Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion ability
Individual milk samples were weekly collected from 48 ewes during eight weeks. Ewes were at the second month of lactation and they were fed the same dietary regimen. The animals were grouped according to the amount of daily milk fat yield: A) 38-57g/d, B) 58-63g/d, C) 64-73g/d, D) 75-110g/d. Milk fr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2010-01-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/467 |
| _version_ | 1818293928330264576 |
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| author | Pierlorenzo Secchiari Giorgio Formisano Alice Pollicardo Giuseppe Conte Andrea Serra Marcello Mele |
| author_facet | Pierlorenzo Secchiari Giorgio Formisano Alice Pollicardo Giuseppe Conte Andrea Serra Marcello Mele |
| author_sort | Pierlorenzo Secchiari |
| collection | DOAJ |
| description | Individual milk samples were weekly collected from 48 ewes during eight weeks. Ewes were at the second month of lactation and they were fed the same dietary regimen. The animals were grouped according to the amount of daily milk fat yield: A) 38-57g/d, B) 58-63g/d, C) 64-73g/d, D) 75-110g/d. Milk from group D showed a higher content of FA from C4 to C10 and a lower content of monounsaturated FA (MUFA) and conjugated linoleic acids (CLA) than Group A (+12%, -11%, and -18%, for C4 to C10, MUFA and CLA, respectively), while Group B and C showed intermediate values. CLA content increased with days of lactation in a similar way for all groups. The mean correlation among all records within each individual lactation was 0.45 for CLA content. Six milk FA pair ratios representing a proxy for SCD activity were also evaluated: group A showed higher values of FA ratios than Group D (+26% on average for all FA pairs). In conclusion, increasing ability of daily milk fat yield was associated with lower milk content of MUFA and CLA and higher content of FA from C4 to C10. |
| first_indexed | 2024-12-13T03:23:39Z |
| format | Article |
| id | doaj.art-b5c40c6b8b984178b2585eaa2a3ab738 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-13T03:23:39Z |
| publishDate | 2010-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-b5c40c6b8b984178b2585eaa2a3ab7382022-12-22T00:01:18ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2010-01-0182s41441610.4081/ijas.2009.s2.414Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion abilityPierlorenzo SecchiariGiorgio FormisanoAlice PollicardoGiuseppe ConteAndrea SerraMarcello MeleIndividual milk samples were weekly collected from 48 ewes during eight weeks. Ewes were at the second month of lactation and they were fed the same dietary regimen. The animals were grouped according to the amount of daily milk fat yield: A) 38-57g/d, B) 58-63g/d, C) 64-73g/d, D) 75-110g/d. Milk from group D showed a higher content of FA from C4 to C10 and a lower content of monounsaturated FA (MUFA) and conjugated linoleic acids (CLA) than Group A (+12%, -11%, and -18%, for C4 to C10, MUFA and CLA, respectively), while Group B and C showed intermediate values. CLA content increased with days of lactation in a similar way for all groups. The mean correlation among all records within each individual lactation was 0.45 for CLA content. Six milk FA pair ratios representing a proxy for SCD activity were also evaluated: group A showed higher values of FA ratios than Group D (+26% on average for all FA pairs). In conclusion, increasing ability of daily milk fat yield was associated with lower milk content of MUFA and CLA and higher content of FA from C4 to C10.http://www.aspajournal.it/index.php/ijas/article/view/467Dairy sheep, CLA, Milk, Stage of lactation |
| spellingShingle | Pierlorenzo Secchiari Giorgio Formisano Alice Pollicardo Giuseppe Conte Andrea Serra Marcello Mele Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion ability Italian Journal of Animal Science Dairy sheep, CLA, Milk, Stage of lactation |
| title | Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion ability |
| title_full | Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion ability |
| title_fullStr | Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion ability |
| title_full_unstemmed | Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion ability |
| title_short | Temporal changes of conjugated linoleic acid in milk from Sarda ewes with different milk fat secretion ability |
| title_sort | temporal changes of conjugated linoleic acid in milk from sarda ewes with different milk fat secretion ability |
| topic | Dairy sheep, CLA, Milk, Stage of lactation |
| url | http://www.aspajournal.it/index.php/ijas/article/view/467 |
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