SiteGround
www.siteground.com
Web Hosting Services Crafted with Care!
Daily Science
www.bioscience.pk
The Science News app that will get you to the breaking news.

INTRODUCTION TO ANIMAL BREEDING

Published in Zoology
Thursday, 15 June 2017 07:25
From the very early days human beings depend on animals and animal products for food and other requirements. In dairy and poultry farms high yielding animals are reared. These high yielding animals are produced by hybridisation experiments. Previously the animals were developed basing on unscientific methods. Before the discovery of principles of heredity human beings have selected the animals with required characters and learned to develop the plants having the selected characters. This phenomenon is called Artificial selection. However, an increased knowledge of biology, especially genetics, has helped in improving the quality of animals and animal products as per the human requirements.
 
ANIMAL BREEDING - PRINCIPLES

The animal breeder faces many complex problems during hybridisation experiments because many traits of animals are dependent on the interaction of multiple genes. When the attempts are made only to increase the size of eggs in fowls,it was observed that the progeny produced yielded few number of eggs or even they die sometimes. That is if only one character is taken for improvement of the animals, the other characters will degenerate or result in harmful effects. Hence at the time of selection all the desirable characters are to be taken into consideration. The techniques for the improvement of animals involve principles of selection based on quantitative variations. It is not possible for all of the desirable traits to be obtained in one individual. The successful product must contain maximum number of desirable traits and a minimum number of undesirable traits.
 
1. The Body Form
 
It is an important factor in selecting racially improved variety of animals. A certain body form in cattle and broilers will be having high market value. They yield delicious mutton if they are having well built body form.
 
2. Productivity
 
This is of great significance to the breeder. Some times it has first priority over other traits. For example the number of eggs, quantity of milk, or wool per animal is an important criterion in any programme of improvement of animals.
 
3. Quality of the Product
 
In addition to the quantity, the quality of the productivity is also to be taken into consideration during breeding experiments. The cattle which yield low quantity of milk but having high percentage of fat content are more prominent than those which yield high quantity of milk but with low percentage of fat content. Similarly he quality of wool in a sheep is more important than the quantity of wool.
 
4. Resistance to Diseases
 
The ability of the animal to resist diseases, to withstand adverse environmental conditions are also important in the animals produced by hybridisation experiments.
 
5. Early Maturity
 
It is another trait that the animal breeders look into for improvement of animals. The earlier, the animals mature to the productive age, lesser is the cost of maintaining them. If a hen matures early and begins egg production, it is more valuable than that which matures later.
 
6. Economy in the Use of Food
 
If the amount of food required to produce a certain quantity and quality of animal product is comparatively higher, the commercial value of such an animal is said to be very low.

In milk yielding cattle and egg yielding fowls if most of their food material is converted into productivity, such cattle and fowls are considered as more valuable. The above mentioned are only few of the desirable qualities that the animal breeders select for improvement of animals.

Useful Sites

  • NCBI

    National Center for Biotechnology Information
  • LTO

    Lab Tests Online® by AACC
  • ASCP

    American Society for Clinical Pathology
  • ASM

    American Society for Microbiology
  • The Medical Library®

    Project of BioScience.pk

Sponsored Links

SiteGround
www.siteground.com
Web Hosting Services Crafted with Care!
BioScience.pk App
www.bioscience.pk
Put vital info into the palm of your hand.
Online Digital Library
www.bioscience.pk
Free Downloads Medical Books.
Advertisement

Sponsored Links

BioScience.pk App
www.bioscience.pk
Put vital info into the palm of your hand.
ASH Job Center
www.jobcenter.hematology.org
By American Society of Hemotology
SiteGround
www.siteground.com
Web Hosting Services Crafted with Care!
Online Digital Library
www.bioscience.pk
Free Downloads Medical Books.
Make money online!
www.adf.ly
Use a URL shortener service that pays.
Daily Science
www.bioscience.pk
The Science News app that will get you to the breaking news.

Connect With Us

Contact Us

All comments and suggestions about this web site are very welcome and a valuable source of information for us. Thanks!

Tel: +(92) 302 970 8985-6

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Website: https://www.bioscience.pk

Our Sponsors

By using BioScience.pk you agree to our use of cookies to enhance your experience on this website.