Actually it isn’t that easy except for fish who don’t need to be transported as whole fish like rabbits or chicken. Fish eggs only hatch when the temperature is right. Theoretically when the temperature stays low, till say 5 degrees Celsius (you need to ask biologists), the eggs won’t hatch while remaining fertile. We need to examine the maximum allowed period and conditions these eggs remain fertile till they have to hatch not to die. I am pretty sure a period of 7 months, the time it takes us flying to Mars, is within this maximum allowed period.
With chicken eggs I presume you cannot do this and rabbits are mammals like human who are born alive. Of course we need to be sure of the chickens that one or two are male and the others female. So anyhow we cannot transport them in egg-form. Only cocks or only hens don’t make chickens. I am not a biologist but that everyone understands very well. These chaps need to be transported alive.
Teaching chickens and rabbits how to stay in a weightless environment for months, is impossible. So they need a form of permanent gravitation during the 7 months trip. In the relatively small space ship it is possible to create 1/5 to 1/4 of Earth’s gravity (g) for these small animals, however not for human or only then when human stay lying down. Gravity in a space ship can only be created when you turn something around. Gravity through centrifugal force as shown in the draft here below.
In the 1 cubic meter cages A and B small animals feel comfortable when the whole rocket wall would turn in the direction of the arrows 10 rotations per minute. Or one whole turn every 6 seconds. The gravitation at the bottom of the cages is 0.28 (1/4+) times that on Earth. Men would feel dizzy because their head is almost in the centre where is no gravitation while their feet and lower body have.
There is a formula for such gravitational forces in space:
g = Decimal fraction of Earth gravity
R = Radius from center of rotation in meters
rpm = revolutions per minute
Some calculations gave me the following Earth gravities:
rpm 6 = 0.1 g (Is 10% of Earth gravity)
rpm 7 = 0.136 g
rpm 8 = 0.178 g
rpm 9 = 0.226 g
rpm 10 = 0.279 g
rpm 11 = 0.338 g (Which is about the gravitation on Mars)
rpm 12 = 0.4 g
rpm 15 = 0.628 g
rpm 19 = 1.01 g
Mars One co-founder Bas Lansdorp, was kind enough to tell me that the space ship has the inner dimensions of 5 diameters by 11 meters long. What will be inside, nobody up to Nasa at the moment exactly knows. An artificial gravitation unit may be optional.
For small animals possibly 10 to 11 rotations per minute are sufficient maintaining their muscles strong enough for the descent to Mars where the gravity is 1/3 that of Earth. The launch and then return, from Earth and then into Mars, give g-forces to bodies of every form of living creature. The g-force acceleration acts as a multiplier of weight-like forces for every unit of an object’s mass. Three g’s tends to be about the maximum not losing consciousness for human. I wonder if there is any knowledge concerning animals.
Here below a picture taken in the sky-lab where a Canadian astronaut tested her feelings when it would be most comfortable to be on a ‘conveyor-belt’ which created gravity by turning. See for more explanation here.