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Effect of melatonin on the reproductive characteristics of rams of north east Bulgarian fine fleece breed
(Publ House Bulgarian Acad Sci, Sofia, 2014)
Some ruminant species, including sheep, show a markedly seasonal breeding cycle. There is evidence for the practical use of the pineal hormone melatonin to improve reproduction in sheep but the mechanism of action of the ...
Seasonal variations in enzyme activity in Ovies aries seminal plasma
(Book of abstracts of National Scientific conference "75 years Institute of Neurobilogy" 15-16.december, Sofia, Bulgaria, 12-2022)
Sheep (Ovies aries) are mainly seasonal polycyclic animals. Sperm production is influenced by many factors, including daylight length, climate temperature, humidity, and melatonin secretion, with females becoming fertile ...
Analysis of vitality and biochemical parameters in freeze-thawed seminal plasma of rams
(Institute for Animal Husbandry, Belgrade-Zemun, Serbia, 2022)
The current study aimed to examine the percentage changes of
viability sperm and the activity of the enzymes LDH, ALP, GOT / AST, GPT /
ALT in the sperm plasma of Lacaune rams, before and after cryopreservation. For
this ...
Study of the relationship between sperm parameters and the activity of creatine kinase in the process of cryopreservation
(Faculty of Biology, Sofia University, Bulgaria, 11-2021)
The aim of the present study was to determine a possible relationship between sperm
parameters and activity of creatinine kinase (CK) in the process of cryopreservation.
To achieve this goal, 14 ejaculates of 7 rams of ...