Download or read book Evaluating the Role of Scale in the Sustainability of Nutrient Management of Pasture Based Dairy Systems written by Philip M. Murphy and published by . This book was released on 2020 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improving Herd Nutrient Management on Dairy Farms written by Thomas Paul Tylutki and published by . This book was released on 2002 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating the Impacts of Climate Change and Variability on Grazing Dairy Production written by Maria Melissa Rojas-Downing and published by . This book was released on 2017 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economic and Environmental Impacts of Nutrient Loss Reductions on Dairy and Dairy poultry Farms written by James Pease and published by . This book was released on 1998 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Nutrient Management Planning written by William P. Jordan and published by . This book was released on 2002 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NorFor written by Harald Volden and published by Springer Science & Business Media. This book was released on 2011-10-05 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: NorFor is a semi-mechanistic feed evaluation system for cattle, which is used by advisors in Denmark, Iceland, Norway and Sweden. This book describes in detail the system and it covers five main sections. The first is concerned with information on feed characteristics, feed analysis and feed digestion methods. The second section describes the digestion and metabolism in the gastrointestinal tract and the supply and requirement of energy and metabolizable amino acids. The third section considers the prediction of feed intake and physical structure of the diet. The fourth section focuses on model evaluation and the final section provides information on the IT solutions and feed ration formulation by a non-linear economical optimization procedure. This book will be of significant interest to researchers, students and advisors of cattle nutrition and feed evaluation.
Download or read book Essays on Nutrient Management Risk in Livestock Production written by Joleen Christine Hadrich and published by . This book was released on 2009 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Consequential Life Cycle Assessment of Pasture Based Milk Production written by Jeerasak Chobtang and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Farm intensification options in pasture-based dairy systems are generally associated with increased stocking rates coupled with the increased use of off-farm inputs to support the additional feed demand of animals. However, as well as increasing milk production per hectare, intensification can also exacerbate adverse impacts on the environment. The objective of the present study was to investigate environmental trade-offs associated with potential intensification methods for pasture-based dairy farming systems in the Waikato region, New Zealand. The intensification scenarios selected were (1) increased pasture utilization efficiency (PUE scenario), (2) increased use of nitrogen (N) fertilizer to boost on-farm pasture production (N fertilizer scenario), and (3) increased use of brought-in feed as maize silage (MS) (MS scenario). Twelve impact categories were assessed. The PUE scenario was the environmentally preferred intensification method, and the preferred choice between the N fertilizer and MS scenarios depended upon trade-offs between different environmental impacts. Sensitivity analysis was carried out to test the effects of choice associated with: (1) the approaches used to account for indirect land-use change (ILUC) and (2) the competing product systems (conventional beef systems) used to handle the co-product dairy meat for the climate change (CC) indicator. Results showed that the magnitude of the CC indicator results was influenced by the ILUC accounting approaches and the choice associated with a global marginal beef mix, but the relative CC indicator results for the three intensification scenarios remained unchanged.
Download or read book To Investigate the Effects of Pasture Based Systems on the Reproductive Performance Metabolic and Trace Mineral Status and Immune Function of Lactating Dairy Cows written by Hazel Mary Watson and published by . This book was released on 2013 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Management Challenges in Livestock Operations written by and published by . This book was released on 2001 with total page 158 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 Balances of Dairy Farms in New York State written by Shana Beth Bloomfield and published by . This book was released on 1998 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Factors to Consider when Expanding Dairies written by Peter Wright and published by Natural Resource Agriculture and Engineering Service (Nraes). This book was released on 1999 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimizing Productivity from Pasture based Systems written by Michael Dineen and published by . This book was released on 2020 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pasture-based diets can comprise completely of human inedible ingredients, support a resilient business model for the producer, and an animal welfare friendly image. However, increasing environmental challenges will require pasture-based systems to adapt and innovate. To ascertain optimal nutritional strategies to increase the nutrient use efficiency, productivity, and sustainability of these systems, a robust understanding of the nutrient supply from pasture is required. Therefore, the objectives of this research were: 1) to characterize the nutritive value of pasture using new and updated feed chemistry methods, 2) provide a more robust understanding of nutrient supply and microbial dynamics in lactating dairy cows fed pasture-based diets, 3) incorporate new understanding of protozoal dynamics into the microbial sub-model of the Cornell Net Carbohydrate and Protein System (CNCPS) v7.0, and 4) investigate nutritional strategies to optimize productivity from pasture-based systems. Results from laboratory analysis demonstrated that the neutral detergent fiber fraction of immature pasture comprises of a large potentially digestible pool that degrades rapidly. In addition, a large proportion of pasture N was estimated to be soluble and highly degradable in the rumen. An in vivo study was performed to determine the effects of rolled barley supplementation on cows fed pasture-based diets, which incorporated the omasal sampling technique, rumen evacuation, microbial isolation, and amino acid (AA) analysis. Cows supplemented with rolled barley did not increase overall performance and reduced ruminal and total-tract neutral detergent fiber digestibility; however, this was not mediated through a reduction in reticulorumen pH. Rolled barley supplementation increased microbial AA flow, which was likely due to the greater amount of fermentable carbohydrate digested in the rumen and a greater efficiency of microbial protein synthesis. Extensive rumen degradation of pasture AA, for both diets, indicated that cows consuming pasture-based diets exhibit a large dependence on microbial AA to support metabolizable AA supply. Protozoa N flow was not affected by diet; however, protozoa supplied a much larger amount of microbial N and exhibited shorter generation time than previously assumed, indicating that protozoa have the capability to grow and leave the rumen at high rates. Reparameterization of the coefficients of the protozoal sub-model in the CNCPS v7.0 considerable improved the ability of the model to predict AA flow, when compared with a literature data set. However, discrepancies between the predicted and observed Met and Lys flows indicated that further refinement is required while all other AA are predicted with fairly high accuracy. Finally, when investigating nutritional strategies to optimize productivity from pasture-based diets, results demonstrated that increased metabolizable protein supply allowed higher milk yield to be achieved, as metabolizable protein was more limiting than metabolizable energy. However, the high soil moisture deficit experienced during the study altered the chemical composition of the pasture, reducing the ability to extrapolate the results to cows consuming typical pasture-based diets. Overall, this research provides an enhanced understanding of the nutrient supply from pasture-based diets and highlights opportunities to increase the productivity and efficiency of pasture-based systems. Future studies incorporating the quantitative techniques described in this research are required to provide further insight into the nutrient supply of pasture-fed cows.
Download or read book The Dairy Nutrient Management System written by George Michael Henry and published by . This book was released on 1994 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dairy Nutrient Management in Whatcom County written by Briana Diskin and published by . This book was released on 2000 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental and Economic Impact of Nutrient Management on the New York Dairy Farm written by D.R. Coote and published by . This book was released on 1975 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
