Involvement of microbial respiratory pathogens in acute interstitial pneumonia in feedlot cattle

Loneragan, Guy H.; Gould, Douglas; Mason, Gary L.; Garry, Franklyn B.; Yost, Garold S.; Miles, D. G.; Hoffman, Bruce W.; Mills, Leon J.

doi:10.2460/ajvr.2001.62.1519

Cited by 28 publications

(39 citation statements)

References 14 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2,3,11 Heifers are often disproportionately affected, and in 1 report the odds of an animal with AIP being a heifer were 3.1 times greater than male cattle. 12 In a survey of feedlots to determine risk factors for AIP, however, feedlots where 50% to 75% of placements were heifers did not always report having cases of AIP.…”

Section: Epidemiology and Risk Factorsmentioning

confidence: 98%

“…Compared with fatal shipping fever, cattle die of AIP relatively late in the feeding period 11 ; the average number of days on feed at the time of death for cattle with AIP has been reported to range from 114 to 136 days. 2,3,11 Heifers are often disproportionately affected, and in 1 report the odds of an animal with AIP being a heifer were 3.1 times greater than male cattle.…”

Section: Epidemiology and Risk Factorsmentioning

confidence: 99%

See 1 more Smart Citation

Feedlot Acute Interstitial Pneumonia

Woolums

2015

Veterinary Clinics of North America: Food Animal Practice

View full text Add to dashboard Cite

Section: Epidemiology and Risk Factorsmentioning

confidence: 98%

Section: Epidemiology and Risk Factorsmentioning

confidence: 99%

Feedlot Acute Interstitial Pneumonia

Woolums

2015

Veterinary Clinics of North America: Food Animal Practice

View full text Add to dashboard Cite

“…[1][2][3][4][5][6][7] Affected cattle have an unexpected onset of respiratory distress that is refractory to treatment and usually fatal. Diagnosis is confirmed on postmortem examination; grossly, the lungs are firm, heavy, and expanded, and interstitial edema and emphysema are present.…”

mentioning

confidence: 99%

Microbiologic findings in feedlot cattle with acute interstitial pneumonia

Woolums

Mason²,

Hawkins³

et al. 2004

ajvr

Self Cite

View full text Add to dashboard Cite

show abstract

“…Following Bovine Respiratory Disease (BRD), AIP is one of the most costly diseases confronted by feedlots (Amosson et al, 2006). It tends to affect cattle that are near to their market weight and in addition to the loss of the animal, economic costs include the value of a large amount of feed, yardage, interest and any other investments in the animal (Loneragan et al, 2001b). In 2000, the National Animal Health Monitoring System reported that 78.4% of all feedlots had at least one animal develop AIP (NAHMS, 2000b).…”

Section: Introductionmentioning

confidence: 99%

Pathologies of Acute Interstitial Pneumonia in Feedlot Cattle

Valles¹,

Apley²,

Reinhardt³

et al. 2016

American Journal of Animal and Veterinary Sciences

View full text Add to dashboard Cite

Acute Interstitial Pneumonia (AIP) is a costly issue that affects feedlot cattle. Research has yet to elucidate the etiology of AIP; therefore a case-control study was conducted to evaluate possible management and physiological factors that contribute to AIP in feedlot cattle. The experiment was conducted during the summer of 2011 in a commercial feedyard in Kansas. Animals exhibiting clinical signs of AIP and a control animal from the same pen were selected for ante-mortem examination. Post-mortem AIP cases were also selected for additional examination. Ante-mortem measurements included rumen gas cap hydrogen sulfide and pH, rectal temperature and body weight. Post-mortem examination added histological examination of lung tissue. Rectal temperature was greater in the AIP cattle (40.6±0.16°C) than controls (39.7±0.16°C; p<0.001). Body weight (499±56 Vs. 506±60 kg), hydrogen sulfide (136±133 vs. 269.8±311 ppm) and rumen pH (6.4±0.5 Vs. 6.2±0.6) were similar between AIP and control cattle (p>0.10). Post-mortem rumen pH values were 6.3±0.4 and 5.7±0.6 for AIP and control cattle, respectively. Histological evaluation of lung samples showed that bronchiolitis was present in about 90% of the cattle affected with AIP. About 75% of the cattle with AIP also had bronchopneumonia. No relationships between feed intake patterns, or serum amylase or lipase levels were noted between treatments (p>0.20). This study generally confirms that AIP tends to occur more in heifers relative to steers, occurs in cattle at heavier weights or later in the feeding period and tends to be associated pathologically with bronchio` litis and bronchopneumonia. The lack of differences in rumen measures and the feed intake data between AIP and control cattle suggest that feed intake patterns and rumen fermentation may not impact AIP in feedlot cattle and that it may be more directly related to bronchiolitis/bronchopneumonia due to chronic irritation or infection.

show abstract

Involvement of microbial respiratory pathogens in acute interstitial pneumonia in feedlot cattle

Cited by 28 publications

References 14 publications

Feedlot Acute Interstitial Pneumonia

Feedlot Acute Interstitial Pneumonia

Microbiologic findings in feedlot cattle with acute interstitial pneumonia

Pathologies of Acute Interstitial Pneumonia in Feedlot Cattle

Contact Info

Product

Resources

About