Corn is a high energy grain (more kcal per kg or cal per lb than other feedstuffs). Therefore, as the grain is digested, more heat is released. Whether it really makes much of a difference in body temperature during hot weather is probably an old wives tale. The majority of starter/grower/laying rations is corn and they would consume a much higher amount of corn via these rations than they would from the cracked corn given as scratch.
The biggest problem with feeding a corn-based scratch in hot weather is that because of the high calorie count, the hens will eat LESS laying ration thus putting them in a protein deficient state. While corn is high in energy (calories) it is relatively low in protein. During hot weather, it would be better to provide a lower energy scratch (oats, barley) to ensure proper intake of laying ration.
So, the recommendation of not feeding corn as scratch in hot weather is good...it's just not for the reason that most say.
The biggest problem with feeding a corn-based scratch in hot weather is that because of the high calorie count, the hens will eat LESS laying ration thus putting them in a protein deficient state. While corn is high in energy (calories) it is relatively low in protein. During hot weather, it would be better to provide a lower energy scratch (oats, barley) to ensure proper intake of laying ration.
So, the recommendation of not feeding corn as scratch in hot weather is good...it's just not for the reason that most say.
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