| Influence of pulsation rate on udder health and teat thickness changes in dairy ewes. | |
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MedLine Citation:
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PMID: 12647959 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In this work on machine milking of ewes, pulsation rates of 120 and 180 cycles per min were compared, both with a pulsation ratio of 50:50 and a vacuum level of 36 kPa, comparing intramammary infection (IMI), somatic cell count (SCC) and teat end thickness changes. To this end, two groups of 20 Manchega ewes were used in a crossover experimental design with two experimental periods of 24 d for each. Bacterial exposure of all teats was increased by dipping them in a suspension of Staphylococcus simulans at four consecutive milkings of each period. Pulsation rate of 180 cycles per min, compared with 120 cycles per min, had no negative effect upon new IMI (11 and 16% of ewes infected, respectively) and SCC. No teat end lesions were observed in those animals milked with the two pulsations assayed. Also, teat thickness changes (-0.38 and -0.36 mm at 120 and 180 cycles per min, respectively) were not affected significantly. Finally, in absence of IMI, the two pulsation rates assayed did not affect the SCC. |
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Authors:
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C Peris; J R Díaz; C Segura; A Martí; N Fernández |
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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: 86 ISSN: 0022-0302 ISO Abbreviation: J. Dairy Sci. Publication Date: 2003 Feb |
Date Detail:
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Created Date: 2003-03-21 Completed Date: 2003-05-02 Revised Date: 2006-11-15 |
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: 530-7 Citation Subset: IM |
Affiliation:
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Department of Animal Science, Universitat Politècnica de València, Camí de Vera, 14 46071 València, Spain. cperis@dca.upv.es |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cell Count Dairying / instrumentation, methods* Female Gram-Positive Bacterial Infections Iodine / administration & dosage Lactation* Mammary Glands, Animal / anatomy & histology*, physiology* Mastitis / epidemiology, microbiology, veterinary Micrococcus Milk / cytology Sheep / physiology* Sheep Diseases / epidemiology Staphylococcal Infections |
| Chemical | |
Reg. No./Substance:
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7553-56-2/Iodine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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