Dynamics of Follicular Fluid in One‐humped Camel (Camelus dromedarius)

In the present study, ovarian follicular fluid and serum biochemical, hormonal, electrolytes and amino acids profiles in female dromedary camel (Camelus dromedarius), were investigated. Fluid from small (2–6 mm) and large follicles (7–20 mm) and blood samples were collected from 25 clinically healthy adult female camels. The concentrations of glucose, cholesterol, triglycerides, high‐density lipoproteins, urea, total proteins, albumin, globulin, fibrinogen, alanine aminotransferase, aspartate aminotransferase and tri‐iodothyronine were lower (p ≤ 0.05) in large follicles when compared with the small follicles. However, the concentrations of low‐density lipoproteins, uric acid, creatinine, alkaline phosphatase and acid phosphatase in small and large follicles did not differ. The concentrations of oestradiol 17‐β and progesterone were higher (p ≤ 0.05) in large follicles. The serum concentrations of these hormones were many folds lower (p ≤ 0.05) than those of follicular fluid. Among electrolytes, the concentration of phosphorus was higher (p ≤ 0.05) in the large follicles, while that of potassium and chloride were lower (p ≤ 0.05) in the small follicles. Serum concentrations of sodium, chloride, calcium and phosphorous were higher (p ≤ 0.05), while that of potassium lower (p ≤ 0.05) than corresponding concentrations in the follicular fluid. The concentrations of leucine and arginine were higher (p ≤ 0.05) in follicular fluid when compared with serum concentrations, while the reverse was true for other amino acids. In conclusion, this study is indicative of either low or high concentrations of certain biochemical metabolites, hormones, electrolytes and amino acids in small and large follicles for the individual roles that they play in the growth and development of follicles in the one‐humped she‐camel.     

遥控自动立木整枝机电源控制系统

便携式遥控自动立木整枝机控制系统电源的使用效率是整个系统的一个重要指标及可靠工作的前提.该文在分析控制逻辑的基础上,从节能的观点出发,合理地研制了自动立木整枝机发射与接收系统电源控制电路.电源供电能力测试的结果证明:该电源控制电路可以有效地提高整个系统电源的效率,能够很好地满足自动立木整枝机的工作需要.      

长江流域棉区棉花早衰的成因分析及防控措施

结合长江流域的气候环境,从不同角度总结了导致棉花(Gossypium hirsutum L.)早衰的影响因素,并提出了长江流域棉区棉花早衰的有效防控措施。