0.857
IF5
0.900
IF
Q3
JCR
0.92
CiteScore
0.405
SJR
Q2
SJR
20
MNiSW
142.18
ICV
SHORT COMMUNICATION
 
CC-BY 4.0
 
 

Characteristics of milk production and plasma levels of growth hormone and insulin in Japanese Black cows

H. Shingu 1  ,  
K. Hodate 2,  
S. Kushibiki 1,  
Y. Ueda 1,  
E. Touno 1,  
M. Shinoda 1,  
 
1
Department of Animal Production and Grasslands Farming, National Agricultural Research, Center for Tohoku Region, Morioka, Iwate, 020-0198, Japan
2
School of Veterinary Medicine and Animal Sciences, Kitasato University, Towada, Aomori, 034-8628, Japan
3
National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, 305-8561, Japan
J. Anim. Feed Sci. 2004;13(Suppl. 1):559–562
Publish date: 2004-08-30
KEYWORDS:
ABSTRACT:
The aim of present study was to examine characteristics of milk yield and secretion of growth hormone (GH) and insulin in Japanese Black cows (beef type) during lactation. (Experiment 1) Milk yield and plasma concentrations of hormones in Japanese Black cows were compared with those in Holstein cows (dairy type). Japanese Black cows had smaller milk yield and secreted less GH but more insulin than Holstein cows. (Experiment 2) Effects of GH-releasing hormone (GHRH) on milk yield and plasma concentrations of hormones in Japanese Black cows were examined. Treatment with GHRH induced increases in milk yield (17.4%) and in GH and insulin concentrations.
CORRESPONDING AUTHOR:
H. Shingu   
Department of Animal Production and Grasslands Farming, National Agricultural Research, Center for Tohoku Region, Morioka, Iwate, 020-0198, Japan
ISSN:1230-1388