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Feedstuffs

Course developer

Prior knowledge

Ķīmi3015, The Basics of Biochemistry

LauZ4031, Mechanisation of Agriculture

LauZ4243, Forage Production

Vete2023, Animal Anatomy and Physiology

Replaced course

LauZ2052 [GLAU2052] Feedstuffs

Course abstract

The study course acquaints students with the feed components and their by-products necessary for the feeding of animals – water, dry matter, crude protein, carbohydrates, crude fat, minerals and others nutrients biochemical and physiological role in metabolism and requirement of nutrients and additives the animals for different species and physiological groups.
The aim of the study course is to get view of the chemical composition of forage as a primary indicator of feed value, differentially to evaluate the nutritional value of forage as well as the importance of feed components and additives in the nutrition of animals of different species and physiological groups.

Learning outcomes and their assessment

Students acquire knowledge on the chemical composition of feed: water, dry matter, protein, carbohydrates, fats, mineral substances and vitamins and their significance for the metabolism on the animal organism and for meeting the requirements regarding the use of the most appropriate types of feed and norms of additives envisaged in relation to feeding norms. Successful passed tests. Students acquire skills regarding the main principles of nutrient rationing for animals of different species and groups, and how to choose the most appropriate types of feed and feed additives to meet the requirements. Successful completion of practical works and laboratory works. Students are competent in matters relating to the most appropriate nutrients for animals of different species and groups, taking into account the nutritional standards. Successful passed exam.

Course Content(Calendar)

1. Chemical composition of feedstuffs. (L – 1 h; Pr.w. - 1 h; Lab. w. -1 h)
2. Water needs and supply for different species of animals. (L – 1 h; Pr. w. - 1 h; Lab. w. -1 h)
3. Feed dry matter as a criterion for rationing in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w.- 1 h)
4. The role of protein in animal nutrition. (L – 1 h; Pr. w. - 1 h; Lab. w.- 1 h)
5. Ranking of carbohydrates in animal nutrition. (L – 1 h; Pr. w. - 1 h; Lab. w. -1 h)
6. Types of lipids in animal nutrition. (L – 1 h; Pr. w. - 1 h; Lab. w. -1 h)
7. Minerals, their ranking in animal nutrition. (L – 1 h; Pr. w. - 1 h; Lab. w. -1 h)
8. Vitamins, their ranking in animal nutrition. . (L – 1 h; Pr. w. - 1 h; Lab. w. -1 h)
1st test on Nutrient in animal nutrition.
9. Feedstuffs and their characteristics. (L – 1 h; Pr. w. - 1 h; Lab. w. -1 h)
10. Roughages, its characteristics and role in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w.- 1 h)
11. Succulent forage, its characteristics and role in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w. -1 h)
12. Fodder roots and tubers, their characteristics and role in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w. -1 h)
13. Fodder grains, their characteristics and role in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w. -1 h)
14. By-products of the food industry, their characteristics and role in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w. -1 h)
15. Feedstuffs of animal origin, their characteristics and role in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w. -1 h)
16. Feed additives, their characterization and role in animal nutrition. (L – 2 h; Pr. w. - 1 h; Lab. w. -1 h)
2nd test on Feedstuffs in animal nutrition.
Part-time extramural studies:
All the topics intended for full-time studies are covered, yet the number of contact hours is ½ of the specified number of hours.

Requirements for awarding credit points

To ensure access to exam, students have to comply with course requirements, i.e. amount of classwork, tests about certain topics, practical works and laboratory works in accordance with course cpecification have to be evaluated positively.

Description of the organization and tasks of students’ independent work

During each practical and laboratory work, students receive individual tasks that need to be completed and defended.

Criteria for Evaluating Learning Outcomes

Successful evaluation of test and exam. Students take the exam if the tests are evaluated with at least 4 balls. Practical and laboratory work is evaluated in accordance with the task-specific assessment procedure.

Compulsory reading

1. Osītis U. Dzīvnieku ēdināšana. LLU. Jelgava. 2005. 312 lpp.
2. Osītis U. Dzīvnieku ēdināšana kompleksā skatījumā. Ozolnieki, 2004. 364.lpp.
3. Osītis U., Strikauska S., Grundmane A. Lopbarības analīžu rezultātu analīžu rezultātu apkopojums. Jelgava, 2000. 61 lpp.
4. Latvietis J. Lopbarība. SIA Latvijas Lauku konsultāciju un izglītības centrs. Ozolnieki. 2013. 308 lpp.
5. Moderna piena ražošanas ferma (tehnoloģija, tehnika, saimniekošana)/ J.Priekuļa redakcijā. Jelgava. LLU. 2012. 240. lpp.
6. Piena lopkopība. Rokasgrāmata (4. nodaļa). Prof. A. Jemeļjanova redakcijā. Sigulda. 2001.191 lpp.
7. Osītis U. Barības līdzekļu novērtēšana atgremotāju ēdināšanā. Jelgava, LLU, 1998. 98 lpp.
8. Osītis U. Lauksaimniecības dzīvnieku ēdināšanas praktikums. Rīga. Zvaigzne, 1987. 211 lpp.

Further reading

1. Degola L., Trūpa A., Aplociņa E. Lopbarības ķīmiskās analīzes un sagremojamība. Elektroniski pieejams: http://www.vbf.llu.lv/sites/vbf/files/files/lapas/Lopbarības%20ķīmiskās....pdf
2. Lopbarības analīžu rezultātu apkopojums. Elektroniski pieejams: http://www.laukutikls lv/sites/laukutikls.lv/files/upload/piena_rokasgramata/54_lopbariba_internetam.pdf
3. Minerālvielas liellopiem. Elektroniski pieejams:http://laukutikls. lv/sites/laukutikls.lv/files/informativie_materiali/minerali_2016_
4. Osītis U. Zirgu ēdināšana. Jelgava. Proventus Farms Pluss. 2007. 289.lpp.
5. Osītis U. Gaļas liellopu ēdināšana. Jelgava, LLU. 2000. 47.lpp.

Periodicals and other sources

1. Saimnieks. Rīga: TEE Bio, ISSN 1691-1598
2. Agrotops. Rīga: Aģentūra Agro apgāds, ISSN 1407-5164.
3. Latvijas Lopkopis. Ozolnieki. LLKC. Apgāds.
4. Praktiskais Latvietis. Rīga: Latvijas Mediji. ISSN 14073358.

Notes

Feedstuffs