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Utilisation of Grazed Grass in Temperate Animal Systems

  • Utilisation of Grazed Grass in Temperate Animal Systems

Utilisation of Grazed Grass in Temperate Animal Systems

J. Murphy

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£33.00
Author: J. Murphy

About The Book

Leading authorities from wide geographical regions of the globe will review the most up-to-date information in relation to temperate grasslands. Topics covered are: nutritive value of pasture; plant characteristics conducive to high animal intake and performance; modelling of both grass growth and animal production and intake in grazing systems; optimising financial returns from grazing; decision support systems; optimal animal breeds and traits for grazing systems; challenges and opportunities for animal production in the immediate future.

In addition, short papers will present the most recent research on the above mentioned topics. One paper will present a comprehensive overview of animal production from pasture in Ireland This book will be of interest to grassland and ruminant production scientists, mathematical modellers working on grazing systems, extension workers, students of agriculture and animal production and progressive livestock farmers.

Additional Information

Author J. Murphy
Availability In Print
Dimensions Unknown
Extent 272 pp
ISBN 9789076998763
Publication date 2005
Book Type Softcover

Contents

Foreword

Opening of conference address

Keynote presentations

  • Overview of animal production from pastures in Ireland
  • Plant and sward characteristics to achieve high intake in ruminants
  • New insights into the nutritional value of grass
  • Genetic characteristics required in dairy and beef cattle for temperate grazing systems
  • Grass growth modelling: to increase understanding and aid decision making on-farm
  • Modelling of herbage intake and milk production by grazing dairy cows
  • Decision support for temperate grasslands: challenges and pitfalls
  • Challenges and opportunities for animal production from temperate pastures
  • Optimising financial return from grazing in temperate pastures

Section 1: Appropriate plants for grazing

  • Intake characteristics of diploid and tetraploid perennial ryegrass varieties when grazed by Simmental x Holstein yearling heifers under rotational stocking management
  • The effect of early and delayed spring grazing on the milk production, grazing management and grass intake of dairy cows
  • Performance of meat goats grazing winter annual grasses in the Piedmont of the southeastern USA
  • The importance of patch size in estimating steady-state bite rate in grazing cattle
  • Spring calving suckler beef systems: influence of grassland management system on herbage availability, utilisation, quality and cow and calf performance to weaning
  • Production and plant density of Sulla grazed by sheep at three growth stages
  • Management of pasture quality for sheep on New Zealand hill country
  • Perennial ryegrass variety differences in nutritive value characteristics
  • A survey of European regional adaptation in Italian ryegrass varieties
  • Effect of perennial ryegrass cultivars on the fatty acid composition in milk of stall-fed cows
  • Survey of tetraploid and diploid perennial pastures in the Waikato for number of spores produced by the fungus Pithomyces chartarum
  • Diverse forage mixtures effect on herbage yield, sward composition, and dairy cattle performance
  • Potential yield of cocksfoot (Dactylis glomerata) monocultures in response to irrigation and nitrogen
  • Intake and milk production of lactating dairy cows grazing diverse forage mixtures over two grazing seasons
  • A comparison of perennial ryegrass cultivars differing in heading date and grass ploidy for grazing dairy cows at two different stocking rates
  • In situ rumen degradability of perennial ryegrass cultivars differing in ploidy and heading date in Ireland
  • Caucasian clover is more productive than white clover in temperate pastures
  • Grazing behaviour of beef steers grazing Kentucky 31 endophyte infected tall fescue, Q4508-AR542 novel endophyte tall fescue, and Lakota prairie grass
  • Yield components in a Signal grass-Clitoria mixture grazed at different herbage allowance
  • Response of warm-season grass pasture to grazing period and recovery period lengths
  • Renovation-year forage quality of grass pastures sod-drilled with Kura clover
  • Forage yield and quality of Signal grass-Clitoria mixture grazed at different frequencies

Section 2: Appropriate animals for grazing

  • Farm performance from Holstein-Friesian cows of three genetic strains on grazed pasture
  • Genetic alternatives for dairy producers who practise grazing
  • Suitability of small and large size dairy cows in a pasture-based production system
  • The effect of stocking rate and lamb grazing system on sward performance of Trifolium repens and Lotus corniculatus in Uruguay
  • Effect of stocking rate and grazing system on fine and superfine Merino wool production and quality on native swards of Uruguay
  • Cattle and sheep mixed grazing 1: species equivalence
  • Cattle and sheep mixed grazing: 2: competition
  • Effect of strain of Holstein-Friesian cow and feed system on reproductive performance in seasonal-calving milk production systems over four years
  • Pasture intake and milksolids production of different strains of Holstein-Friesian dairy cows
  • Does the feeding behaviour of dairy cows differ when fed ryegrass indoors vs. grazing?
  • Variation between individuals in voluntary intake and herbage intake of grazing dairy cows
  • Relationships between traits other than production and longevity in New Zealand dairy cows

