Immunisation of dairy heifers with a Staphylococcus aureus bacterin reduces infection level and somatic cell counts at time of calving

S.C. Nickerson; E.P. Hovingh; P.W. Widel

Immunisation of dairy heifers with a Staphylococcus aureus bacterin reduces infection level and somatic cell counts at time of calving

in Mastitis control

Autor:innen:

S.C. Nickerson

S.C. Nickerson ¹Animal and Dairy Science Dept., University of Georgia, Athens, GA, USA

Search for other papers by S.C. Nickerson in
Current site
Google Scholar
PubMed

E.P. Hovingh

E.P. Hovingh ²Veterinary and Biomedical Science Dept., Pennsylvania State University, University Park, PA, USA

Search for other papers by E.P. Hovingh in
Current site
Google Scholar
PubMed

, und

P.W. Widel

P.W. Widel ³Boehringer Ingelheim Vetmedica, Inc., St. Joseph, MO, USA Corresponding author: scn@uga.edu

Search for other papers by P.W. Widel in
Current site
Google Scholar
PubMed

Art:: Kapitel

Seiten:: 119–123

DOI:: https://doi.org/10.3920/9789086866496_021

Über Institut einloggen

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

42,00 €35,00 € excl. VAT

Add to Cart

Token einlösen

Use of a Staphylococcus aureus bacterin to prevent intramammary infections (IMI) in dairy heifers was evaluated. At 6 to 18 months of age, Holstein heifers were processed for vaccination and collection of mammary secretions. Fifty-three heifers were immunised with a commercial bacterin and 53 heifers served as unimmunised controls. The vaccine was a lysed culture of polyvalent S. aureus somatic antigens of 5 phage types in an aluminum hydroxide base. Two weeks after processing and at 6-month intervals until calving, vaccinates were processed for boosting. At 2-month intervals after trial initiation and through calving, mammary secretion samples were collected for bacteriological culture and somatic cell counts (SCC). Efficacy data showed that the percentage of heifers with S. aureus IMI at calving was lower in vaccinates (13.3%) compared with controls (34.0%); a reduction of 60.9%. The SCC in samples collected at calving from uninfected heifers for vaccinates and controls were 66,095 and 132,754/ml, and for infected heifers, SCC were 441,764 and 892,176/ml; reductions of approximately 50%. Likewise, average first lactation SCC were lower in vaccinates than controls (49,000 vs. 60,000/ml). The 305-day lactation milk yield for the first lactation demonstrated an 8.6% increase in vaccinates vs. controls (11,217 vs. 10,332 kg). In addition, the 305-day lactation kilograms of fat and protein were higher in vaccinates than controls (fat: 408.04 vs. 338.96 kg; protein: 329.77 vs. 315.23 kg). Evaluation of the number of days in milk for the first lactation demonstrated that vaccinates persisted 13 days longer than unvaccinated controls (349 vs. 336 days), and culling was reduced by one-third in vaccinates (16.9%: vaccinates, 24.5%: controls). Results demonstrated that administration of a commercial bacterin to breeding age and pregnant heifers reduced prevalence of S. aureus mastitis and SCC at calving, and increased first lactation performance.

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/9789086866496/BP000021.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 control

From science to practice

ISBN:: 9789086866496

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 30 Oct 2008

Fachgebiete
- Biowissenschaften

Kennzahlen

	Insgesamt	Letzte 365 Tage	In den letzten 30 Tagen
Aufrufe von Kurzbeschreibungen	61	25	10
Gesamttextansichten	7	0	0
PDF-Downloads	5	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

Immunisation of dairy heifers with a Staphylococcus aureus bacterin reduces infection level and somatic cell counts at time of calving

Zitierungsangaben

Link teilen

Mastitis control

From science to practice

Inhaltsverzeichnis

Kennzahlen

Kennzahlen