Title | Effect of coconut oil levels on growth and reproduction performance of female Nile tilapia (Oreochromis niloticus L.) |
Publication Type | วิทยานิพนธ์/Thesis |
Year of Publication | 2017 |
Authors | Ricardo Jorge |
Degree | M.Sc. -- Major in Fisheries |
Institution | Faculty of Agriculture, Ubon Ratchathani University |
City | Ubon Rachathani |
Call Number | SH J82 2017 |
Keywords | Coconut Oil, Nile tilapia--Growth, Nile tilapia--Reproduction, น้ำมันมะพร้าว, ประสิทธิภาพในการสืบพันธุ์, ปลานิล |
Abstract | Effects of coconut oil (CO) levels on growth and reproduction performance of female Nile tilapia (Oreochromis niloticus L.) (average weight =m 14.57 ±0.96 g) were investigated after preparation of four experimental diets containing different levels of coconut oil 3% (35 ml/kg of CO), 6% (70 ml/kg of CO), 9% (105 ml/kg of CO) and 12% (140 ml/kg of CO). Fish dry were acclimatized for two months in cement tanks and later were stocked in 80L fiber tanks connected to aeration system where were fed with 3% of body weight of the referred experiment diet for 90 days. Growth performance (P>0.05) was evident on treatment at 6% CO of coconut oil showing higher weight gain (98.76±9.50 g) and average daily gain (0.80±0.04 g/day). There is no significant difference of reproductive parameter (P>0.05). The higher gonadosomatic index and egg diameter of individuals fed on 6% (2.80±1.76a % and 1.83 ±0.51a mm) and 12% (2.55±1.05ab % and 1.63±0.26ab mm) coconut oil was found. The greater absolute and relative fecundity (2284.88±272.57a eggs and 27.33±1.61a eggs/g female) were found in individuals fed on 3% coconut oil. Proximate analysis on dry matter basis of whole body was monitored (P>0.05). The greatest crude protein (55.18±0.98%) was found in treatment 6%. The higher nitrogen free extract was found in treatments fed on 6 and 12% coconut oil (3.67±0.26 and 2.81±0.08%) while the higher crude lipid exhibited in treatment fed on 9% coconut oil (29.14±1.70%). It may possible that the suitable concentration of coconut oil in fish feed can promote the reproductive performance of Nile tilapia female. |
Title Alternate | ผลของน้ำมันมะพร้าวต่อระบบสืบพันธุ์และการเจริญเติบโตของปลานิล |