Timeliness of treating pneumonia

All of us have heard the advice, “If you are going to treat a sick calf, do it right.” Doing it “right” usually brings to mind using the proper drug at the prescribed dose for the required duration of treatment. However, did the phrase, “Do it right,” make you think of timeliness of diagnosis and treatment?

Indicators that treatment is not timely

The severity of symptoms at first treatment is the most obvious indicator of treatment timeliness. Consider all the calves you have treated for pneumonia in the past week, month or three months. If the majority of them had heavy nasal discharge, coughing, and temperatures above 103.5°accompanied by shallow breathing and elevated respiration rate, then diagnosis and treatment was probably later that desirable.

A second indicator is clustering of treatments. Go back to your treatment records. Do your records show that you frequently treat two or more calves on the same day (first treatments) and none on many other days? This often happens when we spot one seriously sick calf. While treating her we have an opportunity to observe other nearby calves. Among them are previously unobserved treatable cases.

Published reports comparing clinician versus calf raiser diagnosis rates for pneumonia show significant differences. That is, calf raisers diagnosed pneumonia later or completely missed diagnosing cases when calves had been diagnosed as clinically ill with pneumonia by the veterinarian.

Doing a better job of diagnosis and treatment

The first step toward improvement is to make a commitment to observe all the calves. Our tendency as care givers is to be in hurry. However, a small amount if time spent observing calves at feeding time can save many hours of treatment time later. It is important to remember that in just a few seconds if we know what to look for, we can make a valid assessment of a calf’s well being. Actually, anytime you are working with the calves (feed grain or water, bedding) this is an opportunity to watch for discharges from the nose or eye and/or lack of usual energetic behavior.

We are watching for:

  • Calf is slow to get up to eat.
  • Calf does not immediately begin eating vigorously.
  • Calf lingers in the milk bucket longer than others.
  • Calf has colored or opaque nasal discharge.
  • Calf coughs.

In whatever way fits our management system, when we see any of these symptoms those calves need to be marked for an additional health exam after feeding.

The second step toward better and timelier diagnoses of respiratory illness is to know what to observe and how to interpret what we see. A practical on-farm diagnostic guide is available at the University of Wisconsin Vet School address: www.vetmed.wisc.edu/dms/fapm/fapmtools/calves.htm

Once at this web site, scroll down to calves and click on “Calf Respiratory Health Scoring Chart.” The Calf Health Scoring Criteria give standards for assessing calf health. Especially helpful are the color pictures showing nasal discharge. The “normal” picture shows nothing more that a small amount of thin, clear, water-like liquid. In contrast, the picture for the most seriously ill calf shows a lot of discharge from both nostrils that is thick, opaque and discolored. The chart minus the pictures is:

0 1 2 3
Rectal Temperature


100-100.9 101-101.9 102-102.9 >103
Cough      
None Induce single cough Induced repeated coughs or occasional spontaneous cough Repeated spontaneous coughs
Nasal Discharge      
Normal serous 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 ocular discharge  Heavy ocular discharge
Ear Scores      
 Normal Ear flick or head shake Slight unilateral droop Head tilt or bilateral droop

Dr. McGuirk suggests assigning number values between “0” and “3” to your observations. When she gets a score of “Four” she marks this calf for observation the next day. A score of “five” rates immediate treatment. The most significant value of Dr. McGuirk’s observation guide is the benefit of achieving timeliness of treatment. Not to be undervalued, however, is achieving consistency from day to day and among caregivers.

Author

Sam Leadley

Sam Leadley
62 articles

Consultant on Calf/Heifer Management at Attica Veterinary Associates.

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Attica Veterinary Associates

Attica Veterinary Associates

Attica Veterinary Associates provide veterinary services and products, independent consultation in dairy management, nutrition and performance, and trainings.

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