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. 2012 Apr;25(4):559–568. doi: 10.5713/ajas.2011.11382

Table 4.

Effects of rearing systems on body weight of two layer strains

Age (wk) Organic Conventional SEM p value



White Brown White Brown Rearing Genotype R×G
23 1,306c 1,619a 1,284d 1,548b 7.30 0.0001 0.0001 0.0007
28 1,624c 1,964a 1,404d 1,759b 10.12 0.0001 0.0001 0.4600
36 1,756c 2,200a 1,690d 2,023b 12.99 0.0001 0.0001 0.0001
70 1,702d 2,150b 1,820c 2,242a 16.36 0.0001 0.0001 0.4357
a,b,c,d

Values with the different superscript are significantly different.