Leone Vanessa A, Worzalla Sharon P, Cook Mark E
Department of Animal Sciences, University of Wisconsin-Madison, 1675 Observatory Drive, Madison, WI 53706, USA.
Lipids. 2009 May;44(5):437-47. doi: 10.1007/s11745-009-3287-5. Epub 2009 Feb 18.
Effects of feeding conjugated linoleic acid (CLA) to hens on progeny chick development and composition at hatch (NHC) and three weeks of age (TWC) were assessed. CLA (0 or 0.5%, composed of mixed isomers of cis-9,trans-11 or trans-10,cis-12-CLA) was fed to hens with either safflower (SO) or olive oil (OO) (3 or 3.5%) to assure successful hatch for 2 weeks prior to collection for incubation. Maternal CLA feeding had no effect on hatchability, but improved egg fertility (p < 0.05). Maternal feeding of CLA with SO increased 21 day-old progeny growth, while CLA with OO decreased growth (oil*CLA, p < 0.05). In 25 day-old chicks (TWC), but not NHC, maternal CLA decreased the proportion of total body water (p < 0.05) and increased body ash (p < 0.05). While monounsaturated fatty acids were decreased and saturated fatty acids increased in eggs and NHC from hens fed CLA, no differences in fatty acid composition were observed in chicks at 25 days of age from hens fed CLA. Maternal CLA feeding resulted in the presence of c9,t11 and t10,c12-CLA in NHC, but only c9,t11 in the TWC. In conclusion, hens fed CLA led to improved fertility and altered body composition at 3 weeks of age.
评估了给母鸡饲喂共轭亚油酸（CLA）对后代雏鸡孵化时（NHC）和三周龄时（TWC）发育及组成的影响。将CLA（0%或0.5%，由顺-9，反-11或反-10，顺-12 - CLA的混合异构体组成）与红花油（SO）或橄榄油（OO）（3%或3.5%）一起喂给母鸡，以便在收集用于孵化前2周确保成功孵化。母体CLA喂养对孵化率没有影响，但提高了蛋的受精率（p < 0.05）。母体用SO喂养CLA可提高21日龄后代的生长，而用OO喂养CLA则降低生长（油*CLA，p < 0.05）。在25日龄雏鸡（TWC）中，而非NHC中，母体CLA降低了全身水分比例（p < 0.05）并增加了体灰分（p < 0.05）。虽然在饲喂CLA的母鸡所产鸡蛋和NHC中，单不饱和脂肪酸减少而饱和脂肪酸增加，但在饲喂CLA的母鸡所产25日龄雏鸡中未观察到脂肪酸组成的差异。母体CLA喂养导致NHC中存在c9，t11和t10，c12 - CLA，但在TWC中仅存在c9，t11。总之，饲喂CLA的母鸡提高了受精率并在三周龄时改变了身体组成。
