Rumen Protected Lysine In Dairy Cows Bioavailability And Effects
Download Rumen Protected Lysine In Dairy Cows Bioavailability And Effects full books in PDF, epub, and Kindle. Read online free Rumen Protected Lysine In Dairy Cows Bioavailability And Effects ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
| Author | : |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
The first trial's objective was assessing bioavailability of an experimental formulation (EEL) for a commercial rumen protected (RP) Lys product (ASL). Abomasal infusion was used to develop a response curve relating bioavailability to plasma Lys concentration. Infusion linearly increased plasma Lys, but did not affect milk production or composition. Feeding ASL or EEL had no consistent effects and EEL bioavailability was not better than ASL. The second experiment was an iteration, with improvements learned from the first trial, aimed at determining ASL bioavailability. Plasma Lys increased with infusion in 7 out of 10 cows. Half of the cows responded to feeding ASL with increased plasma Lys. No effects of treatments, neither in milk yield nor composition, were observed. Estimated bioavailability was 28% by dose-response method and 22% by slope-ratio approach. The third trial tested production effects and N use efficiency of supplementing a low (14.5%) CP diet, containing soybean meal (SBM) and distillers grains (DDGS), with RP Met (RPM) and RP Lys (RPL); a positive control (16.8% CP) was included. High CP diet showed higher intake, milk yield and MUN, but lowest apparent N efficiency. No RPM main effects were observed; however, RPM*RPL interaction for milk yield was significant because RPM increased 1.2 kg milk/d but milk was not altered by RPM+RPL. Feeding RPM, but not RPL, increased milk yield/DMI on low CP diets containing SBM plus DDGS. The fourth trial aimed to determine if RPL supplementation improved nutritive value of RUP from corn protein. Diets contained alfalfa and corn silage; half or all CP from solvent SBM (SSBM) and expeller SBM (ESBM) were replaced by CP from corn (corn gluten meal and DDGS), while keeping RDP, RUP and metabolizable protein approximately constant. One all corn CP diet was RPL supplemented (20 g/d absorbed Lys). Intake was highest on SSBM+ESBM diet, intermediate on blended diet and lowest on the corn diets. Milk, milk protein yield, and feed efficiency were lowest in all corn CP diet without RPL; RPL supplementation increased 1.1 kg milk/d and 50 g protein/d. Dilution of SBM RUP with corn protein did not reduce milk yield.
| Author | : Peter R. Shewry |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 892 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 9401144311 |
Seeds provide more than half of the world's intake of dietary protein and energy and thus are of immense economic, cultural and nutritional importance. Proteins can account for up to 40% of the dry weight of various types of seeds, thereby making a large contribution to the nutritional quality and processing properties of seeds. It is, therefore, not surprising that seed proteins were among the first plant components to be systematically studied, some 250 years ago, and have been a major focus of research over the past 100 years. The properties and behaviour of seed proteins pervade modem life in numerous ways. For example, legume and cereal proteins are used'in the production of a wide range of meat-free foods; the process of bread-making is dep~ndent on the physical chemical properties of wheat seed proteins; and in developed, as well as developing, countries, nutritional deficiencies among vegetarian diets are avoided through balancing legume and cereal seeds as sources of dietary proteins. Understanding seed proteins, in order to improve their composition and properties and to increase their concentrations, will thus continue to be an important research objective for the future. The present volume represents the culmination of a long-discussed plan of the editors, to bring together the best international authorities in order to compile a definitive monograph on biological, biochemical, molecular and genetic aspects of seed proteins.
| Author | : Merrick Smith |
| Publisher | : |
| Total Pages | : 95 |
| Release | : 2021 |
| Genre | : |
| ISBN | : |
Two experiments were conducted to evaluate the performance of KESSENT M (RPM-K; Kemin Industries, Des Moines, IA, USA) to commercially available products by examining plasma methionine response and effect on animal performance in Holstein dairy cows.
