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Impact of daylength on the productivity of two commercial broiler strains.
Schwean-Lardner K, Fancher BI, Classen HL. Schwean-Lardner K, et al. Br Poult Sci. 2012;53(1):7-18. doi: 10.1080/00071668.2012.659652. Br Poult Sci. 2012. PMID: 22404800 Clinical Trial.
In each experiment, four lighting programs (14L:10D (14L), 17L:7D (17L), 20L:4D (20L) and 23L:1D (23L)) were used to study the relationships between productivity and daylength in two genotypes and both genders. 2. ...In experiment one, body weights at d 32 (P = 0.00 …
In each experiment, four lighting programs (14L:10D (14L), 17L:7D (17L), 20L:4D (20L) and 23L:1D (23L)) were used to study the …
Effect of day length on cause of mortality, leg health, and ocular health in broilers.
Schwean-Lardner K, Fancher BI, Gomis S, Van Kessel A, Dalal S, Classen HL. Schwean-Lardner K, et al. Poult Sci. 2013 Jan;92(1):1-11. doi: 10.3382/ps.2011-01967. Poult Sci. 2013. PMID: 23243224 Free article. Clinical Trial.
Four graded day lengths were chosen to allow the study of relationship between day length and health parameters, including 14L:10D, 17L:7D, 20L:4D, and 23L:1D. The primary statistical tools used to assess the day length relationships were regression analysis (Proc Reg and …
Four graded day lengths were chosen to allow the study of relationship between day length and health parameters, including 14L:10D, 17L:7D, …