ZOOTECHNICAL, BIODIVERSITY AND GENETIC IMPROVEMENT
Learning outcomes of the course unit
At the end of the course the student is expected to be able to:Know and understand the basics of genetic transmission of traits and of genetic improvement;Acquire the elements for choosing the breeders;To recognize the main breeds of animals of economic interest (1st Dublin marker);Applying theoretical knowledge through the solution of specific problems (2nd Dublin Indicator);To demonstrate the autonomy of judgment (3rd Indicator of Dublin) in the application of knowledge to the genetic improvement of animal populations;To make correct choices for the management of animal populations, in particular for those with limited spread;Acquire a good language property (4th Dublin marker), also linked to the discussion that the teacher urges during the front lessons;To raise the student's ability to learn, through discussion, the practical applications of genetic improvement in the main breeds raised (5th Dublin marker) so that they have cognitive elements that can be spent in professional practice.
Prerequisites
No pre-requisites are provided
Course contents summary
The first part of the course covers the topics of discussion of basic genetics (DNA, RNA, genes, chromosomes, Mendel's laws, exceptions to Mendel's laws, sex-linked inheritance, multiple allelism, lethal genes).
The second part concerns the genetic improvement (infinitesimal genetic model, heritability, phases of a breeding program, evaluation of a program of genetic improvement, inbreeding and crossing).
The third part concerns the study of ethnology (breeds of the major livestock species, particularly those with a limited size).
Course contents
GENERAL LIVESTOCK SCIENCE (2 hours): The livestock systems for the production of meat, milk and other animal products.DEMOGRAPHY (2 hours): The structure of animal populations.BASIC GENETICS (15 hours): Outline of genetic transmission of characters. Mendelian heredity (qualitative characteristics, laws of Mendel, gene interaction and deviation from expected Mendelian relationships, sex determination and sex-linked inheritance, lethal genes, multiple allelism). Principles of population genetics (concept of gene frequency and genotypic, Hardy-Weinberg law).GENETIC IMPROVEMENT OF ANIMALS IN LIVESTOCK PRODUCTION (20 hours): Brief references to statistical concepts (probability, variance, covariance, correlation and regression). Quantitative traits (variability, composition of phenotypic variability, environmental variability, additive and non-additive effect of genes, heritability, repeatability). Organization of selection in Italy (stud books, genealogical registers, hybrid breeding pigs). The functional recording of animal products. The relationships. Methods for estimating the genetic value of breeders (performance testing, sib test, progeny test, pedigree index, BLUP-animal model, genomic selection). Direct and indirect selection, genetic progress, selection for multiple traits. Reproduction methods: inbreeding and crossbreeding. Application of genetic improvement to major livestock production (cattle: milk and meat, pig: meat). Management of animal populations with limited diffusion.ZOOTECHNICAL ETHNOGRAPHY AND ETHNOLOGY (8 hours):General characteristics, origin, evolution, distribution and inventory of breeds: - Dairy cattle breeds, beef and dual purpose (meat and milk); - Sheep breeds reared in Italy according to the prevailing attitudes; foreign sheep breeds of most interest to the Italian breeder; - Goat breeds; - Pig breeds.
Recommended readings
BITTANTE G., ANDRIGHETTO L., RAMANZIN M.: Fondamenti di Zootecnica. Liviana Ed., Padova, 1990
CALAMARI L., FAVERZANI S.: Atlante delle razze bovine (CD ROM) Pagnacco G. (2016): GENETICA ANIMALE Applicazioni zootecniche e veterinarie, Casa editrice Ambrosiana, MI.
PIERCE B.A.: Genetica, Zanichelli Ed., 2003.
Students can download pdf files of the lessons from Elly Platform (http://elly.veterinaria.unipr.it/2017/)
Teaching methods
The course is based on frontal lessons, during which, alongside the theoretical part, basic genetic problems and ways to solve them will be proposed. The discussion during the lessons will provide students with the ability to face up to the final assessment and other types of problems that may be presented in future professional activities.The teaching material used during the lessons is provided on the Elly-Veterinary Platform at the beginning of the course (any changes in course of work will be reported promptly).Slides are considered an integral part of teaching material and lesson notes.
Assessment methods and criteria
The achievement of the objectives will be assessed through an oral examination at the end of the course. There are no ongoing testing activities. At this moment, in addition to the knowledge of the topics included in the program (1st and 2nd Dublin indicator), the student must demonstrate, through the development and solution of specific problems, to have acquired good reasoning skills and exposure (3rd , 4th and 5th Dublin indicator).
To the students with diagnosis of specific learning disability (DSA) certified under law n. 170/2010, proper specific support will be provided.
