Risk factors for intramammary infections and subclinical mastitis in post-partum dairy heifers
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Risk factors for intramammary infections and subclinical mastitis in post-partum dairy heifers. / Krömker, Volker; Pfannenschmidt, Florian; Helmke, Katherina; Andersson, Robby; Grabowski, Nils T.
In: Journal of Dairy Research, Vol. 79, No. 3, 01.08.2012, p. 304-309.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Risk factors for intramammary infections and subclinical mastitis in post-partum dairy heifers
AU - Krömker, Volker
AU - Pfannenschmidt, Florian
AU - Helmke, Katherina
AU - Andersson, Robby
AU - Grabowski, Nils T.
PY - 2012/8/1
Y1 - 2012/8/1
N2 - The prevalence of intramammary infections (IMI) and subclinical mastitis (SCM) in 436 German Holstein heifers was put in relation with clinical findings of the udder and data regarding individual rearing and housing conditions of the animals. The clinical examination took place on the day of the livestock auction (at approximately 41 d in milk, DIM). On that day, 31% of the heifers had IMI in at least one quarter, and 18% of all quarters were infected. Coagulase-negative staphylococci were the most prevalent bacteria isolated, accounting for 68% of the positive samples. Data were analysed by logistic regression. Criteria such as 'juvenile intersucking', 'teats shorter than 35 mm', 'teats with a diameter <18 mm' and 'udder oedema at the day of the auction' were associated with IMI in heifers during the first 41 DIM. Loose-housing systems during pregnancy (as opposed to tie-stalls), juvenile intersucking, clinical mastitis during the first week after calving, teat diameters <18 mm, and employing organic bedding material in the stables before calving were associated with subclinical mastitis.
AB - The prevalence of intramammary infections (IMI) and subclinical mastitis (SCM) in 436 German Holstein heifers was put in relation with clinical findings of the udder and data regarding individual rearing and housing conditions of the animals. The clinical examination took place on the day of the livestock auction (at approximately 41 d in milk, DIM). On that day, 31% of the heifers had IMI in at least one quarter, and 18% of all quarters were infected. Coagulase-negative staphylococci were the most prevalent bacteria isolated, accounting for 68% of the positive samples. Data were analysed by logistic regression. Criteria such as 'juvenile intersucking', 'teats shorter than 35 mm', 'teats with a diameter <18 mm' and 'udder oedema at the day of the auction' were associated with IMI in heifers during the first 41 DIM. Loose-housing systems during pregnancy (as opposed to tie-stalls), juvenile intersucking, clinical mastitis during the first week after calving, teat diameters <18 mm, and employing organic bedding material in the stables before calving were associated with subclinical mastitis.
KW - auction
KW - Heifer
KW - mastitis
KW - risk factor
UR - http://www.scopus.com/inward/record.url?scp=84864544834&partnerID=8YFLogxK
U2 - 10.1017/S0022029912000222
DO - 10.1017/S0022029912000222
M3 - Journal article
C2 - 22677177
AN - SCOPUS:84864544834
VL - 79
SP - 304
EP - 309
JO - Journal of Dairy Research
JF - Journal of Dairy Research
SN - 0022-0299
IS - 3
ER -
ID: 237097424