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A study of dairy herds with constantly low or constantly high bulk milk somatic cell count, with special emphasis on management

Ekman, Torkel (1998). A study of dairy herds with constantly low or constantly high bulk milk somatic cell count, with special emphasis on management. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae. Veterinaria, 1401-6257
ISBN 91-576-5434-4
[Doctoral thesis]

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Abstract

Swedish dairy fanns with low bulk milk somatic cell counts (LC) for at least seven years and farms with high cell counts (HC) for the same period were studied. Herds had to produce >100 tons ofmilk and be enrolled in the official milk recording scheme to be eligible for inclusion. LC herds had to have an average arithmetic cell count over the observation period of less than 137,000 cells/ml and HC herds had to have an average arithmetic cell count of 325,000-525,000 cells/ml. There was complete separation, as regards BMSCC, between the two types offarms. The sampled farms were studied via 1) data available in Swedish databases on dairy farms (250 LC and 202 HC), and 2) through an in-depth field study (52 LC and 30 HC). Hie farms were located in seven different regions in the southern half ofthe country, Skåne and Halland excluded. Multivariable statistical methods, logistic and linear regression, were used to elucidate differences between farm types.The LC farms were smaller, 29 vs. 37 cows, and generally had higher incidences cf treatments of cattle diseases than the HC farms. The LC farms produced more milk/cow and had better fertility than the HC farms. This indicates better management on the LC farms. The results ofthe m-depth field study point in the same direction. Thus, the cows on LC farms were cleaner, bettersheared, had better trimmed claws and were ofthe SRBbreed. The LC farmers used rubbermats and straw more often. The milklines had greater diameters, the milking technique was much better, and teat dipping was practiced more frequently. The calves on LC farms were more often tended by a female, they were cleaner, received whole-milk for a longer period oftime and were dewormed more often than calves on HC farms. The spouses worked together more often, there were more children in the households and the owners were more patient than the owners on HC farms, where there were more employed personnel and cows of the SLB-breed. The study indicates the need for a new holistic approach for control ofudder health.

Authors/Creators:Ekman, Torkel
Title:A study of dairy herds with constantly low or constantly high bulk milk somatic cell count, with special emphasis on management
Series Name/Journal:Acta Universitatis Agriculturae Sueciae. Veterinaria
Year of publishing :1998
Number:32
Number of Pages:170
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:91-576-5434-4
ISSN:1401-6257
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
Keywords:bulk milk somatic cell count (BMSCC), herd health, management, mastitis, milking machine, milking technique, udder health
URN:NBN:urn:nbn:se:slu:epsilon-p-117437
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-117437
ID Code:28313
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Institutionen för obstetrik och gynekologi
Deposited By: SLUpub Connector
Deposited On:13 Jun 2022 08:43
Metadata Last Modified:13 Jun 2022 08:52

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