نتایج جستجو برای: broodiness
تعداد نتایج: 78 فیلتر نتایج به سال:
Avian reproductive system is regulated by the integrated system, the hypothalamo-pituitary-gonadal (HPG) axis. The HPG axis involves two major neuroendocrine systems controlling avian reproduction. These neuroendocrine systems include the chicken gonadotropin releasing hormone/follicle stimulating hormone-luteinizing hormone (GnRH/FSH-LH), and vasoactive intestinal peptide/prolactin (VIP/PRL) n...
BACKGROUND Abundant evidence indicates that chicken reproduction is strictly regulated by the hypothalamic-pituitary-gonad (HPG) axis, and the genes included in the HPG axis have been studied extensively. However, the question remains as to whether any other genes outside of the HPG system are involved in regulating chicken reproduction. The present study was aimed to identify, on a genome-wide...
The induction and regulation of broodiness is of the most important role of prolactin in avian species.The promoter region of the prolactin gene is an appropriate model for studying tissue-specific andhormonally-regulated activation of gene transcription. In this study, the association between prolactinpromoter region alleles and egg production in Fars native chickens was investigated. In total...
Prolactin (PRL) is known as the beginning and maintenance factor of broodiness in avian species. The prolactin receptor (PRLR) gen plays an important role in the process of PRL hormone signal transduction. In the present study, the polymorphism in exon 2 of PRLR gene in Japanese quail and guinea fowl were investigated. Blood samples were randomly obtained from 180 Japanese quail and 157 guinea ...
تغذیه مناسب یکی از مهمترین عواملی است که روی طول عمر زنبوران عسل تاثیر دارد. تا به امروز منابع پروتئینی مختلفی مانند انواع کنجاله دانه های روغنی، مخمرها، شیر خشک و غیره در تغذیه زنبور عسل استفاده شده اند. کنجاله سویا یک از موادی است که به فراوانی مورد استفاده قرار گرفته است. در بسیاری از تحقیقات مشخص شده است که مصرف این کنجاله نسبت به گرده باعث کاهش طول عمر زنبور عسل شده است. در یک آزمایش به ...
Dr. RAYMOND PEARL (1912) was the first worker to suggest that sexlinked factors were involved in the inheritance of fecundity. PEARL used as a measure of fecundity the eggs produced during the winter period. He proposed that two major dominant factors were responsible for high egg production, one of which resided in the sex chromosome. GOODALE (1919) and HURST (1921) each failed to confirm the ...
Talazadeh F and Mayahi M Journal of Herbmed Pharmacology, Volume 6, Number 1, January 2017 http://www.herbmedpharmacol.com 34 (14). This phytosterol complex targets the TH1 and TH2 cells, resulting in improved T-lymphocyte and natural killer cell activities (15). Chinese herbs can also help to develop immune organs, such as the spleen and thymus (16) as well as increase in antibody production. ...
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