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Effects of fat-protein supplementation of diets for cows in early lactation on milk yield and composition  [2006]

Strusinska, D.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management) E-mail:danuta.strusinska@uwm.edu.pl Minakowski, D.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management) Pysera, B.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management) Kaliniewicz, J.(University of Warmia and Mazury, Olsztyn (Poland). Dept. of Animal Nutrition and Feed Management)

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Abstract
An experiment was carried out on 37 high-performance Holstein-Friesian cows during the first 120 days of lactation in order to determine the effects of energy-protein supplementation on milk yield and composition. The cows were fed balanced diets and a concentrate containing 19% crude protein (group 1) or 17.5% crude protein and 1 kg of fat-protein supplement Megapro Plus (MP) (group 2) or 19% crude protein and 1 kg of MP (group 3). In comparison with the group 1, the mean daily milk yield recorded in groups 2 and 3 was by 10.3% higher and FCM yield increased by 15.5% and 12.1%, respectively. A decrease was noted in solids-non-fat (group 2) and somatic cell count. MP supplementation of a diet with a reduced (to 3%) "00" rapeseed meal concentration in concentrate (group 2) resulted in a significant increase in the concentrations of unsaturated fatty acids and hypocholesterolaemic acids in milk, recorded on the 120th day of lactation.
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Other subjects

  • densidad
  • proteine du lait
  • composicion quimica
  • valeur nutritive
  • teneur en proteines
  • aditivos de piensos
  • contenido de lipidos
  • nutritive value
  • complement alimentaire
  • rendement laitier
  • feed additives
  • acidez
  • dairy cows
  • saturated fatty acids
  • suplementos
  • alimentacion de los animales
  • nitrogen content
  • composition chimique
  • acidite
  • acidos grasos saturados
  • heat tolerance
  • acide gras sature
  • whey protein
  • caseine
  • unsaturated fatty acids
  • nitrogeno no proteico
  • vache laitiere
  • vacas lecheras
  • casein
  • numeration cellulaire somatique
  • contenido proteico
  • dry matter content
  • lipid content
  • somatic cell count
  • supplements
  • teneur en lipides
  • acide gras insature
  • proteinas de la leche
  • conteo de celulas somaticas
  • additif aux aliments des animaux
  • alimentation des animaux
  • valor nutritivo
  • lait de vache
  • contenido de nitrogeno
  • milk protein
  • tolerance a la chaleur
  • caseina
  • lactosa
  • azote non proteique
  • proteinas de suero de leche
  • acidos grasos insaturados
  • lactose
  • uree
  • milk yield
  • teneur en azote
  • urea
  • densite
  • feeds
  • piensos
  • animal feeding
  • teneur en matiere seche
  • contenido de materia seca
  • leche de vaca
  • nonprotein nitrogen
  • density
  • rendimiento lechero
  • tolerancia al calor
  • protein content
  • acidity
  • ph
  • proteine de lactoserum
  • chemical composition
  • aliment pour animaux
  • cow milk

From the journal

Czech Journal of Animal Science - UZPI (Czech Republic)

ISSN : 1212-1819

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