Strategies for Enhancement in Food Production Test - 11

Continued close breeding leads to reduced fertility and productivity. Close breeding for successive times causes pure line establishment.

All the individuals related by common descent and having a similar genotype constitute a line. Pure line is obtained by successive breeding.

Out-breeding is the breeding of the unrelated animal which may be of same breed without common ancestors or cross breeding or inter-specific hybridization.

Common fishes of fresh water includes, Catla, Rohu and Common carp. Hilsa, Sardines, Mackerel and Pomfrets are marine fishes that are eaten by human beings.

Heavy mortality of fishes within a few days in lake is due to spraying of DDT on large scale. Excessive water and heavy rain as well as change in temperature do not cause large scale death of fishes in a lake.

Mule is produced by interspecific hybridization of horse and donkey. Mule is sterile. Mule is used to carry loads in hilly areas.

MOET is program for herd improvement. In this technique cow is administrated with hormone for super-ovulation to produce more than one egg. The egg is artificially inseminated to obtain zygote. The embryo developed so is transferred to surrogate mother.

Pisciculture or fish farming is the principle form of aquaculture. Aquaculture involves farming in fresh water and salt water organism under controlled condition.

Honey is the food of high nutritive value and finds use in Indigenous system of medicine. Beeswax is used in preparation of cosmetic and polishes.

Fisheries has important place in Indian economy. It provides income and employment to millions of farmers and fishermen particularly in coastal states. It is an only source of income for many persons living near coastal areas.