Ruminant Paratuberculosis—a Century of Progress and Frustration

Kreeger, John M.

doi:10.1177/104063879100300425

Cited by 78 publications

(51 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the average dairy herd, the losses induced by the culling of a female calf were estimated by half (50% of the calves being females) of the margin made on an 8-day old veal calf (Dufour et al, 2004). For example, Kreeger (1991) assumed the replacement heifer cost to be about USD 1 100.…”

Section: Losses Resulting From Culling Of Animalsmentioning

confidence: 99%

“…A higher probability of negative energy balance is assumed in PTB-infected cows because of a decreased nutrient absorption in the intestines. In addition to this malabsorption syndrome, protein losing enteropathy occurs during PTB (Kreeger, 1991). The association between the pathological condition and reduction in feed efficiency, milk production, milk fat and protein production, and slaughter weight is clear (Johnson-Ifearulundu and Kaneene, 1997).…”

Section: Negative Energy Balancementioning

confidence: 99%

“…This association reflects deaths directly caused by PTB with deaths attributable to an increased risk of secondary disease. Kreeger (1991) reported that annual death losses may range from 3 to 10% in an infected herd.…”

Section: The Reasons For Culling Of Animals From a Herdmentioning

confidence: 99%

See 2 more Smart Citations

Economic impact of paratuberculosis in dairy cattle herds: a review

Hasoňová¹,

Pavlík²

2006

Vet. Med.

View full text Add to dashboard Cite

Paratuberculosis (PTB) is a disease which causes considerable economic losses to producers of livestock, particularly dairy cows. Nowadays PTB is one of the most prevailing and costly infectious diseases of dairy cattle. The purpose of the present study was to review economic losses, which may be caused by Mycobacterium avium subsp. paratuberculosis (MAP) above all in herds of dairy cattle. The most important losses caused by the presence of clinically ill animals have been thoroughly described: loss of milk production and poor body condition followed by death or culling. In contrast, losses arising from a subclinical disease have not been well documented and contradictory results have been published to date. The calculation of losses caused by PTB depends to a certain degree on the production system in a herd, efficiency level, herd management system and other factors. Direct economic losses are above all caused by decreased milk production concurrent to increased incidence of mastitis, changes in milk parameters and increased somatic cell counts, reproductive dysfunctions, poor feed conversion, shortened production age and increased predisposition to other diseases etc. Indirect economic losses are caused by premature culling of animals and their unrealized future income, expenses for nonactive production, herd replacement, diagnostic testing, "unnecessary" veterinary care and establishing disease control programmes. Genetic value of animals and their progeny is lost. Last but not least, the reputation of the farm where MAP infected animals are kept is lost for a long-time, which is also important.Keywords: Johne's disease; MAP; dairy cattle; economic losses; Crohn's disease; IS900 List of abbreviations: AGIDT = agar gel immunodiffusion test; BVD = bovine viral diarrhoea; CFT = complement fixation test; EBL = enzootic bovine leucosis; ELISA = enzyme-linked immunosorbent assay; GBP = Greit Britain Pound; IBR = infection bovine rhinotracheitis; LA% = lactation percentage; LAM = Lipoarabinomannan; MAP = Mycobacterium avium subsp. paratuberculosis; ME = mature equivalent; NEB = negative energy balance; NOK = Norwegian Crown; PTB = paratuberculosis; SCC = somatic cell count; USD = United States Dollars; USDA = United States

show abstract

Section: Losses Resulting From Culling Of Animalsmentioning

confidence: 99%

Section: Negative Energy Balancementioning

confidence: 99%

See 1 more Smart Citation

Economic impact of paratuberculosis in dairy cattle herds: a review

Hasoňová¹,

Pavlík²

2006

Vet. Med.

View full text Add to dashboard Cite

show abstract

“…Luego de la ingestión, la bacteria se localiza en el intestino delgado (placas de peyer), nódulos linfáticos y tonsilas en donde es fagocitada por los macrófagos pero no es destruida persistiendo dentro del macrófago y evadiendo, de este modo, la respuesta inmune por daño en la función de este importante mecanismo de defensa del animal (Kreeger, 1991).…”

unclassified

SEROPREVALENCIA DEL Mycobacterium paratuberculosis EN BOVINOS LECHEROS DEL VALLE DE LIMA

Benito

Rivera

2014

Rev. investig. vet. Perú

View full text Add to dashboard Cite

This study reports the seroprevalence of Mycobacterium paratuberculosis, the causative agent of Johne's disease, in Peruvian dairy herds. ELISA tests (HerdCheck, IDEXX, USA) were performed on 346 serum samples collected from 18 herds in the Lima valley during 1997. Antibodies against M. paratuberculosis were found in 13 .3% ( 46/346) of the cows and half (9118) of the herds tested. afecta a los rumiantes domésticos y silvestres. La lesión se localiza principalmente en el intestino delgado, en la parte distal del ileon, produciendo una enteritis granulomatosa y como consecuencia los animales afectados presentan diarrea crónica incurable, emaciación, reducción en la producción de leche (Chiodini, 1992;Thoen y Haagsma, 1996).Rev Inv Vet Perú 33

show abstract

“…4 The multibacillary, or lepromatous, form is characterized by a granulomatous enteritis by macrophages filled with abundant acid-fast bacteria 5 ; the paucibacillary, or tuberculoid, form has diffuse lymphocytic infiltrates in the lamina propria, with few or no visible mycobacteria. 5,10,14 The paucibacillary form is seen less often, and may occur more often in sheep than other in animal species. 7 Only 2 other published reports could be found describing paucibacillary paratuberculosis in goats, 2,7 and its prevalence is unknown.…”

mentioning

confidence: 99%

Goat Paratuberculosis in Chile: First Isolation and Confirmation of Mycobacterium Avium Subspecies Paratuberculosis Infection in a Dairy Goat

et al. 2006

View full text Add to dashboard Cite

Abstract. In October 2004, 41 goats .2 years old from a Saanen dairy goat herd located in Purranque County, 10th Region, Chile, were sampled and tested for paratuberculosis. While collecting samples it was observed that several goats were thin and emaciated. One goat was sufficiently debilitated to warrant humane euthanasia. This animal was brought to the Veterinary School at the Universidad Austral de Chile for necropsy. The goat selected for necropsy was a 12-year-old doe. The animal showed classical clinical signs of caprine paratuberculosis: emaciation despite willingness to eat, dry and rough hair coat, and no evidence of diarrhea. Gross pathology and histopathology of the necropsied goat were consistent with paucibacillary paratuberculosis. Bacteriology, serology, and PCR confirmed the diagnosis. This is the first published report of goat paratuberculosis in Chile confirming a case of caprine paucibacillary paratuberculosis.

show abstract

Ruminant Paratuberculosis—a Century of Progress and Frustration

Cited by 78 publications

References 53 publications

Economic impact of paratuberculosis in dairy cattle herds: a review

Economic impact of paratuberculosis in dairy cattle herds: a review

SEROPREVALENCIA DEL Mycobacterium paratuberculosis EN BOVINOS LECHEROS DEL VALLE DE LIMA

Goat Paratuberculosis in Chile: First Isolation and Confirmation of Mycobacterium Avium Subspecies Paratuberculosis Infection in a Dairy Goat

Contact Info

Product

Resources

About