Het effect van langdurige butyraat supplementatie bij hoogproductieve melkkoeien rond de partus.

Leen Vandaele, Jan Van Eys, Bart D'Heer, Bart Ampe, Sam De Campeneere

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureC1: Artikels in proceedings van wetenschappelijke congressen, die niet inbegrepen zijn in A1, A2, A3 of P1

    Uittreksel

    The large demand of glucose in response to the steeply increase in milk production in the first days after calving results in a glucose shortage in the extra-mammary tissues. Black et al. (1966) indicated that increasing ruminal concentrations of butyrate might be beneficial to dairy cows in early lactation, because it might prevent the oxidation of pyruvate and therefore lead to increased conversion of pyruvate to oxaloacetate. Secondly, increased levels of beta-hydroxybutyrate can be used by the extra-mammary tissues instead of glucose (Holtenius and Holtenius, 1996). Both might lead to better performance in transition cows (DeFrain et al., 2004). The objective of this study was to explore the effect of prolonged daily butyrate (as sodium butyrate) supplementation around calving on milk production and composition, and blood glucose level in dairy cattle.
    The pre calving CTRL diet contained higher NDF (only far off) and higher NEL than the BUT diet (far off and close-up), but both diets were similar for DPI and RDPB (Table 1). During the post calving period the dietary composition was similar for CTRL and BUT. Furthermore daily intake of NEl (149±5 and 147±5 MJ/d), DPI (2207±45 and 2178±55 g/d) and RPDB (-128±75 and -139±102 g/d) did not differ between groups post-calving.
    Daily DM intake was not different between treatment groups. The mean milk yield of BUT cows was significantly lower than of CTRL cows, but fat and protein content were significantly higher in BUT group, which equalized the FPCM production as well as daily fat and protein production. The fact that cows in the BUT group seemed to be more sensitive to metabolic problems post calving (two cows with displaced abomasum in BUT and none in CTRL) might partially explain the lower milk yield in the BUT group. Previous work of Pires et al. (2007) showed that increasing NEFA augment insulin resistance in high producing dairy cows. Nevertheless, we found significantly lower blood glucose levels 2h and 4h after feeding in BUT cows. Ongoing analyses of blood NEFA and butyric acid concentration might assist in explaining these findings.
    In conclusion, prolonged supplementation with butyrate leads to a lower milk yield. However, daily fat and protein production were not different because of the increased milk fat and protein content of the BUT group. Additionally, prolonged butyrate supplementation resulted in lower post calving blood glucose levels

    TaalEngels
    TitelProceedings of 38th Animal Nutrition Forum
    Aantal pagina's2
    Plaats productieRoeselare
    Uitgeverij38th Animal Nutrition Research Forum
    Datum21-mei-2013
    Pagina's41-42
    StatusGepubliceerd - 21-mei-2013
    Evenement38 th Animal Nutrition Research Forum (2013) - Roeselare, België
    Duur: 21-mei-201321-mei-2013

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