Iranian Journal of Veterinary Research, ( ISI ), Volume (16), No (1), Year (2015-4) , Pages (75-77)

Title : ( Ultrasonography of the supramammary lymph nodes for diagnosis of bovine chronic subclinical mastitis )

Authors: Babak KHoramian Tousi , A Vajhi , H Ghasemzadeh-Nava , M.S Ahrari-Khafi , A Bahonar ,

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Abstract

Currently, somatic cell count (SCC) and bacterial culture are considered as the gold standard of detecting subclinical Mastitis. Mastitis leads to proliferation of lymphocytes in the supramammary lymph nodes and subsequent enlargement of ipsilateral lymph node. Ultrasonography can be used to survey these changes. A portable ultrasound machine with a 2-5 MHz convex transducer was used to identify the supramammary lymph node size in 35 cows in a herd with chronic Staphylococcus aureus mastitis. After premilking udder preparation, a California mastitis test (CMT) was performed and individual milk samples were taken from each quarter for bacterial culture and somatic cell count (SCC) in accordance with NMC recommendations. The mean length (range 5.77-12.90cm) and width (range 2.07-7.41 cm) of the lymph node were 9.2 and 4.03 cm, respectively. There was a positive correlation between lymph node size (length and depth) and culture of milk samples on ipsilateral quarters. Also, there was a significant difference correlation between CMT or mean log SCC of each side and size of supramammary lymph node in the same side. This study showed significant changes in supramammary lymph node dimensions in mastitis cases, so ultrasonography of this lymph node is probably a useful method for mastitis detection, especially in situations that test on milk is impossible.

Keywords

, Supramammary lymph node, Ultrasonography, Mastitis, Staphylococcus aureus, Dairy cow
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@article{paperid:1048062,
author = {KHoramian Tousi, Babak and A Vajhi and H Ghasemzadeh-Nava and M.S Ahrari-Khafi and A Bahonar},
title = {Ultrasonography of the supramammary lymph nodes for diagnosis of bovine chronic subclinical mastitis},
journal = {Iranian Journal of Veterinary Research},
year = {2015},
volume = {16},
number = {1},
month = {April},
issn = {1728-1997},
pages = {75--77},
numpages = {2},
keywords = {Supramammary lymph node; Ultrasonography; Mastitis; Staphylococcus aureus; Dairy cow},
}

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%0 Journal Article
%T Ultrasonography of the supramammary lymph nodes for diagnosis of bovine chronic subclinical mastitis
%A KHoramian Tousi, Babak
%A A Vajhi
%A H Ghasemzadeh-Nava
%A M.S Ahrari-Khafi
%A A Bahonar
%J Iranian Journal of Veterinary Research
%@ 1728-1997
%D 2015

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