Final answer:
The Beltsville Small White turkey is an example of a breed developed for smaller carcasses, often referred to as a heritage breed. Heritage breeds contrast with larger commercial birds bred primarily for meat production.
Step-by-step explanation:
The question pertains to the production of turkey breeds with a focus on smaller carcasses. Specific breeds have been developed for various purposes, ranging from large birds for more meat to smaller ones for differently sized markets and culinary needs.
While the information provided does not mention a specific breed produced for smaller carcasses, in general, heritage breeds like the Beltsville Small White have been known for their more modest size in comparison to the broad-breasted varieties that are commonly found in supermarkets.
The heritage breeds are typically known for their ability to mate naturally and for their longer lifespans, potentially offering smaller carcasses compared to their commercial counterparts, which are selectively bred for size and rapid growth.