Section 3: Developments in modelling of herbage production and intake by grazing ruminants

  • Modelling the effect of breakeven date in spring rotation planner on production and profit of a pasture-based dairy system
  • Development of a model simulating the impact of management strategies on production from beef cattle farming systems based on permanent pasture
  • Intake by lactating goats browsing on Mediterranean shrubland
  • The impact of concentrate price on the utilization of grazed and conserved grass
  • Adapting the CROPGRO model to predict growth and perennial nature of bahiagrass
  • Modelling urine nitrogen production and leaching losses for pasture-based dairying systems
  • A model to evaluate buying and selling policies for growing lambs on pasture
  • Sensitivity analysis of a growth simulation for finishing lambs
  • Modelling winter grass growth and senescence
  • The meal criterion estimated in grazing dairy cattle: evaluation of different methods
  • Effect of nitrogen on the radiation use efficiency for modelling grass growth
  • Radiation use efficiency of ryegrass: determination with non cumulative data
  • Modelling the digestibility decrease of three grass species during spring growth according to the age of the grass, the thermal age and the yield
  • Visual Modelling of Alfalfa Growth and Persistence under Grazing
  • A new agro-meteorological simulation model for predicting daily grass growth rates across Ireland

Section 4: Decision support systems for grazing

  • Pƒtur'IN: a user-friendly software tool to assist dairy cow grazing management
  • A farmer-based decision support system for managing pasture quality on hill country
  • Understanding Livestock Grazing Impacts: a decision support tool to develop goal-oriented grazing management strategies
  • Enhancing grasslands education with decision support tools
  • Simulation of pasture phase options for mixed livestock and cropping enterprises
  • A farmer friendly feed budget calculator for grazing management decisions in winter and spring
  • GrassCheck: monitoring and predicting grass production in Northern Ireland
  • Grass growth profiles in Brittany
  • Effect of strategy of forage supplementation and of turnout date in a medium stocking rate system on the main characteristics of dairy cows grazing
  • Using the GrassGro decision support tool to evaluate the response in grazing systems to pasture legume or a grass cultivar with improved nutritive value
  • Pasture land management system decision support software
  • Forecast of herbage production under continuous grazing
  • A decision support tool for seed mixture calculations

Section 5: Constraints and opportunities for animal production from temperate pastures

  • Environmental clustering of New Zealand dairy herds
  • Risk-efficiency assessment of haying
  • Irish dairy farming: effects of introducing a Maize component on grassland management over the next 50 years
  • Lucerne crown and taproot biomass affected early-spring canopy expansion
  • Autumn root reserves of lucerne affected shoot yields during the following spring
  • Milk production performance based on grazed grassland in Switzerland
  • Extending the grazing season with turnips
  • The effect of inclusion of a range of supplementary feeds on herbage intake, total dry matter intake and substitution rate in grazing dairy cows
  • White clover soil fatigue: an establishment problem on large and intensive dairy farms
  • Effect of farm grass cover at turnout on the grazing management of spring calving dairy cows
  • What supplementation type for spring calving dairy cows at grass in autumn?
  • Manipulation of grass growth through strategic distribution of nitrogen fertilisation
  • The effect of closing date and type of utilisation in autumn on grass yield in spring
  • A comparison of three systems of milk production with different land use strategies
  • Project Opti-Milk: optimisation and comparison of high yield and low input milk production strategies on pilot farms in the lowlands of Switzerland
  • Assessment of grass production and efficiency of utilisation on three Northern Ireland dairy farms
  • The effect of grassland management on bovine nitrogen efficiency
  • The effect of stocking rate and initial grass height on herbage production and utilization, and milk production per unit area under set stocking by lactating dairy cows

Section 6: Other aspects of grassland/grazing

  • Better dairy farm management increases the economic return from phosphorus
  • The effect of two magnesium fertilisers, kieserite and MgO, on herbage Mg content
  • Effect of different phosphorous sources and levels on the productive behaviour of a Lotus pedunculatus cv. Grasslands Maku oversown pasture
  • Field testing of a turnip growing protocol on New Zealand dairy farms
  • Labour input associated with grassland management on Irish dairy farms
  • Factors affecting Italian ryegrass (Lolium multiflorum L.) seed distribution
  • Practical application of a one-parameter approach to assess the accuracy of two different estimates of diet composition in sheep
  • Use of alkanes to estimate dry matter intake of beef steers grazing high quality pastures
  • Effects of rumen fill on intake and milk production in dairy cows fed perennial ryegrass
  • Both grass development stage and grazing management influence milk terpene content
  • Supplementation under intensive grazing, silage- or grain-based diets for beef production on steer performance and meat fatty acid composition

Section 7: Open debate - What should grassland/grazing research focus on now?

  • Research into the types of cows and systems required to utilise grazed pastures sustainably in 100 years from now
  • Farming for fun & profit
  • Grassland research: goals for the future
  • What research is required for economically and environmentally sustainable farming?

Keyword index

Author index

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