| Author | : R. John Wallace |
| Publisher | : John Wiley & Sons |
| Total Pages | : 368 |
| Release | : 2008-07-11 |
| Genre | : Science |
| ISBN | : 3527615342 |
With the dramatically rising sophistication of biological methods and products and the increasing use of recombinant DNA technology, now is an apt time to review the status of biotechnology in animal feeding. This book gives succinct yet comprehensive coverage of products of biotechnology and allied sciences used in animal feed and feeding industries. Particular emphasis is placed on: - Conservation and upgrading of feeds and feed components - Increasing the protein value of feeds - Antimicrobials - Microbial feed additives - Increasing the energy value of feeds. Moreover, increasing environmental concerns are reflected in chapters describing dietary products which may help to reduce environmental hazards from animal feeding enterprises. A discussion of social and legislative aspects relating to biotechnology and animal feeding rounds off this useful compilation of timely articles.
| Author | : Jo May Chow |
| Publisher | : |
| Total Pages | : 146 |
| Release | : 1989 |
| Genre | : |
| ISBN | : |
| Author | : Richardt Venter |
| Publisher | : |
| Total Pages | : |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
Thirty high-producing multiparous Holstein cows were used in a completely randomized block design to compare a lysine deficient total mixed ration, which was sufficient in methionine, to the same diet supplemented with a rumen protected lysine product. The CPM-Dairy prediction model was used to estimate the nutrient requirements and adequacy or deficiency of amino acids. During the 21-day prepartum transition period, cows were fed 4 kg (dry basis) of the lysine deficient diet plus Eragrostis curvula hay ad lib. After calving, cows were fed the lysine deficient diet for the first three weeks and were then blocked according to the average production from day 19-21. Fifteen cows were allocated to each treatment and blocked into 15 groups of two each. Data on production parameters were analyzed for all cows and also separately for cows in the 10 highest production blocks. The experimental period was from day 22 to 120 postpartum. Lysine supplementation resulted in an optimal dietary lysine : methionine ratio in metabolisable protein of 7.2 : 2.4. Lysine supplementation did not affect dry matter intake, milk production, milk fat percentage, milk protein percentage, milk urea nitrogen, body weight or body condition score: but decreased the non-casein nitrogen and whey content of milk. Furthermore, milk casein, which is the milk nitrogen fraction most sensitive towards increased duodenal supply of lysine and methionine, was not affected. The rumen protected lysine product evaluated did not improve cow productivity, probably because the product was either unprotected from rumen degradation, or overprotected to the extent that the lysine was not available for absorption in the small intestine: or absorbed but could not be metabolised. Copyright.
| Author | : National Research Council |
| Publisher | : National Academies Press |
| Total Pages | : 406 |
| Release | : 2001-02-09 |
| Genre | : Technology & Engineering |
| ISBN | : 0309069971 |
This widely used reference has been updated and revamped to reflect the changing face of the dairy industry. New features allow users to pinpoint nutrient requirements more accurately for individual animals. The committee also provides guidance on how nutrient analysis of feed ingredients, insights into nutrient utilization by the animal, and formulation of diets to reduce environmental impacts can be applied to productive management decisions. The book includes a user-friendly computer program on a compact disk, accompanied by extensive context-sensitive "Help" options, to simulate the dynamic state of animals. The committee addresses important issues unique to dairy science-the dry or transition cow, udder edema, milk fever, low-fat milk, calf dehydration, and more. The also volume covers dry matter intake, including how to predict feed intake. It addresses the management of lactating dairy cows, utilization of fat in calf and lactation diets, and calf and heifer replacement nutrition. In addition, the many useful tables include updated nutrient composition for commonly used feedstuffs.
| Author | : Michael H. Briggs |
| Publisher | : Pergamon |
| Total Pages | : 492 |
| Release | : 1967 |
| Genre | : Science |
| ISBN | : |
| Author | : Bernard Guillaume |
| Publisher | : |
| Total Pages | : 306 |
| Release | : 1989 |
| Genre | : |
| ISBN | : |
| Author | : Harald Volden |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 172 |
| Release | : 2011-10-05 |
| Genre | : Science |
| ISBN | : 9086867189 |
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.
