Worm-free sheep
Citation
CTA. 1992. Worm-free sheep . Spore 38. CTA, Wageningen, The Netherlands.
Abstract/Description
A tropical breed of white hair sheep, St Croix, shows a remarkable immunity to intestinal worms. Within four to six weeks the lambs have developed almost complete resistance. Scientists at the Agricultural Research Service in Beltsville USA, have...
Open Access