Good Morning and welcome to Just answer. I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
I am so sorry to hear about Jenna. It is unlikely that this is being caused by the plants and fruits that she may be ingesting but the high amount of sugar could be causing her these problems. Her temperature is normal but this still could be a form of infection such as an acute upper respiratory infection common this time of year. This will not show any obvious respiratory signs because it is acute but make Jenna feel very bad. For now, the best thing to do id to give her Penicillin G daily. This can be purchased at the farm supply and the dose is on the bottle by weight. Then give her an electrolyte solution every 4 hrs by dosing with a dose syringe or turkey baster to keep her from becoming dehydrated. I would also recommend giving her mineral oil, 1 pint per 100 pounds every 4-6 hrs just in case this is the beginnings of a bloat.
Watch her for urinations and defecations and if this does not bring her around, you will have to have your vet examine Jenna to see if we have missed something.
Sincerely, XXXXX XXXXX
Hi again.. I failed to mention that we live in Australia, so we cant just go to our farm shop and buy Penicillin (wish we could) also every where we are reading it is telling us that avocados, cherries and plums are all deadly to goats. They both were out in the orchard maybe she ate some of the avocado leaves. If she did could this be causing her to be ill? She has been the same for 2 nights now and going into her 3rd day she is eating very little but is drinking water and water with electrolytes .