Single-screw extrusion modeling effects on extrusion processing parameters and physical properties of DDGS-based Nile tilapia (Oreochromis niloticus) feeds

2011 ◽  
Author(s):  
Ferouz Y Ayadi ◽  
Parisa Fallahi ◽  
Kasiviswanathan Muthukumarappan ◽  
Kurt A Rosentrater
Keyword(s):  
Physical Properties ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Processing Parameters ◽  
Single Screw ◽  
Single Screw Extrusion ◽  
Extrusion Processing ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Screw Extrusion

scholarly journals Modeling Single-Screw Extrusion Processing Parameters and Resulting Extrudate Properties of DDGS-Based Nile Tilapia (Oreochromis niloticus) Feeds

2013 ◽  
Vol 2 (2) ◽  
pp. 11 ◽  
Author(s):  
Ferouz Y. Ayadi ◽  
Parisa Fallahi ◽  
Kurt A. Rosentrater ◽  
Kasiviswanathan Muthukumarappan
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Soybean Meal ◽  
Nile Tilapia ◽  
Processing Parameters ◽  
Expansion Ratio ◽  
Fractional Factorial ◽  
Processing Conditions ◽  
Font Size ◽  
Single Screw

<span style="font-family: Times New Roman; font-size: small;"> </span><p class="MsoNoSpacing" style="margin: 0in 0in 0pt; line-height: 115%;">A single-screw laboratory extruder was used to conduct an L<sub>18</sub> (2<sup>2</sup><sup> </sup>´ 3<sup>6</sup>) Taguchi fractional factorial study of aquafeed processing. The ingredients were based on a formulation for nutritionally-balanced Nile tilapia diets containing distillers dried grains with solubles (DDGS) and soybean meal as the main protein sources, in addition to constant amounts of corn flour, whey, and fishmeal. The effects of three levels of DDGS (20, 30 and 40%), soybean meal (30, 40 and 50%), ingredient moisture content (20, 30 and 40% db), screw speed (100, 150 and 200 rpm), die dimension (L/D ratios of 5, 9 and 13), barrel temperature (80-100-100°C, 80-120-120°C and 80-140-140°C) and two levels of screw configuration (compression ratios of 2:1 and 3:1) on extrudate physical properties (moisture content, water activity, bulk density, unit density, expansion ratio, pellet durability index, water absorption and solubility indices, water stability, color) and extruder processing parameters (resulting temperatures, die pressure, extruder torque, mass flow rate, apparent viscosity, and specific mechanical energy) were determined. Data from raw materials, processing conditions, and extrudate properties were used to develop surface response curves and equations. However, predominantly low R<sup>2</sup> values (&lt; 0.5) only permitted linear relationships between some independent parameters and response variables. Regarding main effects, die pressure significantly decreased with higher DDGS levels, moisture content, temperature, lower die L/D, and higher screw compression. Expansion ratio decreased significantly with higher moisture content and lower die L/D. Significant differences in color were caused by changes in DDGS levels and moisture content. In summary, DDGS, moisture content, die dimension, and extrusion conditions had the biggest impact on most of the extrudate physical properties and processing conditions. Different combinations of these independent factors can be used to achieve desired extrudate physical properties and processing conditions.</p><span style="font-family: Times New Roman; font-size: small;"> </span>

Single-Screw Extrusion Processing of Distillers Dried Grains with Solubles (DDGS)-Based Yellow Perch (Perca flavescens) Feeds

2011 ◽  
Vol 88 (2) ◽  
pp. 179-188 ◽  
Author(s):  
Ferouz Y. Ayadi ◽  
Kasiviswanathan Muthukumarappan ◽  
Kurt A. Rosentrater ◽  
Michael L. Brown
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Single Screw ◽  
Distillers Dried Grains ◽  
Single Screw Extrusion ◽  
Extrusion Processing ◽  
Screw Extrusion

Effect of DDGS, Moisture Content, and Screw Speed on Physical Properties of Extrudates in Single-Screw Extrusion

2008 ◽  
Vol 85 (2) ◽  
pp. 132-139 ◽  
Author(s):  
Nehru Chevanan ◽  
Kurt A. Rosentrater ◽  
Kasiviswanathan Muthukumarappan
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Screw Speed ◽  
Single Screw ◽  
Single Screw Extrusion ◽  
Screw Extrusion

Characterization of Francisella noatunensis subsp. orientalis isolated from Nile tilapia Oreochromis niloticus farmed in Lake Yojoa, Honduras

2019 ◽  
Vol 133 (2) ◽  
pp. 141-145 ◽  
Author(s):  
E Soto ◽  
K Shahin ◽  
JJ Talhami ◽  
MJ Griffin ◽  
A Adams ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Nile Tilapia Oreochromis Niloticus

The effect of vaccination in controling bacterial disease caused by Aeromonas hydrophila in nile tilapia (Oreochromis niloticus)

2014 ◽  
pp. 27
Author(s):  
Arne A Ratulangi ◽  
Reiny Tumbol ◽  
Hengky Manoppo ◽  
Henneke Pangkey
Keyword(s):  
Survival Rate ◽  
Aeromonas Hydrophila ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Bacterial Disease ◽  
Immersion Method ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Different Ages ◽  
Motile Aeromonas Septicaemia

This study aims to apply vaccination against bacterial disease. The purpose of vaccination is to trigger the immune respone both non-specific and specific of fish against bacteria Motile Aeromonas Septicaemia (MAS) caused by Aeromonas hydrophila. The vaccination for fish with different ages: 2-3 weeks and 5 weeks were done using immersion method. The fish were re-vaccinated (booster) after two weeks of the first vaccination. The survival rate was < 50 % for juveniles 2-3 weeks and > 50% for juveniles 5 weeks. Survival rate for juveniles 5 weeks was higher than juveniles of 2-3 weeks. This shows that organs of juveniles of 5 weeks were more complete than the 2-3 weeks juveniles. The age of fish is one of the important factors for successfully vaccination. Penelitian ini bertujuan untuk melakukan penerapan vaksinasi terhadap penyakit bakterial. Vaksinasi ditujukan untuk merangsang respon kekebalan non- spesifik dan spesifik pada tubuh ikan terhadap penyakit Motile Aeromonas Septicaemia (MAS) yang disebabkan oleh bakteri Aeromonas hydrophila. Vaksin diberikan pada benih ikan nila yang berbeda umur yaitu 2-3 minggu dan 5 minggu dengan menggunakan metode perendaman. Ikan divaksinasi ulang (booster) setelah 2 (dua) minggu dari vaksinasi yang pertama. Prosentase kelangsungan hidup < 50 % untuk benih umur 2-3 minggu dan > 50% untuk benih umur 5 minggu. Jumlah kematian benih umur 2-3 minggu lebih tinggi dari 5 minggu. Hal ini menunjukkan bahwa fungsi organ benih umur 5 minggu telah lebih lengkap dari pada benih umur 2-3 minggu. Umur ikan merupakan salah satu faktor penting penentu keberhasilan suatu kegiatan vaksinasi.

Effect of low temperature on genomic DNA methylation in Nile tilapia (Oreochromis niloticus)

2013 ◽  
Vol 37 (10) ◽  
pp. 1460 ◽  
Author(s):  
Huaping ZHU ◽  
Maixin LU ◽  
Zhanghan HUANG ◽  
Fengying GAO ◽  
Xiaoli KE ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Low Temperature ◽  
Oreochromis Niloticus ◽  
Genomic Dna ◽  
Nile Tilapia ◽  
Nile Tilapia Oreochromis Niloticus
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