Strategies for Enhancement in Food Production Flashcards
India and China combined have
> 70% of World’s livestock population
Animal husbandry is
As much science as it is art
Extended, animal husbandry includes
Poultry farming and fisheries
Fisheries include
Rearing, catching, selling of fish, molluscs (shell fish) and crustaceans (prawns, crabs)
Contribution to world farm produce of India + China
25% - productivity per unit is very low
Milk yield is primarily dependent on
Quality of breeds
Poultry includes
Domesticated fowl used for food and eggs like chicken, ducks, turkey and geese
Inbreeding
Mating of closely related individuals within the same breed for 4-6 generations
Superior female (cattle)
The one which gives more milk per lactation
Superior male (cattle)
The one which gives superior progeny
Inbreeding exposes
Harmful recessive genes that are eliminated by selection
Inbreeding helps in
Accumulation of superior genes and elimination of less desirable genes
In inbreeding, there is selection at
Each and every step
Continued close inbreeding
Decreases fertility and productivity (inbreeding depression)
Best method to overcome inbreeding depression
Out-crossing
Out-crossing
Mating of unrelated superior animals of the same breed having no common ancestor for 4-6 generations
Out-breeding includes
Out-crossing, cross-breeding, Interspecific hybridization
Cross breeding
Superior males of 1 breed + superior females of another breed
Hybrid progeny may
May be used directly or may undergo inbreeding and selection to produce stable breeds
Bikaneri ewes and Marino rams
Hisardale (Cross breeding)
Interspecific-hybridization
Male and female animals of 2 different related species are mated (Mule)
Controlled breeding experiments are carried out using
Artificial insemination
Mostly, success rate of artificial insemination in cattle is
Fairly low
MOET
Multiple Ovulation Embryo Transfer