Plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows

In dairy cows, an increase in plasma concentration of glucose-dependent insulinotropic polypeptide (GIP) is associated with an increase in metabolizable energy intake, but the role of GIP in energy partitioning of dairy cattle is not certain. The objective of this study was to examine the relationsh...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Relling, Alejandro Enrique, Crompton, L. A., Loerch, S. C., Reynolds, C. K.
Formato: Articulo Comunicacion
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Veterinarias
Dairy cow
Energy partitioning
Glucose-dependent insulinotropic polypeptide
Milk energy output
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85404
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85404
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Veterinarias
Dairy cow
Energy partitioning
Glucose-dependent insulinotropic polypeptide
Milk energy output
spellingShingle Ciencias Veterinarias
Dairy cow
Energy partitioning
Glucose-dependent insulinotropic polypeptide
Milk energy output
Relling, Alejandro Enrique
Crompton, L. A.
Loerch, S. C.
Reynolds, C. K.
Plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows
topic_facet Ciencias Veterinarias
Dairy cow
Energy partitioning
Glucose-dependent insulinotropic polypeptide
Milk energy output
description In dairy cows, an increase in plasma concentration of glucose-dependent insulinotropic polypeptide (GIP) is associated with an increase in metabolizable energy intake, but the role of GIP in energy partitioning of dairy cattle is not certain. The objective of this study was to examine the relationship between plasma GIP concentrations and energy partitioning toward milk production. Four mid-lactation, primiparous, rumen-fistulated Holstein-Friesian cows were fed a control diet of 55% forage and 45% concentrate [dry matter (DM) basis] in a 4. ×. 4 Latin square design with 4-wk periods. The 4 treatments were (1) control diet fed at 1000 and 1600. h, and (2) once-daily (1000. h) feeding, (3) twice-daily (1000 and 1600. h) feeding, and (4) 4 times/d (1000, 1600, 2200 and 0400. h) feeding of the control diet plus 1 dose (1.75. kg on a DM basis at 0955. h) into the rumen of supplemental vegetable proteins (Amino Green; SCA NuTec Ltd., Thirsk, UK). Measurements of respiratory exchange and energy balance were obtained over 4. d during the last week of each period while cows were housed in open-circuit respiration chambers. Blood was collected from the jugular vein every 30. min for 12. h, using indwelling catheters, starting at 0800. h on d 20 of each period. Plasma GIP concentration was measured in samples pooled over each 5 consecutive blood samplings. The relationships between plasma GIP, DM intake, heat production, respiratory quotient (RQ), milk yield, and milk energy output were analyzed using linear correlation procedures, with metabolizable intake as a partial variant. Plasma GIP concentration was not correlated with heat production, or milk yield, but was positively correlated with milk energy yield (correlation coefficient. = 0.67) and negatively correlated with RQ (correlation coefficient. = -0.72). The correlations between GIP with RQ and milk energy output do not imply causality, but support a role for GIP in the regulation of energy metabolism in dairy cows.
format Articulo
Comunicacion
author Relling, Alejandro Enrique
Crompton, L. A.
Loerch, S. C.
Reynolds, C. K.
author_facet Relling, Alejandro Enrique
Crompton, L. A.
Loerch, S. C.
Reynolds, C. K.
author_sort Relling, Alejandro Enrique
title Plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows
title_short Plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows
title_full Plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows
title_fullStr Plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows
title_full_unstemmed Plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows
title_sort plasma concentration of glucose-dependent insulinotropic polypeptide may regulate milk energy production in lactating dairy cows
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/85404
work_keys_str_mv AT rellingalejandroenrique plasmaconcentrationofglucosedependentinsulinotropicpolypeptidemayregulatemilkenergyproductioninlactatingdairycows
AT cromptonla plasmaconcentrationofglucosedependentinsulinotropicpolypeptidemayregulatemilkenergyproductioninlactatingdairycows
AT loerchsc plasmaconcentrationofglucosedependentinsulinotropicpolypeptidemayregulatemilkenergyproductioninlactatingdairycows
AT reynoldsck plasmaconcentrationofglucosedependentinsulinotropicpolypeptidemayregulatemilkenergyproductioninlactatingdairycows
bdutipo_str Repositorios
_version_ 1764820489366142976

Ejemplares similares