Poodineh Pir, H. (2019) Effect of the chitosan on growth performance, hematological parameters, survival and resistance against to salinity and temperature stress in Ctenopharyngodon idella Juvenils. Masters thesis, University of Zabol.
|
Text
Effect of the chitosan on growth performance,.pdf Download (103kB) | Preview |
Abstract
Grasshopper (Ctenopharyngodon idella) is an important and marketable carp species, and chitosan is one of the most suitable growth stimulator prebiotics in carps. Therefore, in the present study, the effect of chitosan probiotic on growth, survival and immunity of Ctenopharyngodon idella Juvenil's for 56 days in a control treatment and three experimental treatments under the influence of prebiotics (1, 2.5 and 5 g/kg of diet) with 3 repetitions were examined. In each replicate, 20 fish were weaned with an mean weight of (21.28±0.092) for 8 weeks with experimental diets. Feeding with experimental rations was carried out on the basis of a maximum of 3% of live weight at two times per day. The results showed that chitosan had a significant effect on the growth performance of Ctenopharyngodon idella, so that final weight, final length, biomass and specific growth rate of grass carp was increased by chitosan increase, and its highest value was observed in fish fed with ration containing 5 g chitosan. The highest amount of condition factor also was obtained in fish fed with ration containing 1 and 5 g per kg chitosan. But with the increase in chitosan, the feed conversion ratio of Ctenopharyngodon idella decreased. Chitosan had a significant effect on white blood cells, hematocrit, hemoglobin and intracellular hemoglobin, and red blood cells in blood serum of grass carp. Chitosan reduces the number of white blood cells, hematocrit and Intracellular hemoglobin (MCH). The number of red blood cells decreased in fish fed with ration containing 1 and 2.5 g chitosan and increased in fish fed with ration containing 5 g chitosan. Chitosan had a significant effect on blood serum enzymes, so that the lowest levels of spartat aminotransferase (40.33 ± 2.08) and lactate dehydrogenase (818.68 ± 1.53) and the highest alkaline phosphatase (302.33 ± 2.52) was observed in fish fed with ration containing 2.5 g chitosan. Chitosan increased the resistance of wild boar to counteract the stress of temperature, but reduced salt stress in countering stress. It can be concluded that the complementary role of chitosan in the development of Ctenopharyngodon idella is positive, so that it can improve its growth indices and the best effective dose is 5 g per kg of food. Therefore, it is recommended to use this food supplement at reproduction and restocking centers of Ctenopharyngodon idella.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Chitosan, Growth increase, Leukocyte, Salinity stress, Ctenopharyngodon idella |
| Subjects: | S Agriculture > SH Aquaculture. Fisheries. Angling |
| Depositing User: | Mrs najmeh khajeh |
| Date Deposited: | 25 Jun 2019 04:40 |
| Last Modified: | 25 Jun 2019 04:40 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/2476 |
Actions (login required)
 |
View Item |
