animal husbandry deals with care and breeding of livestock that are useful to human being. new...
TRANSCRIPT
STRATEGIES FOR ENHANCEMENT IN FOOD
PRODUCTION
ANIMAL HUSBANDRY
Deals with care and breeding of livestock that are useful to human being.
New technology must be applied to achieve quality and quality.
Dairy farm management
Selection of good breeds Provided proper shelter Scientific way of feeding i.e. quality and
quantity of fodder. Sufficient quantity of water Maintenance of disease –free Stringent cleanliness and hygiene
Poultry farm management
Selection of disease free and suitable breeds
Proper feeds and water Proper and safe farm conditions Hygiene and health care
Bee keeping or Apiculture
Knowledge of nature and habits of bee Selection of suitable location of keeping
beehives Catching and hiving of swarms Management of beehives during
different seasons Handling and collection of honey and
beewax
Aim of animal breeding
Increasing the quantity of yield Improving the quality of produce
BREEDING
Breeding
inbreeding
Outbreedingout crossing
Cross breedingInterspecific hybridisation
Inbreeding
Superior males and females of same breed are identified and mated
Superior males and females of progeny are identified for further mating
Increases homozygousity Pure line can be developed
Exposes harmful recessive alleles, which is eliminated by selection.
Accumulate superior genes Causes breeding depression
Out breeding
Breeding of unrelated animals either of the same breed or different breeds or different species.
Types of outbreeding- (a) outcrossing (b) cross-breeding (c) Interspecific hybridisation
Outcrossing
Animals of same breed are mated having no common ancestor on either side of their pedigree up to 4-6 generation.
Overcomes inbreeding depression
Cross-breeding
Superior males of one breed are mated with superior females of another breed of same species.
Desirable qualities of two different breeds are combined.
Interspecific hybridisation
Male and female animals of two different species are crossed.
Combine the desirable features of both parents
E.g. mule by a cross between a male donkey and female horse
Artificial insemination
Semen can be stored or frozen and used later
Easy for transportation to distant place Semen from one bull can impregnate a
number of females
Multiple ovulation embryo transfer Cow is administered FSH to induce super
ovulation, production of 6-8 ova per cycle.
Mating of the same cow with selected bull or artificially inseminated
Fertilised eggs at 8- 32 stage are recovered
Transfer of fertilised eggs to surrogate mother
Traits that breeder try to incorporate in crop plant
High yield Better quality of produce Increased tolerance to environmental
stress Resistance to pathogen Increased tolerance to insect pests
Steps in plant breeding
Germplasm collection Evaluation and selection of parents Cross breeding of selected parents Selection and testing of superior
recombinants Testing, release and commercialization
of new cultivars
Crop varieties with increased nutritional quality
Lysine and tryptophan rich maize High protein rich wheat Iron fortified rice Vitamin C rich bitter gourd, tomato.
mustard, bathua Iron and calcium rich spinach and bathua Vitamin A rich carrots, spinach and
pumpkin
Single cell protein
Microbes are grown on an industrial scale and used as nutrient rich food. E.g. Spirulina.
Advantages: SCPs are rich in proteins and low in fats. They can be easily grown on cheaper
materials like wastewater, animal manure, molasses etc.
The use of waste water reduces pollution.’
They act as the supply of fertilizers, pesticides etc.
Tissue culture
Technique of regeneration of whole plant from any part of the plant by growing it on suitable culture medium under aseptic conditions in vitro.
Advantages: A number of plants can be grown in a short
period of time. Healthy, disease free plant can be grown by
meristem culture. Somatic hybrids can be raised by tissue culture,
where sexual hybridization is not possible.
Somatic hybridisation
Process of fusion of protoplasts of somatic cells of two different varieties or species
Steps- (a)isolation of protoplasts (b)fusion of protoplasts (c))growth of fused protoplasts to
form somatic hybrid E.g. pomato
"Never worry about numbers. Help one person at a time,
and always start with the person nearest you."
- Mother Teresa