Thirty-nine and 47 randomly selected Colorado cow-calf operations participated in the National Animal Health Monitoring System (NAHMS) during rounds 2 (October 1986 to September 1987) and 3 (October 1987 to September 1988), respectively. Data on the incidence of disease conditions within each herd
The aims of this study were to describe when and how vaccines are administered during the production cycle in cow-calf herds in western Canada, as well as the factors that influence vaccine usage as reported by producers. The most commonly used vaccines were bovine viral diarrhea virus/infectious
اكتب أحد الأعراض أو المرض واقرأ عن الأعشاب التي قد تساعد ، واكتب عشبًا واطلع على الأمراض والأعراض التي تستخدم ضدها. * تستند جميع المعلومات إلى البحوث العلمية المنشورة