Choline requirements of male White Pekin ducks from 21 to 42 d of age

1. A dose–response experiment with 6 dietary choline concentrations (0, 342, 779, 1285, 1662 and 1962 mg/kg) was conducted with male White Pekin ducks to estimate the choline requirement from 21 to 42 d of age. 2. Ninety 21-d-old male White Pekin ducks were allotted to 6 dietary treatments, each con...

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Bibliographic Details
Published in:British poultry science 2014-07, Vol.55 (4), p.548-552
Main Authors: Wen, Z. G, Hou, S. S, Tang, J, Feng, Y. L, Huang, W, Guo, Y. M, Xie, M
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animal Nutritional Physiological Phenomena - drug effects
Animals
choline
Choline - administration & dosage
Choline - metabolism
Choline - pharmacology
Diet - veterinary
Dietary Supplements - analysis
dose response
Dose-Response Relationship, Drug
ducks
Ducks - growth & development
Ducks - metabolism
feed intake
liver
Male
males
Pekin
phospholipids
Random Allocation
regression analysis
triacylglycerols
weight gain
Weight Gain - drug effects
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Summary:1. A dose–response experiment with 6 dietary choline concentrations (0, 342, 779, 1285, 1662 and 1962 mg/kg) was conducted with male White Pekin ducks to estimate the choline requirement from 21 to 42 d of age. 2. Ninety 21-d-old male White Pekin ducks were allotted to 6 dietary treatments, each containing 5 replicate pens with three birds per pen. At 42 d of age, final weight, weight gain, feed intake and feed/gain were measured. Liver was collected to determine total liver lipid, triglyceride and phospholipids. 3. Significant positive effects of dietary choline on final weight, weight gain and feed intake were observed. In addition, dietary choline supplementation significantly decreased liver lipid and triglyceride content and increased liver phospholipids of Pekin ducks. 4. According to broken-line regression analysis, the choline requirements of male White Pekin ducks from 21 to 42 d of age for weight gain, feed intake and total liver lipid were 980, 950 and 1130 mg/kg. Pekin ducks needed more choline to prevent excess liver lipid deposition than to maintain growth.
ISSN:1466-1799
0007-1668
1466-1799
DOI:10.1080/00071668.2014.938220