Effects of Essential Oil Mixture on Performance, Egg Quality, Follicular Development and Serum Reproductive Hormone Indices of Laying Hens

ZHANG An, WANG Laidi, PENG Yan, SHI Shourong

doi:10.3969/j.issn.1006-267x.2018.04.033

2018 , Vol. 30 >Issue 4: 1489 - 1494

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.04.033

Molecular Nutrition

Effects of Essential Oil Mixture on Performance, Egg Quality, Follicular Development and Serum Reproductive Hormone Indices of Laying Hens

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1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China;
2. Menon Animal Nutrition Technology Co., Ltd., Shanghai 201807, China

Received date: 2017-10-19

Online published: 2018-04-03

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Abstract

This study was conducted to investigate the effects of essential oil mixture (EOM) on performance, egg quality, follicular development and serum reproductive hormone indices of laying hens. A total of 432 twenty-five-week-old healthy Hy-Line Brown laying hens with similar body weight and laying rate were randomly divided to 4 groups with 6 replicates per group and 18 birds per replicate. Hens in the control group were fed a corn-soybean meal basal diet, and the others in the experimental group were fed the basal diets supplemented with 75, 150 and 225 mg/kg EOM, respectively. The adaptation period lasted for 3 weeks and the formal period lasted for 12 weeks. The results showed as follows:1) the egg weight of 150 mg/kg EOM was significantly higher than that of control group (P<0.05). However, there were no significant differences in laying rate, feed intake, egg production and feed to egg ratio among all groups (P>0.05). 2) The Haugh unit of 75 and 150 mg/kg EOM groups was significantly higher than that of 225 mg/kg EOM group (P<0.05), the albumen height of 150 mg/kg EOM group was significantly higher than that of 225 mg/kg EOM group (P<0.05), the eggshell ratio of 225 mg/kg EOM group was significantly higher than that of other groups (P<0.05). However, there were no significant differences in shape index, eggshell color, eggshell thickness, eggshell strength, yolk color, yolk ratio and albumen ratio among all groups (P>0.05). 3) There were no significant differences on follicular development indices among all groups (P>0.05). 4) The serum progesterone content of 225 mg/kg EOM group was significantly higher than that of other groups (P<0.05). However, there were no significant differences on other serum reproductive hormone contents among all groups (P>0.05). In conclusion, dietary EOM can improve egg weight and albumen quality of laying hens, while it has little effect on the follicular development.

Key words： laying hens; essential oil mixture; egg quality; follicular development; reproductive hormone

Cite this article

ZHANG An, WANG Laidi, PENG Yan, SHI Shourong . Effects of Essential Oil Mixture on Performance, Egg Quality, Follicular Development and Serum Reproductive Hormone Indices of Laying Hens[J]. Chinese Journal of Animal Nutrition, 2018 , 30(4) : 1489 -1494 . DOI: 10.3969/j.issn.1006-267x.2018.04.033

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