Download or read book Evaluation of the Nutritive Value of Four Tropical Grasses Receiving Two Levels of Nitrogen Fertilization written by Francisco Juarez and published by . This book was released on 1998 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation and Application of the Cornell Net Carbohydrate and Protein System CNCPS for Dairy Production in Honduras written by Alice Sawyer Green and published by . This book was released on 2002 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Evaluation of Models for the Cornell Net Carbohydrate and Protein Syetem written by Luis Orlindo Tedeschi and published by . This book was released on 2001 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of the Cornell Net Carbohydrate and Protein System on a Pasture based Dairy Farm written by Paul Edward Cerosaletti and published by . This book was released on 1998 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Dynamics and Productivity Potentials of Pasture based Cattle Systems in the Western Amazon of Brazil written by Bertha Rueda-Maldonado and published by . This book was released on 2002 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter I; introduction; Chapter II; Agrosilvopastoral practices for pasture-based cattle systems of the western brazilian amazon: essential information for determining the "best-bets"; Abstract; Introduction; Nutrient dynamics in agrosilvopasotral (ASP) systems; Components of agrosilvopastoral systems; Pasture-based cattle systems in tropical america; Pasture-based cattle systems in the westerns brazilian amazon; Recomemmendations; Appendix I; References; Chapter III; Soil, plant and cattle nutrient dynamics on pastures of the western amazon of Brazil; Abstract; Introduction; Materials and methods; Site description; Sampling of soils and forages; Laboratory analyses; Above ground nutrient stocks; Statistical analysis; Results and discussion; Soil chemical and physical properties; Biomass productivity and nutrient pool of pasture; Nutrient inventories of the pasture-livestock system; Conclusions; Implications; References; Chapter IV; Production and economic potentials of cattle in pasture-based systems of the western amazon of Brazil; Abstract; Introduction; Materials and methods; Site description; Forage sampling; Laboratory analysis of feeds; Carbohydarate fractions and digestion rates of feeds; Statistical analysis; Baseline prediction of animal requirements and forage values; Potential for increased productivity; Net economic returns from intensification options; Results and discussion; Pasture biomass accumulation and grazing behavior; Chemical composition, carbohydrate digestion rates and nutritional values of forages; Animal and pasture land productivity (baseline); Net economic returns from intensification options; Conclusions; Implications; Appendix I; References.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1998 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Models to Predict Ruminal Carbohydrate and Nitrogen Supply and Nitrogen Excretion in Cattle written by Cristina Lanzas and published by . This book was released on 2007 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: To mitigate the negative environmental impact of farming, it is important that diets are formulated to accurately match requirements. For that, an adequate characterization of feed composition and its variability is crucial. The original Cornell Net Carbohydrate and Protein (CNCPS) feed carbohydrate and protein fractionation schemes were evaluated and modified to improve predictions of the rumen degradable protein (RDP), rumen undegradable protein (RUP) and microbial protein supply. For carbohydrates, a new expanded scheme was developed; the CA1 is volatile fatty acids (VFA), CA2 is lactic acid, CA3 is other organic acids, CA4 is sugars, CB1 is starch, CB2 is soluble fiber, CB3 is available neutral detergent fiber (NDF), and CC is unavailable NDF. The expanded scheme accounted for more variation in changes in silage quality and non-fiber carbohydrate composition. The CNCPS and National Research Council (NRC) protein schemes were evaluated using Monte Carlo techniques. Both schemes shared similar limitations including (1) the range of RDP and RUP was over-predicted; (2) the methods used to estimate degradation rates had low accuracy and repeatability, and (3) the assumptions underlying the kinetic models were too restrictive to mimic ruminal digestion. The CNCPS protein scheme was revised and alternative schemes were developed. Predictions of RDP and RUP were improved by assigning rates obtained with the inhibitory in vitro system to a combined insoluble protein B fraction, or by redefining A and B1 fractions as the non amino-N and amino-N in the soluble fraction, respectively. Urea recycled to the rumen may represent an important source of N for microbes. A dynamic mechanistic model was developed to be used as a component of ration formulation models to predict N recycling to the GIT and urinary urea N. Recycling processes were modeled as positive feedbacks, while renal excretion was modeled as a negative feedback. Both processes were assumed to be regulated by N intake. Model simulations suggested that accurately accounting for urea recycled to the rumen reduces degradable nitrogen needed in the diet, and the use of the NRC 1985 empirical equation to predict urea recycling to the rumen may greatly underestimate recycling in lactating dairy cows. (Abstract).
