So, I always assume about 6-8 hours [for sperm to reach the egg]. If you are talking about natural conception (i.e. not IUI), the sperm has to work its way through the cervical [fluid], and much is stored up in the cervical glands (that is how they can stick around for 3 days or more).
There are only around 200 of the white tigers left in the world. White tigers are an Asian species, found from the frozen tundra of the Soviet Far East, south to the humid jungles of Malaya and Indonesia, and west to the hot, hardwood forests of India. There are five living subspecies; three others are already extinct.
According to reports, there were 40,000 tigers in India a century ago. The country is home to 40% of the world's tigers, with 23 tiger reserves in 17 states. The 2006 count found a steep fall in India's tiger population to 1,411 from 3,642 animals in a federal census in 2002. Poaching and urbanisation are blamed for the decline in tiger numbers in the country.