NDLI: Impact des niveaux de B-hydroxybutyrate sur la productivité des chèvres laitières

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Impact des niveaux de B-hydroxybutyrate sur la productivité des chèvres laitières

Content Provider	Semantic Scholar
Author	Doré, Vincent
Copyright Year	2015
Abstract	Increase of β-hydroxybutyrate (BHBA) in blood is often associated with goats suffering from pregnancy toxemia (PT), an important disease of this specie. Considering there was no clear definition of hyperketonemia in dairy goat, the objectives of this study was to define pre-partum hyperketonemia in dairy goats using optimal blood BHBA value sampled on farm using a hand-held meter (Precision Xtra®) to indentify goats at greater risk of PT or dying during the last month of pregnancy. The hand-held meter was previously validated in dairy goats (n = 114) on farm (n = 3) and showed an excellent accuracy for measuring blood BHBA (r 2 = 0.95). The main study was conducted in 1081 dairy goats from 10 commercial herds in Québec (Canada). All pregnant goats were blood sampled weekly during the last five weeks of pregnancy. Blood was analyzed directly on farm for BHBA quantification using Precision Xtra® meter. Our result showed that it is possible to define pre-partum hyperketonemia using the risk of developing PT and mortality risk during the last month of pregnancy based of BHBA value on farm. The BHBA cutoffs retained varied from ≥ 0.4 to ≥ 0.9 mmol/L during the last five weeks prepartum when hyperketonemia definition was based on PT and ≥ 0.6 to ≥ 1.4 mmol/L when based on mortality. It was also demonstrated that hyperketonemic goats at 4 th week before kidding had the highest odds of subsequent PT and mortality. An early diagnosis of the disease is now possible using BHBA values.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://papyrus.bib.umontreal.ca/xmlui/bitstream/handle/1866/11949/Dore_Vincent_2014_memoire.pdf?isAllowed=y&sequence=4
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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