Method for injecting leptin in egg white
A technology for egg whites and breeding eggs, applied in the application, poultry industry, animal husbandry and other directions, can solve problems such as the influence of the liver fat metabolism pattern, and achieve the effect of a simple method
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[0047] Example 1
[0048] Three yellow broiler breeding eggs were selected and randomly divided into two groups. The control group was injected with 100μL solvent (PBS) into the egg white, and the test group was injected with 100μL containing 0.5μg mouse recombinant leptin (498-OB-01M, R&D, USA) (Physiol Res 2003) ; 52(2):201-9) PBS. The blood samples and liver tissue samples were taken at 12 and 17 embryonic age and the day of hatching (0 day old) respectively. Radioimmunoassay was used to determine serum and liver leptin concentrations, real-time fluorescent RT-PCR was used to quantify liver LEPR and fat metabolism-related genes, and Western blot was used to determine liver LEPR protein content. The results showed that the chick weight in the leptin treatment group was significantly reduced (P=0.000), while the liver body index was significantly increased (P=0.018), especially the difference between females was extremely significant (both chick weight and liver body index were P...
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[0065] Example 2
[0066] Three-yellow broiler breeding eggs with similar egg weights were selected in this experiment and randomly divided into three groups: the control group (control, Con) was injected with 100μL solvent (PBS) into the egg white, and the leptin treatment group was injected with 0.5μg / 100μL PBS (low dose group) , LL) and 5.0μg / 100μL PBS (high-dose group, HL) mouse recombinant leptin, and liver and serum samples were taken when the chicks were raised to 21 days of age. Radioimmunoassay was used to determine the concentration of leptin and thyroid hormones in the liver and serum, Westernblot was used to determine the content of LEPR protein in the liver of chickens, and real-time fluorescent RT-PCR was used to quantify the expression of genes related to liver LEPR and fat metabolism. The results showed that intra-egg injection of leptin affected the early growth of broilers after hatching, and showed sex-specific and dose-dependent (see Table 2-1, 2-2, 2-3). Regar...
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