Sudden death of feedlot cattle.

Glock, Robert D.; DeGroot, Brad D.

doi:10.2527/1998.761315x

Cited by 37 publications

(29 citation statements)

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“…Deaths occur suddenly and unexpectedly, i.e. there are no preceding clinical signs (Pierson et al 1976, Glock & DeGroot 1998. Under these circumstances necropsy is the only tool available and the lack of clinical signs and epidemiological data do not allow an accurate diagnosis.…”

Section: Discussionmentioning

confidence: 99%

“…A result of 9.13mmol lactate/L blood found in cattle in the traditional feedlot system was potentially dangerous, being a predisposing factor for systemic metabolic acidosis (Glock & Degroot 1998), and could be the cause of the sudden death cases. During data collection it was observed that several animals were seen separated from the others, but with no changes or signs of any problems and, after a certain time, were found dead by staff members.…”

Section: Discussionmentioning

confidence: 99%

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Major health problems and their economic impact on beef cattle under two different feedlot systems in Brazil

Malafaia

Granato²,

Costa

et al. 2016

Pesq. Vet. Bras.

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ABSTRACT.-Malafaia P., Granato T.A.L., Costa R.M., Souza V.C., Costa D. This study aimed to describe the diagnosis of health problems and to evaluate the cost of their treatment for cattle raised in feedlots to be slaughtered or to be sold as sires for cow--calf systems. Bovine respiratory disease and digestive disorders were the main problems diagnosed in the feedlot for slaughter; the cost for treatment was high, accounting for 9.7 to 20.9 kg of live weight (LW) or the equivalent of 7 to 15% of total LW gained over the days on feed. Due to the high intake of starch-rich concentrate, rumen and fecal pH was lower, whilst rumen osmolarity and blood lactate were higher in cattle fed for slaughter. Cattle affected by digestive disorders spent on average four additional days in the feedlot. Diseases and cost of treatments were associated with lower average daily gain and considerable economic losses. Health problems commonly observed in the feedlots for slaughter were not observed in the feedlots for males to be sold as sires. The most likely reason for this observation was the more careful nutrition and prophylactic health management in sire production systems, which produce animals of much higher selling price. Results from this study suggest that health problems found in feedlots for slaughter may not only reduce animal productivity and profitability, but also the welfare of the animals. The systemic understaffing of livestock cattle workers and veterinarians in large feedlots in Brazil results in under reporting of diseases and lack to understand epidemiological context and disease prevention.INDEX TERMS: Beef cattle, feedlot systems, Brazil, diseases of cattle, sires.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Major health problems and their economic impact on beef cattle under two different feedlot systems in Brazil

Malafaia

Granato²,

Costa

et al. 2016

Pesq. Vet. Bras.

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“…Indeed, there are examples of breakdown in the field when clostridial vaccines are used in cattle (Glock and Degroot 1998). A first difficulty is the absence of an experimental model of the enterotoxaemia syndrome (Manteca and others 2001).…”

Section: Prophylaxismentioning

confidence: 99%

Cattle enterotoxaemia andClostridium perfringens: description, diagnosis and prophylaxis

Lebrun¹,

Mainil

Lindén

2010

Veterinary Record

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“…An over-population of LAB decreases pH, fiber digestion, and VFA production and has the potential to release endotoxins . Ultimately, these changes can cause acidosis, colic, and/or endotoxemia that can lead to laminitis or even instant death (Glock and DeGroot, 1998).…”

Section: The Domino Effectmentioning

confidence: 99%

Effects of direct-fed microbial supplementation on digestibility and fermentation end-products in horses fed low- and high-starch concentrates1

Swyers

Burk

Hartsock

et al. 2008

Journal of Animal Science

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This research evaluated the viability of lactic acid bacteria (LAB) intended for in vivo application as direct-fed microbial (DFM) supplements in two experiments during feed processing (Exp. 1) and storage (Exp. 2) and determined the efficacy of DFM on the digestibility and hindgut fermentation of horses during and after an abrupt increase in starch (Exp. 3). In Exp. 1, lactobacilli survived feed processing and a commercial enumeration method was validated. In Exp. 2, viable colony forming units of LAB were assessed and remained viable during 12 weeks of storage. Controls in both experiments had high levels of naturally-occurring bacteria present. In Exp. 3, a high-starch concentrate caused fecal pH to decrease, and fecal propionate and digestibility of many nutrients to increase. The DFM induced minimal improvements in digestibility or fermentation parameters and data provided no clear evidence to support the use of a multiple versus a single strain DFM preparation.

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Sudden death of feedlot cattle.

Cited by 37 publications

References 0 publications

Major health problems and their economic impact on beef cattle under two different feedlot systems in Brazil

Major health problems and their economic impact on beef cattle under two different feedlot systems in Brazil

Cattle enterotoxaemia andClostridium perfringens: description, diagnosis and prophylaxis

Effects of direct-fed microbial supplementation on digestibility and fermentation end-products in horses fed low- and high-starch concentrates1

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