scholarly journals Some Biological Observations on Rearing Juveniles of Nile Tilapia (Oreochromis niloticus (Linnaeus, 1758)) in Fixed Cages at Gezira Irrigation Canals, Sudan

2021 ◽  
pp. 1-7
Author(s):  
Sana Yagoub Abdallah Tahir ◽  
Abdalla Gadain Alnaiem ◽  
Egbal Osman Ahmed
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Fish Growth ◽  
Quality Analysis ◽  
Irrigation Canal ◽  
Irrigation Canals ◽  
Final Body Weight ◽  
Effect Of Water

This study was conducted at Gezira Irrigation canal to evaluate the growth performance and the effect of water tempetrature to the culture ability of Nile tilapia juveniles for 120 days. Monosex Oreochromis niloticus sized 8.17±0.33 g were carried out from Mabroka fish farm and stocked in 400 m³ fixed cages at a density of 50 fish/m³. Fish were fed daily with a commercial pellet diet with 33% protein concentration at a feeding rate of 3% of their body weight per day. Feed was given twice a day (09:00 morning and 16:00 evening). Fish growth parameters, water quality analysis have measured every two weeks. The final body weight of fish was 40.23±1.04 grams and the mean daily gained weight was 0.29 g/day, while the survival rate of fish was 99.7%±6.7 and the Food Conversion Ratio (FCR) was 3.8. The average value of temperature, pH and transparency were 23°C, 7.5, 31.5 cm respectively. The results of the study revealed that there is a possibility to culture tilapia juvenile at stocking density of 50/m³ in fixed cages in Irrigation Canals, for the effect of water temperature on fish growth performance the results obtained that no more effect on fish growth during study period.

scholarly journals Potential use of green algae Caulerpa lentillifera as feed ingredient in the diet of nile tilapia Oreochromis niloticus

2017 ◽  
Vol 16 (2) ◽  
pp. 195
Author(s):  
Nadisa Theresia Putri ◽  
Dedi Jusadi ◽  
Mia Setiawati ◽  
Mas Tri Djoko Sunarno
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Performance Test ◽  
Feed Utilization ◽  
Raw Material ◽  
Fish Diet ◽  
Feed Ingredient ◽  
Final Body Weight ◽  
Caulerpa Lentillifera

