How to Determine If a Sow Is Pregnant: A Detailed Guide to the Urine Test Method

Urine test method for determining whether a sow is pregnant: take about 10 ml of the sow's morning urine 5 to 10 days after mating, place it in a test tube and measure the specific gravity (it should be between 1.01 and 1.025), then add 1 ml of 5% to 7% iodine tincture, heat it over an alcohol lamp, and when it reaches the boiling point, observe the color change. If the sow is pregnant, the urine turns red from top to bottom; if she is not pregnant, the urine is pale yellow or brownish green, and the color disappears after the urine cools. The fourth method is to use an ultrasound detector, which has a high accuracy rate and can effectively reduce the rate of empty sows.