How do I correctly say that during my industrial training at the livestock unit, A pig gave birth to 7 piglets. A vaccine was administered to the piglets (how many days after birth do they administer iron supplement to the piglets?)

You could say: "During my industrial training at the livestock unit, a pig gave birth to seven piglets. The piglets were administered a vaccine to ensure their health. Iron supplements are typically given to piglets around 3 to 7 days after birth to prevent anemia." Feel free to adjust the wording to fit your style!