Dr. Johnson: Why Haven't There Been Any Improvement In Reducing The Incidence Of Blue Ear Disease?

- Jul 26, 2018-


Clayton Johnson, Ph.D., Ph.D., graduated from the University of Illinois, USA, and is currently the Director of the Department of Environmental Protection at Carthage Veterinary Services LLC.

Porcine Reproductive and Respiratory Syndrome (PRRS) is a viral infection that severely affects the global swine industry, characterized by sow reproductive disorders and respiratory diseases in various stages of growth. The disease has been in the first 30 years of history in North America and Europe. It has a history of 20 years in China. It has not yet achieved substantial control on a global scale. It is currently endemic in many countries. The impact and harm of the pig industry remains.

Dr. Clayton Johnson gave a keynote report on why we have not made significant progress in controlling the occurrence of PRRS at the Lehman Pig Conference in the United States. This report is a review of PRRS. In the actual production, the pig farm can learn from the report's ideas, check and fill the gaps, improve its own short board, and exert its own strengths to better control the PRRS of the farm, so that the farm can continue to produce stably.


This report focuses on summarizing important ideas for controlling the occurrence of PRRS:

1. Doing a good job in the biosafety of the farm is the first;

2. Implement and implement various management tasks or tools on the farm and continuously improve such management measures as “MCREBEL” (attached at the end of the article) and apply new technologies or tools in a timely manner;

3. Pig farm producers should have a long-term continuous investment concept in PRRS prevention and control, so as to better control the occurrence of PRRS.


MCREBEL management measures

Do not foster foster care for piglets born 24 hours after birth

1 Minimize the number of foster piglets and do not carry out foster care unless necessary;

2 Do not cross-foster in order to pursue uniform piglet weight or the same piglet sex;

3 If there are medium or large piglets that must be fostered, they must be sent to other sows with consistent body shape and good lactation ability;

4 When dispensing nipples, give priority to the smallest piglets.

Keep the piglets in the nest of your biological mother as much as possible

1 If you can't do it, leave the piglets in the sow nest that can provide colostrum as much as possible;

2 Do not transfer piglets across the pig house, strictly implement the production process of all-in and all-out, each nest is a full-in, all-out unit.


Eliminate piglets that are seriously ill, dying, and in poor condition

1 When weaning, the piglets that are underweight, are difficult to survive during the weaning period, and the piglets that are in poor condition are eliminated;

2 sick piglets will be eliminated immediately if they are not effective after treatment;

3 piglets that are particularly thin, hungry, lame, especially light, have a particularly long coat, and are chronically ill, are eliminated immediately;

4 A piglet is weaned, and it takes a nipple from the next smaller, healthier piglet.

Measures to improve the survival rate and growth performance of piglets during weaning

1 carefully divided by weight;

2 Arrange the smallest piglets in the place where there is no warmth and no thief;

3 artificial feeding of the smallest piglets, 4 times a day for 5 consecutive days;

4 to adjust the diet according to the weight of the piglet, not in the pig house;

5 provide heating lamps or plastic cushions for weak piglets;

6 On the first day, lower one nipple drinker in each column, get stuck, let it flow, and help the pigs find the drinker.