The association between Mycobacterium avium subsp. paratuberculosis fecal shedding or clinical Johne's disease and lactation performance on two Minnesota, USA dairy farms

Raizman, Eran A.; Fetrow, John; Wells, Scott J.; Godden, Sandra; Oakes, Michael J.; Vazquez, Gabriela Andujar

doi:10.1016/j.prevetmed.2006.10.006

Cited by 65 publications

(74 citation statements)

References 15 publications

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“…Previous culturebased studies characterizing milk yield reduction in Holstein herds have been conducted in one to four American herds with far less numbers (n ⩽ 97) of FC+ cases (Johnson et al, 2001;Raizman et al, 2007a;Smith et al, 2009;Pillars et al, 2011). In the study by Raizman et al (2007a), the use of bovine somatotrophin (bST) from 60 to 90 day postpartum to 200 days post-conception definitely influenced the milk production. In contrast, our investigation included a total of 26 German Holstein herds without any application of bST.…”

Section: Discussionmentioning

confidence: 99%

“…Decreased milk yields have been well documented in cows with clinical paratuberculosis (Beaudeau et al, 2007;Raizman et al, 2007a). The decrease in milk production in subclinically infected cows depends on the stage of subclinical infection, characterized by the level of shedding (Raizman et al, 2007a;Smith et al, 2009) or the magnitude of the serological response (Sorge et al, 2011;Villarino et al, 2011) and parity (Wilson et al, 1993;Kudahl et al, 2004;Beaudeau et al, 2007;Aly et al, 2010;Sorge et al, 2011). Furthermore, the choice of the diagnostic test used influences the estimation of the milk yield deviations because of the MAP infection (Beaudeau et al, 2007;Gonda et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…At present, in FC-based studies on milk yield reduction because of paratuberculosis (Wilson et al, 1993;Raizman et al, 2007a;Smith et al, 2009;Pillars et al, 2011), the number of FC+ cases ranges from 25 to 97, coming from 1 to 4 herds, or was not documented (Beaudeau et al, 2007). Some of these studies were able to demonstrate individual influences such as stage of disease or parity on the magnitude of the milk yield depression in subclinically infected cows, but further studies are needed to identify effects at the herd level, such as farm management, or at regional level.…”

Section: Introductionmentioning

confidence: 99%

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Paratuberculosis: decrease in milk production of German Holstein dairy cows shedding Mycobacterium avium ssp. paratuberculosis depends on within-herd prevalence

Donat¹,

Soschinka²,

Erhardt

et al. 2014

Animal

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Paratuberculosis impairs productivity of infected dairy cows because of reduced milk production and fertility and enhanced risk of culling. The magnitude of the milk yield depression in individual cows is influenced by factors such as parity, the stage of the disease and the choice of test used. The objectives of this case-control study were to substantiate the influence of the different levels of the within-herd prevalence (WHP) on individual milk yield of fecal culture (FC)-positive cows (FC+) compared with FC-negative herd-mates (FC−), and to estimate the magnitude of the deviation of the milk yield, milk components and somatic cell count (SCC) in an FC-based study. Of a total of 31 420 cows from 26 Thuringian dairy herds tested for paratuberculosis by FC, a subset of 1382 FC+ and 3245 FC− with milk recording data were selected as cases and controls, respectively. The FC− cows were matched for the same number and stage of lactation (±10 days in milk) as one FC+ from the same herd. Within a mixed model analysis using the fixed effects of Mycobacterium avium ssp. paratuberculosis (MAP) status, lactation number, days in milk, prevalence class of farm and the random effect of farm on milk yield per day (kg), the amount of fat and protein (mg/dl) and lactose (mg/dl) as well as the SCC (1000/ml) were measured. On the basis of least square means, FC+ cows had a lower test-day milk yield (27.7 ± 0.6 kg) compared with FC− (29.0 ± 0.6 kg), as well as a lower milk protein content and a slightly diminished lactose concentration. FC status was not associated with milk fat percentage or milk SCC. In FC+ cows, reduction in milk yield increased with increasing WHP. An interaction of FC status and farm was found for the test-day milk yield, and milk protein percentage, respectively. We conclude that the reduction in milk yield of FC+ cows compared with FC− herd-mates is significantly influenced by farm effects and depends on WHP class. Owners of MAP-positive dairy herds may benefit from the reduction in WHP not only by reducing number of infected individuals but also by diminishing the individual losses in milk production per infected cow, and therefore should establish control measures.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Paratuberculosis: decrease in milk production of German Holstein dairy cows shedding Mycobacterium avium ssp. paratuberculosis depends on within-herd prevalence

