Alfalfa hay which is higher in protein or "hotter" as we who grow hay or have dairy animals call it than other hays. It is usually the first through third cuttings that make the "cut" so to speak. Dairy producers like to see the test number hit around 53 to 55 percentage of TDN. TDN is total digestible nutrients and is usually made up of a fine stemmed leafy product. And Brett because he had been growing since he could walk is a master at this. So much so that this year the hay from his second cutting second year field was a thicker stem and yet my picky goats ate every last bit of it. Goats aren't big fans of thick stemmed hay.
Goats picky? Don't goats eat everything? Sorry to burst the goat bubble but no they don't . The best way I can explain goat behavior is when there is something new to them they like every good toddler (even the adults) give it a good going over with their lips. They don't have opposing thumbs friends so that is the only way they can check it out. And on occasion it goes down the hatch. Not because they consider the object of their curiosity a food souce but because their lip smacking gets the best of them. In 31 years of goat keeping it has been my experience that unless a goat is starving they will stay pretty much to their regular diet.
So much in fact I once had a Nubian doe that would dance through her grain bowl with her tongue and deliberately leave every piece of rolled corn in the bowl. Flag was not a big fan of corn apparently.