Received: 30-10-2012
Accepted: 22-12-2012
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Xác định độ tiêu hóa của một số nguyên liệu thực vật đối với cá trắm cỏ (Ctenopharyngodon idella)
Keywords
Cám gạo, bột ngô, bột sắn, độ tiêu hóa, trắm cỏ
Abstract
Nghiên cứu này nhằm mục đích xác định độ tiêu hóa của cá trắm cỏ (Ctenopharyngodon idella) đối với 3 loại nguyên liệu là cám gạo, bột ngô và bột sắn. Việc xác định độ tiêu hóa của các dưỡng chất trong các nguyên liệu có nguồn gốc thực vật được thực hiện theo phương pháp gián tiếp có sử dụng chất đánh dấu Cr2O3. Cám gạo cho kết quả cao về độ tiêu hóa vật chất khô (80,3%), protein (87,9%) và chất khoáng (97,4%). Tương tự bột ngô cũng cho kết quả khá cao về độ tiêu hóa vật chất khô (88,9%), protein (84.9%) và chất khoáng (92,7%). Không có sự khác biệt có ý nghĩa thống kê khi so sánh độ tiêu hóa các dưỡng chất của cám gạo và bột ngô đối với cá trắm cỏ. Độ tiêu hóa chất khô, protein và chất khoáng của bột sắn lần lượt là 80,3%, 87,9% và 14,3% và thấp hơn so với của cám gạo và bột ngô. Kết quả bước đầu này cho thấy cá trắm cỏ tiêu hóa cám gạo và bột ngô tốt hơn bột sắn.
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