Effects Of The Iron And Vitamin A Levels On Uterine Protein Secretion And Embryo Survival In Mice

This experiment was conducted to investigate the effects of the iron and vitamin A levels on uterine protein secretion and embryo survival in animal. The Kunming mice, 21 years old , was fed commercial diet in the first 2 weeks and then experimental design diet to the 11th week.They were mated and the 162 mice with vagina plug were divided into nine treatments,each of which had 3 repetitions of 6 mice of per repetition(according to complete random factorial experimental design, the nine treatments diets' iron was accessioned on 3.5,35,175 mg. kg^-1 ;while vitamin Aon 400,4 000 , 20000 IU.kg^-1, respectively).The results were as follows:(1) Compared to3.5 mg.kg^-1 iron levels, the 3,6,18 days' embryo survival rate on 35 mg.kg^-1 iron was significantly increased(1.7%, 0.67%. 12.6%, respectively), but3,6 days' rate on 175 mg.kg^-1 iron was significantly decreased 8.9%, 12.6%, respectively, but increased 0.3% (P>0.05 ) on 18 days. Compared to 400IU.kg^-1VA group, the 3,6,18 days' embryo survival rate on 4 000 IU.kg^-1 was increased 11.5% (P<0.05 ), 2.8%(P>0.05) ,11.4% (P>0.05) .And the 3,18 days'rate on 20 000 IU.kg^-1 was increased 10.0% (P<0.05 ), 18.4% (P>0.05) , respectively, but 6 days' rate was decreased 0.2%(P>0.05 ) . Compared to control group(3.5 mg.kg^-1Fe+400 IU.kg^-1 VA ), the 3,6,18 days' embryo survival rate of 35 mg.kg^-1Fe+ 4000IU.kg^-1VA was increased (24.7%, 9.2%, 47.4%, respectively)and it was significantly affected by iron and vitamin A interactions (P<0.05) . On low,moderate iron and vitamin A levels(Fe₁ -VA₁, Fe₁-VA₂, Fe₂-VA₁, Fe₂-VA₂),the embryo survival rate was increased with the iron and vitamin A levels' increasement.( 2) With the increasement of iron and vitamin A levels in the diet, the serum's iron...