Infection dynamics of digital dermatitis in first-lactation Holstein cows in an infected herd

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Infection dynamics of digital dermatitis in first-lactation Holstein cows in an infected herd. / Capion, N.; Boye, Mette; Ekstrøm, Claus Thorn; Jensen, Tim Kåre.

In: Journal of Dairy Science, Vol. 95, No. 11, 2012, p. 6457-6464.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Capion, N.; Boye, Mette; Ekstrøm, Claus Thorn; Jensen, Tim Kåre / Infection dynamics of digital dermatitis in first-lactation Holstein cows in an infected herd.

In: Journal of Dairy Science, Vol. 95, No. 11, 2012, p. 6457-6464.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{f703a8a779b847878e1da7a452ef65ce,
title = "Infection dynamics of digital dermatitis in first-lactation Holstein cows in an infected herd",
publisher = "American Dairy Science Association",
author = "N. Capion and Mette Boye and Ekstrøm, {Claus Thorn} and Jensen, {Tim Kåre}",
year = "2012",
doi = "10.3168/jds.2012-5335",
volume = "95",
number = "11",
pages = "6457--6464",
journal = "Journal of Dairy Science",
issn = "0022-0302",

}

RIS

TY - JOUR

T1 - Infection dynamics of digital dermatitis in first-lactation Holstein cows in an infected herd

A1 - Capion,N.

A1 - Boye,Mette

A1 - Ekstrøm,Claus Thorn

A1 - Jensen,Tim Kåre

AU - Capion,N.

AU - Boye,Mette

AU - Ekstrøm,Claus Thorn

AU - Jensen,Tim Kåre

PB - American Dairy Science Association

PY - 2012

Y1 - 2012

N2 - Digital dermatitis (DD) refers to painful lesions primarily affecting the skin in the interdigital region of dairy cattle. The purpose of this study was to evaluate the dynamics of DD in 39 cows, observed at approximately 3-d intervals, for the first 6mo of lactation. Specifically, the study aimed at evaluating different levels of DD susceptibility in cows, identifying the bacterial colonization of the interdigital skin, and exploring the relationship between clinical DD diagnosis and laboratory findings. Three different susceptibility categories were identified for DD: 1=consistently healthy cow; 2=intermittently infected cow; and 3=consistently infected cow. Susceptibility categories were associated with age at calving. The average age at calving was 775d (SD ±43.4), with the youngest heifer calving at age 669d and the oldest heifer at 858d. Advancing age at calving was associated with greater odds of being intermittently or consistently infected. This corresponded with an odds ratio of 2.02 over a period of 30d. During the study period, 161 DD lesions were identified in 28 of the 39 cows (72%). Of those 28 cows, 13 cows were consistently infected. The remaining 11 of the 39 cows (28%) showed slight thickening of the skin with no pain (5 cows) and no signs of skin changes (6 cows). Histopathology and fluorescence in situ hybridization were possible to perform on 132 biopsy samples. A clinical diagnosis of DD was confirmed in 70% of the lesions by histopathology, and colonization of Treponema spp. Dichelobacter nodosus was found in 35 samples (29%).

AB - Digital dermatitis (DD) refers to painful lesions primarily affecting the skin in the interdigital region of dairy cattle. The purpose of this study was to evaluate the dynamics of DD in 39 cows, observed at approximately 3-d intervals, for the first 6mo of lactation. Specifically, the study aimed at evaluating different levels of DD susceptibility in cows, identifying the bacterial colonization of the interdigital skin, and exploring the relationship between clinical DD diagnosis and laboratory findings. Three different susceptibility categories were identified for DD: 1=consistently healthy cow; 2=intermittently infected cow; and 3=consistently infected cow. Susceptibility categories were associated with age at calving. The average age at calving was 775d (SD ±43.4), with the youngest heifer calving at age 669d and the oldest heifer at 858d. Advancing age at calving was associated with greater odds of being intermittently or consistently infected. This corresponded with an odds ratio of 2.02 over a period of 30d. During the study period, 161 DD lesions were identified in 28 of the 39 cows (72%). Of those 28 cows, 13 cows were consistently infected. The remaining 11 of the 39 cows (28%) showed slight thickening of the skin with no pain (5 cows) and no signs of skin changes (6 cows). Histopathology and fluorescence in situ hybridization were possible to perform on 132 biopsy samples. A clinical diagnosis of DD was confirmed in 70% of the lesions by histopathology, and colonization of Treponema spp. Dichelobacter nodosus was found in 35 samples (29%).

KW - Digital dermatitis

KW - Infection dynamics

KW - Lameness

U2 - 10.3168/jds.2012-5335

DO - 10.3168/jds.2012-5335

JO - Journal of Dairy Science

JF - Journal of Dairy Science

SN - 0022-0302

IS - 11

VL - 95

SP - 6457

EP - 6464

ER -