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Nutrition during the dry period and hepatic lipid metabolism of periparturient dairy cows

Grum, D.E. (University of Illinois, Urbana.) ; Drackley, J.K ; Younker, R.S ; Lacount, D.W ; Veenhuizen, J.J

Journal of dairy science, 1996-10, Vol.79 (10), p.1850-1864 [Periódico revisado por pares]

Savoy, IL: Am Dairy Sci Assoc

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Título:
Nutrition during the dry period and hepatic lipid metabolism of periparturient dairy cows
Autor: Grum, D.E. (University of Illinois, Urbana.) ; Drackley, J.K ; Younker, R.S ; Lacount, D.W ; Veenhuizen, J.J
Assuntos: ACIDE GRAS ; ACIDOS GRASOS ; Animal Nutritional Physiological Phenomena ; Animal productions ; Animals ; AZUCAR EN SANGRE ; Biological and medical sciences ; CARNITINA ; CARNITINE ; Cattle - physiology ; COMPOSICION QUIMICA ; COMPOSITION CHIMIQUE ; CONDICION CORPORAL ; CONTENIDO DE LIPIDOS ; CONTENIDO DE MATERIA SECA ; CONTENIDO PROTEICO ; CORPS GRAS ; DIETA ; Dietary Fats - administration & dosage ; Edible Grain ; Esterification ; ETAT CORPOREL ; FACTEUR DE CROISSANCE IGF ; FACTOR DE CRECIMIENTO IGF ; Fatty Acids, Nonesterified - blood ; Female ; FOIE ; FONCTION PHYSIOLOGIQUE ; FUNCION FISIOLOGICA ; Fundamental and applied biological sciences. Psychology ; GLICOGENO ; GLYCOGENE ; GRASA DE LA LECHE ; GRASAS ; HIGADO ; INGESTION DE NUTRIENTES ; INGESTION DE PIENSOS ; INGESTION DE SUBSTANCES NUTRITIVES ; INSULINA ; INSULINE ; Labor, Obstetric ; Lactation - physiology ; Lipid Metabolism ; Liver - metabolism ; Liver. Bile. Biliary tracts ; MAIS ; MAIZ ; MATIERE GRASSE DU LAIT ; METABOLISME DES LIPIDES ; METABOLISMO DE LIPIDOS ; Microbodies - metabolism ; ORGANITE CELLULAIRE ; ORGANULOS CITOPLASMICOS ; OXIDACION ; Oxidation-Reduction ; OXYDATION ; Palmitic Acid - metabolism ; PARTO ; PARTURITION ; PERIODE DE TARISSEMENT ; PERIODE PERINATALE ; PERIODO DE SECADO ; PERIODO PERINATAL ; PESO ; PESO AL NACIMIENTO ; PLASMA SANGUIN ; PLASMA SANGUINEO ; POIDS ; POIDS A LA NAISSANCE ; Pregnancy ; PRISE ALIMENTAIRE (ANIMAUX) ; PROTEINAS DE LA LECHE ; PROTEINE DU LAIT ; REGIME ALIMENTAIRE ; RENDEMENT LAITIER ; RENDIMIENTO LECHERO ; SOMATOTROPINA ; SOMATOTROPINE ; SUCRE DU SANG ; TENEUR EN LIPIDES ; TENEUR EN MATIERE SECHE ; TENEUR EN PROTEINES ; TERNERO ; Terrestrial animal productions ; THYROXINE ; TIROXINA ; TORTAS DE SOJA ; TOURTEAU DE SOJA ; TRIGLICERIDOS ; TRIGLYCERIDE ; Triglycerides - metabolism ; TRIIODOTHYRONINE ; TRIYODOTIRONINA ; VACAS LECHERAS ; VACHE LAITIERE ; VEAU ; Vertebrates ; Vertebrates: digestive system
É parte de: Journal of dairy science, 1996-10, Vol.79 (10), p.1850-1864
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Descrição: From dry-off until 7 d before expected parturition date, 30 Holstein cows were fed a low energy diet (control) to maintain body condition or high energy diets (high fat or isocaloric high grain) to attempt to increase body condition. After parturition, all cows were fed a common lactation diet. Body condition was unchanged for cows fed control or high grain diets, but was decreased for cows fed the high fat diet because DMI was decreased. Cows fed the high fat diet during the dry period had decreased triglyceride accumulation in the liver at 1 d postpartum, which was accompanied by lowered plasma NEFA, increased peroxisomal beta-oxidation of palmitate by liver homogenates, and decreased esterification of palmitate by liver slices. During the last 3 wk prepartum, cows fed the high fat diet had lower glycogen and higher acid-soluble carnitine in liver, higher concentrations of NEFA and bST in plasma, higher ratio of triiodothyronine to thyroxine in plasma, and lower concentrations of insulin and thyroxine in plasma than did cows fed the high grain diet. After parturition, cows fed the high fat diet during the dry period had decreased percentage and production of milk fat; differences among treatments were not significant for DMI, body condition, milk production, or milk protein. Periparturient lipid metabolism was altered significantly in cows fed a high fat diet during the dry period, although diet composition and nutrient intakes were confounded
Editor: Savoy, IL: Am Dairy Sci Assoc
Idioma: Inglês

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Nutrition during the dry period and hepatic lipid metabolism of periparturient dairy cows

Grum, D.E. (University of Illinois, Urbana.) ; Drackley, J.K ; Younker, R.S ; Lacount, D.W ; Veenhuizen, J.J

Savoy, IL: Am Dairy Sci Assoc

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