Author: J. W. Czerkawski
Publisher: Elsevier
ISBN: 1483292983
Category : Medical
Languages : en
Pages : 247
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Book Description
The rumen is an object of study for many types of biological scientist, from anatomists to microbiologists, and more recently even mathematicians. The developments and use of various experimental techniques have enabled much progress to be made in rumen studies. Several chapters of this book concentrate on these techniques and concepts that stem from their application. Biochemical and microbial interrelationships are dealt with fully, with an emphasis on the integrated nature of the rumen's contents. The book concludes by considering the most fruitful approaches that might lead to a more complete understanding of this complex and efficient organ. Each chapter is a complete unit that can be read and understood without reference to other chapters. A general reading list at the end of each chapter, together with more detailed references, will help to launch the student into any specific area of rumen studies.
Author: R.L. Baldwin
Publisher: Springer Science & Business Media
ISBN: 9780412591600
Category : Medical
Languages : en
Pages : 600
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Book Description
Role of mminants in human food production; Whyan animal scientist would choose to model animal systems; Basic organization of this book; Modeling principIes and terminology; Classification of models; Objectives in modeling; The modeling process I objective statements, block diagrams, equation forms and parameterization; Steps in modeling; Setting the modeling objective; Block diagrams; Formulation of mathematical statements; Development of numerical inputs; The modeling process II - solution algorithms, model evaluations and parameter estimation; Model solution algorithms; Evaluation of management and research models; Evaluation and use of analytical models for parameter estimation; Decision support software; Animal energetic models; Thermodynamic concepts in nutrition; Historical development of bases for feeding system models; Energy requirements for maintenance and production; Equations used to estimate maintenance and costs of production; Components of maintenanace; Protein and amino acid models; Current protein and amino acid systems; Analytic models of amino aicd and protein metabolism; Dynamic modeling; Biology and algebraic models of ruminant digestion; The rumen microbes and their metabolism; Balance models of ruminant digestion; An analytical model of rumen digestion; Microbial growth elements; Biology and algebraic models of growth; Classical equations for growth; Nutritional models of growth; Concepts of lhe basic biology of growth used in mechanistic models; Biology of lactation; Decent evolution of feeding systems for lactating dairy cattle; An analytical model of nutrient transactions during lactation; Dynamic models of ruminant digestion; Early dynamic models; Current dynamic models; Dynamic models of ruminant adipose tissue metabolism; Evolution of steady-state balance model; Radioisotope tracer elemets; Dynamic models of ruminant mammary metabolism; Development of model inputs and initial parameters; Descriptions of a model of mammary gland metabolism; Dynamic models of liver and viscera metabolism; Overall structure and notation; Mechanistic, dynamic models of growth; Beef growth models; Sheep growth and metabolism model; Lactation Background on MOLL Y. CSL; The program MOLL Y. CSL; Evaluation and use of a growth and lactation model; Behavioral analyses; Sensitivity analyses; Bioeconomic analyse.
Author: BURK A. DEHORITY
Publisher:
ISBN: 9781789183054
Category :
Languages : en
Pages : 0
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Book Description
Author: J. P. Jouany
Publisher: Editions Quae
ISBN: 2738003451
Category : Science
Languages : en
Pages : 388
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Book Description
This book brings together the data of lastest international research and was conceived as the result of a summer school held at the INRA Centre of Clermont-Ferrand/Theix from 24 September to 4 Octobre 1990. The subject is the rumen as a fermentor and the means by which rumen functioning can be optimized for the maximum benefit ot the ruminant.
Author: Dr Chris McSweeney
Publisher: Burleigh Dodds Science Publishing
ISBN: 1786763346
Category : Technology & Engineering
Languages : en
Pages : 603
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Book Description
Reviews advances in understanding the role of different types of rumen microbiota such as archea, anaerobic fungi, viruses and the rumen wall microbial community Covers both the way the rumen processes fibre and protein and factors affecting outputs such as energy (affecting animal health), lipids (affecting meat and milk quality) and methane emissions (affecting environmental impact) Comprehensive review of the range of nutritional strategies to optimise rumen function such as the role of pasture, silage, cereal feed, plant secondary compounds and probiotics.
