(plaintiff, Tennessee poultry farmer that entered into poultry production contract with defendant, claimed that defendant engaged in retaliatory conduct against plaintiff for plaintiff's participation in regional grower's association in violation of the Agricultural Fair Practices Act and that defendant violated the Packers and Stockyards Act by engaging in "unfair, discriminatory or deceptive practices"; plaintiff's claim dismissed - plaintiff failed to allege his involvement with an "association of producers" as required by AFPA, and failed to prove that defendant's conduct injured competition as required under 7 U.S.C. Secs. 192(a) and (b) and failed to even plead that defendant's conduct had an adverse effect on competition).