Secretion Effect of Estrogen of Different Growth Stages of Silkworm (Bombyx mori L.)
2011
Ryu, K.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Lee, H.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Kim, K.Y., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Kim, M.J., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Oh, H.G., Huvet. Co. Ltd., Iksan, Republic of Korea | Kang, P.D., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea
The average life expectancy has continuously increased with the development of medical industry. As women get older, they experience the deficit of estrogen caused by decreased function of ovarian. Specifically, they suffer from temporary fever because of unstable vasomotion and, in the long term experience, degeneration of urogenital organs, tooth loss, arteriosclerosis, demantia, snores and so on. Because of these symptoms the estrogen medical supply is getting required. Along with this, many studies have conducted to find out substitutional medicals without any side effects. This research was carried out to find out such substitutable materials. For the purpose of study, we examined the change of estrogen using the rats fed with the pupa powder immediately before the eclosion, eclosed adult, the pupa extract immediately before the eclosion, and the silkworm powder prepared at 3∨rd day of 5∨th instar. The result showed no significant chance in weight, feeding and water intake quantity among variables. However, the estrogen hormone secretion effects was very high at 73 pg/ml in the rats fed with the freeze-dried powder of the Yeonnokjam male pupa prepared immediately before the eclosion, compared with the control at 59 pg/ml. The next was Yangwonjam male adult at 71 pg/ml.
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