Zobrazeno 1 - 10
of 209
pro vyhledávání: '"M, Duplessis"'
Autor:
C.L. Girard, M. Duplessis
Publikováno v:
Animal, Vol 17, Iss , Pp 100834- (2023)
Synthesis of B vitamins by the rumen microbiota is usually sufficient to avoid the appearance of clinical deficiency symptoms in dairy cows under normal feeding conditions. Nevertheless, it is now generally accepted that vitamin deficiency is much mo
Externí odkaz:
https://doaj.org/article/bf31a73f3455422ea17448391ef08e96
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 8, Pp 7097-7110 (2022)
ABSTRACT: Biotin (B8), folate (B9), and vitamin B12 (B12) are involved in several metabolic reactions related to energy metabolism. We hypothesized that a low supply of one of these vitamins during the transition period would impair metabolic status.
Externí odkaz:
https://doaj.org/article/73cd23e30680425b936504c61a0f35a7
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 8, Pp 7079-7096 (2022)
ABSTRACT: Biotin (B8), folates (B9), and vitamin B12 (B12) are involved and interrelated in several metabolic reactions related to energy and protein metabolism. We hypothesized that a low supply of one of the latter vitamins during the transition pe
Externí odkaz:
https://doaj.org/article/dbdfeb5a000647238f288f0a6b3faa01
Performance perception of Canadian dairy producers when transitioning to an automatic milking system
Publikováno v:
JDS Communications, Vol 2, Iss 4, Pp 212-216 (2021)
Adoption of automated milking systems (AMS) has increased exponentially around the world in recent years. The objective of this observational study was to evaluate how producer perception of changes in cow-average milk yield and somatic cell count (S
Externí odkaz:
https://doaj.org/article/c710b12dcf6a496fb60a8193f65a08c2
Publikováno v:
Animal, Vol 13, Iss 9, Pp 2101-2109 (2019)
As vitamin B12 is only synthesized by bacteria, ruminant products, especially dairy products, are excellent sources of this vitamin. This study aims to identify if diet and cow characteristics could affect vitamin B12 concentration in milk of dairy c
Externí odkaz:
https://doaj.org/article/1bf12377b0334a5792746404f293ac1c
Autor:
C.L. Girard, M. Duplessis
Publikováno v:
Journal of Dairy Science. 104:1111-1122
The aim of the study was to evaluate glucose and insulin metabolism of cows receiving a supplementation of biotin (B8), folic acid (B9), and vitamin B12 (B12) during the transition period. According to a 2 × 2 factorial arrangement, 32 cows were ran
Publikováno v:
Journal of Dairy Science. 103:7540-7546
The purpose of this study was (1) to predict the quantitative concentration of vitamin B12 in milk using mid-infrared (MIR) spectrometry, and (2) to evaluate the potential of MIR spectra to discriminate different clusters of records based on their B1
Autor:
M. Duplessis, Z. Zhou, Joseph W. McFadden, John K. Bernard, Christiane L. Girard, Heather M. White, Sha Tao
Publikováno v:
Journal of Dairy Science. 103:5668-5683
The present review focuses on methyl donor metabolism and nutrition in the periparturient and lactating dairy cow. Methyl donors are involved in one-carbon metabolism, which includes the folate and Met cycles. These cycles work in unison to support l
Publikováno v:
Journal of Dairy Science. 103:2883-2895
The objective of this cross-sectional study was to assess the variability of plasma folate and vitamin B12 concentrations in lactating Holstein cows across the United States and Canada. We also evaluated the effect of diet composition and cow charact
Publikováno v:
Journal of dairy science. 105(8)
Biotin (B