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- 12Ametaj, Burim N.
- 7Dunn, Suzanna M.
- 6Zebeli, Qendrim
- 4Iqbal, Summera
- 3Dervishi, Elda
- 3Hailemariam, Dagnachew
In this review article we present an overall summary of the role that high-grain/low forage diets have on rumen composition of microbiota and how changes in the diet affect the release of bacterial cell wall components that are toxic to the host. One of these toxic compounds is lipopolysaccharide...
Intraruminal administration of Megasphaera elsdenii modulated rumen fermentation profile in mid-lactation dairy cowsDownload
This study evaluated the effects of intraruminal administration of Megasphaera elsdenii on ruminal fermentation patterns, the profile of plasma metabolites, and milk yield and composition of mid-lactation dairy cows. Eight primiparous, ruminally cannulated Holstein cows were arranged in a paired...
Characterisation of bacterial microbiota of the vagina of dairy cows and isolation of pediocin-producing Pediococcus acidilacticiDownload
Background Uterine infections in dairy cows lower profitability of dairy operations. Infections of the reproductive tract are related to the overgrowth of pathogenic bacteria during the first three weeks after parturition. However, alterations in the vaginal microbiota composition in the first...
Maintaining a healthy rumen ecosystem is crucial to avoid systemic disorders in cattle, but also critical to ensure that milk and meat are produced from healthy animals in an efficient and cost-effective manner. In fact, today’s intensive management systems of cattle typically encourage the...
Profiles of energy metabolites and haptoglobin in dairy cows under organic management in Alberta farmsDownload
Profiles of energy metabolites and haptoglobin (Hp) in dairy cows that are transitioned from conventional to organic management in various Alberta farms were compared with those of dairy cows managed conventionally at the University of Alberta dairy farm. Blood samples were collected during the...
Oronasal administration of lipopolysaccharide prepartum modulated plasma metabolite patterns in periparturient dairy cowsDownload
The objective of this study was to evaluate whether repeated oronasal administration of LPS before parturition showed effects on metabolic and clinical responses in periparturient dairy cows. Hundred Holstein dairy cows were randomly allocated to two treatment groups (n = 50). Thirty cows out of...
Effects of prepartal oronasal administration of lipopolysaccharide on milk composition and productivity of transition Holstein cowsDownload
The aim of this study was to evaluate the effects of repeated oronasal administration of lipopolysaccharide (LPS) on milk composition and the overall productive performance of dairy cows. One hundred pregnant Holstein dairy cows were randomly assigned to two treatment groups (n = 50). 30 cows out...
Repeated oronasal exposure to lipopolysaccharide induced mucosal IgA responses in periparturient dairy cowsDownload
This study investigated the effects of repeated oronasal treatment with lipopolysaccharide (LPS) on the humoral immune responses in saliva, vaginal mucus, and the plasma markers of the acute phase response in periparturient dairy cows. One hundred pregnant Holstein cows were administered either 3...
Intravaginal lactic acid bacteria modulated local and systemic immune responses and lowered the incidence of uterine infections in periparturient dairy cowsDownload
The objective of this investigation was to evaluate whether intravaginal infusion of a lactic acid bacteria (LAB) cocktail around parturition could influence the immune response, incidence rate of uterine infections, and the overall health status of periparturient dairy cows. One hundred pregnant...
Innate immunity and carbohydrate metabolism alterations precede occurrence of subclinical mastitis in transition dairy cowsDownload
Background This study examined whether activation of innate immunity and alterations of carbohydrate and lipid metabolism precede development of subclinical mastitis (SCM). Methods Blood samples were collected from the coccygeal vein from 100 Holstein dairy cows at -8, -4, disease diagnosis week,...