<p class="NoParagraphStyle"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle"><em> </em></p><p class="NoParagraphStyle">The high composition of import raw material of fish diet in Indonesia causes feed price expensively and should be replaced using local materials such as green macro algae. It is, therefore, this study aimed to evaluate effect of diet containing the <em>Caulerpa lentillifera</em>, as feed ingredient in the diet of Nile tilapia <em>Oreochromis niloticus</em>. This study consisted of two experiments which were <em>C. lentillifera </em>digestibility test for raw material feed for tilapia and growth performance test of tilapia. <em>C. lentillifera </em>digestibility test was done by using Cr<sub>2</sub>O<sub>3</sub> as indicators and analysis of faecal tilapia. The second experiment is growth performance test using a completely randomised design with four diets were formulated at variuos rates of <em>C. lentillifera</em> meal of 0 (control), 10, 20, and 30%. A number of 240 tilapia fingerlings of 3.41±0.10 g in mean weight were randomly stocked in 12 aquaria and fed on diet test for growth performanced of rearing period. <em>C. lentillifera</em> digestiility test result showed a good value as a raw material feed tilapia, the digestibility of <em>C. lentiliifera</em> and protein digestibility amounted to 68.81% and 86.31%. Growth performance parameters showed the use of 10% and 20% is not significantly different from the control (P&gt;0.05), to the final body weight, protein efficiency ratio, protein retention, specific growth rate, and feed efficiency. But, the diet test at 30% performed the lowest growth performance and feed utilization as well of tilapia fingerlings. This study, therefore, concludes that <em>C. lentillifera</em> meal could be used up to 20% in the tilapia diet.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Keywords: <em>Caulerpa lentillifera</em>, Nile tilapia, feed utilization, growth performance</p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong>ABSTRAK</strong><strong></strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle">Tingginya jumlah bahan baku impor dalam pakan ikan di Indonesia menyebabkan harga pakan yang tinggi dan harus diganti menggunakan bahan alternatif lokal seperti makro alga. Penelitian ini bertujuan untuk mengkaji pengunaan dari pakan yang mengandung <em>Caulerpa lentillifera </em>sebagai bahan baku pakan ikan nila <em>Oreochromis niloticus</em>. Tahapan penelitian terdiri atas uji kecernaan <em>C. lentillifera</em> sebagai bahan baku dan uji kinerja pertumbuhan ikan nila. Metode uji kecernaan menggunakan Cr<sub>2</sub>O<sub>3</sub> sebagai indikator pakan dan analisis feses ikan nila. Tahap penelitian kedua adalah kinerja pertumbuhan menggunakan rancangan acak lengkap dengan pakan diformulasikan dengan inklusi 0 (kontrol), 10, 20, dan 30% tepung <em>C. lentillifera</em>. Ikan nila sebanyak 240 ekor, dengan berat rata-rata 3,41±0,1g dibagi kedalam 12 akuarium dan diberi pakan perlakuan untuk melihat kinerja pertumbuhan. Hasil uji kecernaan <em>C. lentillifera</em> menunjukkan nilai yang baik sebagai bahan baku pakan ikan nila, yaitu kecernaan bahan sebesar 68,81% dan kecernaan protein sebesar 86,31%. Parameter kinerja pertumbuhan menunjukkan perlakuan penambahan 10% dan 20% tepung <em>C. lentillifera</em> tidak berbeda nyata (P&gt;0,05) dengan kontrol, yang terdiri atas: bobot tubuh akhir, pertumbuhan mutlak, protein efisiensi rasio, retensi protein, laju pertumbuhan spesifik dan efisiensi pakan. Namun, pakan perlakuan 30% menghasilkan kinerja pertumbuhan dan efisiensi pakan yang lebih rendah pada ikan nila. Penelitian ini memberikan hasil, penggunaan tepung <em>C. lentillifera</em> dapat digunakan sampai 20% dalam pakan ikan nila. </p><p class="NoParagraphStyle">  </p><p>Kata kunci: <em>Caulerpa lentillifera</em>, nila, pemanfaatan pakan, kinerja pertumbuhan</p>

scholarly journals Usage of Moringa olifera seed cake as food for Oreochromis niloticus fingerlings.

2018 ◽  
pp. 9-15
Author(s):  
Abdel Raheam H. A. A. El-Bassir
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Growth Performance ◽  
Wheat Bran ◽  
Dietary Protein ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Body Weight Gain ◽  
The Body ◽  
Seed Cake

The study was conducted to determine the suitability of Moringa olifera seed cake as a protein source for Oreochromis niloticus fry. It is concluded that Moringa olifera seed cake can be used as a dietary protein in Nile tilapia fry without significant reduction in growth performance. The body weight gain ranged from 50.91 to 85.17 gm within three weeks. Fry fed a mixture of Moringa olifera seed cake and wheat bran (1:1) had better growth performance than those on wheat bran only.

scholarly journals Evaluation of corn steep powder as a protein source for feed of Nile tilapia Oreochromis niloticus

2021 ◽  
Vol 20 (2) ◽  
pp. 115-129
Author(s):  
Dodi Hermawan ◽  
Muhammad Agus Suprayudi ◽  
Dedi Jusadi ◽  
Alimuddin Alimuddin ◽  
Julie Ekasari
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Protein Source ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Dry Matter Digestibility ◽  
Feed Digestibility ◽  
Randomized Design ◽  
Study Results

