Posted by Dr. Steve Dudley on June 11 2009 10:50

All cows/heifers/bulls (i.e. ALL animals on the farm) need to be tested. Take an ear notch sample from each animal. Notch the ear at the bottom of the ear as per the following diagram. The ear notch needs to be small enough to fit into the container provided (about the size of the picture below). Place the notch in the container provided. These containers contain formalin. Make sure the notch is completely covered by formalin. Label the container with the ID of the animal tested. Conta... [More]

Posted by Dr. Steve Dudley on June 10 2009 16:34

At entry: Synovex C or Ralgro (can start at 45 days of age) Day 50: Synovex S Day 150: Revalor S or Synovex Plus Day 250: Slaughter If it is going to be more than 250 days between entry and slaughter you have two options: Wait to put the first implant in. Implants are more important at the end of the growth period than at the beginning. Add another implant.  

Posted by Dr. Steve Dudley on June 10 2009 13:26

How does the hormone in the CIDRs affect the cow's reproductive cycle? The plastic CIDR is impregnanted with a hormone called progesterone. This is the hormone that a cow produces when she has a corpus luteum, or is mid-way through her estrus cycle. When this hormone is present a cow will not come into heat. When the progesterone is removed, either by removing the CIDR or giving a prostaglandin shot (i.e. Lutalyse) a cow will come into heat if she is cycling. What is the CIDR protocol? The ... [More]

Posted by Dr. Sara Hooge on June 10 2009 09:35

Emerging disease in the cattle industry. Colonization of M. bovis in the calf. Risk Factors Mixed source calves Different age groups Young claves with exposure to other calves between 3 and 8 weeks of age Oral treansmission during transportation by commingling Presence of 1 positive animal in a group Late winter and early spring High moisture environment Antibiotic treatment research – Dr. Ricardo Rosenbush, Iowa State MIC determined by respiratory M. bov... [More]

Posted by Administrator on June 25 2007 11:02

CURRENT STATUS OF ANTHELMINTIC RESISTANCE IN GASTROINTESTINAL NEMATODES OF CATTLE AND POTENTIAL IMPACTS ON CATTLE PRODUCTION Author: Louis C. Gasbarre, PhD. USDA-ARS I work with the Agricultural Research Service of the USDA in Beltsville, Maryland. We have been looking at some alternative ways to control internal parasites in cattle. I want to talk to you about what parasites do and what are we currently doing to control them; some studies that are indicating that some of the things we have b... [More]

Posted by Administrator on January 14 2006 08:14

Biosecurity Major diseases that can enter your farm with a bull: BVD Salmonella Mycoplasma Hairy Heel Warts Trichomonas Johnes Protect yourself If you have a disease eradication plan or vaccination program in place make sure new bulls meet criteria Have a checklist of questions to ask when purchasing a bull Vaccination status History of disease on the farm genetic merit Isolate bulls on arrival Vaccinate and deworm on arrival and booster 2-3 weeks before exposing th... [More]

Posted by Administrator on January 01 2003 00:00

Heat Stress Beef Newsletter 2nd Quarter 2003 In preparing for summer feeding, consider these aspects to create an adequate water source. Space: When the weather gets hot, cattle like to congregate around the water sources, so we need to make sure there is plenty of space available for all cattle to eliminate crowding and bunching. When cattle bunch up, it decreases the rate of evaporation, compounding the effects of the heat. The easiest way to do this is to add additional temporary tanks... [More]

Posted by Dr. Steve Dudley on May 30 2002 10:42

Why Do We Care About Parasites? In a nationwide USDA survey, producers were asked to rank the most significant economic challenge facing cattle producers. Internal parasites (67%) were ranked second only to external parasites (79%) as the most important Internal Parasites: Damage and Effects on Animals Damage abomasum Damage intestine Disrupt nutrient digestion and absorption Diarrhea Poor response to respiratory vaccination reduced carcass weight reduced carcass quality reduce... [More]