Author: Y. Ruckebusch
Publisher: Springer Science & Business Media
ISBN: 9401180679
Category : Medical
Languages : en
Pages : 856
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Book Description
Two questions could not be avoided in the avant-propos of this book; (i) what is the importance to man of ruminant livestock, and (ii) what results of practical relevance in the growing mountain of scientific verbiage could be found in the Proceedings of this Symposium. Herbivores are an integral and critical part of the natural ecosystem which must be preserved because of their impact on human welfare. Wh at makes ruminants especially important to man is that they can thrive on fibrous forage and are thus the only viable enterprise over much of the earth's surface where crop growing is impracti cable. They contribute a wide array of products in addition to 50000 000 tonnes ofmeat (1977) and represent a 'capital reserve' that can be drawn upon in times of emergency: milk for example (450000000 tonnes) can make the difference between subsistence and starvation. About 60% of the world's meat and 80 % of the milk are produced by one third of the world ruminant population in the developed regions and as much as 99 % of the power for agriculture is provided by the ruminant population in developing countries. For the next two decades, a probable increase by 30 % for . cattle and buffalo and more than 40 % for sheep and goats is expected by improving health, fertility, nutrition and genetic potential rather than feed resources.
Author: M.A.K. Khalil
Publisher: Springer Science & Business Media
ISBN: 364284605X
Category : Science
Languages : en
Pages : 570
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Book Description
Methane plays many important roles in the earth's environment. It is a potent "greenhouse gas" that warms the earth; controls the oxidizing capacity of the atmosphere (OH) indirectly affecting the cycles and abundances of many atmospheric trace gases; provides water vapor to the stratosphere; scavenges chlorine atoms from the stratosphere, terminating the catalytic ozone destruction by chlorine atoms, including the chlorine released from the man-made chlorofluorocarbons; produces ozone, CO, and CO2 in the troposphere; and it is an index of life on earth and so is present in greater quantities during warm interglacial epochs and dwindles to low levels during the cold of ice ages. By all measures, methane is the second only to CO2 in causing future global warming. The book presents a comprehensive account of the current understanding of atmospheric methane, and it is an end point for summarizing more than a decade of intensive research on the global sources, sinks, concentrations, and environmental role of methane.
Author: Alejandro Belanche
Publisher: Frontiers Media SA
ISBN: 288966483X
Category : Science
Languages : en
Pages : 437
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Book Description
Author: Christon J. Hurst
Publisher: John Wiley & Sons
ISBN: 1119849993
Category : Science
Languages : en
Pages : 456
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Book Description
MICROBIAL FERMENTATIONS IN NATURE AND AS DESIGNED PROCESSES Fermentation is one of the most important metabolic tools that biology has developed and microorganisms in many ways seem to have become the true masters of fermentative metabolism. Each of the fermentative microbial functions evolved to fit an energetic opportunity, and each function has ecological value. This book provides its readers with: Understanding regarding the commonalities and distinctions between aerobic and anaerobic fermentations as performed by microorganisms. A summary of knowledge regarding the ways in which animals and plants depend upon symbiotic interactions with their fermenting microbial partners including the deconstruction of complex polysaccharides. Information is also included about how those natural technologies constitute adaptation into designed processes for anaerobic degradation of lignocellulosic materials. The important role of rhizosphere microbes that facilitate availability of inorganic and organic phosphates for plants. These phosphates get stored in the plant’s seeds. After ruminant animals ingest the seeds, enzymes produced by gastrointestinal microbial fermentation allow the animals to utilize their dietary phosphates. History of how microbial fermentation has been harnessed from prehistoric times to the present for processing and preserving food products for humans and fodder for our domesticated animals. Insight into the ways that microbial fermentations are used as an engineering tool for producing chemicals, including enzymes and pharmaceuticals, which improve the health of ourselves and our domesticated animals. Perspectives on possible future research directions for the field of applied microbial fermentation that will help to advance agriculture and industry.
Author: Mohammad Aslam Khan Khalil
Publisher: Springer Science & Business Media
ISBN: 3662041456
Category : Science
Languages : en
Pages : 370
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Book Description
Methane is an important greenhouse gas that can cause global warming. The present concentrations of methane are nearly three times higher than several hundred years ago. Today, more than 60% of the atmospheric methane comes from human activities, including rice agriculture, coal mining, natural gas usage, biomass burning, and raising of cattle. Methane affects the stratospheric ozone layer and the oxidizing capacity of the atmosphere, which in turn control the concentrations of many man-made and natural gases in the atmosphere. This book brings together our knowledge of the trends and the causes behind the increased levels of methane. Based on the scientific information on the sources and sinks, and the role of methane in global warming, strategies to limit emissions can be designed as part of a program to control future global warming.
