ANSC-6120 Principles of Animal Breeding 2(1-1)

This is the course of under graduate level. It deals with the concept that enables combining fundamental and modern knowledge in the breeding and selection of animals based on balanced and quality manner. This course can be divided into several thematic sections. The first one relates to the classical notions of domestic animals breeding such as the history of breeding, domestication, breed, hereditary and non-hereditary variability and description of general and production traits. The second section focuses on the basic concepts in population and quantitative genetics, as well as biometrics. The third unit is dedicated to the principles of selection and domestic animals improving. The fourth unit relates to the current concepts and objectives of the molecular markers use in domestic animals selection and breeding. The course provides the students theoretical and practical knowledge and skills to identify their characteristics according to their nature and systems of breeding. Students practically trained to rearing, production, reproduction and nutritional management of livestock This course will help students gain an insight into the latest techniques of breeding and breeding plans.

Theory

Selection: natural and artificial selection, methods of selection; tandem method, independent culling level and selection index. Kinds of selection; mass selection, selection based on multiple records or lifetime average, pedigree selection, progeny testing, family selection. Selection for single and multiple traits, correlated response, genetic effects of selection, methods of assessing genetic progress. Various systems of breeding; random mating; inbreeding and its effects on small and large populations; line-breeding for increased prepotency, outbreeding; outcrossing, crossbreeding, grading up, phenotypic assortative matings. Development of inbred lines, selection for best combining abilities, reciprocal recurrent selection; Breeding for threshold characters.

Practical

Estimation of genetic gain; evaluation of livestock on the basis of their own performance, pedigree and progeny. Calculation of breeding values from single and repeated records. Measurement of coefficient of relationship and inbreeding by methods of paths and variance-covariance chart. Measurement of heterosis. Estimation of genetic changes in performance traits due to various mating systems. Exercises on the feasibility of pure breeding and crossbreeding in farm animals.

Weeks

Topic

 
  1.  

Selection: natural and artificial selection. Estimation of genetic gain.

 Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (145-157)

2

Methods of selection; tandem method, independent culling level and selection index. Evaluation of livestock on the basis of their own performance, pedigree and progeny.

Animal Husbandry By S. Iqbal Shah, Page (114-127)

3

Kinds of selection; mass selection, selection based on multiple records or lifetime average, pedigree selection, progeny testing, family selection. Evaluation of livestock on the basis of their own performance pedigree and progeny.

Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (166-190)

4

Selection for single and multiple traits, correlated response. Calculation of breeding values from single and repeated records pedigree and progeny.

Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (158-163)

5

Genetic effects of selection, methods of assessing genetic progress. Calculation of breeding values from single and repeated records pedigree and progeny.

Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (158-163)

6

Various systems of breeding. Measurement of coefficient of relationship and inbreeding by methods of paths and variance-covariance chart.

Animal Husbandry By S. Iqbal Shah, Page (125-134)

7

Random mating; inbreeding and its effects on small and large populations. Measurement of coefficient of relationship and inbreeding by methods of paths and variance-covariance chart.

Principles of Genetice, By Gardner, Simmons, Snustad, Page (568-578)

8

Random mating; inbreeding and its effects on small and large populations. Measurement of coefficient of relationship and inbreeding by methods of paths and variance-covariance chart.

Principles of Genetice, By Gardner, Simmons, Snustad, Page (568-578)

9

Mid Test

 

10

Line-breeding for increased prepotency. Measurement of heterosis

Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (220-224)

11

Outbreeding; outcrossing.

Principles of Genetics and animal breeding, By FH Khan, Ashok Singh, Page (191-194)

12

Crossbreeding  grading up. Measurement of heterosis.

Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (246-249)

13

Phenotypic assortative matings. Estimation of genetic changes in performance traits due to various mating systems.

Principles of Genetics and animal breeding, By FH Khan, Ashok Singh, Page (188-189), (200-203).Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (212)

14

Development of inbred lines. Estimation of genetic changes in performance traits due to various mating systems.

Principles of Genetics and animal breeding, By FH Khan, Ashok Singh, Page (188-189), (200-203).Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (212)

15

Selection for best combining abilities, reciprocal recurrent selection. Exercises on the feasibility of pure breeding and crossbreeding in farm animals.

Principles of Genetics and animal breeding, By FH Khan, Ashok Singh, Page ( 250-256)

16

Breeding for threshold characters. Exercises on the feasibility of pure breeding and crossbreeding in farm animals.

FH Khan, Ashok Singh, Page (188-189), (200-203).Genetics of Livestock Improvement 4th edition, By John F. Lasley, Page (212)

Assessment Criterea

Sessional: 04

Mid-term: 06

Final Exam: 10

Practical: 20

Course Material

Other Courses by Ms. Atia Iram