During the studied time interval, in the K-22 and R-11 strains, the body weight of roosters showed a decreasing trend (21.0–30.4 g/year), while in the A-33 strain, it showed an increasing trend (8.62 g/year).
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Influence of Genotype on Productivity and Egg Quality of Three Hen Strains Included in a Biodiversity Program.
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The sentences
Regardless of strain and evaluation date, the egg weight showed a positive trend.