Nine Dutch Holstein bulls, imported from the United States, are in quarantine in São Paulo, Brazil, ready to begin semen collection at 12 months for breeding. This is part of Brazil's strategy to genetically improve its dairy herd by importing high-performance animals, as the country's current Holstein bulls are not yet genetically proven. From January 2023 to June 2024, Brazil imported semen from 664 bulls, predominantly from the United States, to nationalize genetic material and improve the national herd's characteristics such as milk production and productive life. The Ministry of Agriculture and Livestock (Mapa) oversees these importations, ensuring the health of the animals and the improvement of the national herd.