Effect of Vitex trifolia, Strobilanthes crispus and Aloe vera Supplement on Growth Performance and Disease Resistant of Red Hybrid Tilapia (Oreochromis sp.) against Streptococcus agalactiae Sharifah Raina Manaf (1), Hassan Mohd Daud (2), Nora Faten Afifah Mohamad (3), Mohd Ihwan Zakariah (4), Salwati Baharudin (1), Nur Asha Shahira Zamri (1), Hilal Anshary (5)
(1) Faculty of Plantation and Agrotehcnology, Universiti Teknologi MARA (UiTM) Cawangan Sarawak, Kampus Mukah, K.M 7.5, Jalan Oya, 96400 Mukah, Sarawak, Malaysia
(2) Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
(3) Universiti Putra Malaysia Bintulu Sarawak Campus, Nyabau Road, 97008 Bintulu, Sarawak, Malaysia
(4) Higher Institution Centre of Excellence, Institute of Tropical and Aquaculture and Fisheries (AKUATROP), University Malaysia Terengganu (UMT), 21030 Kuala
Nerus, Terengganu, Malaysia
(5) Universitas Hasanuddin, Makassar, Indonesia
Abstract
The output of tilapia, a popular fish that is mass-produced throughout the world and had a market value of USD 11.2 billion in 2018, was 6.03 million metric tonnes (Miao and Wang, 2020). A 45-day experimental trial was conducted to assess different levels of dietary Vitex trifolia (VTE), Strobilanthes crispus (SCE) and Aloe vera (AVE) supplementation on growth performance and disease resistant of fry Oreochromis sp. This study is to evaluate the growth performances, disease resistance and histology of fish supplemented with different concentrations of herbal supplements. The results revealed a significant impact showed VTE-7 is the best growth promoter and SCE-5 is the best for disease prophylaxis used as supplements in Oreochromis sp. In fish treated with this herbal supplementation, RBC, Hb, and WBC were increased (P<0.05) for haematological assays, whereas alanine aminotransferase (ALT) and alkaline phosphatase (ALP) were significantly affected. A histopathological analysis of the organs showed no detrimental tissue consequences. This study concluded that when added to the daily diet of Oreochromis sp., methanolic extracts of an herbal mixture made up of V. trifolia, S. crispus and A. vera extracts were efficient as growth promoters and bacterial disease treatments.
