Dairy Herd Fertility - Examination of Effects of Increasing Genetic Merit and Other Herd Factors on Reproductive Performance - D-07-98
Duration Completed
Team and Leader CS Mayne
Organisations Involved Agricultural Research Institute of Northern Ireland, Veterinary Science Division and Biometrics Division, Department of Agriculture C S Mayne, M. McCoy, F J. Gordon, W J McCaughey and E Goodall
Background and Summary
Poor reproductive performance is a major problem on dairy farms across Northern Ireland, resulting in considerable financial loss. The objective of this proposal is to establish a research programme, which will:
(a) determine the nature and extent of the problem on Northern Ireland farms
(b) identify if this problem is increasing and if so via what route
(c) establish on-farm management routines which will improve reproductive rate.
Dairy Projects
Completed
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Developing Improved Heifer Rearing Systems - D-03-97
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A Comparison of Four Contrasting Milk Production Systems for Winter Calving High Genetic Merit Cows - D-05-98
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A comparison of three contrasting systems of milk production for Spring calving dairy cows - D-29-06
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Alternative forages for dairy cattle - D-20-04
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An Examination of the Potential Contribution of Cross Breeding to Improve the Profitability of Dairying in Northern Ireland - D-11-00
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Are International Dairy Sire Genetic Evaluations Relevant to Milk Production Systems in NI - D-06-98
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Comparison of the performance of two cow genotypes within a low input grazing system and a high input total confinement system (D-45-08)
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Control of botulism in Cattle - VSD-DB-34-06
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Dairy Herd Fertility - Examination of Effects of Increasing Genetic Merit and Other Herd Factors on Reproductive Performance - D-07-98
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Developing supplementation strategies for dairy cows - A new approach incorporating cow status and cow potential - D-17-03
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Development of Improved Methods for Rationing Dairy Cattle - D-02-97
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Development of methodology to enable prediction of actual manure N output from dairy cows in Nitrate Vulnerable Zones in Northern Ireland - D-27-05
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Economic Evaluation of Holstein Bull Beef Production - DB-24-04
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Effect of nutritional management during the first 42 days post calving on ‘lactational’ performance, uterine health, and subsequent reproductive performance post partum (D-50-10)
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Evaluation of the Effectiveness of a Range of Time-Temperature Pasteuriastion Combinations - DCNI-D-09-99
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Expanding Output Efficiency in Environmentally Friendly Systems - D-12-01
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Expanding output efficiently in Environmentally Friendly Systems (Extension) - D-19-04
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Footbath Design and Use - MDC-D-18-04
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Grass Check 3 - Monitoring of grass and clover growth and sward quality across NI - D-34-07
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Improving heifer rearing regimes on farms in Northern Ireland - D-30-06
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Improving the effeciency of grass utilisation and nutrient use from slurry under rotational grazing by dairy cows - D-35-07
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Improving the efficiency of grass and nutrient use from slurry under rotational grazing by dairy cows D-39-08
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Increasing dairy cow intakes by optimising feeding system design - D-33-06
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Low input forages for dairy cow production systems - D-21-04
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Managing first lactation heifers to maximise welfare and productivity - QUB-D-40-08
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Monitoring and prediction of grass growth in Northern Ireland- Grass Check 2 - D-22-04
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On-farm Monitoring of Grass Growth, Grass Quality and Herbage Intakes of Dairy Cows in Northern Ireland - D-08-98
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Optimum Northern Ireland Milk Production systems, with milk prices between 16 and 21 ppl - D-15-03
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Producing a Booklet on `Improving Milk Composition in the Dairy Herd' - D-01-97
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Production of a CD on 'Using research information to reduce the costs of producing milk, beef and sheep' - DBS-04-97
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Reducing organic nitrogen outputs from dairy cows and beef cattle in Nitrate Vulnerable Zones - DB-16-03
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Strategies for reducing lameness in Northern Ireland Dairy Herds - D-23-04
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The effect of increasing calf growth rate in the first 2 months of life on subsequent lifetime performance - DB-14-03
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The effect of protein levels in dairy cow diets on body reserves throughout lactation - D-31-06
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The Effect of the Type of Dietary Supplement on the Performance of the Grazing Dairy Cow - D-13-02
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To Assess the Potential of the Norwegian (NRF) Breed as a Means of Improving the Fertility and Health Status of the Northern Ireland Dairy Herd - D-10-00
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To Investigate if MAP can Survive the Spray Drying Process - DCNI-D-25-04
Ongoing
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Benchmarking the control of BVD in NI - VSD-D-41-08
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Development of sustainable milk production systems designed to reduce environmental impact and maximise animal welfare - D-37-07
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Effect of three different concentrate build up strategies in early lactation on production performance health and fertility of high-yielding dairy cows - D-54-11
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Effectiveness of different footbath solutions in the treatment of digital dermatitis in cows - D-35-06
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GrassCheck 4 (D-51-10)
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Improving nutrient management within intensive grassland based dairy systems D-43-08
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Improving the diagnostics of Bovine Johne's Disease at the herd and animal level - VSD-D-42-08
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Improving the efficiency of feed resource use within the diets of confined dairy cows through precision feeding and improved concentrate allocation strategies (D-56-11)
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Influence of breed, diet and body condition score on lameness in cattle - D-32-06
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Maximising Returns from Beef Progeny Sourced in the Dairy Herd - DB-26-05
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Measurement of grass growth and utilisation and herd performance to enable the development and implementation of decision support systems to optimise performance in different regions of Northern Ireland - D-28-06
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RCF 03/2010: Reducing Greenhouse Gas Emmissions from the Northern Ireland Dairy Sector
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Survey to determine prevalence of NI suckler and dairy herds with evidence of current or recent infection with BVD virus (RCF-01)
Agrisearch, 97 Moy Road, Dungannon, Co Tyrone, Northern Ireland, BT71 7DX.
Tel: 028 87 789770 Fax: 028 87 788200 email: info@agrisearch.org