Influence of the ecological conditions on breeding in closed covered brick barn of Black-and-White cows and some ethological reactions
2008
Krastev, K., Institute for Animal Science, Kostinbrod (Bulgaria) | Boychev, K., University of Forestry, Sofia (Bulgaria)
This study was done with the aim to establish the season dynamics of ethological indicators: lying, standing, feeding and drinking of milk cows with is result of such abiotic factors as: temperature, relative humidity and wind velocity movement in production environment. The animals were bred during the year in closed covered brick barn with natural ventilation. From the analysis of the received results is clear that the parameters of the ethological reactions are changing in a cycle during the seasons of the year. This is an expression of the reaction towards the influence of the abiotic factors of the environment.
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