Question

Advantages of induced breeding of fish

Answer 1

Advantages of Artificial Breeding of Fish
There are many advantages of artificial breeding of fish. The main advantages of artificial breeding of fish are described below.
The fishes which don’t lays eggs in stagnant stream, artificial breeding is a must for those types of fishes like rui, katla, mrigal etc.
Make sufficient supply of minnow by not depending on natural source.
Fresh minnow can be found.
Advantages of collecting desired minnow.
Producing high quality minnow species.
Good price for fish and minnow.
No need to go far for collecting minnow.
Through artificial breeding we can get good sized and weights fish.
A female fish of 1kg weight can produce about 0.1-0.2 million eggs.
Artificial breeding become very profitable if it possible to hatch 50% eggs.
It is possible to produce hybrid fish by mixing different species of fish.
There are two breed of fish.
Advantages of natural maturation and spawning

What are the advantages of natural maturation and spawning? A partial answer is that, by providing the conditions for natural breeding, the culturist no longer has to worry about most of the topics in this book - things like stress, anesthesia, fertilization technique, choice of hormone, and gonadal biopsy become irrelevant. It is also true that, by and large, hormonal methods do not work well for all species and the effect of repeated handling is to further reduce the effectiveness of a treatment. Natural spawning alone has advantages over stripping in fishes where egg quality deteriorates rapidly after ovulation.

Although control of the environment obviously has its own set of problems, the benefits of natural reproduction extend beyond simply avoiding the complications of hormone technology. At the time of writing this book, one of the most active topics in seed production and larval rearing is the importance of broodstock management. More than ever before, researchers and farmers are finding that broodstock diet strongly affects not only fecundity but also the biochemical makeup of eggs and sperm as well as the growth rate and survival of larvae (Foscarini 1988).

The term "egg quality" is frequently used and, although not a very accurate one, it conveys the idea of evaluating reproductive output in ways other than by numbers alone. A striking example of how invisible differences in gamete quality can affect later performance is provided by the cryopreservation of eggs and sperm: gametes obtained late in the season or from poorly fed broodstock look healthy, but cannot withstand the artificial challenge of freezing (Chapter 7).