Hybrid variety animals
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Transcript of Hybrid variety animals
WELCOME
KERALA UNIVERSITYCOLLEGE OF TEACHER EDUCATION
KUMARAPURAM
B.Ed. COURSE 2013-2014SEMESTER II
OPTIONAL: NATURAL SCIENCEPOWERPOINT PRESENTATION
Submitted toLesha Teacher
Submitted byArchana s s Nair
HYBRID VARIETY ANIMALS(CATTLES)
In biology a hybrid is an offspring of two animals or plants of different breeds, varieties, species, or genera.[Using genetics terminology, it may be defined as follows. In general usage, hybrid is synonymous with heterozygous any offspring resulting from the breeding of two genetically distinct individuals. A genetic hybrid carries two different alleles of the same gene. A structural hybrid results from the fusion of gametes that have differing structure in at least one chromosome as a result of structural abnormalities. A numerical hybrid results from the fusion of gametes having different haploid numbers of chromosomes. A permanent hybrid is a situation where only the heterozygous genotype occurs, because all homozygous combinations are lethal.
INTRODUCTION
HYBRIDISATION
It is an artificial method of developing high quality plants and animals.
The offspring's produced by hybridization are called hybrids.
CHARACTERISTICS OF HYBRID VARIETIES
High Yield
Disease Resistance
Desirable characters
Tolerance to climate
High production capacity
HYBRIDISATION IN ANIMALS
Hybridization is utilized for developing improved varieties of animals as well.
There a number of institutions in our state which have gained in developing high yield varieties of animals.
Eg: Sunandini, Jersey, Swissbrown etc
SUNANDINI• A very high yielding cross breeding cow specially suited for kerala.• It is developed in Indo Swiss Project at Mattupetty near Munnar.
VECHUR COW
• Vechur cow is Kerala's own variety of cattle.•They are the smallest cows in the world.• They are commonly seen as brown color.
PECULARITIES OF VECHUR COW
High milk yielding capacity.
High disease resistance.
Recently they reached the edge of extinction.
As result of the combined efforts of Kerala Agriculture University and ICAR they get rebirth .
INDIAN VARIETY CATTLESAHIWAL REDSINDHI
PECULARITIES OF INDIAN VARIETY
Resistance to disease is high.
Easy to rear.
Weight of female less.
Milk production is low.
Milk production period is short.
FOREIGN VARIETY CATTLESWISSBROWN JERSEY CROSS
PECULARITIES OF FOREIGN VARIETYResistance to disease is low.
Need more care.
More weight .
Milk production is high.
Milk production period is long.
BENEFITS OF HYBRID VARIETY CATTLES
Through hybridization we get high yielding varieties.
Increasing milk production.
High longevity.
High immunity to disease.
CATTLE RESEARCH CENTRES
Indian Council of Agriculture Research Centre, New Delhi.
Alamatty, Tamil Nadu
Surat Gargh, Rajasthan
Dharm road, Gujarat
Hassarhotta, Karnataka
CONCLUSIONHybrid variety animals are high yielding.
But it is not good to depend on hybrid varieties by fully avoiding our native variety animals. They are a part of our valuable biological wealth. The hybrid breeds are resulted from the crosses between local varieties having some desirable characters with high yielding foreign varieties. So the disappearance of native varieties can lost even the possibility of the production of hybrid varieties itself. So it is equally importance to maintain our native varieties along with the high yield hybrid varieties.
REFERENCERieger, R.; Michaelis A.; Green, M. M. (1991). Glossary
Of Genetics (5th Ed.). Springer
Dr. Valsala Kumar, Msc Phil(phd)(zoology), (2008);
New Jyothi Publications.Gerard J Tortora; Principles of Anatomy and Physiology
(13th edition)
THANK YOU