This study was aimed to evaluate the use of corn steep powder (CSP) as a plant protein source in Oreochromis niloticus diet. A commercial feed with 28% protein content and 368 kcal/g energy was used as reference diet, while the test feed consisting of various CSP content, namely 0%, 10%, 20%, and 30% and feed containing soybean meal (SBM) at the level of 20% and 30%. Tilapia were used in the trial with the initial body weight of 6.44 ± 0.29 g, and reared for thirty days in the aquarium at the density of fifteen and fed 3 times daily at a satiation level. All diets were supplied by 0.5% of Cr2O3 as an indicator for digestibility measurement. This study applied the completely randomized design experimental method containing six diet treatments and four replications. The result showed that CSP contains 40.27% protein, 26.10% lactic acid, and minerals. CSP is low in crude fiber and anti-nutritional factors. This study results that increasing the level of CSP significantly decreased feed acidity (P <0.05) compared to the control. The addition of CSP 20% increased feed digestibility including protein, lipid, energy, and dry matter digestibility. CSP 20% treatment increased final body weight, specific growth rate and reduced feed conversion ratio significantly (P<0.05) compare to other treatments. In conclusion, CSP can be used up to 20% to improve the growth performance of tilapia.   Keyword: corn steep powder, feed digestibility, growth performance, tilapia   ABSTRAK   Penelitian ini bertujuan mengevaluasi penggunaan corn steep powder (CSP) sebagai sumber protein nabati pada pakan ikan nila Oreochromis niloticus. Pakan komersial dengan kadar protein 28% dan energi 368 kkal/g digunakan sebagai pakan acuan, sementara pakan uji terdiri atas pakan dengan kandungan CSP sebanyak 0% (CSP0), 10% (CSP10), 20% (CSP20) dan 30% (CSP30) serta pakan dengan kandungan tepung bungkil kedelai (SBM) pada level 20% (SBM20) dan 30% (SBM30) sebagai pembanding. Penambahan Cr2O3 0,5 % diberikan sebagai indikator untuk mengukur kecernaan. Ikan nila dengan bobot tubuh rata-rata 6.44 ± 0.29 dipelihara dalam akuarium (95×45×45 cm3) yang diisi air 100 L dengan kepadatan 15 ekor per akuarium dan diberi pakan tiga kali sehari secara at satiation selama 30 hari masa pemeliharaan. Penelitian ini menggunakan desain rancangan acak lengkap dengan enam perlakuan dan empat ulangan. Hasil penelitian menunjukkan bahwa CSP mengandung protein sebesar 40,27%, asam laktat 26,10%, beberapa mineral dan indeks asam amino esensial 0,90. CSP juga rendah serat kasar dan zat antinutrisi. Peningkatan dosis CSP menurunkan pH pakan secara signifikan (P<0.05) dibandingkan dengan kontrol. Penambahan CSP sampai level 20% meningkatkan nilai kecernaan total, kecernaan bahan, kecernaan protein, kecernaan lemak dan kecernaan energi. Di samping itu, perlakuan CSP 20% meningkatkan bobot akhir, laju pertumbuhan harian dan rasio konversi pakan yang signifikan (P<0,05) dibandingkan perlakuan lainnya. Hasil penelitian ini menunjukkan bahwa pemberian CSP 20% dapat meningkatkan kinerja pertumbuhan ikan nila.   Kata kunci: corn steep powder, kecernaan pakan, pertumbuhan, ikan nila

Evaluation of use effective microorganisms (EM) with different feeding strategies on growth performance, body chemical composition and economic efficiency of monosex Nile tilapia Oreochromis niloticus juveniles

2021 ◽  
Vol 34 ◽  
pp. 21
Author(s):  
Mohamed F. Abdel-Aziz ◽  
Yaseen A. Abdel-Tawwab ◽  
Mohamed F. Sadek ◽  
Abdel Moneim M. Yones
Keyword(s):  
Chemical Composition ◽  
Growth Performance ◽  
Economic Efficiency ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Basal Diet ◽  
Feed Utilization ◽  
Fish Growth ◽  
Feeding Strategies ◽  
Effective Microorganisms

A factorial trial was conducted to detect the effect of different feeding strategies of supplementation of effective microorganisms (EM) liquid on the growth performance, feed utilization, body chemical composition and economic efficiency of monosex Nile tilapia (Oreochromis niloticus) juveniles. Three experimental treatments were formulated a basal diet without any addition of EM (control; A), a diet supplemented with 2% EM (B), and a diet supplemented with 4% EM (C). All treatments were offered to fish through two different strategies of feeding the meal: 2/3 in the morning and 1/3 in the afternoon or 1/3 in the morning and 2/3 in the afternoon. Each treatment was replicated three times. Juveniles Nile tilapia with an average initial body weight of 3.85 ± 0.22 g (± SE) were randomly stocked at a rate of 90 juveniles per 1.5 m3 tank. Fish growth performance and feed utilization significantly (P ≤ 0.05) increased with increasing EM supplementation and were positively affected by different feeding strategies. Moreover, the economic evaluation showed that there were more benefits by when using the 4% EM diet and feeding 2/3 of daily meal in the morning.

