Yesterday i was playing a game against a guy on oasis. I saw the map and thought oh gosh ive lost already since there will be no decent animals to convert. But this was not so. I ended up doing something with conversion that was actually better than having a lot of animals in my army.
Early on in the game i visioned his base with the intent on knowing where his gold was so that i could anubite raid it later on. I did find all his resource gathering sites but i also found a rather large pack of zebras outside of his base. I thought there was no point in converting them since they suck in battle. However i had nothing else for my priest to do so i sent him over to convert them. I did have like 5 or 6 zebras in my base that i was hunting. However they were running low so i figured id send the zebras that id be converting over to the hunting site. So as it was i converted 6 zebras, a total of 900 food. Basically it benifited me just like great hunt would have if i was Odin. I got more hunting and zero walking time. This is important because gathering from chickens is slow so it speeded up my classical time at least 20 seconds. It also gave me more food before i needed farms up. This allowed me a very smooth conversion to farms.
So it helped me in a similar way to great hunt (although it actually added 900 more food compared to a max of 750 with great hunt). But this also hurt my opponent a lot. Basically i took away all of his hunting that he had. He was forced to use up a lot of his resources on farms very early meaning he had a smaller army and was VERY low on resources. Because of this i was able to do a lot of anubite raiding unharmed since he didnt have much of an army and the army he did have was tied up with my army and plague of serpents. I just played a game as thor where i basically had zero hunting near me and very little other food. I lost the game solely because of that. This was the situation this guy was in. He had no food and didnt realize that there wouldnt be any food so hadnt stockpiled wood enough to get farms. Because of this he had very little food because he could only afford to have like 4 vills on food, very little wood because he was using it all to build farms, and not too much gold since i was anubite raiding it. This all equated into a very small army which was easy to overwhelm.
I had a above average eco since my food vills never had to leave my base and i had a very steady conversion to farms. This meant that i was able to easily get to heroic, pump out a few siege towers, use ancestors and it was gg.
My point here is that on low food maps it can be very effective as set to steal all the enemies food and use it yourself. It won me the game.