Rumen degradability and whole tract digestibility of flavonolignans from milk thistle (Silybum marianum) fruit expeller in dairy cows
L. Křížová, J. Watzková, J. Třináctý, M. Richter, M. Buchta
https://doi.org/10.17221/1285-CJASCitation:Křížová L., Watzková J., Třináctý J., Richter M., Buchta M. (2011): Rumen degradability and whole tract digestibility of flavonolignans from milk thistle (Silybum marianum) fruit expeller in dairy cows. Czech J. Anim. Sci., 56: 269-278.The objective of this study was to determine rumen degradability and total digestibility of flavonolignans from a milk thistle fruit expeller in dairy cows considering milk production and changes in plasma flavonolignans. The experiment was carried out on three lactating Holstein cows and was divided into three periods as follows: preliminary period (Pr, 3 days) was used for the diet stabilization followed by the adaptation period (A, 6 days) in which the treatment was applied and by the balance period (B, 4 days). Cows were fed individually twice a day (6:40 and 16:40 h) ad libitum the diet based on maize silage, lucerne hay and supplemental mixture. In the periods A and B the diet was supplemented with 150 g/day of milk thistle fruit expeller applied in two equal portions at each feeding. Average daily intake of dry matter and basic nutrients was similar in all periods (P > 0.05). Milk yield and composition were not affected by the treatment (P > 0.05). The milk thistle fruit expeller used in this experiment contained 4.10 ± 0.10 mass percentage of the silymarin complex. Digestibility of silybin A and silybin B was 40.0 and 45.5%, respectively. Digestibility of other components of the silymarin complex was 100%. The highest value of the effective degradation was found for taxifolin (59.11%), while the effective degradation of the other flavonolignans ranged from 23.28 to 35.19%. Animals receiving the milk thistle fruit expeller had a higher content of plasma conjugated silybin (P < 0.001) than those without its supplementation.
silymarin complex; in sacco technique; digestibility; plasma
Impact Factor (Web of Science):
2019: 0.835
Q3 – Agriculture, Dairy and Animal Science
5-Year Impact Factor: 1.103
SCImago Journal Rank (SCOPUS):
New Issue Alert
Join the journal on Facebook!
Ask for email notification.
Abstracted / Indexed in
Agrindex of AGRIS/FAO database
Animal Breeding Abstracts
CAB Abstracts
CNKI
Current Contents®/Agriculture, Biology and Environmental Sciences
Czech Agricultural and Food Bibliography
DOAJ (Directory of Open Access Journals)
Food Science and Technology Abstracts
Google Scholar
ISI Web of Knowledge®
J-Gate
Science Citation Index Expanded®
SCOPUS
TOXLINE PLUS
Web of Science®
Licence terms
All content is made freely available for non-commercial purposes, users are allowed to copy and redistribute the material, transform, and build upon the material as long as they cite the source.
Open Access Policy
This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.
Contact
Ing. Helena Čermáková, Ph.D.
Executive Editor (Editorial Office – publication)
e-mail: cjas
Address
Czech Journal of Animal Science
Czech Academy of Agricultural Sciences
Slezská 7
120 00 Praha 2
Czech Republic