scholarly journals Antibiotic accumulation, growth performance, physiologic status and intestinal flora diversification of Nile tilapia (Oreochromis niloticus) feed by diets supplemented with different dose of sulfamethoxazole

2021 ◽  
Author(s):  
Longxiang Fang ◽  
Xi Chen ◽  
Xiangbao Shan ◽  
Liping Qiu ◽  
Limin Fan ◽  
...  
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Biological Diversity ◽  
Intestinal Flora ◽  
Short Chain Fatty Acids ◽  
Exposure Dose ◽  
Fish Growth ◽  
Blank Group ◽  
Safe Level

Abstract Background Sulfamethoxazole (SMZ) is an antibiotic used globally to treat fish disease in aquaculture, but the effects of exposure to legal aquaculture doses of SMZ in fish are still unclear. To comprehensively investigate the effects of exposure to legal doses of sulfamethoxazole (SMZ) in Nile tilapia (Oreochromis niloticus), fish were exposed to diets supplemented with different doses of SMZ (blank group, normal feed; LS, 0.67 g/kg; MS, 6.67 g/kg and HS, 33.33 g/kg) for 4 weeks. General SMZ accumulation, growth performance, physiologic status, intestinal and hepatic health were systemically evaluated. Results The exposure experiment indicated that the SMZ accumulation in O. niloticus muscles, intestinal and aquaculture environment were positively related to the exposure dose. And withdrawal of antibiotics feed after 4th week, the SMZ residual in fish muscles, aquaculture water and sediment gradually decreased to safe level. LS and MS amount of antibiotics promoted the growth of fish accompanied by reduced feed coefficient in treated groups, while the fish growth in HS group was retarded. Exposure of O. niloticus to SMZ also increased the content of TG, promoted liver hypertrophy, and increased number of fat particles in liver. Antibiotics changed the content of intestinal short-chain fatty acids (SCFAs), and the changes in acetic acid were the most obvious. SMZ exposure reduced the biological diversity of the intestinal flora subsequently induced microbiota dysbiosis, and the degree was positively related to the exposure doses, and the experimental mainly inhibiting the growth of Fusobacteria. Conclusions Overall, exposure to of fish to legal doses of SMZ impair general physiological functions, intestinal flora and provokes health risk in fish. This study highlights the importance of rational and regulated use of SMZ in aquaculture.

Pengaruh Pemberian Limbah Feses Sapi dan Probiotik sebagai Bahan Pembuatan Pakan Pelet terhadap Pertambahan Berat Badan Ikan Nila Hitam (oreochromis niloticus)

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Mulyadi Sagala ◽  
M. Aman Yaman ◽  
Dzarnisa Dzarnisa
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Oreochromis Niloticus ◽  
Feed Efficiency ◽  
Nile Tilapia ◽  
Feed Consumption ◽  
Research Station ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Pellet Feed

Abstark. Penelitian ini telah dilakukakan di Station Riset II Ie Seum, UPT. University Farm, Universitas Syiah Kuala, Aceh Besar. Penelitian berlangsung selama 90 hari, mulai tanggal 22 Mei sampai 14 Agustus 2016. Tujuan dari penelitian ini ialah untuk memanfaatkan limbah feses sapi sebagai pakan alternatif pengganti pakan pelet pabrikan, mengurangi produksi pakan yang tinggi dalam budidaya ikan Nila, dan dalam hal ini memacu pertambahan berat badan ikan Nila. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan terdiri dari 4 ulangan. Perlakuan pemberian subsitusi dari pakan komersial dengan pakan pelet organik sebanyak 0, 10, 20 dan 30%. Parameter yang diamati dalam penelitian ini adalah berat badan, pertambahan berat badan, konsumsi pakan, efisiensi pakan, konversi pakan, kelansungan hidup, pH dan suhu air. Pemberian subtitusi pakan komersial dengan pakan pelet organik berpengaruh sangat nyata (P0,01) terhadap semua parameter yang diamati, yaitu berat badan, pertambahan berat badan, konsumsi ransum, efisiensi ransum, dan konversi ransum. Dari hasil penelitian dapat disimpulkan bahwa subtitusi pakan komersial dengan pakan pelet organik 10-20% dapat digunakan untuk memacu laju pertumbuhan ikan Nila hitam.  Effect of Feeding Cow Waste and Probiotics Feed Manufacturing Natural Materials as for Added Weight of Black Nile Tilapia Fish (Oreochromis Niloticus)Abstract. Research has been dane in Research Station II Ie Seum, UPT. University Farm, Syiah Kuala University, Aceh Besar. The was conducted for 90 days, starting on May 22 until August 14, 2016. The purpose of this study was to use waste as feed for cow dung cost and promote the growth and production of Nile Tilapia. This research used completely randomized design (CRD) with 4 treatments and each replication. The treatment was subtitution of commercial diets with organic pellt feed (OPF) with the level of 0, 10, 20, and 30%, respeetively. The parameters observed were final weight, weight gain, feed consumption, feed efficiency, feed conversion, mortality/ life sustainability, pH and water temperature. Results study shwed that feeding organic pellet feed highly significant (P 0.01) affeted on all parameters, sach as final body weight, body weight gain, feed consumption, feed efficiency, and the feed conversion. The results of the study concluded that feeding organic pellet feed with a percentage of 10-20% was betterfor the growth rate of Nile Tilapia

