DIGESTIBILITY DETERMINATION IN NILE CATFISH FINGERLINGS USING INTERNAL AND EXTERNAL MARKERS | ||
| Veterinary Medical Journal (Giza) | ||
| Volume 41, Issue 3, July 1993, Pages 83-91 PDF (4.4 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/vmjg.1993.377254 | ||
| Author | ||
| TALAAT SHAHAT* | ||
| National Institute of Oceanography and Fisheries, Egypt, Cairo, 101 Kaser El-Aaey Street | ||
| Abstract | ||
| Digestibility trials were conducted to compare the use of one external dietary marker (Chromic case) and (two natural internal dietary markers (crude fiber and acid-insoluble ash) for the estimation of apparent protein and energy digestibility in catfish Clarias lazera. The faecal samples were collected daily by filtering the water from the stomach and from the rectum at the end of each trial. A 5-day, 6 treatments were received essentially ingredient diets (Yellow corn, wheat bran, soya bean meal, cottonseed meal, fish meal and meat meal). The data showed that the highest digestion values for protein and energy were reached by using (Cr203) followed by (A-I-A), but the lowest values were obtained when using CF Also the data showed that there were no significant differences (P < 0.05) in digestibility coefficients of protein and energy when using different faeces collection methods, except for meal which was high by estimates depending on faecal samples obtained from the rectum. This may be due to their high of fiber Content. | ||
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