Body Compositional Changes and Growth Alteration in Chicks from Hens Fed Conjugated Linoleic Acid
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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.
KeywordsConjugated linoleic acid (CLA) Fatty acid modifications Saturated fatty acids Monounsaturated fatty acids Desaturases Dietary fat Lipid absorption
The authors express their gratitude to S&R Farms (Whitewater, WI) for providing laying hens and to the staff at the University of Wisconsin-Madison Poultry Research Lab (Dawn Irish, George Bradley, and Angel Gutierrez) for support of research. The authors would like to thank Shane Huebner for his assistance in fatty acid analysis, Debra Schneider for her assistance in body composition analysis, and David Trott for assistance in certain aspects of this project. Research was supported through royalties received from the Wisconsin Alumni Research Foundation (WARF), as one of the authors (MEC) is an inventor on CLA patents assigned to WARF.
- 7.Ostrawska E, Muralitharan M, Cross RF, Bauman DE, Dunshea FR (1999) Dietary conjugated linoleic acids increase lean tissue and decrease fat deposition in growing pigs. J Nutr 129:2037–2042Google Scholar
- 17.Aydin R (2000) The effects of dietary CLA on avian lipid metabolism. Dissertation, University of Wisconsin-MadisonGoogle Scholar
- 22.Folche J, Lees M, Sloane-Stanley GH (1957) A simple method for the isolation and purification of total lipids from animal tissues. J Biol Chem 226:497–507Google Scholar
- 24.Brotz PG, Schaefer DM (1984) Nitrogen, calcium, and phosphorous determination from a single digestion of feed or feces. J Anim Sci 59:S408Google Scholar
- 26.National Research Council (NRC) (1994) Nutrient requirements of poultry. National Academy Press, Washington, DCGoogle Scholar
- 27.Watkins BA, Seifert MF (2000) Conjugated linoleic acid and bone biology. J Am Coll Nutr 19:S478–S486Google Scholar
- 30.Hopkins DT, Nesheim MC (1967) The linoleic acid requirement of chicks. J Poult Sci 46:872–880Google Scholar
- 36.Bauman DE, Castaneda-Gutierrez E, Butler WR, de Veth M, Pfeiffer A (2007) Method of enhancing reproductive function of mammals by feeding of conjugated linoleic acids. US Patent Application 2007/0191483 A1Google Scholar
- 41.Nobel RC (1987) Lipid metabolism in the chick embryo: some recent ideas. J Exp Zool 1:S65–S73Google Scholar
- 44.Yurawecz MP, Kramer JKG, Ku Y (1999) Methylation procedures for conjugated linoleic acid. In: Yurawecz MP, Mossoba MM, Kramer JKG, Pariza MW, Nelson GJ (eds) Advances in conjugated linoleic acid research, vol 1. AOCS Press, Champaign, pp 64–82Google Scholar