<p>Feed intake, general condition, rumenal pH and lactic acid content was followed during feeding of starved reindeer on a coventional diet (RF-71). The result was a dramatic decrease of rumen pH (pH=5.1 in experiment no. Ill) a few hours after feeding of the coventional diet, but this could be counteracted significantly by addition of buffer (pH=6.4 in experiment no. Ill) of hydrogenated marine oil (pH=6.1 in experiment no. Ill) to the ration. The highest content of the lactic acid in the rumen was 40 mM in animals fed RF-71, whereas addition of buffer or hydrogenated marine oil completely supressed accumulation of this acid.</p><p>Foropptak, pH og melkesyre i vomma hos rein under overgangsforing med kraftfor tilsatt buffer og fett.</p><p>Abstract in Norwegian / Sammendrag: Forinntak, almentilstand, pH og melkesyreinnhold i vom ble registrert under foring av sultede rein med konvensjonelt kraftfor (reinfor 71 = RF-71). Det ble funnet et sterkt pH-fall i vomma (pH=5.1, forsøk III) få timer etter at dyrene startet å spise RF-71. Denne effekten ble redusert ved tilsetting av buffer (pH=6.4, forsøk III) eller herdet marint fett (pH=6.1, forsøk III) til dietten. De dyr som ble foret med RF-71 hadde et melkesyreinnhold i vomma på opp til 40 mM. Tilsetting av buffer eller herdet marint fett til dietten forhindret akkumulering av melkesyre.</p><p>Poron rehunkäyttö, pötsin pH ja maitohapposisältö siirtymävaiheen ruokinnassa käytettäessä väkirehua, johon on lisätty puskuria ja rasvaa.</p><p>Abstract in Finnish / Yhteenveto: Rehunkäyttoä, yleistilaa, pötsin pH:ta ja maitohapposisältöä tutkittiin ruokittaessa nälkiintyneitä poroja tavanomaisella väkirehulla (poron 71 = RF-71). Joitakin tuntejaruokinnan aloittamisen jälkeen havaittiin voimakas pötsin pH:n lasku (pH 5.1, koe III). Tämä vaikutus väheni kun poron nauttiman ravinnon joukkoon lisättiin puskuria (pH 6.4, koe III) tai merikaloista valmistettua kovetettua rasvaa (pH 6.1, koe III). RF-71 rehua nauttineiden eläinten pötsin maitohapposisältö oli 40 nM. Puskurin tai kovetetun merellisen eläinperäisen rasvan lisääminen ravintoon ehkäisi maitohapon kasaantumista.</p>
THE LACTIC ACID CONTENT OF MAMMALIAN BRAIN
