Lysolecithin, but not lecithin, improves nutrient digestibility and growth rates in young broilers

Wealleans, A., Buyse, J., Scholey, D. ORCID: 0000-0003-2450-5989, Van Campenhout, L., Burton, E. ORCID: 0000-0003-2784-6922, Di Benedetto, M., Pritchard, S., Nuyens, F. and Jansen, M., 2020. Lysolecithin, but not lecithin, improves nutrient digestibility and growth rates in young broilers. British Poultry Science. ISSN 0007-1668 (Forthcoming)

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Abstract

Young broilers have an underdeveloped ability for lipid digestion. The potential of lecithin and lysolecithin to improve lipid digestion and growth performance was investigated in 3 experiments: an in vitro model that mimics the intestinal conditions of the chick, a digestibility trial with chicks (5 to 7 days of age), and a performance trial until 21 days of age. In Experiment 1, palm oil (PO), palm oil with lecithin (PO+L), and palm oil with lysolecithin (PO+LY) were subjected to in vitro hydrolysis and applied to Caco-2 monolayers to assess lipid absorption. The in vitro hydrolysis rate of triglycerides was higher in PO+LY (k= 11.76 × 10-3 min-1) than in either PO (k= 9.73 × 10 3 min 1) or PO+L (k= 8.41 × 10 3 min 1), and the absorption of monoglycerides and free fatty acids was highest and free fatty acids was highest (P<0.01) for PO+LY. In Experiment 2, 90 broilers were assigned to three dietary treatments: a basal diet with 4% palm oil, and the basal diet supplemented with either 250 ppm lecithin or lysolecithin. ATTD of crude fat was higher in broilers supplemented with lysolecithin, but was lower in broilers supplemented with lecithin. DM digestibility and AMEn in birds supplemented with lysolecithin were significantly higher (3.03% and 0.47 MJ/kg, respectively). In Experiment 3, 480 broilers were randomly allocated to four dietary treatments: basal diet with soybean oil (2%), basal diet with lecithin (2%), soybean oil diet with 250 ppm lysolecithin, or lecithin oil diet with 250 ppm lysolecithin. Lecithin diets significantly reduced weight at day 10 and 21 compared with soybean oil. However, the addition of lysolecithin to lecithin-containing diets significantly improved bird performance. The results of these studies show that, in contrast to lecithin, lysolecithin is able to significantly improve the digestibility and energy values of feed in young broilers.

Item Type: Journal article
Publication Title: British Poultry Science
Creators: Wealleans, A., Buyse, J., Scholey, D., Van Campenhout, L., Burton, E., Di Benedetto, M., Pritchard, S., Nuyens, F. and Jansen, M.
Publisher: Taylor and Francis
Date: 19 January 2020
ISSN: 0007-1668
Identifiers:
NumberType
10.1080/00071668.2020.1736514DOI
1299378Other
Divisions: Schools > School of Animal, Rural and Environmental Sciences
Depositing User: Linda Sullivan
Date Added: 20 Mar 2020 14:32
Last Modified: 20 Mar 2020 14:32
URI: http://irep.ntu.ac.uk/id/eprint/39424

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