0.857
IF5
0.900
IF
Q3
JCR
0.92
CiteScore
0.405
SJR
Q2
SJR
20
MNiSW
165.24
ICV
SHORT COMMUNICATION
 
CC-BY 4.0
 
 

Effect of milk thistle (Sylibum marianum L.) endosperm in the diet for cows on milk yield and fatty acid profiles

A. Potkański 1,  
J. Kowalczyk 2,  
W. Nowak 1,  
M. Czauderna 2,  
 
1
Institute of Animal Nutrition and Feed Management, August Cieszkowski Agricultural University, Wołyńska 33, 60-637 Poznań, Poland
2
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
J. Anim. Feed Sci. 2001;10(Suppl. 2):83–89
Publish date: 2001-06-28
KEYWORDS
ABSTRACT
The experiment was carried out on 30 multiparous Black-and-White Lowland cows from 45 to 70 days of lactation, divided into three groups according to calving date and milk yield, and fed a basic ration consisting of maize, grass and sugar beet pulp silages with concentrate for the control group. In both of experimental groups, 20% of concentrate was substituted with endosperm from milk thistle (Sylibum marianum L.) and 3% of calcium carbonate, but in one of the experimental groups, 1.5% of buffering sodium carbonate was additionally added to the concentrate mixture. Endosperm of milk thistle contained 23% fat with a high proportion of unsaturated fatty acids. The mean fat content in the milk of the experimental groups was similar (4.83 and 4.61%, respectively) but significantly higher (P < 0.05) compared with the control group (4.27%). A decline in the percentage of short-chain (C8:0, C10:0, C12:0) and medium-chain (C14:0, C16:0) fatty acids was observed along with a simultaneous advantageous, from the dietary point of view, increase in the percentage of unsaturated fatty acids (C18:0, Δ-6-cis-C18:1, Δ-9-12-cis-C18:2) in the milk of cows of the experimental groups.
ISSN:1230-1388