Examination of oestrus-dependent alterations of bovine cervico-vaginal mucus glycosylation for potential as optimum fertilisation indicators

Abstract

Oestrus is the period in the sexual cycle of female mammals where they become most receptive to mating and are most fertile. Efficient detection of oestrus is a key component...

Features of the Imbalance in the Mass of Components of the Uterine-­Vaginal Mucus of Cows Due to the Harmful Effects of Endogenous Factors

“…In this regard, it is known that the accumulated products of inflammatory processes increase the level of thiol/disulphide homeostasis, which is a sensitive indicator of oxidative stress in the body (Emre et al, 2021); the pH level changes from acidic to alkaline (Berre et al, 2021;Charonis & Larson, 2006); follicular fluid and UVM contain elevated concentrations of pro-inflammatory interleukins (Boby et al, 2017;Brodzki et al, 2015;Mounir et al, 2018). This leads to changes in the hormonal and enzyme statuses of the body during puberty (Gonchar, 2014;Denisenko et al, 2008), increased risk of miscarriage (Adnane & Chapwanya, 2022;Ki, et al, 2014;Srinivasan et al, 2021), a low-weight foetus is born (Hernandez-Castellano et al, 2020).…”

“…However, even though the functional and biochemical aspects of the above issue are widely covered by the studies of Ukrainian (Gonchar, 2014;Denisenko et al, 2008;Kraevsky et al, 2020) and foreign scientists (Berre et al, 2021;Rodder & Mathew, 2018;Sheldon et al, 2020), there is still no particular information about the features of the correlation between changes in the colour and consistency of the UVM and the mass indicators of its components. Therefore, the task of this study was to assess the physical and chemical state of the samples of the UVM according to the obtained limits of volume parameters (8-40 cm 3 ), signs of colour (from transparent to grey-white), consistency (from fluid, thickviscous to liquid), ratios of the content (or homeostasis of components) and their harmful effect on the fertilisation rate of cows after the first insemination.…”

Scientific Horizons

“…In this regard, it is known that the accumulated products of inflammatory processes increase the level of thiol/disulphide homeostasis, which is a sensitive indicator of oxidative stress in the body (Emre et al, 2021); the pH level changes from acidic to alkaline (Berre et al, 2021;Charonis & Larson, 2006); follicular fluid and UVM contain elevated concentrations of pro-inflammatory interleukins (Boby et al, 2017;Brodzki et al, 2015;Mounir et al, 2018). This leads to changes in the hormonal and enzyme statuses of the body during puberty (Gonchar, 2014;Denisenko et al, 2008), increased risk of miscarriage (Adnane & Chapwanya, 2022;Ki, et al, 2014;Srinivasan et al, 2021), a low-weight foetus is born (Hernandez-Castellano et al, 2020).…”

“…However, even though the functional and biochemical aspects of the above issue are widely covered by the studies of Ukrainian (Gonchar, 2014;Denisenko et al, 2008;Kraevsky et al, 2020) and foreign scientists (Berre et al, 2021;Rodder & Mathew, 2018;Sheldon et al, 2020), there is still no particular information about the features of the correlation between changes in the colour and consistency of the UVM and the mass indicators of its components. Therefore, the task of this study was to assess the physical and chemical state of the samples of the UVM according to the obtained limits of volume parameters (8-40 cm 3 ), signs of colour (from transparent to grey-white), consistency (from fluid, thickviscous to liquid), ratios of the content (or homeostasis of components) and their harmful effect on the fertilisation rate of cows after the first insemination.…”