This study was conducted to evaluate the effect of different levels of dietary supplementation of Saccharomyces cerevisiae on growth performance, feed utilization and body biochemical composition of Oreochromis niloticus fingerlings. Four diets containing supplementation at levels of 0, 0.5, 1 and 2 g kg−1 were fed to fingerlings of Nile tilapia (5.01±0.21 g) in four replicate tanks twice ...

It is generally accepted that feed intake and growth (gain) are the most important economic components when calculating profitability in a growth test or feedlot. We developed a single post-weaning growth (feedlot) index based on the economic values of different components. Variance components, heritabilities and genetic correlations for and between initial weight (IW), final weight (FW), feed ...

We determine the coupling characteristics of a large mode area (LMA) photonic crystal, single-mode fiber when fed with an on-axis field lens used to place an image of the telescope exit pupil at the fiber input. The maximum field of view is found to be approximately the same as that of feeding the fiber directly with the telescope PSF in the image plane. However, the field lens feed can be used...

A robust nonlinear control law is designed to reject unknown feed composition disturbances with overall stability. Implementation to real columns as well as comparisons with classical control strategies, show the robustness and flexibility improvements of the method. Almtracq-Using singular perturbation techniques on a physical model of distillation column, an aggregated model is proposed for c...

This work demonstrates a microwave dual band bandpass filter using two L–shaped stepped impedance resonators (SIRs) and a coupled feed structure. The coupled feed structure can be a single sided or a double sided structure. Two sets of physical parameters are used to control the coupling coefficient and external quality factor. Thus, the specification, such as the central frequencies and the ba...

There are indications that progress in litter size may be increasing as programmes put more emphasis on reproduction traits and the use of BLUP with minimal inbreeding becomes more widespread. While growth rate, lean growth and feed conversion continue to show significant progress there is some evidence that selection against backfat is decreasing as programmes switch emphasis towards reproduct...

This paper represents a method to improve the SNR and linearity of an integrator by feedback compensation technique. The discussed design reduces signal swing while keeping advantages of both feed-forward as well as feedback topology without changing the signal transfer function. SNR and linearity are related to the output of an integrator. Reduced SNR and non-linearity resulted because of the ...

an experiment was conducted to evaluate the effect of feed restriction (fr) and meal feeding (mf) on performance, carcass characteristics and related parameters to ascites in ross 308 male broiler chickens. five dietary treatments were 1) the control (ad libo. feeding), 2 )feed restriction from 7 to 14 days (fr14), 3) feed restriction from 7 to 21 days (fr21), 4) meal feeding from 7 to 14 days ...

A method is described for the simultaneous monitoring of four short chain fatty acids (SCFA) (lactic, acetic, propionic and butyric acid), two mono-saccarides (fructose and glucose) and ethanol in liquid feed for pigs and liquid feed fermented with lactic acid bacteria. The method involves a simple extraction technique, with average recoveries between 83 and 98%. Determination and quantificatio...

This article presents design and fabrication methodology of Ku Band (linearly polarized) reconfigurable patch antenna. Both bulk and surface micromaching techniques are implemented on patch to have better RF performances. Reconfigurability is implemented by integrating shunt capacitive switch with microstrip patch antenna. Effect of feed mechanisms and role of micromachining on antenna paramete...