sustainable poultry nutrition: challenges and opportunities: ravi ravindran
TRANSCRIPT
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Sustainable Poultry Nutrition: Challenges and Opportunities
V. RavindranMassey University, Palmerston North
NEW ZEALAND
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Agenda
• Why sustainability is becoming important?• Future growth in population and food demand
• Role of nutrition in sustainable animal production
• to improve the efficiency of nutrient use
• Focus on raw materials and feed additives • to improve digestion and reduce excretion
• Some take-home messages
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It was the best of times,It was the worst of times ….
A Tale of Two Cities, Charles Dickens (1859)
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0
20
40
60
80
100
120
1960 1970 1980 1990 2000 2010
Mill
ion
Tons
Source: FAO
World Animal Protein Production, 1961-2007
Pork
PoultryBeef
Farmed Fish
Sheep and Goats
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THE FUTURE Challenges = Opportunities
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Why sustainability is a critical issue?
• Increasing demand for animal products, despite limited global resources
• The need to sustain the natural resource base
• Public demands sustainability• Also attractive to the industry
• Nutrition and sustainability• Improved efficiency of nutrient use• Lower nutrient excretion
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Sustainable animal
nutrition
Environment(incl. climate)
Food safety
Welfare
Food vs. Fuel vs. Feed
Natural feeding
(e.g. Antibiotic-free)
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;p
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Raw materialsA decade of volatility
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Sustainable strategies # 1
New and non-traditional raw materials
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• New raw materials– Dried Distillers Grain Solubles (DDGS)– Algae, insects, single cell protein
• Increasing the use of non-traditional materials Example: sorghum, rice bran, palm kernel meal– By using feed enzymes, crystalline amino acids– Efficient feed formulation on digestible amino acid
basis
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• New raw materials– Dried Distillers Grain Solubles (DDGS)– Algae, insects, single cell protein
• Increasing the use of non-traditional materials Examples: sorghum, rice bran, cassava, palm kernel meal
– By using feed enzymes, crystalline amino acids– Efficient feed formulation on digestible amino acid
basis
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Sustainable strategies # 2
Reduce nutrient excretion – by improving utilization
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Efficiency of nutrient utilization - Broilers
• Dry matter – 70%• Gross energy – 75%• Nitrogen – 55%• Phosphorus – 45%
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If we can improve the nutrient retention
– Less manure output– Less nutrients in manure– Improved feed conversion
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Improving Nutrient Utilisation
Feed additives
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Additives of interest
In-feed antibiotic replacers
Crystalline amino acids
Feed enzymes
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Feed enzymes
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Feed enzymes and sustainability
Through enhanced nutrient digestion
Reduced variability between batches
Remove inclusion
constraints of some
ingredients
Increase the range of
ingredients Improved gut morphology and gut flora
profile
Improved GUT
HEALTH
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Feed enzymes and sustainability
Through enhanced nutrient digestion
ENVIRONMENT Reduced manure
and nutrient output
WELFARELower incidence
of wet litter (NSP enzymes)
Better uniformity of animals at market time
Immune responses?
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Major feed enzyme groups
Microbial phytases
Enzymes for viscous cereals
Enzymes for non-viscous
cerealsEnzymes for non-cereals
Enzymes for corn-soy diets
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The original phytase - Natuphos®
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↓ Less phosphorus, amino acids and minerals in feed formulations↑ Nutrient utilization↓up to 60% reduction in the excretion of phosphorus and other minerals↓Dependency of inorganic phosphates
Phytase use will increase in the future
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Inorganic Phosphate Supply
Declining and Non-renewable
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Cheap inorganic phosphates – a thing of the past
Microbial phytase will have a key role in minimising the vulnerability of agriculture to global P shortage
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Crystalline amino acids
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– Better use of feed resources– To avoid over-formulation and precisely meet
amino acid requirements
– To improve protein retained by the animal
– To lower dietary protein levels
– ↓ ammonia emission– ↓ nitrogen in the manure
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Antibiotic-free nutrition
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• Competitive exclusion• Probiotics• Prebiotics
• Acidifiers• Essential oils• Plant extracts• Feed enzymes
Numerous studies and exhaustive reviews None are currently standard inclusion in poultry diets, except
feed enzymes ‘
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– To be accepted, they must consistently improve animal performance
– None, on their own, are capable of fully replacing antibiotics
– Also more costly than conventional antibiotic programs
– In addition to the alternatives, good nutritional and husbandry strategies are important
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Efficient use of nutrients = more sustainable animal production
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• The big picture• World population is growing
• Trends• Demand for animal products continues to rise• Challenges = Opportunities
• Pressing issues• Sustainable and efficient use of resources• Impact on environment and climate
• Challenges/ opportunities• Accessing RAW MATERIALS will be the major challenge• Improving animal EFFICIENCY should be the target• Future decisions will be shaped not only by science and
economics, but also by societal issues
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The kind of thinking that got uswhere we are today
is not going to take us where we want to be in 2050