Use of Malt Trub and Spent Grain (Process by-
Products) to Produce Food for Cattle
Natasha R. Casiano VélezIván J. Vargas RiveraJeffrey Traverso Ruiz
Prof. Patricia Ortiz BermúdezMentors: Ing. José L. Lebrón
Ing. Marlon Cabrera Agro. Alvaro Arias
Agenda:
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• History of the Company• Project Background• Project Statement• Objectives• Procedure• Cattle Nutrition
Requirements
• Results• Project Design• Cost Analysis• Conclusions
History of Company:
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Founded in 1937 by Alfonso Valdés.In 2003 the 3rd generation of Valdés family took the Company’s leadership.
History of Products:
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1938- Cerveza India 1939- Malta India
History of Products:
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•1979- Medalla Light •The name was inspired by the medals received in the Panamerican Games celebrated in P.R. on that year.
History of Products:
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2010- Silver Key Light 2011- Magna Premium Lager
Project Background: Ingredients
Malted Barley Hop Water Yeast
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Project Background: Process
Malt Receiving GrindingMaceration Filtration Boiling
Bright Beer Tanks
Packing
Filtration Fermentation & Maturation
Cooling
Maelstrom or Whirpool
CO2
SterileAir
Malt Trub
Project Statement:•Malt trub processing in the treatment plant costs $32 per 1,000 gallons.
•Malt trub has an elevated organic load which, when treated,produces strong odors.
•The company produces about 5,000 gallons average per week.
•Which costs approximately $8,300 per year.
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Objective of the Project:
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• Develop a viable solution to lower the costs of processing the malt trub.
• A meeting with cattle ranchers was held in order to come up with the idea of preparing a mixture of industrial and poultry waste to prepare cattle food.
• Spent Grain (SG)• Malt Trub (MT)• Chicken Poultry (CP)• Spent Grain + Chicken Poultry 1:1, 1:4• Malt Trub + Chicken Poultry 1:1• Spent Grain + Malt Trub + Chicken Poultry 1:1:1• Spent Grain + Malt Trub 1:1, 3:1, 1:2
Samples
Parameters:
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• Crude Protein • Soluble Protein• Acid Detergent Fiber• Neutral Detergent Fiber• Non-Fiber Carbohydrates• Total Digestible Nutrients
• Net Energy - Maintenance, Lactation, Gain
• Mineral Content - P, Mg, S, Ca, K, Na
• Metal Content - Mn, Zn, Mo, Fe, Cu
• pH
Results:
• Forage Quality Report
Results: Crude and Soluble Protein Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Fiber Content Analysis in Samples Containing Malt Trub, Spent Grain and Chicken Poultry
Results: Nutrient Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Nutrient Energy Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Mineral Content (I) Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Mineral Content (II) Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Manganese Content in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Zinc Content Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Molybdenum Content Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Iron Content Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
Results: Copper Content Analysis in Samples Containing Spent Grain, Malt Trub, and Chicken Poultry
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Sample Average pHSpent Grain 4.533Malt Trub 4.150Chicken Poultry 7.133Spent Grain, Chicken Poultry 1:1 6.700Spent Grain, Chicken Poultry 1:4 7.133Malt Trub, Chicken Poultry 1:1 7.333Spent Grain, Malt Trub, Chicken Poultry 1:1:1 6.333Spent Grain, Malt Trub 1:1 3.700Spent Grain, Malt Trub 3:1 3.700Spent Grain, Malt Trub 1:2 3.900
Results: pH Values (As Feed)
Decision Factor Matrix
Parameters Weight Spent Grain Malt Trub Chicken Poultry
Protein 1 3 1 5
Fiber 1 3 0 3
Dig. Nutrients 2 5 5 5
Energy 2 4 5 4
Minerals 3 4 2 1
Metals 2 5 4 1
pH 1 3 3 5
Est. Carbs 1 0 5 0
Total 13 49/65 43/65 37/65
Decision Factor Matrix
Parameters Weight SG + CP 1:1 SG + CP 1:4 MT + CP 1:1
Protein 1 4 5 5
Fiber 1 5 5 5
Dig. Nutrients 2 5 5 5
Energy 2 4 4 4
Minerals 3 1 1 1
Metals 2 1 1 1
pH 1 5 5 5
Est. Carbs 1 0 0 3
Total 13 37/65 38/65 41/65
Decision Factor Matrix
Parameters Weight SG+MT+CP 1:1:1
SG + MT 1:1 SG + MT 3:1 SG+MT 1:2
Protein 1 4 3 3 3
Fiber 1 3 2 3 2
Dig. Nutrients 2 5 5 5 5
Energy 2 4 4 4 4
Minerals 3 2 4 4 4
Metals 2 2 5 5 5
pH 1 4 3 3 3
Est. Carbs 1 2 3 2 4
Total 12 41/60 50/60 51/60 52/60
Final Mixture Selection:
• Suggested by Agro. Arias:– Spent Grain, Malt Trub, and Chicken Poultry 1:1:1 for beef cattle.– Spent Grain alone for dairy cows.
• We determined by data analysis that the best sample is Spent Grain, Malt Trub 3:1
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General (Ideal) Process
Spent Grain Drying 24h
Final Product
Malt Trub From
Maturation Process
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Alternative Process
Spent Grain Storage
Malt Trub From
Maturation Process
Malt Trub Storage
Cost Analysis: Investments vs. Income
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InvestmentsFirst Year ($) Consequent Years ($)338,162.22 270,547.50
•*If sold at $0.01/lb•**Assuming a scope of 1% among dairies around the island.
Yearly Income
*Food Sales ($)**Malt Trub Expense
Reduction ($)23,933.48 8,342,857.14
Conclusions and Recommendations
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• Cheaper option for cattle feeding purposes.• High incomes.• Analyze other spent grain: malt trub: chicken manure
proportions.• Establish sample analyses based on swine nutritional
requirements.
Acknowledgements:
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• University of Puerto Rico, Mayagüez– Mentors
• «Compañía Cervecera de Puerto Rico»– José Lebrón– Marlon Cabrera– Carlos Colberg
• Agro. Álvaro Arias
References:
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