Dietary methionine requirement of Jing Brown layer hens from 9 to 17 weeks of age

Summary This study was conducted to evaluate the effect of dietary methionine (Met) supplementation in growth performance and reproductive performance of Jing Brown layer hens. A total of 375 9‐week‐old Jing Brown layer hens were allocated equally to five treatments consisting of 5 replicates with 1...

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Bibliographic Details
Published in:Journal of animal physiology and animal nutrition 2017-10, Vol.101 (5), p.925-935
Main Authors: Meng, G. H., Song, D., Li, L. B., Yang, C. J., Qu, Z. X., Gao, Y. P.
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animal Nutritional Physiological Phenomena
Animals
Chickens - blood
Chickens - genetics
Chickens - physiology
Diet - veterinary
dietary
Female
Follicle Stimulating Hormone - blood
Gastrointestinal Tract
growth performance
Jing Brown layer hens
Luteinizing Hormone - blood
methionine
Methionine - administration & dosage
Nutritional Requirements
organ development
Ovarian Follicle
Ovary - drug effects
Ovary - growth & development
Oviducts - drug effects
Oviducts - growth & development
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Summary:Summary This study was conducted to evaluate the effect of dietary methionine (Met) supplementation in growth performance and reproductive performance of Jing Brown layer hens. A total of 375 9‐week‐old Jing Brown layer hens were allocated equally to five treatments consisting of 5 replicates with 15 hens. Hens were fed with a diet of corn and soya bean meal supplemented with 0.23%, 0.27%, 0.31%, 0.35% and 0.39% Met respectively. Different Met levels did not significantly affect average daily feed intake (ADFI), average daily gain (ADG) and feed/gain ratio (F/G) (p > 0.05), whereas flock uniformity (FU) and jejunum index were significantly different (p 
ISSN:0931-2439
1439-0396
DOI:10.1111/jpn.12525