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Zeng, Q.F., Zhang, Q., Chen, X., Doster, A., Murdoch, R., Makagon, M., Gardner, A. and Applegate, T.J. (2015) Effect of Dietary Methionine Content on Growth Performance, Carcass Traits, and Feather Growth of Pekin Duck from 15 to 35 Days of Age. Poultry Science, 94, 1592-1599.
https://doi.org/10.3382/ps/pev117

has been cited by the following article:

• TITLE: Age and Gender Depending Growth of Feathers and Feather-Free Body in Modern Fast Growing Meat-Type Chickens

  AUTHORS: Christian Wecke, Daulat Rehman Khan, Angela Sünder, Frank Liebert

  KEYWORDS: Growing Chickens, Feather Percentage, Feather-Free Body, Age, Gender

  JOURNAL NAME: Open Journal of Animal Sciences, Vol.7 No.4, September 13, 2017

  ABSTRACT: Two growth experiments with fast growing meat type chickens (Ross 308) were conducted to assess the growth of feathers and feather-free body dependent on age and gender (male:female ratio = 1:1). Birds were reared under uniform management and feeding conditions (floor pens; 15 pens per gender; 5 birds per pen) during the starter (day 1 to 22) and grower period (day 22 to 36). Diets were based on corn, wheat, soybean meal, soybean protein concentrate and balanced with feed amino acids to ensure an equal feed protein quality close to the ideal amino acid ratio by a constant mixture of the feed proteins. At start of the experiment and further on weekly up to the end of the 5th week, 15 birds per gender (each 3 pens of 5 birds) were selected and 24 h fasted before quantitative de-feathering. Both feather and feather free body fractions were significantly increased with increasing age of the birds (p p