scholarly journals Effect of E. coli vaccination during the dry period on the immune function of Holstein cows

2012 ◽  
Vol 3 (1) ◽  
pp. 1-6
Author(s):  
K. Okada ◽  
T. Komatsu ◽  
M. Sato ◽  
Y. Niwa ◽  
M. Aoki ◽  
...  
Keyword(s):  
Immune Function ◽  
Holstein Cows ◽  
Dry Period ◽  
E Coli

Effects of short dry period on complete-lactation milk and component yield in Holstein cows

2013 ◽  
Vol 84 (3) ◽  
pp. 349-359
Author(s):  
Masato NAKAMURA ◽  
Kei-ichi NAKAJIMA ◽  
Yuji TAKAHASHI ◽  
Hiroki SHIONO
Keyword(s):  
Holstein Cows ◽  
Dry Period

Access to shade during the dry period improves the performance of multiparous Holstein cows

2021 ◽  
Author(s):  
Lorena Román ◽  
Jessica T. Morales Piñeyrúa ◽  
Georgget Banchero ◽  
Alejandro La Manna
Keyword(s):  
Holstein Cows ◽  
Dry Period

scholarly journals Effects of dry period length on follicular dynamics in early lactating Holstein cows

2009 ◽  
Vol 2009 ◽  
pp. 134-134
Author(s):  
A Soleimani ◽  
A Heravi Moussavi ◽  
M Danesh Mesgaran ◽  
S Safa
Keyword(s):  
Dairy Cow ◽  
Detrimental Effect ◽  
Good Reason ◽  
Period Length ◽  
Holstein Cows ◽  
Dry Period ◽  
Management Change ◽  
Lactating Cows ◽  
Current Advice ◽  
Follicular Dynamics

For profitable production of milk, a nonlactating or dry period is established between lactations of dairy cow. There has been substantial recent interest in shortening dry periods. Physiological studies show that the changes the udder goes through to prepare for the next lactation take about three weeks, and yet current advice is that the most appropriate dry period for a modern dairy cow is 45 to 60 days. More recent studies show good reason to question that advice, and suggest dry periods of 30 to 35 days have no detrimental effect on production, but information relating the effects of dry period to subsequent reproductive performance of lactating cows is sparse (Grummer, 2007). Also, the effect of this management change on follicular dynamic has not been adequately evaluated. Therefore, the objective of the present study was to determine the effects of dry period length on follicular dynamics in early lactating Holstein cows.

scholarly journals The role of altered immune function during the dry period in promoting the development of subclinical ketosis in early lactation

2019 ◽  
Vol 102 (10) ◽  
pp. 9241-9258 ◽  
Author(s):  
M. Mezzetti ◽  
A. Minuti ◽  
F. Piccioli-Cappelli ◽  
M. Amadori ◽  
M. Bionaz ◽  
...  
Keyword(s):  
Immune Function ◽  
Early Lactation ◽  
Dry Period ◽  
Subclinical Ketosis

scholarly journals Effects of Photoperiod During the Dry Period on Cellular Immune Function of Dairy Cows

2004 ◽  
Vol 87 (11) ◽  
pp. 3683-3689 ◽  
Author(s):  
T.L. Auchtung ◽  
J.L. Salak-Johnson ◽  
D.E. Morin ◽  
C.C. Mallard ◽  
G.E. Dahl
Keyword(s):  
Immune Function ◽  
Dairy Cows ◽  
Dry Period ◽  
Cellular Immune Function ◽  
Cellular Immune

Effect of cooling Holstein cows during the dry period on postpartum performance under heat stress conditions

2006 ◽  
Vol 105 (1-3) ◽  
pp. 198-206 ◽  
Author(s):  
L. Avendaño-Reyes ◽  
F.D. Alvarez-Valenzuela ◽  
A. Correa-Calderón ◽  
J.S. Saucedo-Quintero ◽  
P.H. Robinson ◽  
...  
Keyword(s):  
Heat Stress ◽  
Stress Conditions ◽  
Holstein Cows ◽  
Dry Period ◽  
Postpartum Performance

Whole blood optimization and genetic association of ex vivo TNF-α responsiveness to killed E. coli in Danish Holstein cows

2017 ◽  
Vol 201 ◽  
pp. 92-98
Author(s):  
M. Khatun ◽  
H.B.H. Jørgensen ◽  
A. Ehsani ◽  
M.S. Lund ◽  
G. Sahana ◽  
...  
Keyword(s):  
Genetic Association ◽  
Whole Blood ◽  
Ex Vivo ◽  
Holstein Cows ◽  
E Coli ◽  
Tnf Α

scholarly journals Uropathogenic E. coli subverts innate immune function of bladder epithelial cells

