in this study, the effects of oxygen supplementation in different stocking densities of rainbow trout (oncorhynchus mykiss) on the specific growth rates (sgr), feed conversion ratios (fcr) and survival rates were investigated in a commercial-scale culture system. high density cultures were maintained in a total of nine (12 m3) flow-through systems supplemented with o2. initial stocking rates fo...

two studies were conducted to evaluate the correlation between growth performance of chicks fed full fat soybean (ffsb) extruded at 145, 155 and o 165 and laboratory quality tests. in biological study, one hundred and forty four d-old male broiler chicks were divided into 12 groups including 3 treatments with 4 replicates of 12 chicks each and fed three diets containing 15 % ffsb extruded at 14...

In this study the enrichment dietary effect with different crude protein levels (CP) and feed additives on growth, survival, conversion ratio (FCR), consumption (FC) total hemocyte count (THC) in juvenile white shrimp Litopenaeus vannamei were evaluated. The covered two bioassays: first one, juveniles daily fed for 45 days four experimental diets containing: (1) Control, commercial (35% CP); (2...

Net feed conversion efficiency (NFCE) describes whether an animal eats more or less feed than expected for its size and growth rate. Early results from the Trangie NFCE Project, and from the Beef CRC, show that considerable variation in NFCE exists within each of the British breeds tested and is moderately heritable. Estimates of heritability for average daily gain, 365-day weight, feed intake,...

this present study was conducted to evaluate the effects of dietary inclusion of 4, 8 and 12 g kg-1 phytogenic feed additives mixture on performance, egg quality, ovary parameters, serum biochemical parameters and yolk trimethylamine level in laying hens. the results of experiment have shown that egg weight was increased by supplementation of 12 g kg-1 feed additive whereas egg production, feed...

In this study, the effect of xylanase and cellulase supplementation in palm kernel meal (PKM) based diet on growth performance, volatile fatty acids (VFAs) and the caecal bacterial populations of broiler chickens were investigated. Seventy five day old male Cobb broiler chicks were randomly allocated to three dietary treatment groups receiving T1 (20% PKM-based diet without enzyme), T2 (20% PKM...

The development of the poultry industry in last years demanded evaluation different broiler chicken strains order to improve production efficiency and welfare, considering physiological livability parameters. Thus, present study aimed compare growth performance three (Lohmann, Hubbard Ross). All birds were fed a similar standard commercial diet ad libitum, separately allocated treatment groups....

AIM The study was for assessment of growth performance, nutrient utilization, and feed efficiency in broilers fed rations with varying levels of Tithonia diversifolia leaf meal (TDLM) as a substitute of conventional feed ingredients in Mizoram. MATERIALS AND METHODS A total of 180, 1-day-old broiler chicks were randomly divided into six homogeneous groups and fed rations incorporated with TDL...