| Effects of dietary supplementation with alpha-linolenic acid on the phospholipid fatty acid composition and quality of spermatozoa in cockerel from 24 to 72 weeks of age. | |
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MedLine Citation:
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PMID: 9227357 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The aim of this study was to investigate the effects of supplementing the diet of the male chicken with alpha-linolenic acid (18:3n-3) on the phospholipid fatty acid composition, motility and fertilizing ability of chicken spermatozoa. The birds in the control group received a diet supplemented with soybean oil rich in linoleic acid (18:2n-6) whereas those in the test group were supplemented with linseed oil rich in alpha-linolenic acid. A number of age-related changes in the lipid parameters of the spermatozoa were observed in control birds. Between 24 and 72 weeks of age the amount of total lipid in the spermatozoa of control birds increased by approximately 2.4 times and the proportions of cholesterol and free fatty acid also increased significantly, whereas the proportions of phospholipid and triacylglycerol decreased. In addition, the proportion of phosphatidylcholine in the total phospholipid increased, whereas the proportion of phosphatidylserine decreased during the same period. The proportion of docosatetraenoic acid (22:4n-6) in the phospholipid decreased significantly between 24 and 72 weeks of age. The concentration of spermatozoa in the semen of control birds increased to a maximum at week 39 and had decreased significantly by week 72. Supplementation with alpha-linolenic acid had little or no effect on the proportion of docosahexaenoic acid (22:6n-3) in the phospholipid profile of the spermatozoa. However, supplementation with alpha-linolenic acid did produce a significant but small increase in the proportion of docosapentaenoic acid (22:5n-3) recorded at 39 and 54 weeks. Thus, this study shows that the fatty acid composition of the sperm phospholipid demonstrates a marked resistance to dietary manipulation. Supplementation with alpha-linolenic acid significantly enhanced semen fertility at week 39. The results suggest that the small increase in the proportion of n-3 fatty acids in the sperm phospholipids induced by enriching the diet with alpha-linolenic acid is associated with a significant improvement in semen quality at 39 weeks of age. |
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Authors:
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K A Kelso; S Cerolini; B K Speake; L G Cavalchini; R C Noble |
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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 reproduction and fertility Volume: 110 ISSN: 0022-4251 ISO Abbreviation: J. Reprod. Fertil. Publication Date: 1997 May |
Date Detail:
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Created Date: 1997-08-01 Completed Date: 1997-08-01 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0376367 Medline TA: J Reprod Fertil Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 53-9 Citation Subset: IM |
Affiliation:
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Department of Biochemical Sciences, Scottish Agricultural College, Auchincruive, Ayr, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Chickens / metabolism* Diet Fatty Acids / analysis* Fatty Acids, Unsaturated / analysis Linseed Oil / administration & dosage* Male Phospholipids / chemistry* Sperm Count Sperm Motility Spermatozoa / chemistry*, cytology alpha-Linolenic Acid / administration & dosage* |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids; 0/Fatty Acids, Unsaturated; 0/Phospholipids; 463-40-1/alpha-Linolenic Acid; 8001-26-1/Linseed Oil |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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