effeithlonrwydd mewn amgylchedd sy’n newid · 8 increase lamb growth rates for earlier finishing...
TRANSCRIPT
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Effeithlonrwydd mewn amgylchedd sy’n newid Efficiency in a changing environment
Prysor Williams
Prifysgol Bangor University
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Background
• Good news & bad news…
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Increasing demand for your produce
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4
Provenance and assurance
• Food assurance schemes for many act as a consumer comfort
blanket – around confidence & trust
• Provenance on its own doesn’t necessarily drive sales – value
and good quality are key considerations
Price
65%
Overall appearance
61% Family prefer it
59%
Texture of meat
58%
Required for a recipe
56%
Animals well looked
after
54%
Colour of meat
54%
Most important factors when choosing meat
Base: All respondents in Meat 2 section (1055) EQ13: Please select how important the following factors are when deciding on what meat to purchase?
COO/ Origin
40% Assurance Marks
32%
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The “B word”
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“New” pressures
• Livestock agriculture often reported as a significant source of environmental impact
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Environmental concerns about meat
• Livestock agriculture often reported as a significant source of environmental impact
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Some Google searches…
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10
The rise of Meat Free
5% P o p u l a t i o n
s a y t h e y a r e
v e g e t a r i a n
64% 35% o f e v e n i n g
m e a l s a r e
M e a t F r e e
G B H H s a r e
b u y i n g M e a t
F r e e e a c h y e a r
Cutting down on Meat
becoming a more
important part of meals
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11
The rise of Meat Free …and flexitarians
0
2
4
6
8
10
12
14
16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Average Weekly Frequency of Meat Consumption
5.4
% O
F M
EA
T E
AT
ER
S
‘FLEXITARIAN’
TARGET GROUP
TOTAL FLEXITARIAN
CONSUMERS
MODERATE ADVANCED
LIGHT AVERAGE HEAVY MEAT LOVER!
41% of Meat Eaters
are ‘Flexitarians’
Growing over
5x faster than the
GB population!
Kantar Worldpanel Usage // Total in Home and Carried out Consumption // 52 we/ 31st of January 2016
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So what’s the beef with meat and the environment?
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Where do we go from here?
• UK Climate Change Act target to cut GHG emissions 80% by 2050
– All sectors will be under the spotlight
– Each has to play its part
• In short: agriculture will need to stand up to the challenge
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The roadmap
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Turning a negative into a positive
• Our competitors have latched onto this
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Upping our game
• We can’t pretend that there is no room for improvement
• Need to be more efficient across all areas
– Inputs vs. outputs
• But how do we get there?
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Research and agriculture: where we’re at
• Any progressive industry invests in research
• Agriculture should be no different
– Farmers need to engage with researchers and vice versa
– “bottom-up” and “top-down”
• HCC have sponsored a number of relevant projects at Bangor University
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1. Starting point: carbon footprints
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Carbon footprint method
• Face to face questionnaires on 60 sheep farms:
– Inputs: feeds, fertilisers, pesticides, bedding, fuel
– Stock numbers and movements throughout the year
– Outputs: produce
• Emissions calculations:
– Intergovernmental Panel on Climate Change equations
– Emission factors from standard databases
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Results
• Means (kg CO2equivalents/kg lamb):
• Carbon footprints ranged from:
– 5.4 to 21.5 kg CO2e/kg lamb – lowland farms
– 8.3 to 18.3 kg CO2e/kg lamb – upland farms
– 8.8 to 33.3 kg CO2e/kg – hill farms
– Other studies have found C-footprints to range by a factor of 15 times
Emission source Lowland Upland Hill
Inputs (direct and indirect emissions) 2.18 2.70 2.98
Enteric CH4 4.62 5.59 8.61
Excreta CH4 0.11 0.13 0.20
N2O from soils (direct and indirect emissions) 3.79 4.21 5.91
N2O from manure storage (direct and indirect emissions) 0.14 0.23 0.16
10.85 12.85 17.86
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Impact of management
Regression analysis showed that: 1) Concentrate use (kg/LSU) 2) Number of lambs reared per ewe
(head/ewe) 3) Lamb growth rate (g/day) 4) Percentage of ewe and replacement
ewe flock not mated (%)
Dominance analysis results:
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Implications for farmers
• Importance of productivity and efficiency
– Maximising output per unit input
• Number of lambs reared per ewe
– Breeding for ewe productivity
– Lamb survival
– Nutritional management
• Closing the productivity gap
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2. Doing something about it
• Options need to be
–Practical
–Cost-effective
–Effective
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2. Doing something about it
Number Mitigation Measure
1 Use a fertiliser recommendation system
2 Improve timing of fertiliser applications
3 Improve precision of fertiliser applications in soil
4 Avoid feeding excess nitrogen to minimise nitrogen losses in excreta
5 Analyse manure prior to application
6 Calibrate & maintain spreader equipment
7 Include legumes in pasture reseed mix e.g. clover
8 Increase lamb growth rates for earlier finishing
