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Dairy cattle ruminal performance

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Key mechanisms of action of a blend of plant extracts within the ruminants microbial systems. The results of several trials and published researches coming from every part of the world have recently brought to light new modes of action that explain the reasons why tannins foster an improvement in both animal welfare and performance, going deeper than the traditionally recognised ruminal protein by-pass mode of...
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Praful Kumar
Praful Kumar and 1 more
“Digestive disorders in cattle directly affect the economics of dairy farm” Ruminants occupy an important niche in modern agriculture because of their unique ability to digest fibres or roughage efficiently. Rumen ecology play a vital...
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Introduction The work of Dr. Mike Allen, Michigan State in the late 80’s, measuring NDF digestibility of different corn silage hybrids, initially resulted in much controversy. There was much resistance to the concept that differences in fiber digestibility in corn silage could have an impact on animal performance. He proceeded to do studies with BMR hybrids as well as with conventional hybrids both in lactating cow studies as well as a demonstration of a wide range...
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James Ambrose
Phileo by Lesaffre
Tips on managing sub-acute rumen acidosis at grass from James Ambrose, commercial and technical manager for Phileo Lesaffre Animal Care GB & Ireland...
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Today, due to rising feed costs, one of the key objectives for farmers is to optimize the value of the diet. The cornerstone of ruminant health and performance is the rumen, where forage and feed are converted into energy (volatile fatty acids, VFAs) and microbial protein thanks to the activity of the rumen microflora: bacteria, protozoa and fungi. The rumen microflora is responsible for fiber degradation, and the extent and efficiency of the process relies on various factors and determines...
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In the current context of the international dairy market, increasing milk production regarding quantity is no longer relevant due to low prices. Now more than ever, producing more milk fat and protein is a proven way to enhance herd profitability.  The best way to boost milk fat and protein is to promote rumen fermentation with a particular focus on fiber digestion. ...
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Valentin Nenov
Phileo by Lesaffre
Valentin Nenov, Global Ruminant Manager for Phileo Lesaffre Animal Care, speaks to us about rumen microbiota balance, during Eurotier 2016, in Hannover, Germany....
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For many years dietary protein binding has been considered the main property of tannins within animal nutrition, but more recent speculations have highlighted many other mechanisms of action for tannins. Antispasmodic effect on gastrointestinal passage, reduction of rumen starch degradation, local immune response modulation and antioxidant effect are some known examples, but perhaps the most important mechanism that explains the role of tannins, their strong and lasting impact on...
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Dr. Vivek Fellner
North Carolina State University - NCSU
North Carolina State University - NCSU
INTRODUCTION Rumen microbes ferment dietary carbohydrates and protein to obtain ATP, which in turn is the major source of energy required for microbial growth. The two major reactions of rumen fermentation are volatile fatty acids (VFA) and microbial cells; the former are a primary source of metabolizable energy and the latter the primary source of metabolizable amino acids for maintenance and milk synthesis. The efficiency with which dietary nutrients are converted to energy...
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Introduction Accurate predictions of nutrient supply and nutrient requirements are essential to modern ration formulations and animal production. Accurate and precise models allow provision of nutrients to meet requirements for maintenance and optimal production without supplying excess nutrients that contribute to inefficiency or environmental damage. Most nutrient models predict...
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Over the past 30 years, the concept of establishing requirements and evaluating nutritional adequacy by use of nutritional models for dairy cattle has taken over the feed industry. Private companies, universities, feed companies, governments and even individual nutritionists have developed models. It will be the purpose of this paper to look at some concepts governing nutritional modeling, recommend some techniques for evaluating a model, and look at a few...
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Michael Hutjens
University of Illinois
University of Illinois
Take Home Messages   By-product feeds can provide nutritional and economic benefits for dairy managers. Pricing and positioning are key focus areas to consider. Several questions must be managed for on-farm success. Feed variation must be considered when building dairy rations using by-product feeds.   ...
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Dr. Jim Quigley, Director of Calf and Heifer at Cargill, spoke to us and explained how to obtain a well developed rumen through balanced nutrition, during the Dairy Cattle Breeding and Rearing Symposium in Buenos Aires, Argentina. ...
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Background A recent study by the SDSU Dairy and Food Science Department investigated the effects of water quality on heifer preference and drinking behavior. Providing good quality water to livestock is a major challenge in the Midwest. Eastern South Dakota groundwater, which is used for drinking, industry, and agricultural purposes is hard, with high mineral content. Calcium and magnesium concentration affects this hardness....
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Preeti Lakhani
Preeti Lakhani and 1 more
INTRODUCTION The rumen ecosystem comprises a complex of dense microbial communities of bacteria, methanogens, protozoa, fungi and bacteriophages. Bacteriophage forms a closely integrated ecological unit with each other and the host animal, as well as playing a vital role in the nutritional, physiological, immunological and protective functions of the host and provides a variety of nutritional and health...
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Bill Braman
Chr. Hansen
The United States dairy pro­duction has continued to grow despite competition for land and other agricultural resources from other agronomic and livestock/poultry alternatives. More ef­ficient utilization of resources has now become a major objective of many dairies as they increase the size of their dairy herd despite a limited land base. In the Midwest and Northeast U.S. this growth has been driven by increases in use of corn silage, increased...
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Alfredo J. Escribano
Orffa Excentials
In ruminants concentrates, oils\fats inclusion is lower that in monogastrics' ones, where low durability and pasty textures can be found due to high inclusion of fats. In ruminants diets, where fats level of inclusion is lower, do you have any data\and or experience regarding the effect of calcium soaps of fatty acids (and\or hydrogenated fats) on pellet quality? ...
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In the 1990s, Diamond V scientists responded to a critical challenge: How could they isolate and study anaerobic fermentation and other complex microbiological processes that take place in the rumen of the dairy cow using a simple, sensitive, and repeatable bench-top procedure? In response, Dr. Ilkyu Yoon, Joan Butler, and scientists at the Diamond V Research and Innovation Center developed the Rumen Activity Modifier Model...
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