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Ovary and Liver IGF-I, IGF-IR and IGFBP-II Gene Expressions and Reproduction Performance of Old Laying Hens Injected with Growth Hormone and Testosterone
J. Agr. Sci. Tech
This study investigated how exogenous hormones change ovary and liver IGF-I, IGF-IR and IGFBP-II gene expression and egg production performance of 160 laying hens (HyLine W-36), at 73 rd week of age when subcutaneously injected with different doses of Growth Hormone (GH) and Testosterone (Ts) as follows: Treatment 1 (Tr 1): 100 µL distilled water (control group); Treatment 2 (Tr 2): Ts 500 µg kg-1 +GH 50 µg kg-1 live weight; Treatment 3 (Tr 3): Ts 500 µg kg-1 +GH 100 µg kg-1 live weight, andfatcat:mt5hfhl4ovd4xhtwrhzsvwz3sq