Cell function in the bovine mammary gland: Interdependence of healthy and infected udder quarters

R. Merle; A. Schröder; J. Hamann

Jump to Content

Cell function in the bovine mammary gland: Interdependence of healthy and infected udder quarters

in Mastitis in dairy production

Autor:innen:

R. Merle

R. Merle

Search for other papers by R. Merle in
Current site
Google Scholar
PubMed

A. Schröder

A. Schröder

Search for other papers by A. Schröder in
Current site
Google Scholar
PubMed

, und

J. Hamann

J. Hamann

Search for other papers by J. Hamann in
Current site
Google Scholar
PubMed

Art:: Kapitel

Seiten:: 202–207

DOI:: https://doi.org/10.3920/9789086865505_027

Über Institut einloggen

Sofortzugang erwerben (PDF-Download und unbegrenzter Online-Zugang):

42,00 €35,00 € excl. VAT

Add to Cart

Token einlösen

Current mastitis research has not completely explained udder defence mechanisms. In consideration of the anatomical construction of the udder, infection of one udder quarter is not considered to influence the immune status of neighbouring quarters.

In order to test this hypothesis, we compared the early immune reactions of individual udder quarters in response to microbiological attacks. Such reactions are characterised by polymorphonuclear leucocytes (PMN) which release oxygen radicals, which can be determined by chemiluminescence (CL). Milk from 140 udder quarters of 36 cows was thus analysed for somatic cell count (SCC), differential cell count, viability and CL activity. Three cow groups were classified cytologically: a healthy reference group A (11 animals, SCC limit <100,000/ml); group B (moderate mastitis, 8 cows, SCC ≥100,000 and <400,000/ml in at least one quarter) and group C (severe mastitis, 17 cows, SCC ≥400,000/ml in at least one quarter).

Infected and not infected quarters in groups B and C were analysed separately. Viability was significantly lower (P <0.0001) in group A (72.6%) than in the healthy quarters of group C (84.0%). Lowering the SCC limit of healthy quarters to <50,000/ml (group A: all quarters within the udder) revealed striking differences between samples of groups B and C: In addition to varying differential cell counts and viabilities, the CL activity of group B_<50 (2,929 CL units/million PMN) was remarkably lower than that of the other groups (5,616 in group A_<50 and 6,445 CL units/million PMN in group C_<50).

These results show that the infection of one udder quarter does influence the cell activity of neighbouring quarters. When the SCC threshold for healthy quarters was reduced to 50,000 cells/ml, much greater differences in cell activities were detected between healthy udders and healthy quarters of infected udders.

Zitierungsangaben

Save
Cite
Inhalt per Mail versenden

Link teilen

Sie können einen Link zu dieser Seite per E-Mail senden:
Inhalt per Mail versenden
oder den Link direkt kopieren:

https://brill.edhh.ma/abstract/book/9789086865505/BP000027.xml
Der Link wurde nicht kopiert. Ihr aktueller Browser unterstützt das Kopieren über diese Schaltfläche möglicherweise nicht.

Link wurde kopiert

Reduzieren
Erweitern
Nach oben

Mastitis in dairy production

Current knowledge and future solutions

ISBN:: 9789086865505

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 24 Oct 2005

Fachgebiete
- Biowissenschaften

Kennzahlen

	Insgesamt	Letzte 365 Tage	In den letzten 30 Tagen
Aufrufe von Kurzbeschreibungen	99	41	3
Gesamttextansichten	0	0	0
PDF-Downloads	1	0	0

Afrikanistik	Internationale Beziehungen	Nahost- und Islamwissenschaften
Altorientalistik und Ägyptologie	Internationales Recht	Pädagogik
Amerikanistik	Judaistik	Philosophie
Asienwissenschaften	Klassische Altertumswissenschaft	Religionswissenschaft
Bibelauslegung	Kunstgeschichte	Slawistik und Eurasienkunde
Biologie	Literatur- und Kulturwissenschaften	Sozialwissenschaften
Biowissenschaften	Medienwissenschaft	Sprachen und Linguistik
Buchgeschichte und Kartographie	Menschenrechte und humanitäres Völkerrecht	Theologie und Christentum
Geschichte	Musikwissenschaft

Fachgebiete

Autor:innen

Open Access

Produkt-Informationen

Über uns

Kontakt

Cell function in the bovine mammary gland: Interdependence of healthy and infected udder quarters

Zitierungsangaben

Link teilen

Mastitis in dairy production

Current knowledge and future solutions

Inhaltsverzeichnis

Kennzahlen

Kennzahlen