Sex Ratio of Calves from Insemination of Bovine Spermatozoa Separated by Free-Flow Electrophoresis

Control of Sex Ratio in Rabbits by Electrophoresis of Spermatozoa.

Time of insemination affects the sex ratio of Japanese Black cow offspring Page heading Sex ratio of calves rates after artificial insemination Authors, Affiliations and Addresses

This study was conducted to assess whether varying the time of artificial insemination (AI) after detection of estrus influences the sex ratio of Japanese Black cows offspring. Data were collected from 1,829 inseminated cows, of which 753 gave birth to calves, over a period of two and a half years. The animals were divided in two groups: the early AI group (3 h after estrus detection) and late ...

Protein biomarkers for male artificial insemination subfertility in bovine spermatozoa

Background Although artificial insemination (AI) technique is an established biotechnology for bovine reproduction, the results of AI (conception rates) have a tendency to decline gradually. To our annoyance, moreover, AI-subfertile bulls have been occasionally found in the AI centers. To resolve these serious problems, it is necessary to control the sperm quality more strictly by the examinati...

Free flow electrophoresis of chloroplasts.

Highly purified intact chloroplasts were isolated from spinach (Spinacia oleracea L.) leaves by free flow electrophoresis. Morphological and biochemical studies showed that the fraction enriched in intact chloroplasts has a higher protein to chlorophyll ratio and a higher linolenic acid content than the broken organelles of the other fraction. The intact chloroplasts prepared by electrophoresis...

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...