Wooh, I am glad to here that fur baby will be going with family. It is really difficult to deal with some animal behaviors. And it sounds like you are blessed with a good family and them with you! Thank you for not responding in an ugly manor. I certainly understand having priorities and more stuff to do than 3 of me could accomplish in my whole life time.Well goodness lol. Yes our dog is a part of our family. We tried integrating him with our indoor dogs and they won't have it. He BROKE the entire fencing off the frame with bolts every 6 inches. I'm not sure how else to bolt a fence?? BUT our dog isn't just going to be ditched. Thanks. He will be going to live with my mother in law, who can bring him inside and give him more time and energy and doesn't have prey animals. He is deaf and he has predator instincts. I have a two year old and a farm to take care of. Excuse me for not being made of three people and endless energy. This was meant to be about my chicks, not my pup, but I promise, I have his best interests at heart.
I did also consider that a possibility. When I first got my 250w bulb and put it in the box and closed the lid a little (I was newer back then), I checked 10 minutes later and the chicks were freaked because it was 120 degrees in there! Then I realized that was as high as the thermometer went. I got luck that time. But you would probably notice them holding their wings out and panting. My first brooder didn't have enough space for a cool area and didn't realize I needed it. I think it hindered their feathering speed a little. I did end up going to 150w red bulb and then 100w regular as I was weaning them off heat.You should not be losing that many chicks. Your brooder set is likely the culprit and far too hot for them. If a small brooder you need little heat. A 60-75W incandescent bulb is more than sufficient for plastic totes. The idea is to only heat a part of the brooder, keep heat to one side so they have escape from it if too hot. With small brooders much attention to this detail is needed as heat lamps are far too much heat. If they are raised 2 ft in air to compensate then the entire brooder is same heat leaving no cooler area for birds to escape to. Listless chicks is symptom of too much heat.
Sounds like you have the best interest not only for the dog, but your whole family. That is not heartless or cold, that is Love!
Have a great day, and good luck to your family!