Information Package / Course Catalogue
Determination of Quality in Feeds
Course Code: VHB601
Course Type: Required
Couse Group: Third Cycle (Doctorate Degree)
Education Language: Turkish
Work Placement: N/A
Theory: 3
Prt.: 2
Credit: 4
Lab: 0
ECTS: 10
Objectives of the Course

Teaching significance of quality in feedstuffs and factors effecting feed quality. Teaching feed sampling for analysis and analysis techniques for determination of feed quality.

Course Content

Teaching significance of quality in feedstuffs and factors effecting feed quality. Teaching feed sampling for analysis and analysis techniques for determination of feed quality.

Name of Lecturer(s)
Assoc. Prof. Ömer SEVİM
Learning Outcomes
1.Understanding feed quality and its importance as a term in animal nutrition
2.Knows analysis methods for determination of quality in feedstuffs
3.Microbiological observation of feedstuffs
4.Physical, organoleptic and microscobic treatment of feeds (concentrates and forages)
5.Concentrates and sampling from concentrates
Recommended or Required Reading
1.Karabulut, A., Canbolat, Ö. (2005). Yem Değerlendirme ve Analiz Yöntemleri, Uludağ Üniversitesi Basımevi, Bursa.
2.Kellerns, R.O., Church, D.C. (2002) Livestock Feeds and Feeding, Prentice Hall, New Jersey.
3.Sauvant, D., Perez, J.M., Tran, G. (2004) Tables of Composition and Nutritional Value of Feed Materials, INRA Editions, Wageningen Academic Publishers.
4.Akkılıç, M., Sürmen, S. (1979). Yem Maddeleri ve Hayvan Besleme Laboratuvar Kitabı. A.Ü. Veteriner Fakültesi Yayınları, Ankara.
5.Faithfull, N.T. (2002) Methods in Agricultural Chemical Analysis, Biddles Ltd, Guildford and King’s Lynn, England.
Weekly Detailed Course Contents
Week 1 - Theoretical
Definition of quality, significance of feed quality, factors altering feed quality
Week 1 - Practice
Introducing basic rules and lab equipments in feed laboratory
Week 2 - Theoretical
General rules applied in feed sampling for analysis, concentrates and feed sampling from concentrates.
Week 2 - Practice
Concentrates and sampling from concentrates
Week 3 - Theoretical
Sampling from forages, mineral blocks, liquid feeds, and semi liquid feeds
Week 3 - Practice
Sampling from forages, mineral blocks, liquid feeds, and semi liquid feeds
Week 4 - Theoretical
Procedures must be undertaken for feed samples in lab, preparation of samples for analysis, qulity assessment methods in feedstuffs.
Week 4 - Practice
Literature search on specific subject
Week 5 - Theoretical
Physical, organoleptic and microscobic treatment of feeds (concentrates and forages)
Week 5 - Practice
Pyhsical, organileptic and microscobic observation of concentrates and forages
Week 6 - Theoretical
Chemical analysis- Classification of nutrients according to Wendee Analysis System, defining the term ‘crude’, dry matter analysis methods
Week 6 - Practice
Dry matter analysis in feedstuffs
Week 7 - Theoretical
Crude ash analysis (Midterm exam)
Week 7 - Practice
Performing crude ash analysis
Week 8 - Theoretical
Performing ether extract analysis
Week 8 - Practice
Performing ether extract analysis
Week 9 - Theoretical
Crude protein, crude fiber analysis and calculation of total carbohydrate and nitrogen free extract
Week 9 - Practice
Performing crude protein analysis
Week 10 - Theoretical
Van Soest method, NDF, ADF and ADL analysis
Week 10 - Practice
Performing crude fiber analysis
Week 11 - Theoretical
Practical chemical analysis
Week 11 - Practice
Performing NDF analysis in feedstuffs
Week 12 - Theoretical
Quality tests for feed additives, Quick quality determination tests for protein sources.
Week 12 - Practice
Performing ADF and ADL analysis
Week 13 - Theoretical
Microbiological observation of feedstuffs
Week 13 - Practice
Some spot and quick tests on various feedstuffs
Week 14 - Theoretical
Analysis of crude protein, digestible crude protein, energy, metabolizable energy and preparation of it solutions
Week 14 - Practice
Microscobiological observation of feedstuffs
Week 15 - Final Exam
Final exam
Assessment Methods and Criteria
Type of AssessmentCountPercent
Midterm Examination1%30
Final Examination1%70
Workload Calculation
ActivitiesCountPreparationTimeTotal Work Load (hours)
Lecture - Theory140228
Lecture - Practice140228
Assignment107180
Reading130678
Midterm Examination115217
Final Examination117219
TOTAL WORKLOAD (hours)250
Contribution of Learning Outcomes to Programme Outcomes
PÇ-1
PÇ-2
PÇ-3
PÇ-4
PÇ-5
PÇ-6
PÇ-7
PÇ-8
PÇ-9
PÇ-10
PÇ-11
PÇ-12
PÇ-13
PÇ-14
PÇ-15
PÇ-16
PÇ-17
PÇ-18
PÇ-19
OÇ-1
5
5
5
5
OÇ-2
5
OÇ-3
OÇ-4
OÇ-5
Adnan Menderes University - Information Package / Course Catalogue
2026