2008 ◽  
Vol 22 (S1) ◽  
Author(s):  
Jason Peter Trama ◽  
David Hilbert ◽  
Kristen Pascal ◽  
Erika Libby ◽  
Eli Mordechai ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Immune Function ◽  
Innate Immune ◽  
Innate Immune Function ◽  
E Coli

scholarly journals Effects of antibacterial compound of Saccharomyces cerevisiae from koumiss on immune function and caecal microflora of mice challenged with pathogenic Escherichia coli O8

2019 ◽  
Vol 88 (2) ◽  
pp. 233-241
Author(s):  
Yujie Chen ◽  
Chen Aorigele ◽  
Chunjie Wang ◽  
Wenqian Hou ◽  
Yunsheng Zheng ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Saccharomyces Cerevisiae ◽  
Immune Function ◽  
T Lymphocyte ◽  
Lymphocyte Subsets ◽  
Clinical Symptoms ◽  
Pathological Changes ◽  
T Lymphocyte Subsets ◽  
E Coli ◽  
Antibacterial Compound

The yeast Saccharomyces cerevisiae from koumiss has been shown to have antibacterial effects on Escherichia coli, possibly by producing antibacterial compound in metabolism; however, there is limited knowledge about its application in animal production. We therefore investigated the effects of an antibacterial compound of S. cerevisiae from koumiss on the immune function and caecal microflora of mice challenged with pathogenic Escherichia coli O8. Three groups were formed: negative control (NC), positive control (PC), and the antibacterial compound of S. cerevisiae at pH 2.0 (S2). Mice in the NC and PC groups were orally administered phosphate buffer solution (PBS) for 7 d. At 4 d, E. coli O8 was administered intraperitoneally in group PC. Mice in group S2 were first administered orally as mice in group NC, and subsequently intraperitoneally administered E. coli O8 as mice in group PC. Compared with the NC group, mice in the PC group displayed clinical symptoms and pathological changes in the small intestine. Small intestine villi in the S2 group also developed some histologically pathological changes but not as severe as in the PC group. Moreover, there was less mortality in the S2 group than in the PC group. In PC group, thymus indexes, immunoglobulin A (IgA) in serum and Bifidobacterium in caecum were decreased and E. coli in the caecum was increased. In the S2 group, CD8+ of T lymphocyte subsets in blood and Bifidobacterium in caecum were decreased, while spleen indexes, IgG, IgM in serum, and CD3+ of T lymphocyte subsets in blood were increased. This suggests that S2 can relieve clinical symptoms of mice challenged with pathogenic E. coli O8, enhance their immune function, and influence their caecal microflora. The study will provide a theoretical foundation for utilizing antibacterial compound of S. cerevisiae from koumiss for curative purposes.

scholarly journals Effect of somatic cell count on milk fat and protein in different parities and stages of lactation in Holstein cows

2017 ◽  
Vol 110 (1) ◽  
pp. 37
Author(s):  
Arash CHEGINI ◽  
Navid GHAVI HOSSEIN-ZADEH ◽  
Hossein HOSSEINI-MOGHADAM ◽  
Abdol Ahad SHADPARVAR
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Fat ◽  
Fixed Effects ◽  
Somatic Cell Count ◽  
Repeated Measurements ◽  
Somatic Cell Score ◽  
Holstein Cows ◽  
Dry Period ◽  
Protein Percentage

<p>The objective of this study was to investigate the effect of somatic cell score (SCS) on milk fat and protein in different parities and stages of lactation in Iranian Holstein cows. Records between June 2003 and January 2014 from 208,478 cows in lactations one to nine in 845 herds, comprising 2,456,303 monthly test-day (TD) records were used. The MIXED procedure of the SAS software with repeated measurements was used. The fixed effects of the model were herd, year-season of calving, month of TD, weeks of lactation, previous dry period length and somatic cell score (SCS) and covariate was calving age. Lactations were divided into six stages and analyses were performed within each stage. Also, different lactations were analyzed separately. Increase of SCS led to increase of milk fat and protein percentage and the increase of milk fat and protein associated with SCS was higher in early stages of lactation relative to later stages of lactation. Also, increase of milk fat and protein associated with SCS was higher in the first lactation rather than later lactations and decreased with increase of parity.</p>

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