Donat¹,

Soschinka²,

Erhardt

et al. 2014

Animal

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“…Lameness, pneumonia and mastitis have been reported the most common clinical diseases among fecal culture positive dairy cows in specific herds (Raizman et al, 2007). This contributes to the perception that there is additional veterinary expense per infected cow.…”

Section: Discussionmentioning

confidence: 99%

Perceptions of veterinarians in bovine practice and producers with beef cow-calf operations enrolled in the US Voluntary Bovine Johne's Disease Control Program concerning economic losses associated with Johne's disease

Bhattarai

Fosgate

Osterstock

et al. 2013

Preventive Veterinary Medicine

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This study compares the perceptions of producers and veterinarians on the economic impacts of Mycobacterium avium subspecies paratuberculosis (MAP) infection in cow-calf herds. Questionnaires were mailed to beef producers through the Designated Johne's Coordinators and to veterinarians belonging to a nationwide professional organization. Important components of losses associated with MAP infected cows were used to estimate total loss per infected cow-year using an iterative approach based on collected survey data. Veterinarians were more likely to perceive a lower calving percentage in MAP infected cows compared to producers (P=0.02). Income lost due to the presence of Johne's disease (JD) in an infected cattle herd was perceived to be higher by veterinarians (P<0.01). Compared to veterinarians without JD certification, seedstock producers were more likely to perceive genetic losses due to culling cows positive for MAP (P<0.01). There were mixed opinions regarding the magnitude of lowered weaning weight in calves from infected cows and perceived differences in risk of other diseases

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“…70% of the infected herds could be identified using environmental samples compared with individual milk or serum ELISA or pooled fecal samples (Lombard et al 2006). Advantages of environmental sampling are the lower costs due to the requirement of fewer samples, as well as the avoidance of additional animal handling (Berghaus et al 2006;Lombard et al 2006;Raizman et al 2007). The number of MAP positive environmental samples detected on a farm was found to be positively correlated with the prevalence of MAP positive animals (Raizman et al 2004;Berghaus et al 2006).…”

Section: Environment and Map Infectionmentioning

confidence: 99%

Within-farm transmission of bovine paratuberculosis: recent developments

Eisenberg

Nielen

Koets

2012

Veterinary Quarterly

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Mycobacterium avium subspecies paratuberculosis is the causative agent of paratuberculosis in cattle which causes a chronic infection of the small intestine. Since the transmission is only partly understood current control programs have been able to only decrease prevalence but not to eradicate disease from a herd. Unknown and therefore uncontrolled routes of transmission were suggested and infective bioaerosols were hypothesized as a potential candidate. This review gives an overview concerning disease transmission and focuses on consequences of bioaerosols on the within-herd transmission of paratuberculosis.

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The association between Mycobacterium avium subsp. paratuberculosis fecal shedding or clinical Johne's disease and lactation performance on two Minnesota, USA dairy farms

Cited by 65 publications

References 15 publications

Paratuberculosis: decrease in milk production of German Holstein dairy cows shedding Mycobacterium avium ssp. paratuberculosis depends on within-herd prevalence

Paratuberculosis: decrease in milk production of German Holstein dairy cows shedding Mycobacterium avium ssp. paratuberculosis depends on within-herd prevalence

Perceptions of veterinarians in bovine practice and producers with beef cow-calf operations enrolled in the US Voluntary Bovine Johne's Disease Control Program concerning economic losses associated with Johne's disease

Within-farm transmission of bovine paratuberculosis: recent developments

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