Poultry Nutrition

A Preliminary Study of Choline Requirement and Deficiency Symptom in Peking Ducks from 1 to 14 Days of Age

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  • 1. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2014-03-17

  Online published: 2014-09-10

Abstract

This experiment was conducted to study the choline requirement and deficiency symptom in Peking ducks from 1 to 14 days of age. A total of 384 healthy male Pekin ducks were randomly allotted to 8 groups with 6 replicates per group and 8 ducks per replicate. Ducks in the 8 groups were fed corn-isolated soybean protein-corn starch diets with the choline level of 302, 496, 778, 990, 1 182, 1 414, 1 625, and 1 832 mg/kg, respectively. The experiment lasted for 14 days. The results showed as follows: 1) dietary choline level had significantly effects on average daily gain (ADG) and average daily feed intake (ADFI) (P<0.05). The ADG and ADFI were improved with the increase of dietary choline level, and reached a highest value when dietary choline was 990 mg/kg. Dietary choline level had no significantly effect on the ratio of feed to gain (P>0.05). 2) Dietary choline deficiency significantly inhibited the growth and development of Peking ducks. Ducks in each group showed various degrees of choline deficiency disease on the leg and the ducks showed the tendency from skelasthenia, hock enlargement, and complete crippling to dead. The ducks were the most serious in 302 mg/kg choline group and the symptom could be prevented completely when dietary choline was 1 182 mg/kg. 3) According to the quadratic model, the choline requirements for ADG and ADFI in Peking ducks from 1 to 14 days of age were 1 289 and 1 291 mg/kg, respectively. In conclusion, choline deficiency can inhibite the growth and development of Peking ducks, and the choline requirement is 1 300 mg/kg from 1 to 14 days of age.

Cite this article

WEN Zhiguo, TANG Jing, XIE Ming, HUANG Wei, HOU Shuisheng . A Preliminary Study of Choline Requirement and Deficiency Symptom in Peking Ducks from 1 to 14 Days of Age[J]. Chinese Journal of Animal Nutrition, 2014 , 26(9) : 2523 -2529 . DOI: 10.3969/j.issn.1006-267x.2014.09.012

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