نتایج جستجو برای: bull sperm

تعداد نتایج: 43630  

Journal: :KnE Life Sciences 2022

The aim of this research was to assess the effect age and body weight on semen quality. material used secondary data 50 Bali Bull from 2012 2018 which were grouped as follows. Age 2–4 years: (BW) low (260-408 kg), medium (409-557 kg) high (558-706 kg). 5–7 BW (314-470 (471-627 (628-784 8-10 (481-580 (581-680 (681-780 method in is a case study. obtained analyzed by using Nested Completely Random...

2015
Mohsen Sharafi Mahdi Zhandi Abdolhossein Shahverdi Malak Shakeri

BACKGROUND Cryopreservation of semen requires optimized conditions to minimize the harmful effects of various stresses. The main approach for protection of sperm against stress is based on the use of antioxidants and cryoprotectants, which are described as defensive methods. Recently, the application of controlled mild stressors has been de- scribed for activation of a temporary response in ooc...

Journal: :The Journal of General Physiology 1969
Robert Rikmenspoel Sandra Sinton John J. Janick

With the use of a specially developed incubation chamber the rates of motility, respiration, and fructolysis were measured simultaneously on semen samples. By inhibiting the respiration with antimycin A, and/or the fructolysis with 2-deoxyglucose, the rates of each of the two ATP-producing pathways could be reduced independently. In this way the ratio of the amount of free energy produced by re...

Journal: :Journal of cell science 2002
Trevor G Cooper Ching-Hei Yeung Roy Jones Marie-Claire Orgebin-Crist Bernard Robaire

In a recent Research Article by Sutovsky et al., the authors interpret their results to mean that in the normal animal the epididymis ‘...provides a mechanism for sperm quality control...’ and that ‘ubiquitinated (i.e. defective) sperm are subsequently phagocytosed by the epididymal epithelial cells’ (Sutovsky et al., 2001). This was based on observations that abnormal sperm were ubiquitin-labe...

Journal: :Folia biologica 2008
Bogdan Janicki Dorota Cygan-Szczegielniak

The Zn and Pb concentration was determined in 45 samples of bull semen from three Artificial Insemination Stations (A,B,C) differing in degree of environmental pollution. Bull semen was diluted with Biociphos-Plus to such an extent as to obtain 16 million sperm cells in an insemination dose. The research aimed at assessing the correlation between zinc, lead and other parameters influencing the ...

Journal: :Cryobiology 1992
J E Parks D V Lynch

Composition and thermotropic phase behavior of sperm membrane lipids from species ranging in sensitivity to cold shock were determined. Lipids from whole sperm and sperm plasma membrane were fractionated into neutral lipid, glycolipid, and phospholipid fractions. Compositional analyses were completed for free sterols, phospholipids and phospholipid-bound fatty acids. Phase transition temperatur...

Journal: :Buffalo Bulletin 2022

Present study was conducted to the morphometric characteristics of slaughtered Murrah buffalo bull testis and its correlation with seminal attributes epididymal semen. Total 56 pair testicles were procured from Allana, slaughterhouse, Arrora, Mass agro food Pvt. Ltd. Unnao Uttar Pradesh, India; maintained at Deep Frozen Semen Laboratory, College Veterinary science, animal Husbadry, Ayodhya, Ind...

Journal: :علوم دامی ایران 0
فردین فرهادی دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج ارمین توحیدی دانشیار، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج ملک شاکری استادیار، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج

the aim of this study was to investigate the effect of adding different levels of zinc sulfate in semen extender on bovine sperm quality during cryopreservation. semen was collected from 4 holstein bull twice a week and the proper samples were pooled. semen were allocated to four extender treatments consisted of 0, 50, 100, 150 µm of zinc sulfate in 5 replicates and then, were frozen. post-thaw...

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