genmark:hardage,外套颜色,freemartin www.genmarkag.com 877-766-3446 geneseek:parentage,parentage,外套颜色,温柔www.geneseek.com 402-435-0665遗传视觉:freemartin大理石www.igenity.com 877-IGENITY MMI GENOMICS,INC。:parentage,tru-polled,tru-color,tru-marbling,tru-tenderness www.breedtru.com 800-311-88808