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GPS the Pneumonia Problems in Your Dairy Calf Enterprise

Published: May 13, 2009
Source : University of Minnesota Dairy Extension
Some farmers use a tractor-mounted Global Positioning System (GPS) - a constellation of earth-orbiting satellites - to help determine how much fertilizer and herbicide to apply in a specific location in a field when combined with other information such as soil samples, moisture content, and weed density in a computer spreadsheet.  It is also used to measure acreages and field slope, and identify field boundaries.  One Oregon State University research study has been using GPS collars on animals to collect information on each animal's location, with the date and time, every 30 seconds.  If you have been in a vehicle with a GPS system and you get off course, an automated voice announces the system is "recalibrating" to get you back on track.  GPS is helping producers to make good management decisions by developing a plan backed up by good data to help steer them in the right direction, keeping them on course. 
A study was conducted in 2007 by the USDA APHIS National Animal Health Monitoring System on "Dairy Cattle Health and Management Practices in the U.S." (published September 2008).  Results showed the percent of unweaned dairy heifers having respiratory disease (pneumonia) on U.S. dairy farms was 12.4%. Only 5.9% of weaned heifers were affected with respiratory disease.  However, the percentage of unweaned heifer deaths caused by respiratory problems was 22.5%.  For weaned heifers, respiratory disease was the single largest cause of death at 46.5%.
Early identification and treatment of pneumonia are important.  Calves that develop chronic pneumonia seldom recover completely.  The sickness has a significant impact on the growth and future productivity of the replacement heifer.  It is essential that the factors causing this illness be addressed.  So maybe it's time to "GPS" your pneumonia situation.  Not by using a satellite (maybe someday!), but by gathering data, analyzing it, and working with your veterinarian.  Then putting a plan in place to 'stay on course' to reach your destination of minimizing pneumonia incidences. Here are some ways to 'recalibrate' to get on the right track: 
  • Know the clinical signs of pneumonia - nasal discharge; body temperature of >105.8° F; decreased appetite; watery and/or bloody diarrhea; cough, labored breathing; head tilt; umbilical or joint swelling; weakness; and the inability or reluctance to rise. 
  • House calves separately - calves should not have contact with adult cattle or commingle with sick animals.  Older and younger calves should not have physical contact during the first 3 to 4 months of life.  Group post-weaned calves by age and size with 3 to 5 animals per group.  If an outbreak of pneumonia develops, newly-born calves should be reared in a separate facility.
  • Calf comfort - calves should not be housed in facilities that fluctuate in temperature, are under-bedded, warm, damp, humid or poorly ventilated (exposed to noxious gases, drafts, dusts and molds in the air).  This environment is high in viruses and bacteria, which put calves at significant risk for developing pneumonia. Use switches, thermostats and timers so the environment is always being controlled.  High humidity makes calves damp and sick.  Optimal relative humidity is around 65-75% for calf housing.  
  • When do calves get pneumonia? - It starts with the dam.  Good care, nutrition and housing from the pre- to post-calving period are important to help control pneumonia in new born calves.  In general, problems that occur within 5 days of birth usually have their source from the dam or the calving environment. Whereas after 7 days of age, problems develop from a source in the calf's environment.  Remember, pneumonia isn't just a post-weaning problem.  Its origin and opportunities to prevent it can begin even prior to weaning and as early as 2 weeks of age.
  • Early identification of sick calves- Early morning rectal temperature that exceeds 103° F for two successive mornings or is accompanied by slow, reduced or no milk intake at feeding can be an indicator of an on-coming problem.  Take the temperature at the same time everyday for the first week of life or the period considered as the most common for pneumonia in your operation.  As an aid in early detection of pneumonia, consider using a "Calf Respiratory Scoring Chart".  (See chart included with article.)  This chart, including photos, can be found at: http://www.vetmed.wisc.edu/dms/fapm/fapmtools/8calf/calf_respiratory_scoring_chart.pdf, or contact your local extension office to print the chart for you.
In conclusion, using a "GPS" approach by gathering information on management practices and protocols, and developing and implementing a plan can help the calf raiser stay on course to prevent pneumonia (and even other diseases) and attain target goals for growth and frame size in the heifer enterprise.
 
Calf Respiratory Scoring Chart
Farm Name:  ____________________________________
Date:  _______________
Calf Scores          (Total respiratory score: 4 – watch, 5 or more – treat)
Animal ID
Age
Temp-erature
Nasal discharge
Cough – spontaneous or induced
Eye or ear
Total respiratory score
1541
27 d
2
0
1
1
=  4
 
 
 
 
 
 
 
 
Calf Health Scoring Criteria
0
1
2
3
Rectal temperature – °F
100-100.9
101-101.9
102-102.9
≥103
Cough
None
Induce single cough
Induce repeated coughs or occasional spontaneous cough
Repeated spontaneous cough
Nasal discharge
Normal serious                      discharge
Small amount of unilateral cloudy discharge
Bilateral, cloudy or excessive mucus discharge
Copious bilateral mucopurulent discharge
Eye scores
Normal
Small amount of ocular discharge
Moderate amount of bilateral discharge
Heavy ocular discharge
Ear scores
Normal
Ear flick or head shake
Slight unilateral droop
Head tilt or bilateral droop
Developed by Dr. Sheila M. McGuirk - U of WI School of Veterinary Medicine.
 
By Neil Broadwater, Extension Educator-Dairy
Dairy Connection Articles - University of Minnesota Dairy Extension
Source
University of Minnesota Dairy Extension
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Yusuf Ziya Cakir
2 de enero de 2013

First 20 days of calves in their lives and 20 days after weaning are very important periods regarding to calf pneumonia.
Because generally calf diarrhea occurs in the first three weeks of calf's life and causes immune system malfunction and pneumonia agents can find the chance to infect calf. As we know they are in enviroment and always ready to cause disease. Pasteurella is the main cause of the pneumonia and generally works with other infective agents (virus, bacteria) and mix infections occurs. This can be prevented by using Pasteurella vaccines and hygienic precautions.
After weaning calves are generally taken to group barns and different diets used in their feeding which causes stress and immune system supression and pneumonia cases generally increase in this period. Calves must be housed in small groups and feed changes should be done slowly and softly.
If we manage these periods as best as we can, Pneumonia cases decrease at he same ratio.

Ravinder Grewal
15 de mayo de 2009
In addition to the points listed in the article for prevention of pneumonia, feeding of clostridium within first 2 hours of birth is also important. The calves weaned from birth are more susceptible as compared to calves that are allowed suckling for first few days.
Hafiz Wasi Muhammad Khan
13 de mayo de 2009
Main cause of mortality and stunted growth in young calves is pneumonia. As per one survey 50% death in young calves in subcontinent is this disease. Protection of calves from scour n pneumonia plays an important role in Calf management strategy. I feel this is a very good article from extension deptt of the university and if farmers follow the guide lines given in the article can help in reducing calf mortality and lowering econonmical loss in treatment of pneumonia affected calves in the herd.
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