scholarly journals Effect of Garcinia kola seeds supplemented diet on growth performance and gonadal development of Oreochromis niloticus juveniles breed in ponds

2019 ◽  
Vol 22 (1) ◽  
Author(s):  
Paulin Nyadjeu ◽  
Jeannette Angoun ◽  
Ngwasiri Pride Ndasi ◽  
Minette Eyango Tabi-Tomedi
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Gonadal Development ◽  
Normal Diet ◽  
Control Fish ◽  
Chemical Parameters ◽  
Final Body Weight ◽  
Garcinia Kola ◽  
Physico Chemical

Abstract Background Despite the favorable geo-climatic potential of Cameroon, the national production of tilapia remains low due to poor tilapia growth reported by fish farmers. One of the underlying reasons is the early female maturation at a very small size and precocious breeding in earthen ponds, resulting in overpopulation which leads to stunted growth and therefore to the production of unmarketable fish size. Studies have shown that dietary supplementation of G. kola enhanced growth in young Clarias gariepinus and Oreochromis niloticus. It was also reported that G. kola inhibited spawning in Tilapia adult females. Therefore, this study sought to assess the effects of Garcinia kola as growth promoter and inhibitor of gonadal development in young Oreochromis niloticus. Methods A total of 108 juveniles weighing 13.32 ± 0.62 g were randomly distributed in 9 hapas of 12 fishes each (9 females and 3 males) and fed for 70 days with three isonitrogenous diets, 40% crude protein with increasing Garcinia kola supplementation levels of 0 (normal diet), 6% and 10% (experimental diets). Physico-chemical parameters of the water (temperature, dissolved oxygen, pH, nitrate, nitrite, ammonia, and transparency) were measured twice a week. Every 14 days, fish were harvested, counted, and weighed. At the end of the experiment, three fish of each sex per replicate were sacrificed and their gonad and liver collected and weighed. Data were statistically analyzed using one-way analysis of variance repeated measure followed by Newman-Keuls multiple tests. Results The results showed that all physico-chemical parameters of the water were within the recommended values for Tilapia culture. Tilapia fed 6% Garcinia kola supplemented diet displayed higher final body weight in males (38.60 ± 3.50 g) and females (36.77 ± 3.62 g) compared to those receiving normal diet (36.23 ± 1.36 g and 25.87 ± 3.32 g; respectively to the final body weight in males and females). The gonadosomatic index and hepatosomatic index indicated no significant variation in males while in females, these were significantly low in the experimental fish compared to control fish. Conclusion The results of this study demonstrated that supplementation of G. kola seeds in diets of young Tilapia improved growth performance and impaired gonadal development in females.

scholarly journals Potential use of green algae Caulerpa lentillifera as feed ingredient in the diet of Nile tilapia Oreochromis niloticus

2017 ◽  
Vol 16 (2) ◽  
pp. 184
Author(s):  
Nadisa Theresia Putri ◽  
Dedi Jusadi ◽  
Mia Setiawati ◽  
Mas Tri Djoko Sunarno
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Performance Test ◽  
Feed Utilization ◽  
Raw Material ◽  
Fish Diet ◽  
Feed Ingredient ◽  
Final Body Weight ◽  
Caulerpa Lentillifera

