China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (2): 564-572.doi: 10.16431/j.cnki.1671-7236.2023.02.014

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Biotin on Laying Performance,Egg Quality,Plasma Biochemical Parameters,Ovarian Development and Tibia Characteristics of Laying Ducks in Peak Laying Period

LIANG Mingqi1,2, CHEN Wei2, ZHANG Yanan2, XIA Weiguang2, HUANG Xuebing2, LI Kaichao2, ZHENG Chuntian2, WANG Shuang2   

  1. 1. College of Animal Science and Technology, Zhongkai University of Agriculture and Engineerin, Guangzhou 510225;
    2. Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangdong Public Laboratory of Animal Breeding and Nutrition, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640
  • Received:2022-08-11 Online:2023-02-05 Published:2023-02-06

Abstract: 【Objective】 This study was designed to explore the application effects of biotin in diet of laying ducks and its effects on ovarian development and tibia characteristics.【Method】 A single factor completely randomized experimental design was adopted.A total of 432 healthy Fujian Longyan ducks in peak laying period were randomly divided into 6 groups with 6 replicates in each group and 12 ducks in each replicate.A wheat-soybean meal based diet was adopted,and the dietary biotin supplemental levels were 0,0.05,0.10,0.15,0.20 and 0.25 mg/kg,respectively.The experiment lasted for 12 weeks. At the 12th week, 4 eggs and 2 test ducks were randomly selected from each repetition for blood sampling and slaughter sampling to detect egg quality, blood biochemical indicators, ovarian development and tibia traits.【Result】 ①Dietary biotin supplemental level had no effect on laying performance (P>0.05).②When dietary supplemental biotin level was 0.10 mg/kg,the yolk weight was significantly lower than that of 0.05 and 0.20 mg/kg groups (P<0.05). With the increase of dietary supplemental biotin level, the yolk cholesterol (CHO) content was on the rise (P<0.05).Compared with the control group,the malondialdehyde(MDA) content in yolk was significantly decreased at 0.25 mg/kg biotin supplemental level (P<0.05).③Dietary biotin supplemental level had no significant effects on plasma biochemical indexes,ovarian development and tibia characteristics of laying ducks (P>0.05).【Conclusion】 Dietary biotin supplement had no effect on production performance,ovary development and tibia characteristics of laying ducks in peak period.When biotin supplemental level was 0.25 mg/kg,the degree of lipid oxidation in yolk was reduced,while cholesterol deposition in egg yolk was increased when it was 0.10 to 0.25 mg/kg.

Key words: biotin; laying ducks; laying performance; egg quality

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