The control of Salmonella in chicken offal based feed for hybrid catfish (female Clarias macrocephalus X male C. gariepinus) | |
| Author | Amorn Luengnaruemitchai |
| Call Number | AIT Thesis no. AQ-01-22 |
| Subject(s) | Catfishes--Feeding and feeds Salmonella |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of , Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AQ-01-22 |
| Abstract | Two feeding trials were conducted to compare Salmonella contamination, growth performance, body composition and economic efficiency of hybrid Clarias catfish (female C. macrocephalus x male C. gariepinus) fed pelleted feed (PF), chicken intestine (CI) and boiled chicken intestine (BCI) for 60 days. In the experiments I and II, fifty hybrid catfish (mean weight 124.5 g) were stocked in each of 12 concrete tanks and of 6 cages installed in an earthen pond. Results from the experiment I showed that the mean weight and length, weight gain, daily weight gain and specific growth rate were higher (P<0.05) in the catfish fed CI than PF but there was no significant (P>0.05) differences between catfish fed CI and BCI. The results of experiment II showed weight gain, specific growth rate and yield were significantly (P<0.05) higher in catfish fed Cf than catfish fed PF. Hybrid catfish fed CI gave better FCR but poorer PER than catfish fed PF. Higher (P<0.05) percentage carcass lipid was found in catfish fed CI (36%) over and above that of catfish fed PF (25%). However, carcass lipid of catfish fed BCI was not significantly (P>0.05) different from the catfish fed CI and PF. Body protein, moisture and ash were not affected by the experimental diets. Catfish treatments PF and BCI in the uncontaminated water of experiment I were free from Salmonella infection, however those fish fed CI were usually Salmonella carriers. In treatment 4 of the catfish fed CI became Salmonella carriers during initial during initial 3 0-day CI feeding. It was seen that Salmonella were still present even after the fish of this treatment were fed PF during the final 30-day. In experiment II, the presence of Salmonella the cages fed PF showed that Salmonella infection is transmitted via water. Most treatments failed economically except that catfish fed chicken intestine cultured in the cage-in-pond was economically positive (17.70 baht/cage). |
| Year | 2001 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AQ-01-22 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Aquaculture and Aquatic Resources Management (AQ) |
| Chairperson(s) | Yakupitiyage, Amararatne; |
| Examination Committee(s) | Lin, C. Kwei;Yi, Yang; |
| Scholarship Donor(s) | Asian Institute of Technology- Partial Scholarship ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2001 |