Jaffrabadi, Murrah, and Mehsani are breeds of which of the following?

In animal husbandry,if two closely related animals are mated for a few generations,it results in loss of fertility and vigour. Why is this so?

Match the following:

Column-$I$	Column-$II$
$a.$ Kashmiri goats	$(i)$ Superior carpet wool
$b.$ Tibetan antelope	$(ii)$ Pashmina
$c.$ Rabbit	$(iii)$ Shahtoosh
$d.$ Sheep (Nali)	$(iv)$ Angora

$A$ - Inbreeding is necessary to produce pure homozygous lines.
$R$ - Due to this,superior genes are accumulated.

In India and China,what is the approximate percentage of the world's total livestock population?

Animal husbandry deals with
$I$. Breeding of livestock like buffaloes,cows,sheep,camels,etc.,that are useful to humans.
$II$. Rearing,catching,selling,etc.,of fish,molluscs,and crustaceans.
$III$. Breeding of fowls for human use.
Which of the statements given above are correct?