Ms Ryder-Richardson's husband Colin MacDougall was fined a further £4,000.
"Risk assessments, health and safety, is part of our zoo licence, which we have to have every three years. We have a health and safety check every year" she said.
"The fine is really going to test us. It'll make things very difficult next year, and we may not be able to employ some people".
A three-year-old boy and his mother were injured when part of a tree fell on them at the park in 2010, although the court accepting that the accident was not directly related to the safety railings.
Manor House Wildlife Ltd fined £70,000 over safety breaches
The husband of former TV presenter Anna Ryder-Richardson has been fined £4,000 after pleading guilty to charges relating to health and safety breaches at the couple's West Wales wildlife park.
A judge at Swansea Crown Court also fined Manor House Wildlife Ltd - the company Colin MacDougall owns with his wife - a further £70,000.
The company will also have to pay £37,000 in legal costs.
Ms Ryder Richardson was cleared of two safety breaches following an incident in 2010 in which three-year-old Gruff Davies-Hughes was seriously hurt when a tree branch fell on him and his mother.
Both the prosecution and the defence agreed that the charges were not directly related to the incident in which Gruff and his mother were injured, and that it could not be certain that the accident would not have happened even with a safety system in place.
The family of a boy and his mother who were seriously injured in an incident at a west Wales wildlife park in 2010 say they are still living with the "devastating effects" of what happened.
Three-year-old Gruff Davies-Hughes suffered serious head injuries when a heavy branch fell on him in strong winds. He spent three days in intensive care after being airlifted to hospital
His mother suffered a head injury and fractures to her leg, pelvis, and arm.
The family continue to live with the devastating effects of the accident upon a daily basis. Whilst progress is being made they request that their privacy is respected in order to best facilitate that continued recovery and they thank everyone for their understanding in that regard.
– Family statement
Former TV star, Anna Ryder Richardson has been cleared of two safety breaches. Her husband, Colin MacDougall, pleaded guilty to four charges - two in his own name and two on behalf of the company, Manor House Wildlife Ltd. He will be sentenced today.
Anna Ryder Richardson's husband Colin MacDougall will be sentenced today after he pleaded guilty to charges relating to health and safety breaches at the couple's west Wales wildlife park.
Ms Ryder Richardson was cleared of two safety breaches following an incident in which a young boy was seriously hurt when a tree branch fell on him and his mother.
Colin MacDougall pleaded guilty to four charges in court last Monday - two in his own name and two on behalf of the company, Manor House Wildlife Ltd, which the couple own together.