According to the question, if the number of roes is x, the number of rabbits is y, the number of turtledoves is z, and one kilogram = 16 Liang, then four Liang =0.25 Jin.

Then x+y x+y+z = 99；; 18x+3y+0.25z= 100

Because x, y and z are positive integers and18× 6 =108 >:100, x

Let x be equal to 1, 2, 3, 4 respectively, and then bring it into the calculation, and choose y and z as one of the positive integers, which is the correct answer.

The number of roe deer, rabbits and turtledoves brought in is 3, 8 and 88 respectively.