{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T23:32:36Z","timestamp":1770507156240,"version":"3.49.0"},"reference-count":31,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2001,11,1]],"date-time":"2001-11-01T00:00:00Z","timestamp":1004572800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Lipids"],"published-print":{"date-parts":[[2001,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In the present study, laying hens received 29 g per kg diet of a preparation containing either 70% linoleic acid (LA) or approximately the same amount of conjugated linoleic acid (CLA) in the control and experimental treatments, respectively. The CLA preparation consisted predominantly of <jats:italic>cis<\/jats:italic>\u20109,<jats:italic>trans<\/jats:italic>\u201011 and <jats:italic>trans<\/jats:italic>\u201010,<jats:italic>cis<\/jats:italic>\u201012 fatty acid isomers as free fatty acids in a ratio of 1\u22361. The diets were fed for 8 wk to determine the effect of dietary CLA on quality characteristics of eggs. In addition, the fatty acid composition of liver and heart was analyzed. Performance parameters (egg weight, feed efficiency) were not significantly affected by feeding the diets supplemented with CLA. The overall amount of CLA that was incorporated into yolk was 7.95 g CLA\/100 g total fatty acids, or approximately 400 mg CLA\/egg. The transfer efficiency of the <jats:italic>cis<\/jats:italic>\u20109,<jats:italic>trans<\/jats:italic>\u201011 isomer was higher than that of the <jats:italic>trans<\/jats:italic>\u201010,<jats:italic>cis<\/jats:italic>\u201012 isomer; however, the transfer rate of CLA isomers into yolk and tissues was significantly lower than that of linoleic acid. Dietary CLA increased the concentration of saturated fatty acids in yolk and tissues at the expense of monounsaturated fatty acids. The proportions of myristic, palmitic, and stearic acids in yolk lipids were also changed by dietary CLA. Additionally, long\u2010chain polyunsaturated fatty acids (arachidonic acid and docosahexaenoic acid) were decreased without changing the balance of the n\u22126\/n\u22123 ratio in egg yolk. The inclusion of CLA in layer diets altered the shape of the yolk and various egg parameters (albumen height, foam index, and yolk index). The results of this study indicate that CLA induces various changes in lipid and fatty acid metabolism of laying hens and affects quality characteristics of eggs.<\/jats:p>","DOI":"10.1007\/s11745-001-0835-0","type":"journal-article","created":{"date-parts":[[2006,11,13]],"date-time":"2006-11-13T12:41:52Z","timestamp":1163421712000},"page":"1217-1222","source":"Crossref","is-referenced-by-count":30,"title":["Incorporation of dietary linoleic and conjugated linoleic acids and related effects on eggs of laying hens"],"prefix":"10.1002","volume":"36","author":[{"given":"Klaus","family":"Sch\u00e4fer","sequence":"first","affiliation":[{"name":"Institut f\u00fcr Tierern\u00e4hrung Freie Universit\u00e4t Berlin Br\u00fcmmerstr. 34 Berlin D\u201014195 Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Klaus","family":"M\u00e4nner","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Tierern\u00e4hrung Freie Universit\u00e4t Berlin Br\u00fcmmerstr. 34 Berlin D\u201014195 Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Angelos","family":"Sagredos","sequence":"additional","affiliation":[{"name":"TrocoCell Research and Trade GmbH Hamburg D\u201020249 Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Klaus","family":"Eder","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Ern\u00e4hrungswissenschaften Martin\u2010Luther\u2010Universit\u00e4t Halle Halle (Saale) D\u201006108 Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ortwin","family":"Simon","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Tierern\u00e4hrung Freie Universit\u00e4t Berlin Br\u00fcmmerstr. 34 Berlin D\u201014195 Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2001,11]]},"reference":[{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0889-1575(92)90037-K"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1753-4887.1995.tb01525.x"},{"key":"e_1_2_2_4_1","first-page":"12","volume-title":"Advances in Conjugated Linoleic Acid Research","author":"Pariza M.W.","year":"1999"},{"key":"e_1_2_2_5_1","first-page":"1212","article-title":"Conjugated Linoleic Acid Suppresses Mammary Carcinogenesis and Proliferative Activity of the Mammary Gland in the Rat","volume":"54","author":"Ip C.","year":"1994","journal-title":"Cancer Res."},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s002170050218"},{"key":"e_1_2_2_7_1","first-page":"180","volume-title":"Advances in Conjugated Linoleic Acid Research","author":"Griinari J.M.","year":"1999"},{"key":"e_1_2_2_8_1","doi-asserted-by":"publisher","DOI":"10.1093\/ps\/78.8.1138"},{"key":"e_1_2_2_9_1","volume-title":"Nutrient Requirements of Poultry","author":"National Research Council","year":"1994"},{"key":"e_1_2_2_10_1","volume-title":"Die Chemische Untersuchung von Futtermitteln","author":"Naumann C.","year":"1993"},{"key":"e_1_2_2_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(97)00587-4"},{"key":"e_1_2_2_12_1","first-page":"63","article-title":"The Effect of Zinc Deficiency on Erythrocyte Membrane Lipids of Force\u2010Fed Rats Receiving a Diet Containing Coconut Oil or Fish Oil","volume":"8","author":"Eder K.","year":"1994","journal-title":"J. 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