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Vpliv vročinskega stresa na proizvodne lastnosti v čredi krav molznic
ID Hafner, Monika (Author), ID Klopčič, Marija (Mentor) More about this mentor... This link opens in a new window

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Abstract
V čredah krav molznic je zagotavljanje dobrega počutja, udobja in ustreznega zdravja živali ključnega pomena za uspešno prirejo mleka. Mikroklima v hlevu (temperatura, vlaga in pretok zraka) močno vpliva na počutje in zdravje krav molznic, na konzumacijo suhe snovi krmnega obroka, na mlečnost, kakovost in vsebnost sestavin mleka ter plodnost. Živali so še posebej v poletnem času visokih temperatur v povezavi s povečano vsebnostjo vlage izpostavljene vročinskemu stresu, ki ima za posledico manjšo konzumacijo krme, manjšo mlečnost, slabšo vsebnost sestavin mleka, povečano število somatskih celic in precej slabšo plodnost. Zaradi slabše vsebnosti sestavin in kakovosti mleka, rejci za isto količino prodanega mleka dobijo manj, kar lahko precej zmanjša prihodek kmetije. Dodatno je lahko v tem obdobju prizadeta tudi reprodukcija krav molznic, predvsem visoko produktivnih krav. Zato rejci iščejo rešitve za zmanjšanje negativnih vplivov vročinskega stresa. V hleve lahko namestimo ventilatorje in škropilnike, ki dodatno hladijo zrak in živali. Za večjo konzumacijo krme zagotovimo kakovostno in svežo krmo, ki jo pokladamo v hladnejšem delu dneva. Najbolj pomembno je, da imajo krave molznice zagotovljeno dovolj veliko količino pitne vode in da so napajalniki čisti.

Language:Slovenian
Keywords:govedo, krave molznice, vročinski stres, proizvodne lastnosti
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2024
PID:20.500.12556/RUL-162614 This link opens in a new window
COBISS.SI-ID:210535171 This link opens in a new window
Publication date in RUL:26.09.2024
Views:76
Downloads:961
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Secondary language

Language:English
Title:Effect of heat stress on production traits in dairy herd
Abstract:
Ensuring animal welfare, comfort and health is crucial for successful milk production in dairy herds. The microclimate in the barn (temperature, humidity and air flow) has a significant influence on the well-being and health of dairy cows, their dry matter intake, milk yield, milk quality and milk content as well as fertility. Especially in the summer months with high temperatures and increased humidity, cows are exposed to heat stress, which leads to reduced feed intake, lower milk yield, poorer milk content, a higher somatic cell count and significantly lower fertility. Due to the poorer milk quality and lower milk content, farmers receive less income for the same amount of milk, which can significantly reduce farm income. In addition, the reproduction can be impaired during this time, especially in the case of high-yielding cows. Farmers are therefore looking for solutions to mitigate the negative effects of heat stress. These include installing fans and sprinklers in the barns to further cool the air and the animals, providing high quality and fresh feed during the cooler times of the day. The most important action is to ensure a sufficient access to clean drinking water.

Keywords:cattle, dairy cows, heat stress, production traits

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