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Last chance to listen to the state of the art knowledge on Acidosis and Rumen Health from international experts!

Recordings of the 10th International Symposium on the Nutrition of Herbivores (ISNH) Satellite event, organized in partnership with the French National Institute for Agricultural Research (INRA):

Multi-dimension of acidosis and rumen health,

a key challenge in the context of livestock precision farming

 


Recordings available until the 31st of October 2018: 

Rumen health and beyond: the root of digestive and systemic health disorders in cattle

Gregory Penner, Associate professor, College of Agriculture and Bioresources, University of Saskatchewan, USA > Read biography

Greg Penner talks about potential impacts arising from a digestive disorder classified as ruminal acidosis. The focus of his presentation was to cover associated outcomes that happen with excessive fermentation such as the impact of low pH short-chain fatty acid concentrations and hyperosmolarity, and the risk that they impose on epithelial function, specifically focusing on barrier absorptive function and potential for a pro-inflammatory response.

 

Feeding management of cattle and rumen health: risk factors

Alex Bach, Research Professor, IRCEA (Institucio Catalana de Recerca i Estudis Avancats,), Dpt of Ruminant Production of IRTA, Spain > Read biography

Alex Bach tells us about the risk factors contributing to ruminal acidosiss. Those risks are related to management, mixing of ingredients in the TMR and the way those ingredients are presented to the cows. It is important to consider those issues in order to prevent and to control rumen acidosis.

 

Interaction of Rumen health with cattle behaviour

Trevor de Vries, Associate Professor, Department of Animal and Poultry Science, University of Guelph, Canada > Read biography

Trevor de Vries conference focuses on the interaction of rumen health and cattle behavior, particularly in dairy cattle. Feeding behavior and rumination are keys to rumen health. De Vries explains how feeding management is important in order to prevent low rumen pH and acidosis. This management goes through how often the cows are fed, if the feed is always accessible, and by making sure the cows have sufficient space to access the feed whenever they want.

 

Rumen microbiota, rumen wall dynamics and rumen health

Leluo Guan, Professor, Faculty of Agricultural, Life and Environmental Sciences, University of Alberta, Canada > Read biography 

“The main outcome of my presentation is that when we try to understand ruminal acidosis or potentially SARA, we need to really look at both the host and the microbial as a whole. How potentially the host regulates microbial population and respond to the diet management, but also in the meantime how microbes can drive the functional change of the host.  I think we need more efforts in the future to understand how host genetics regulate variation in the acidosis responses, as well as how he hosts regulate microorganisms and to select what organisms to colonize that potentially also, and to lead to the varied individual variation in terms of acidosis.”

 

Rumen pH monitoring systems and peripheric indicators as potential predictors for rumen health

Clothilde Villot, Research Scientist, UMRH INRA, Clermont-Ferrand, France > Read biography

“How can we detect subacute ruminal acidosis in cows? First to have a good detection we potentially need to know the definition of subacute ruminal acidosis and fortunately, I think this definition is depending on what is our goal. Do we want a preventive detection of subacute ruminal acidosis, or do we want a real and proper diagnostic of this disease on-farm? Never mind, in order to answer this question we can look at two potential parameters. The first ones are rumen parameters, so indicators coming from the rumen where the disease is initiated and specifically we can look at rumen pH, or I would say reticular rumen pH. We have new tools that are able to measure continuously the rumen pH in real time and we can also use those tools on-farm.  They are really useful because it’s a non-invasive technique and at the same time we can have a very accurate analysis of rumen pH.  We can also look at non-rumen parameters because what is important for the cow actually with SARA is when we start to see some modification and the negative impact of this disease on for example the health and performance of the animals. We can look potentially at saliva, blood, milk, or urine indicators that combined together could help us to have relevant detection of the disease with high accuracy and high sensitivity and specificity to tackle this disease.”

 

Current strategies to limit risk factors: the use of feed additives, ATB, feeding practices

Helen Golder, Research Director, Scibus, Camden, NSW, Australia > Read biography

“Controlling ruminal acidosis is extremely challenging because we have to contend with a large amount of animal variability, but we do have some strategies that we can use for acidosis control and prevention. We can be more careful with our choice of feed substrates and feed management, we can use antibiotics or we can use non-antimicrobials, for example, buffers and neutralizing agents, yeasts, direct-fed microbes or exogenous enzymes.”