This is the 8420th most frequent German word.
kastri
The word "kastri" does not exist in standard German. It may be a misspelling or a term from another language.
In this sentence, 'kastriere' is a verb form related to medically neutering an animal.
Ich kastriere meinen Hund aus gesundheitlichen Gründen.
I neuter my dog for health reasons.
Here, 'kastriert' is used as the past tense of the verb indicating a completed neutering procedure.
Der Tierarzt hat den Kater erfolgreich kastriert.
The veterinarian successfully neutered the tomcat.
In this sentence, 'kastrieren' is an infinitive form used to express the act of neutering an animal.