Transgenic animals are organisms that have been genetically modified to carry genes from other species, offering significant advancements in agricultural, pharmaceutical, and biomedical research. These animals are developed through techniques such as microinjection, viral vectors, or CRISPR-Cas9 gene editing to introduce desired genetic traits. In livestock, transgenic technology enhances disease resistance, growth rate, and product quality, such as milk composition or lean meat yield. In biomedical research, transgenic animals—particularly mice—serve as valuable models for studying human diseases, enabling the development of targeted therapies and vaccines.

Notably, transgenic goats and cows have been engineered to produce therapeutic proteins in their milk, offering a cost-effective platform for drug production. Despite these benefits, ethical considerations, regulatory challenges, and biosafety concerns remain central to the discourse on transgenic animal use. Continued research and responsible application are crucial for balancing innovation with animal welfare and public acceptance. This update underscores the growing relevance of transgenic animals in veterinary science and highlights their potential to revolutionize animal health and productivity.