9 Feed a diet balanced in energy & protein
10 Increase the number of lambs born per ewe
11 Increase pasture productivity to enhance carbon storage
12 Performance recording & selective breeding for improved feed conversion efficiency
13 Increase ewe longevity
14 Improve ewe nutrition in late gestation to increase lamb survival
15 Increase diet digestibility
16 Reduce mineral fertiliser use
17 Split fertiliser applications
18 Improve drainage (non-organic soils only)
19 Lamb as yearlings
20 Performance recording & selective breeding for reduced enteric CH4/kg dry matter intake
21 Improve hygiene & supervision at lambing
22 Avoid conversion of peatlands
23 Select pasture plants bred for improved nitrogen conversion efficiency
24 Avoid fertiliser applications prior to pasture renovation
25 Avoid conversion of woodlands to pasture / crops
26 Select pasture plants bred to minimise dietary nitrogen losses e.g. high sugar grasses
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Best-Worst Scaling method
Best-Worst Scaling surveys to identify practical and effective mitigation measures
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Expert and farmer opinion results
Low effectiveness & high practicality
High effectiveness & high practicality
High effectiveness & low practicality
Low effectiveness & low practicality
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Expert and farmer opinion results
Include legumes in pasture reseed mix
Selective breeding to increase number of lambs born per ewe
Improve hygiene & supervision at lambing
These were then costed and their effectiveness modelled
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Clover: A practical measure
• Determine N2O emissions from Ryegrass-Clover systems vs. Ryegrass-fertiliser
– High/low N input
– Dry matter yield
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Clover: A practical measure
• Determine N2O emissions from Ryegrass-Clover systems vs. Ryegrass-fertiliser
– High/low N input
– Dry matter yield
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Results
Mean cumulative emissions per treatment Mean N2O emissions per harvested DMY (t)
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Monitoring soil N levels
• Development of electrodes and probes
• Field-testing
• Generate fertiliser recommendations from real-time data
– Targeted applications
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Other activities
• “Sustainable intensification”
• Shorthand definition: 'producing more food with less negative impact‘
• Involves many disciplines and topics
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SIP Study Farm and Area Locations
Nafferton
Allerton & Upper Welland
Morley & Wensum /Yare
Eden
Henfaes & Conwy
North Wyke & Taw
Future Farm Avon
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Henfaes: the Uplands Sustainable Intensification Platform
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• Aim: to increase grassland productivity through optimised soil, nutrient and grazing management
• How to better utilise grass as the base of lamb production systems
Henfaes: SI strategy
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• Upland ‘ffridd’
– ± lime/fert, ± re-seed, ± rotational grazing
Henfaes: approach
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• Upland ‘ffridd’
– ± lime/fert, ± re-seed, ± rotational grazing
Henfaes: approach
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• Lowland fields
– ± lime/fert, ± re-seed, ± rotational grazing
Henfaes: approach
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• Lowland fields
– ± lime/fert, ± re-seed, ± rotational grazing
Henfaes: approach
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• Drilling (with HSG, clover + timothy)
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• Introduced sheep + lambs
– Condition-scored and weighed
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• Grassland quality and quantity
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• Stock carrying capacity and performance
– Expressed in two ways
• kg /ha over time
• DLWG (kg /lamb and kg /ha)
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• Greenhouse gas emissions
– Ffridd
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• Greenhouse gas emissions
– Lowland
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• Grass utilisation is critical
• Other factors that affect growth rates and performance
SIP: summary
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So, where are we…?
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Implications in a changing environment
• Brexit will probably change much, but the core principles remain
– Efficiency is key
– People want value and quality
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Implications in a changing environment
• Brexit will probably change much, but the core principles remain
–People want value and quality
–Competition not disappearing
–Pressure on the livestock sector
• Increasing demand for ‘sustainably produced’ meat
• Costs and scale
• Efficiency is key: good business and environmental sense
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Efficiency in a changing environment
• Measures that can reduce environmental impact without compromising production, e.g.
– Clover
– N-sensors
– Sustainable intensification
• Doing the basics right
• Industry is engaged and pro-active – asking the questions
• Getting message across
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Implications in a changing environment
• All industries need to invest in R & D
• Genetics, technology, soils, animal health, environment, etc. etc.
• Profitable, efficient, modern industry
– Huge potential
• Often win-win scenarios
• Welsh livestock sector has much to offer
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Diolch yn fawr / Many thanks