Description

• Tytuł:
  HEAT STRESS VS. CATTLE REPRODUCTION
• Twórca:
  pareek, chandra shekhar;
  Miętkiewska, Klaudia
• Opis:
  Dairy cattle are constantly exposed to many stressful situations activate changes in thefunctioning of the entire body of cows. Heat stress has been a major challenge forveterinarians and cattle producers in recent years. It is the result of external forcesassociated with high air temperature, causing changes in the body from the subcellular levelto the whole body. These changes are part of adaptation to new environmental conditionsand occur to avoid physiological dysfunctions caused by stress. The Holstein-Friesian breed isconsidered to be sensitive to high air temperature. Management of dairy cattle under heatstress conditions should consider animal welfare, which is a state of harmony between theanimal and the environment, expressed in high quality of life. Environmental factors such asair temperature, relative humidity, wind speed, and the intensity of solar radiation impact thefunctioning of dairy cows. Elevated temperatures and relative air humidity prevent theremoval of excess heat from the cow’s body. Heat is accumulating in animal organisms andgrowing body temperature, which in turn disturbs thermoregulation. Physiological methods ofcoping with heat stress include increased respiratory rate, panting, increased heart rate,sweating, decreased milk, and reproductive performance. Behavioral responses also appear,for example, increased thirst, reduced food intake or feed consumption in cooler parts of theday, looking for shade, and reduced physical activity. The reproduction of high-yielding cowsis exposed to negative changes caused by high temperatures. Dairy cows are more likely tolose their pregnancies in summer than in winter. The improvement of fertility in the summerperiod can be obtained using the available knowledge about the influence of heat stress onthe reproductive process. Heat stress can cause physiological changes in the ovaries,fallopian tubes, uterus, and embryos. Alteration of the fallopian tube or uterus environmentmay be due to disturbances in circulating hormones caused by heat stress, which affectsembryonic development. Maintaining proper fertility of cows in a situation where thetemperature and air humidity exceed the values specified for cows is very important formaintaining the profitability of the farm. The most important thing is to recognize heat stressconditions as early as possible in order to implement strategies to prevent its furtherdevelopment as soon as possible. The presentation will provide the current updates of heat stressproblems in cattle reproduction.
• Dostępność obiektu:
  free access
• Prawa:
  Prawa autorskie (c) 2023 chandra shekhar pareek, Klaudia Miętkiewska;
  https://creativecommons.org/licenses/by-nd/4.0
• Data:
  2023.07.09
• Typ:
  info:eu-repo/semantics/article;
  info:eu-repo/semantics/publishedVersion
• Język:
  English
• Źródło:
  Translational Research in Veterinary Science; Vol. 6 No. 1 (2023); 5-6;
  Translational Research In Veterinary Science; Tom 6 Nr 1 (2023); 5-6;
  2657-4489
• Format:
  application/pdf
• Wydawca:
  Nicolaus Copernicus University in Toruń
• Relacja: https://apcz.umk.pl/TRVS/article/view/63483/43167
• Temat i słowa kluczowe:
  heat stress;
  cattle;
  reproduction
• Identyfikator: https://apcz.umk.pl/TRVS/article/view/63483
• Dostawca danych:
  Akademicka Platforma Czasopism
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