Developing monosex pearlspot, etroplus suratensis (bloch, 1790) using synthetic hormone (Record no. 28018)
| 000 -LEADER | |
|---|---|
| fixed length control field | 01776nam a22001217a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 639.3 |
| Item number | KAL/DE |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Kalapala Satvik |
| 245 ## - TITLE STATEMENT | |
| Title | Developing monosex pearlspot, etroplus suratensis (bloch, 1790) using synthetic hormone |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication | Panangad |
| Name of publisher | KUFOS |
| Year of publication | 2019 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 65p. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Etroplus suratensis (Bloch 1790) fries from the same brood were collected and reared at 15ppt salinity. The 30 days old fries with 0.01±0g weight and 0.96±0cm Length was used for the study. They were fed with 17α -Methyl Testosterone (MT) administrated feed to study the monosex production and growth. Commercial feed with38% protein and 9% lipid was used for incorporation of hormone. The hormone was thoroughly mixed with micro feed to achieve tested dosages of 0, 20, 40, and 60 mg/kg MT. The duration of the experiment was 60 days of which first 28 days hormone mixed feed was used. During the period of hormonal administration the fries were fed 6 times a day. The results showed significant difference in masculinization (P<0.05).Hormone administration showed in sex conversion with an average male population of 96.7% in 60mg dosage followed by 40mg with 80%. However the control gave almost the 1:1 ratio with 46% males. Growth didn’t show much variation between the treatment and had highest weight gain in T3 60mg/kg (1.48±0.22) followed by Control (1.18±0.17) and least observed from T1 20mg (1.11±0.13). The average survival rate was highest in Control 91.1% followed by T2 40mg 85.6%. The highest specific growth rate recorded of 8.91±0.04 in the treatment T3 60mg and lowest in T1 20mg/kg with 8.40±0.21.So, this study reveals the potential of producing all male pearlspot seed production and thereby increased growth and productivity. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Thesis |
| Withdrawn status | Lost status | Collection code | Home library | Current library | Shelving location | Date acquired | Full call number | Accession Number | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Reference | KUFOS Central Library | KUFOS Central Library | Thesis Shelf | 24/05/2019 | 639.3 KAL/DE | TH270 | Thesis |