| Barium selenate supplementation and its effect on intramammary infection in pasture-based dairy cows. | |
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MedLine Citation:
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PMID: 20338424 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A significant proportion of cattle receive inadequate dietary Se because of its low content in soils and pastures of various regions of the world. Several economically important diseases in dairy cows, such as mastitis, have been associated with Se deficiency. The objective of this study was to evaluate the effect of a single injection of a long-acting form of Se at drying off on the risk and incidence rate of new intramammary infections and on milk somatic cell count in the subsequent lactation in pasture-based dairy cows. Forty-nine Chilean Holstein-Friesian cows were fed a diet containing <0.05 mg of Se/kg of ration dry matter. During the dry period, cows were allocated to 1 of 2 groups, a supplemented (n=24) group treated with a single subcutaneous injection of barium selenate 2 mo before calving and a control group (n=25) that remained unsupplemented. Duplicate foremilk samples were aseptically collected within 6 d after calving and every 2 wk until drying-off for bacteriological culture. Milk samples were also collected monthly for somatic cell count evaluation. Blood samples were collected before treatment and at 30, 90, 180, and 270 d after treatment for analysis of blood glutathione peroxidase (GPx) activity. The activity of glutathione peroxidase was higher in supplemented cows 30 d after the injection until the end of the study. The risk and incidence rate of new intramammary infections was not affected by supplementation. A progressive increase in somatic cell count was observed throughout lactation, but there was no effect of supplementation. In conclusion, a one-time injection of barium selenate 2 mo before calving in these pasture-based dairy cows did not affect udder health in the subsequent lactation, indicating that Se basal intake was adequate for preventing subclinical mastitis in pasture-based cows in southern Chile. |
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Authors:
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A Ceballos; J Kruze; H W Barkema; I R Dohoo; J Sanchez; D Uribe; J J Wichtel; F Wittwer |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of dairy science Volume: 93 ISSN: 1525-3198 ISO Abbreviation: J. Dairy Sci. Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-03-26 Completed Date: 2010-05-31 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985126R Medline TA: J Dairy Sci Country: United States |
Other Details:
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Languages: eng Pagination: 1468-77 Citation Subset: IM |
Copyright Information:
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Copyright (c) 2010 American Dairy Science Association. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Departamento de Sistemas de Producci?n, Universidad de Caldas, Manizales, Colombia. aceballos@upei.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed Animal Nutritional Physiological Phenomena / physiology* Animals Barium Compounds / administration & dosage*, therapeutic use Cattle Cell Count / veterinary Dairying / methods* Delayed-Action Preparations / administration & dosage, therapeutic use Dietary Supplements Female Glutathione Peroxidase / metabolism Mastitis, Bovine / epidemiology*, prevention & control Milk / cytology Poaceae Random Allocation Selenium / deficiency* Selenium Compounds / administration & dosage*, therapeutic use Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Barium Compounds; 0/Delayed-Action Preparations; 0/Selenium Compounds; 7782-49-2/Selenium; 7787-41-9/barium selenate; EC 1.11.1.9/Glutathione Peroxidase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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