Unlike his many of his contemporaries or successors – Grisone, Fiaschi, Pasquale Caracciolo, Claudio Corte, Pirro Antonio Ferraro, Giovanni Paolo d'Aquino, Paolo de' Pavari – who published treatises on various aspects of horsemanship, many of which were soon translated and circulated through much of Europe, Pignatelli never had any work published. A manuscript of his treatise on the veterinary care and treatment of the horse in the Bibliothèque Sainte-Geneviève in Paris was described in 1838. It was divided into three hundred and seventy-six chapters, and included sections on cures for parasites and disease, on bridling and on horse management. A manuscript with the title "L'arte veterale" is conserved in Verona; a transcription was published in 2001.