In the first paragraph, the author explains the amount of cows Japan and most European nations test, making the reader recognize that there is a sense of accomplishment for those specific countries and nations. But when the author moves on to paragraph two, the transition used is the word "But". This immediately makes the reader think that there is an under-lying problem or there is a downside to the facts before this paragraph.
Organization is the pattern you use to present your idea and support. There is no single way to present ideas. You must decide which organizational pattern best communicates your ideas. Poor organization can obscure good ideas.