic pouch on the lid contains the paperwork for the test day samples.
Sample Vials Each sample vial contains a preservative (little orange pill), which gives the milk sample an orangish-pink color. The preservative prevents bacterial growth and allows the milk sample to be shipped without refrigeration.
Samples in Rack The milk samples are removed from the shipment box and placed in a rack. The paperwork is removed from its pouch and verified for completeness.
Samples in Water Bath The rack of milk samples are then placed in a water bath and raised to the correct temperature.
Water Bath Temperature The correct temperature for the milk samples is the same as the body temperature of the goat, which is 103º to 104º F.
Foss Integrated Milk Testing After the samples have reached 103º to 104º F, they are then analyzed using Foss Integrated Milk Testing. The MilkoScan 4000 analyzes for fat, protein, lactose, and solids-nonfat composition and the Fossomatic 5000 analyzes for somatic cell counts.
DairySTOR 2000 The milk component database is then read into DairySTOR 2000, Texas DHIA software, and the milk weights and events are inputted. DairySTOR 2000 can generate several different types of reports to assist the dairy goat producer with their management decisions.