Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus

A 60-day feeding trial was conducted to assess the effects of processed meal from knife fish Chitala ornata (KFM) as fishmeal replacement in diets of Nile tilapia Oreochromis niloticus juveniles. Five iso-nitrogenous (36.4% in dry matter) and isolipidic diets (8.6% in dry matter) with 0 (D1), 25 (D2...

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Main Authors: Ragaza, Janice A, Abarra, Sherilyn T, Velasquez, Stephanie F, Guzman, Kristina Daniela D.C., Felipe, Jaime Lorenzo F, Tayamen, Melchor
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Published: Archīum Ateneo 2017
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Online Access:https://archium.ateneo.edu/biology-faculty-pubs/49
https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1051&context=biology-faculty-pubs
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spelling ph-ateneo-arc.biology-faculty-pubs-10512020-05-05T08:26:04Z Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus Ragaza, Janice A Abarra, Sherilyn T Velasquez, Stephanie F Guzman, Kristina Daniela D.C. Felipe, Jaime Lorenzo F Tayamen, Melchor A 60-day feeding trial was conducted to assess the effects of processed meal from knife fish Chitala ornata (KFM) as fishmeal replacement in diets of Nile tilapia Oreochromis niloticus juveniles. Five iso-nitrogenous (36.4% in dry matter) and isolipidic diets (8.6% in dry matter) with 0 (D1), 25 (D2), 50 (D3), 75 (D4) and 100% (D5) KFM inclusions were prepared. With a stocking density of 15 fish (0.59 ± 0.01 g) per tank, tilapia juveniles were distributed randomly in fifteen 30-L tanks. Results indicate a significant increase (P < 0.05) in the percent average weight gain, specific growth rate, and feed intake with increasing KFM inclusion up to the level of 75%. There were no adverse effects observed in both blood profile and carcass composition of the tilapia. Hepatosomatic index of fish significantly increased (P < 0.05) when KFM was included into the diet of tilapia, compared to those fed D1. Viscerosomatic indices were not significantly different (P > 0.05) among treatments. Results of hepatic histopathology showed absence of tumors, lesions and parenchymal inflammation in all treatments. However, mild cell membrane lysis and mild and mild to moderate apoptosis were evident in liver samples. Based on the results, KFM can partially and completely replace dietary protein from fishmeal. Moreover, D4 (75% KFM) is considered the optimal KFM replacement level for Nile tilapia juveniles. 2017-02-01T08:00:00Z text application/pdf https://archium.ateneo.edu/biology-faculty-pubs/49 https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1051&amp;context=biology-faculty-pubs Biology Faculty Publications Archīum Ateneo Fishmeal replacement Growth performance Feed utilization Invasive species Knife fish Nile tilapia Aquaculture and Fisheries Biology
institution Ateneo De Manila University
building Ateneo De Manila University Library
continent Asia
country Philippines
Philippines
content_provider Ateneo De Manila University Library
collection archium.Ateneo Institutional Repository
topic Fishmeal replacement
Growth performance
Feed utilization
Invasive species
Knife fish
Nile tilapia
Aquaculture and Fisheries
Biology
spellingShingle Fishmeal replacement
Growth performance
Feed utilization
Invasive species
Knife fish
Nile tilapia
Aquaculture and Fisheries
Biology
Ragaza, Janice A
Abarra, Sherilyn T
Velasquez, Stephanie F
Guzman, Kristina Daniela D.C.
Felipe, Jaime Lorenzo F
Tayamen, Melchor
Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus
description A 60-day feeding trial was conducted to assess the effects of processed meal from knife fish Chitala ornata (KFM) as fishmeal replacement in diets of Nile tilapia Oreochromis niloticus juveniles. Five iso-nitrogenous (36.4% in dry matter) and isolipidic diets (8.6% in dry matter) with 0 (D1), 25 (D2), 50 (D3), 75 (D4) and 100% (D5) KFM inclusions were prepared. With a stocking density of 15 fish (0.59 ± 0.01 g) per tank, tilapia juveniles were distributed randomly in fifteen 30-L tanks. Results indicate a significant increase (P < 0.05) in the percent average weight gain, specific growth rate, and feed intake with increasing KFM inclusion up to the level of 75%. There were no adverse effects observed in both blood profile and carcass composition of the tilapia. Hepatosomatic index of fish significantly increased (P < 0.05) when KFM was included into the diet of tilapia, compared to those fed D1. Viscerosomatic indices were not significantly different (P > 0.05) among treatments. Results of hepatic histopathology showed absence of tumors, lesions and parenchymal inflammation in all treatments. However, mild cell membrane lysis and mild and mild to moderate apoptosis were evident in liver samples. Based on the results, KFM can partially and completely replace dietary protein from fishmeal. Moreover, D4 (75% KFM) is considered the optimal KFM replacement level for Nile tilapia juveniles.
format text
author Ragaza, Janice A
Abarra, Sherilyn T
Velasquez, Stephanie F
Guzman, Kristina Daniela D.C.
Felipe, Jaime Lorenzo F
Tayamen, Melchor
author_facet Ragaza, Janice A
Abarra, Sherilyn T
Velasquez, Stephanie F
Guzman, Kristina Daniela D.C.
Felipe, Jaime Lorenzo F
Tayamen, Melchor
author_sort Ragaza, Janice A
title Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus
title_short Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus
title_full Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus
title_fullStr Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus
title_full_unstemmed Replacement of fishmeal with processed meal from knife fish Chitala ornata in diets of juvenile Nile tilapia Oreochromis niloticus
title_sort replacement of fishmeal with processed meal from knife fish chitala ornata in diets of juvenile nile tilapia oreochromis niloticus
publisher Archīum Ateneo
publishDate 2017
url https://archium.ateneo.edu/biology-faculty-pubs/49
https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1051&amp;context=biology-faculty-pubs
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