Abstract: An orally ingestible contraceptive composition for a pig or rodent is provided. The exemplary composition comprises 0.005 to 1.4 wt. % free gossypol and non-free-gossypol matter. The non-free-gossypol matter comprises a bulk feed component, a pig attractant, a flavored component, or any combination thereof. An assembly may include an orally ingestible contraceptive composition for a pig or rodent and a package. A system for delivering an orally ingestible contraceptive composition to a pig or rodent may include the composition and an apparatus configured to permit pigs or rodents to eat the composition and inhibit other animals from eating the composition. A method for delivering an orally ingestible contraceptive composition to a pig or rodent includes making the composition available to the pig.

Abstract: An orally ingestible contraceptive composition for a pig is provided. The exemplary composition comprises 0.005 to 1.4 wt. % free gossypol and non-free-gossypol matter. The non-free-gossypol matter comprises a bulk feed component, a pig attractant, a flavored component or any combination thereof. In a second aspect, an assembly is provided. The assembly comprises an orally ingestible contraceptive composition for a pig and a package. In a third aspect, a system for delivering an orally ingestible contraceptive composition to a pig is provided. The system comprises the composition and an apparatus. The apparatus is configured to permit pigs to eat the composition and inhibit other animals from eating the composition. In a fourth aspect, a method is provided for delivering an orally ingestible contraceptive composition to a pig. The method comprises making the composition available to the pig.

Abstract: An additive for increasing the toughness of thin-wall iron castings is provided. The additive includes amounts of a non-ferrous metal oxide and a metal sulfide in which the non-ferrous metal has an affinity for oxygen less than that of iron, and the metal has an affinity for sulfur less than that of magnesium. The metals contained in the oxides and sulfides are also not alkali, alkali earth or rare earth metals to reduce the incidence of defect formation in the castings. The metal oxide and metal sulfide, when added to a cast iron melt react with magnesium added to the melt as a spheroidizing graphite element to form nucleation sites having a core of magnesium oxide surrounded by magnesium sulfide. These nucleation sites allow for increased nucleation of graphite, whether in vermicular or spheroidal form, such that the cross-section of the thin-wall iron casting is more uniform, thereby decreasing the amount of carbide formed in the casting and increasing the toughness of the casting.