The utilization of phytochemically enriched diets,
particularly those supplemented with seaweed extracts, has gained attention in
aquaculture for enhancing fish growth and health. This study was conducted to
determine the haemato-physiological response of Nile Tilapia (Oreochromis
niloticus, Linnaeus 1758) fed with phytochemically enriched formulated diets.
This was carried out for 90 culture days using four treatments where three out
of four were seaweed-supplemented diets (Kappaphycus alvarezii, Ulva lactuta,
Sargassum muticum). Treatments were distributed with the following: Treatment I
(Control), Treatment II (K. alvarezii), Treatment III (U. lactuta), and
Treatment IV (S. muticum). In the growth performance, Treatment I reached the
highest mean weight and length while lowest in Treatment IV. The highest mean
weight and length gain was also achieved by Treatment I and lowest in Treatment
IV. Survival rate was found highest in Treatment II and lowest in Treatment IV.
In the case of GSI and HSI, Treatment I achieved the highest values while
lowest in Treatment IV. The maximum SSI value was achieved by Treatment III
while it was least achieved by Treatment IV. In relation to condition factor,
Treatment IV classified as fair fish, while the rest of the Treatments attained
the excellent condition. In the gonadal development, 27.27% are at Stage I
(Immature) while 38.64% are at Stage II (Maturing I), 20.45% Stage III
(Maturing II) and 13.64% reached the Stage IV (Mature). With regards to the
haematological response, Treatment III had the highest count of White Blood
Cells while lowest in Treatment II. In Red Blood Cells, hemoglobin was least
counted in Treatment IV, while hematocrit found least in Treatment I. Treatment
I had the highest count of platelet while lowest in Treatment IV. The physico-chemical
parameters of water such as temperature and pH fell within the tolerable limits
for O. niloticus culture. The result of the study shows that seaweed
extract-supplemented diets has no significant effect to the growth of fish
within 90 days culture period. Thus, it is highly recommended to use a higher
dosage of the same species of seaweed and/or use other species.
Author(s) Details:
Jaynos R. Cortes,
College of Forestry, Agriculture, and Aquatic Sciences, North
Eastern Mindanao State University – Lianga Campus, Lianga, Surigao del Sur,
Philippines and Center of Research for Aquamarine Life Sustainability (CoRALS),
North Eastern Mindanao State University– Lianga Campus, Lianga, Surigao del
Sur, Philippines.
John Arman P. Tenio,
College of
Forestry, Agriculture, and Aquatic Sciences, North Eastern Mindanao State
University – Lianga Campus, Lianga, Surigao del Sur, Philippines.
Heldiegardis B. Amista,
College of Forestry, Agriculture, and Aquatic Sciences, North
Eastern Mindanao State University – Lianga Campus, Lianga, Surigao del Sur,
Philippines.
Jonamie C. Cortes,
College of Forestry, Agriculture, and Aquatic Sciences, North
Eastern Mindanao State University – Lianga Campus, Lianga, Surigao del Sur,
Philippines.
Limuel N. Idjao,
College of Forestry, Agriculture, and Aquatic Sciences, North
Eastern Mindanao State University – Lianga Campus, Lianga, Surigao del Sur,
Philippines.
Please see the link here: https://stm.bookpi.org/RACAS-V6/article/view/14202
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