Many dairy cows lumber along with chronic mammary gland infections that increase the number of infection-fighting white blood cells in their milk, especially during the dog days of summer. Milk quality is based on that cell count. Producers can’t sell milk with counts that exceed the legal limit. In the United States, that’s 750,000 cells […] Read more
Stories by United States Department of Agriculture
Sperm sexing dye increases accuracy
Sperm-sorting technology that could allow livestock producers to predetermine the sex of their animals has been significantly improved by the United States Department of Agriculture scientists who developed the original technology. Animal physiologist Lawrence Johnson developed the patented sperm sexing technology a decade ago. The method separates living female-producing X-chromosome sperm from male-producing Y-chromosome sperm […] Read more
