Growth promoters generally should not be used in animals intended for?

Growth promoters, which are substances used to enhance the growth rate and feed efficiency of livestock, can have significant effects on an animal's physiology and development. These substances may alter hormonal balances or cause changes in growth patterns that are not desirable in animals intended for breeding.

In breeding animals, the goal is to produce offspring that meet certain genetic and health standards. The use of growth promoters can introduce variables that impact the genetic viability or overall health of future generations. High levels of growth promotion may lead to unintended consequences, such as mutations or the propagation of undesirable traits. Additionally, certain growth promoters may affect reproductive functions or the quality of gametes, which can compromise breeding success.

Using growth promoters in animals bred for specific roles could also raise ethical concerns and regulatory issues, particularly regarding food safety and the transmission of substances through meat or milk to consumers. Therefore, avoiding the use of growth promoters in breeding animals is crucial to maintaining genetic integrity and ensuring healthy progeny.