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DC Field | Value | Language |
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dc.contributor.author | Orina Paul Sagwe | - |
dc.contributor.author | Rasowo Joseph | - |
dc.contributor.author | Gichana Elijah | - |
dc.contributor.author | Maranga Benard | - |
dc.contributor.author | Charo - Karisa Harrison | - |
dc.date.accessioned | 2018-10-29T12:38:42Z | - |
dc.date.available | 2018-10-29T12:38:42Z | - |
dc.date.issued | 2013 | - |
dc.identifier.uri | http://www.fisheriesjournal.com/archives/2014/vol1issue6/PartC/147.pdf | - |
dc.identifier.uri | http://ir.mu.ac.ke:8080/xmlui/handle/123456789/2079 | - |
dc.description.abstract | Broodstock were collected by use of an electro - fisher from four rivers; Mara, Migori, Nyando and Yala and transported to KMFRI Sangoro hatchery for spawning. They were subjected to a 3 x 2 x 4 factorial des ign (3 temperatures x 2 ovaprim dosages x 4 populations) with 72 treatments (3 replicates per treatment) in aquaria flow through system. Each replicate in every population were subjected to 22± 1°C, 26± 1°C and a control (no temperature regulation). Two ovaprim dosages (0.2 and 0.5 mlkg - 1) administered to female brooders. Latency pe riod significantly (p < 0.05) varied among treatments but remained the same among populations. There was no significant difference (p > 0.05) in latency period between the two ovaprim dosages (0. 2 and 0.5 mlKg - 1). However, temperature had a significant (p < 0.05) effect on the spawning time, brooders under 26±1 °C responded at 6 - 8 h, those under 22±1 °C responded at 12 - 18 h and the controls responded at 16 - 18 h. Fecundity significantly (p < 0.05) depended on fish size and river source. Mean fertilization an d hatching rate were both dependent on temperature with temperature of 26±1 °C being the best performer for all populations. Ovaprim dosage had no effect on ovulation. Larval survival was directly dependent on temperature with 26±1 °C having the highest la rval survival (89%), while the control had the least survival (67%) but not significantly different from temperature 22±1 °C (71%). Yolk sac reabsorption was not s ignificantly related to the population source and ovaprim dosage but was directly related to temperature with temperature 26±1 °C having the shortest time (18 - 24 h) post hatching. Results indicate that ovaprim dosage of 0.2 mlKg - 1 and water temperature of 26±1 °C provides the optimal L. victorianus breeding conditions in captivity. | en_US |
dc.language.iso | en | en_US |
dc.publisher | International Journal of Fisheries and Aquatic Studies | en_US |
dc.relation.ispartofseries | ;International Journal of Fisheries and Aquatic Studies 2014; 1( 6 ): 138 - 143 | - |
dc.subject | Labeo victorianus | en_US |
dc.subject | Latency period | en_US |
dc.subject | Ovaprim | en_US |
dc.subject | Temperature | en_US |
dc.subject | Survival | en_US |
dc.title | Artificial Breeding Protocol and Optimal Breeding Environment for Labeo victorianus (Boulenger, 1901) | en_US |
dc.type | Article | en_US |
Appears in Collections: | School of Biological and Physical Sciences |
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