no sir, what is it?

Evaluating Whole Cottonseed as a Supplemental Feed for Deer
Sarah L. Bullock, David G. Hewitt, Kim C. McCuistion, Randy L. Stanko, Michael K. Dowd, Don A. Draeger, and Jimmy Rutledge
An increasing number of white-tailed deer managers are looking for alternative supplements that provide the same benefits as a pelleted feedstuff. Whole cottonseed has moderate-to-high content of protein, energy, and fiber, and it may be a viable supplement for white-tailed deer. Gossypol, a toxic pigment within the cottonseed plant, reduces intake by non-target animals, but is of concern because of its ability to reduce fecundity and induce toxicosis when consumed in high amounts.
Our objectives are to (1) evaluate the health and production of captive white-tailed deer on a diet of up to 50% whole cottonseed, (2) evaluate digestibility and utilization of whole cottonseed by white-tailed deer, (3) develop a regression model relating cottonseed consumption to plasma gossypol concentration in captive deer, and (4) use this captive deer regression model to determine consumption of cottonseed by wild deer by measuring their plasma gossypol levels.
Preliminary data suggest overall health and production of white-tailed deer is not compromised by diets of up to 30% whole cottonseed. However, deer appeared to limit intake of diets containing 50% cottonseed. Wild-caught deer exhibited plasma gossypol concentrations indicating over 90% had eaten cottonseed. Results of this project will help managers make informed decisions about using cottonseed as a supplement for white-tailed deer.
Cooperative funding was provided by the Comanche Ranch and T. Dan Friedkin.

I'm using cracked peas this year. Picking them up at a local coop for $6.50 per hundred pounds. They have 18% - 20% protein. They flow through the feeders as good if not better than pellets. Only drawback is they are not bagged so you have to use bulk bag to transport. Little more labor intensive but well worth the savings.

There is 2 sides to the cootonseed feeding, this one against it. Many studies have been done by the likes of Texas Tech and Texas A M. There is no concrete evidence supporting either as bad or good. In the mix you will of course find the reviews against and for.