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Choroby metaboliczne i mastitis – zrozumieć układ odpornościowy - Vetkompleksowo – serwis dla lekarzy weterynarii
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Wyszukaj w serwisie


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Choroby metaboliczne i mastitis – zrozumieć układ odpornościowy


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mastitis
fot. istock

Na całym świecie od 40 do 60% krów mlecznych cierpi z powodu ketozy, powszechnej, ale niedostatecznie wykrywanej choroby metabolicznej, która pojawia się, gdy krowa jest w poważnym stanie ujemnego bilansu energetycznego na początku laktacji. Ketoza może mieć znaczący wpływ na zdrowie i dobrostan krów, obniżając ich funkcje immunologiczne, płodność i wydajność. Szacuje się, że jej wystąpienie może kosztować gospodarstwa mleczne nawet 289 dolarów na krowę (1).

W okresie przejściowym krowy mają znacznie wyższe niż zwykle zapotrzebowanie na energię. Krowy zaczynają mobilizować tłuszcz do produkcji energii. Stają się słabsze, spada ich apetyt, a także funkcje immunologiczne. Nadmierny ujemny bilans energetyczny ma istotny wpływ na zdrowie (supresja immunologiczna, ketoza), płodność i wydajność krów mlecznych.

Patogeny atakują niezwykle szybko w wymieniu i macicy w okresie okołowycieleniowym. Nie ma czasu na rozwój systemu nabytego, aby stworzyć odpowiednią ochronę. Tak więc odporność wrodzona jest główną formą ochrony w przypadku chorób występujących we wczesnej laktacji (takich jak metritis, mastitis i zatrzymane łożysko).

Ketoza to stan charakteryzujący się nieprawidłowo podwyższonym stężeniem ciał ketonowych w tkankach i płynach ustrojowych. Ciała ketonowe to aceton (Ac), kwas acetooctowy (AcAc) oraz kwas P-hydroksymasłowy (BHB). Jednocześnie dochodzi do wzrostu poziomu wolnych kwasów tłuszczowych krążących we krwi i spadku poziomu glukozy.

[...]

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Mogą zainteresować Cię również


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Wizytówka firmy


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Sklep


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