<p class="NoParagraphStyle"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle"><em> </em></p><p class="NoParagraphStyle">The high composition of import raw material of fish diet in Indonesia causes feed price expensively and should be replaced using local materials such as green macro algae. It is, therefore, this study aimed to evaluate effect of diet containing the <em>Caulerpa lentillifera</em>, as feed ingredient in the diet of Nile tilapia <em>Oreochromis niloticus</em>. This study consisted of two experiments which were <em>C. lentillifera </em>digestibility test for raw material feed for tilapia and growth performance test of tilapia. <em>C. lentillifera </em>digestibility test was done by using Cr<sub>2</sub>O<sub>3</sub> as indicators and analysis of faecal tilapia. The second experiment is growth performance test using a completely randomised design with four diets were formulated at variuos rates of <em>C. lentillifera</em> meal of 0 (control), 10, 20, and 30%. A number of 240 tilapia fingerlings of 3.41±0.10 g in mean weight were randomly stocked in 12 aquaria and fed on diet test for growth performanced of rearing period. <em>C. lentillifera</em> digestiility test result showed a good value as a raw material feed tilapia, the digestibility of <em>C. lentiliifera</em> and protein digestibility amounted to 68.81% and 86.31%. Growth performance parameters showed the use of 10% and 20% is not significantly different from the control (P&gt;0.05), to the final body weight, protein efficiency ratio, protein retention, specific growth rate, and feed efficiency. But, the diet test at 30% performed the lowest growth performance and feed utilization as well of tilapia fingerlings. This study, therefore, concludes that <em>C. lentillifera</em> meal could be used up to 20% in the tilapia diet.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Keywords: <em>Caulerpa lentillifera</em>, Nile tilapia, feed utilization, growth performance</p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong>ABSTRAK</strong><strong></strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle">Tingginya jumlah bahan baku impor dalam pakan ikan di Indonesia menyebabkan harga pakan yang tinggi dan harus diganti menggunakan bahan alternatif lokal seperti makro alga. Penelitian ini bertujuan untuk mengkaji pengunaan dari pakan yang mengandung <em>Caulerpa lentillifera </em>sebagai bahan baku pakan ikan nila <em>Oreochromis niloticus</em>. Tahapan penelitian terdiri atas uji kecernaan <em>C. lentillifera</em> sebagai bahan baku dan uji kinerja pertumbuhan ikan nila. Metode uji kecernaan menggunakan Cr<sub>2</sub>O<sub>3</sub> sebagai indikator pakan dan analisis feses ikan nila. Tahap penelitian kedua adalah kinerja pertumbuhan menggunakan rancangan acak lengkap dengan pakan diformulasikan dengan inklusi 0 (kontrol), 10, 20, dan 30% tepung <em>C. lentillifera</em>. Ikan nila sebanyak 240 ekor, dengan berat rata-rata 3,41±0,1g dibagi kedalam 12 akuarium dan diberi pakan perlakuan untuk melihat kinerja pertumbuhan. Hasil uji kecernaan <em>C. lentillifera</em> menunjukkan nilai yang baik sebagai bahan baku pakan ikan nila, yaitu kecernaan bahan sebesar 68,81% dan kecernaan protein sebesar 86,31%. Parameter kinerja pertumbuhan menunjukkan perlakuan penambahan 10% dan 20% tepung <em>C. lentillifera</em> tidak berbeda nyata (P&gt;0,05) dengan kontrol, yang terdiri atas: bobot tubuh akhir, pertumbuhan mutlak, protein efisiensi rasio, retensi protein, laju pertumbuhan spesifik dan efisiensi pakan. Namun, pakan perlakuan 30% menghasilkan kinerja pertumbuhan dan efisiensi pakan yang lebih rendah pada ikan nila. Penelitian ini memberikan hasil, penggunaan tepung <em>C. lentillifera</em> dapat digunakan sampai 20% dalam pakan ikan nila. </p><p class="NoParagraphStyle">  </p><p>Kata kunci: <em>Caulerpa lentillifera</em>, nila, pemanfaatan pakan, kinerja pertumbuhan</p>

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