[Effects of addition of palmitostearin or soybean oil on the protozoa in the rumen of dairy cows and sheep].
Addition of unprotected palmitostearin (P; 10.6% DM intake) or soybean oil (SO; 8.7% DMI) to a hay/diet concentrate (50/50) led to no significant differences in the total number of protozoa in rumen liquid of dairy cows and sheep, and in the distribution and postprandial variations of protozoan species. Chemical analysis of purified protozoa revealed no significant effects of lipid supplementation on their total N, RNA and lipid contents. However, there was a specific incorporation (P less than 0.05) of C16:0 and C18:2 acids in the free fatty acid fraction with the P and SO diets respectively.
Bauchart
D
D
Laboratoire d'Etude du Métabolisme Energétique, I.N.R.A., Theix, Ceyrat, France.
Legay-Carmier
F
F
Jouany
J P
JP
Michalet-Doreau
B
B
Doreau
M
M
D000818:Animals; D002417:Cattle / Q000469:parasitology*; D004041:Dietary Fats / Q000494:pharmacology*; D056890:Eukaryota / Q000187:drug effects*; D005260:Female; D008297:Male; D010938:Plant Oils / Q000494:pharmacology*; D012417:Rumen / Q000187:drug effects / Q000469:parasitology*; D012756:Sheep / Q000469:parasitology*; D013024:Soybean Oil / Q000494:pharmacology*
D004041:Dietary Fats; D010938:Plant Oils; D013024:Soybean Oil
Effets de l'addition de palmitostéarine ou d'huile de soja sur les protozoaires du rumen chez la vache laitière et chez le mouton.