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Chickens
Sheep
Body Weight
Hybrid Vigor
Time Factors
Erythrocytes
Antibody Formation
Eating
Genotype
Oviposition
Breeding
Organ Size
Drinking
Poultry Diseases
Crosses, Genetic
Diet
Animal Feed
Species Specificity
Major Histocompatibility Complex
Antibodies
Co-Publications
89
27
12
9
8
5
4
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