BERGMAN E N.Energy contributions of volatile fatty acids from the gastrointestinal tract in various species[J].Physiological Reviews,1990,70:1580-1588.
[4]
SHEN Z,SEYFERT H M,LOHRKE B,et al.An energy-rich diet causes rumen papillae proliferation associated with more IGF type Ⅰ receptors and increased plasma IGF-Ⅰ concentrations in young goats[J].The Journal of Nutrition,2004,134:11-7.
LIVAK K J,SCHMITGEN T D.Analysis of relative gene expression data using real-time quantitative PCR and the 2-△△Ct method[J].Methods,2001,25:402-408.
[9]
ONTSOUKA E C,HAMMON H M,BLUM J W.Expression of insulin-like growth factors (IGF)-Ⅰ and-Ⅱ,IGF-binding proteins-Ⅱ and -Ⅲ,and receptors for growth hormone,IGF type-Ⅰ and -Ⅱ and insulin in the gastrointestinal tract of neonatal calves[J].Growth Factors,2004,22(l):63-69.
[10]
BREIER B H.Regulation of protein and energy metabolism by the somatotropic axis[J].Dourest Animal Endocrinol,1999,17(23):209-218.
[11]
SIMMEN F A,BADINGA L,GERRN M L,et al.The porcine insulin-like growth factor system:at the interface of nutrition,growth and reproduction[J].The Journal of Nutrition,1998,128(2):315S-320S.
[12]
MACRAE J C.Regulation of protein metabolism[C]//Rowett research institute annual report. :Rowett Research Institute,1992:84-90.
[13]
WHANG K Y,DONOVAN S M,EASTER R A.Effects of protein deprivation on subsequent efficiency of dietary protein utiliza-tion in finishing pigs[J].Asian-Austrilia Journal of Animal Science,2000,13:659-665.
NEOGRADY Z,GALFI P,KUTAS F.Effect of intraruminal butyrate infusion on the plasma insulin level in sheep[J].Acta Veterinaria Hungarica,1989,37(3):247-53.