Effect of some commercial feed additives on the structure of gonads and microbiology of Nile tilapia (Oreochromis niloticus) fish

2013 ◽  
Vol 17 (2) ◽  
pp. 47-62 ◽  
Author(s):  
Abdelhamid Abdelhamid ◽  
Mehrim I. ◽  
El-Barbary I. ◽  
El-Sharawy A.
2021 ◽  
Vol 12 ◽  
Author(s):  
Mohamed Ibrahim Kord ◽  
Tarek Mohamed Srour ◽  
Eglal Ali Omar ◽  
Ahmed Awny Farag ◽  
Abdel Aziz Moussa Nour ◽  
...  

Graphical AbstractThe immunostimulatory effects of commercial feed additives on growth performance, non-specific immune response, antioxidants assay, and intestinal morphometry of Nile tilapia, O. niloticus.


Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2266
Author(s):  
Shaimaa A. A. Ahmed ◽  
Ghada I. Abd El-Rahman ◽  
Amany Behairy ◽  
Rasha R. Beheiry ◽  
Basma M. Hendam ◽  
...  

In recent times, nutraceuticals have been used extensively to identify promising feed additives for the improvement of the aquaculture industry through the enhancement of growth and survival rates, potentiation of the immune responses, and fortification of the resistance against infectious bacterial diseases. In this study, Nile tilapia (Oreochromis niloticus) were fed with diets supplemented with quinoa seeds (QU) or prickly pear fruit peel (PP) at the dose levels of 10% or 20% of the diet. After 45 days of the feeding trial, the fish were exposed to Aeromonas sobria (A. sobria) challenge. The pre-challenge indices indicated that both supplements mediated a significant improvement in most of the estimated parameters, including survival rate, antioxidant status, hematological and immunological indices, and hepatoprotective potential. These effects were recorded in the groups fed with high doses of the supplements (20%). The least changes were observed in the QU10-supplemented fish. In the spleen tissue, the TGF-β gene was upregulated in the PP10-, PP20- and QU20-supplemented groups, while the expression of the IFN-γ gene remained unaffected in all the supplemented groups, except for the PP20-supplemented group, which showed an upregulation. After the challenge with A. sobria, the relative survival percentage was improved by the supplementation of PP and QU, particularly in the PP20-supplemented group, possibly via the promotion of immunological responses, hepatoprotective potency, and modulation of the studied genes. Moreover, the morphological structure of the tissues showed marked recovery. The findings suggest that Nile tilapia fed with different levels of PP peel and QU seeds, particularly at the level of 20%, enhanced the immune response in fish and improved their resistance against A. sobria infection.


2019 ◽  
Vol 10 (1) ◽  
pp. 28
Author(s):  
Elton R. Lauluw ◽  
Sartje Lantu ◽  
Henneke Pangkey ◽  
Cyska Lumenta ◽  
Revol D. Monijung ◽  
...  

Silage is prepared by adding the probiotic into the material of bones and flesh of waste from the market.  Silage is used as element substituted with fish meal as feed for tilapia with initial weight of 19.14 to 24.86 grams and a length of 3-5 cm.  There are three types of feed using silage replacing fish meal as much as 10% (treatment A), 20% (treatment B) and 30% (treatment C) and a control used commercial feed (treatment D).  The results obtained are feed in treatment D gives very significant results to the three other feed (A, B and C) in the case of weight, rate of growth and feed efficiency; but in a further test of Duncan, statistical results showed that feed C and D more efficient than feed A.Keywords: low cost artificial feed, silage, growth, tilapia ABSTRAKSilase dipersiapkan melalui penambahan probiotik ke dalam bahan tulang dan daging dari bahan-bahan yang tidak terpakai yang diambil dari pasar.  Silase ini digunakan sebagai elemen yang disubsitusikan dengan tepung ikan untuk diberikan sebagai pakan pada ikan nila dengan berat awal 19,14-24,86 gr dan panjang 3-5 cm.  Ada tiga jenis pakan dengan menggunakan silase menggantikan tepung ikan sebanyak 10 (perlakuan A), 20 (perlakuan B) dan 30% (perlakuan C) dan sebagai kontrol digunakan pakan komersial (perlakuan D). Hasil yang diperoleh adalah pakan uji pada perlakuan D sangat memberikan hasil berbeda yang sangat nyata dengan ketiga pakan lainnya (A, B dan C) dalam hal pertumbuhan berat, laju pertumbuhan dan efisiensi pakan; namun pada uji lanjut Duncan, hasil statistik menunjukkan bahwa pakan C dan pakan D lebih efisien dibandingkan pakan A.Kata kunci: akuakultur, pakan buatan murah, silase, pertumbuhan, ikan nila


2016 ◽  
Vol 2 (4) ◽  
pp. 178
Author(s):  
Sri Ramadhana ◽  
Noor Arida Fauzana ◽  
Pahmi Ansyari

Tujuan dari penelitian ini adalah untuk mengetahui efek pemberian probiotik yang mengandung Lactobacillus sp. dalam pakan komersial terhadap kualitas pakan, meningkatkan jumlah bakteri dalam mukosa usus dan kecernaan ikan melalui pemberian pakan probiotik yang ramah lingkungan, mengetahui dosis efektif probiotik dalam pakan yang dapat menunjang pertumbuhan ikan nila (Oreocromis niloticus). Penelitian ini dilaksanakan selama 6 (enam) bulan, mulai bulan September 2012 sampai Februari 2013. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap dengan 4 (Empat) perlakuan dan 3 (Tiga) ulangan, yaitu perlakuan A (Kontrol), B (Probiotik 3%), C (Probiotik 5%) dan D (Probiotik 7%).Hasil penelitian menunjukkan bahwa pemberian pakan dengan penambahan probiotik yang mengandung Lactobacillus sp. menggunakan dosis sebesar 3%, 5% dan 7% mampu meningkatkan kandungan gizi, pakan, dengan nilai protein antara 32,48%-34,19% dan menurunkan serat kasar dengan nilai antara 5,04%-5,70% dibandingkan tanpa pemberian probiotik. Pemberian probiotik dalam pakan dengan persentase 3%, 5%, dan 7% dapat meningkatkan kecernaan ikan nila pakan efektif untuk meningkatkan pertumbuhan berat dan panjang ikan nila.The purpose of this research was to determine the effect of probiotics in commercial feed on feed quality, enhance increase bactery number in gut mucose and digestibility of nile tilapia (Oreocromis niloticus) through the provision of environmental friendly probiotic feed, determine  the effective doses of probiotics infeed that can support the growth fish. The research was conducted for 6 (six) months, from September 2012 until February 2013. The design used in this study was completely randomized design with 4 (four) treatments and 3 (three) replicates, were treatment A (control), B (Probiotics 3%), C (Probiotics 5%) and D (Probiotic 7%).The results showed that the addition of probiotic containing Lactobacillus sp. feeding with doses of 3%, 5% and 7% were able to improve the nutritional content, protein values between 32,48%-34,19% and lower crude fiber with values between 5,04-5,70% compared with no probiotics. The addition of probiotics in feed with a percentage of 3%, 5%, and 7% can increase digestibility of nile tilapia and effective to increase the nile weight and length growth of nile tilapia.


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