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17/8/2003 - Thanh ha - Khanh Hoa - Toi nuoi tom o vung co day ao loai dat set, tom co mau trang, khi thu hoach gia tom mau trang bi giam 2-3 gia so voi tom mau xanh. Truoc khi thu hoach Toi da gay tao (mau xanh) cho that dam nhung tom van khong doi mau. Xin Viet Linh vui long chi giup co cach nao de chuyen mau trang cua tom thanh mau khac de khi ban khoi phai mat gia.

Doi voi nhieu truong hop khi nuoi tham canh, tom co mau nhat hoac trang, nguyen nhan do thieu mot so loai sac to de chuyen hoa thanh mau tu nhien cua tom. O nuoc ngoai thuong co che pham tron them vao thuc an de tang cuong sac to cho tom nuoi (Carophyll Pink co chua 8% astaxanthin). Trong truong hop o VN, co the tang cuong gay mau dam, ket hop thuc an cong nghiep tieu chuan va de muc nuoc sau (1,2-1,4m) co the se loai tru duoc truong hop thieu sac to nay.