Is ability to hepatic steatosis influenced by age at the beginning of the overfeeding period in Muscovy and Pekin ducks?

• Published in: Animal (Cambridge, England) Vol. 7; no. 4; pp. 682 - 687
• Main Authors: Chartrin, P., Bernadet, M. D., Sannier, M., Baéza, E.
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 01.04.2013; Elsevier Limited; Published by Elsevier (since 2021) / Cambridge University Press (until 2020); Elsevier
• Subjects: Adipose Tissue - growth & development; Adipose Tissue - physiology; Aging; Animal Husbandry; Animals; Computer Science; Diet; duck; Ducks - growth & development; Ducks - physiology; fatty liver; Life Sciences; lipids; Liver - growth & development; Liver - physiology; meat; overfeeding; Pectoralis Muscles - growth & development; Pectoralis Muscles - physiology; Product quality, human health and well-being; Species Specificity; meat; lipids; fatty liver; overfeeding; duck
• ISSN: 1751-7311; 1751-732X
• DOI: 10.1017/S1751731112002121

The aim of this study was to analyse the effects of species (Muscovy and Pekin ducks) and age at the beginning of the overfeeding period on fatty liver production, carcass composition and lipid and moisture content of the liver and breast muscle. We reared four groups of 40 ducks per species for the study, starting at 2-week intervals in order to have four different ages together at the beginning of the overfeeding period (10, 12, 14 and 16 weeks). At the end of the overfeeding period, all ducks were slaughtered. Our results confirmed the high levels of difference in carcass composition and lipid content in the plasma, liver and breast muscle between Muscovy and Pekin ducks at all ages. Pekin ducks were not able to develop a high degree of hepatic steatosis, but had increased lipid storage in peripheral adipose and muscle tissues than Muscovy ducks. However, the fatty liver weight of Pekin ducks increased with age, with lipid deposition in the liver and peripheral tissues. The ability of Muscovy ducks to produce fatty livers remained unchanged with age in line, with lipid deposition in the liver and peripheral tissues. The sites of lipid deposition thus depend on species and not on the physiological maturity of ducks.