Age-related changes in plasma testosterone concentrations and genital organs content of bulk and trace elements in the male dromedary camel
| Autor: | A.A Al-Qarawi, S. A. El-Mougy, M.S El-Belely, H. A. Abdel-Rahman |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Male
medicine.medical_specialty Camelus Iron Sodium chemistry.chemical_element Genitalia Male Biology Endocrinology Animal science Food Animals Internal medicine Testis Blood plasma medicine Animals Magnesium Testosterone Sex organ Epididymis Spermatozoon Age Factors Prostate Phosphorus General Medicine Trace Elements Zinc medicine.anatomical_structure chemistry Potassium Bulbourethral Glands Calcium Animal Science and Zoology Spermatogenesis Copper Hormone |
| Zdroj: | Animal Reproduction Science. 62:297-307 |
| ISSN: | 0378-4320 |
| DOI: | 10.1016/s0378-4320(00)00146-9 |
| Popis: | There is a paucity of information regarding the influence of plasma testosterone concentrations and inorganic cations secreted in the different seminal fractions on the spermatozoon activity throughout the reproductive life of the one-humped camels. To demonstrate these relationships, the genital organs of 12 prepubertal (3 years), 9 peripubertal (3-5 years), 16 mature (5-15 years) and 15 aged (/=15 years) camels were collected from the Buraidah slaughter house (Al-Qassim Province, Saudi Arabia) during two consecutive breeding seasons (November-April) over 2 years. Plasma testosterone concentrations (mean+/-S.E.) did not exceed 1.4 ng/ml in prepubertal animals with a 3-4 fold increase in peripubertal (3.2+/-0.4 ng/ml) and mature (4.8+/-0.6 ng/ml) camels followed by about 50% decrease (2.6+/-0.3 ng/ml) in aged ones. These hormonal changes were correlated significantly with concentrations of certain elements in the testes (highest Na, Ca and Cu contents), epididymides (highest P and Fe contents), prostate (highest Zn content), and bulbo-urethral glands (highest K and Mg contents). The significance of some interrelationships among the different cations and their biological effects on sperm production and metabolic activity were discussed. |
| Databáze: | OpenAIRE |
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