Download or read book RNA Extraction and Estimation of Ruminal Cellulolytic Populations in the Presence of Condensed Tannins written by Pedro Braga Arcuri and published by . This book was released on 1999 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1994 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems written by Ladha and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table 1. Global allocation of arable land between different com modities Globally, cereal cropping dominates cultivated land Commodities' Proportion of land area use (around 50% of total area, Table 1). The remain (%) ing arable land is used for production of oilseed, fibre, or food and cash crops. In addition, vast areas are Cereals maintained under temporary or permanent pasture for Wheat 16 forage production (2-3 fold greater than the total area Rice 10 under cultivation and permanent crop; Table 1, Fig. Maize 9 1). All cultivated crops, except for legumes (pulses All other cereals 13 and legume oil seeds) require the soil to provide rel Total 48 atively large amounts of nitrogen (N). It is necessary for the three most important cereals, wheat (Triticum Legumes aestivum), rice (Oryza sativa) and maize (Zea mays), Legume pulses 5 to take up 20 to 40 kg soil N ha -lover a period of 3 Legume oilseeds 6 to 5 months to satisfy the N requirements of the seed and supporting vegetative structure for each tonne of Total II grain produced (e. g. Fig. 2; Myers, 1988). Produc tive pastures on the other hand may assimilate> 100 Other crops I kg N ha- each annum, of which 50 to 90% will be Other oilseeds 6 consumed by livestock in intensively grazed systems Beverages / Tobacco 7 (Ledgardy, 1991; Thomas, 1995).
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ruminant Nutrition written by Robert Jarrige and published by John Libbey Eurotext. This book was released on 1989 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with feed evaluation systems, the nutrient requirements of ruminant livestock and the feeding value of a wide range of feedstuffs. This book lists about 800 typical forages, 65 crop residues and 120 concentrate and by-product feeds. It is suitable for teachers, specialist scientists and industrialists.
Download or read book Proceedings of the Southern Pasture and Forage Crop Improvement Conference written by and published by . This book was released on 1984 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rangeland Systems written by David D. Briske and published by Springer. This book was released on 2017-04-12 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY-NC 2.5 license. This book provides an unprecedented synthesis of the current status of scientific and management knowledge regarding global rangelands and the major challenges that confront them. It has been organized around three major themes. The first summarizes the conceptual advances that have occurred in the rangeland profession. The second addresses the implications of these conceptual advances to management and policy. The third assesses several major challenges confronting global rangelands in the 21st century. This book will compliment applied range management textbooks by describing the conceptual foundation on which the rangeland profession is based. It has been written to be accessible to a broad audience, including ecosystem managers, educators, students and policy makers. The content is founded on the collective experience, knowledge and commitment of 80 authors who have worked in rangelands throughout the world. Their collective contributions indicate that a more comprehensive framework is necessary to address the complex challenges confronting global rangelands. Rangelands represent adaptive social-ecological systems, in which societal values, organizations and capacities are of equal importance to, and interact with, those of ecological processes. A more comprehensive framework for rangeland systems may enable management agencies, and educational, research and policy making organizations to more effectively assess complex problems and develop appropriate solutions.
Download or read book Tropical Agriculture written by and published by . This book was released on 1994 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tropical Grasslands written by and published by . This book was released on 1997 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agronomy Journal written by and published by . This book was released on 1949 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: An international journal of agriculture and natural resource sciences.
