| Animal performance and milk fatty acid profile of dairy goats fed diets with different unsaturated plant oils. | |
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MedLine Citation:
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PMID: 22032358 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The effect of supplementing a basal diet with 1 of 3 plant oils on productive efficiency and milk fatty acid composition was studied in dairy goats. Sixteen Malagueña goats were used in a 4×4 Latin square experiment with 21-d periods and 4 goats per treatment. The basal diet comprised 30% alfalfa hay and 70% pelleted concentrate. Experimental treatments were control (basal diet without added oil) and the basal diet supplemented with 48g/d of high oleic sunflower oil (HOSFO), regular sunflower oil (RSFO), or linseed oil (LO). Dry matter intake and body weight were not affected by treatments. Milk production was higher in HOSFO treatment and milk fat content was higher in RSFO and LO treatments, although no differences in milk energy production or milk renneting properties were found. The RSFO and LO treatments increased the proportion of vaccenic acid in milk fat more so than the HOSFO diet, and rumenic acid followed the same pattern. The content of trans10-18:1 remained low in all experimental diets (<0.7% of total fatty acid methyl esters) although HOSFO and RSFO diets increased it. The variations in the fatty acid profiles observed with the 4 diets, mainly the unsaturated fatty acid isomer contents, are extensively discussed. Compared with that in the control diet, the n-6:n-3 fatty acid ratio in milk fat substantially decreased with the LO, increased with RSFO, and did not change with HOSFO. The addition of moderate amounts of LO to the diets of dairy goats has favorable effects on milk fatty acid composition from the point of view of the human consumer, without negative effects on animal performance. |
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Authors:
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A L Martínez Marín; P Gómez-Cortés; A G Gómez Castro; M Juárez; L M Pérez Alba; M Pérez Hernández; M A de la Fuente |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of dairy science Volume: 94 ISSN: 1525-3198 ISO Abbreviation: J. Dairy Sci. Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-10-28 Completed Date: - 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: 5359-68 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 American Dairy Science Association. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Departamento de Producción Animal (Universidad de Córdoba), Ctra. Madrid-Cádiz s/n, Campus de Rabanales, 14014 Córdoba, Spain. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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