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Erturk, M.Mustafa,Sevgili, Huseyin Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.9
This study examined the replacement of the fish meal (FM) with commercial poultry by-product meal (PBM) in practical diets for rainbow trout (Onchorynchus mykiss, Walbaum). Five isocaloric and isonitrogenous diets containing levels 0 (control), 10, 20, 30 and 40% of PBM as a replacement for FM were fed to three replicate groups of rainbow trout with a initial weight $34.50{\pm}0.43g$ (mean${\pm}$SE). Protein efficiency ratio (PER) of diets containing PBM up to 20% were similar to the control while significantly lower values were obtained from the groups receiving higher levels of PBM (p<0.05). Apparent protein digestibility coefficients (ADCs) were significantly lower than that of the control group when PBM was included at level of 20% or more. Similarly, significantly lower values were observed with diets containing 30 and 40% PBM in terms of dry matter, organic matter, ether extract, ash and energy digestibility (p<0.05). Dietary treatments did not significantly affect the body composition of the fish in terms of dry matter, crude protein, ether extract and ash. In conclusion, PBM in a proportion of 20% may replace about 40 % of FM in rainbow trout diet without significant impairment grow.
Rıza Atav,Öner Gündüz,Sercan Yaz,Gizem Çakan,Bahadırhan Sevgili 한국섬유공학회 2023 Fibers and polymers Vol.24 No.8
Today, sustainable production has become an important concept. As the trends in the world bring about the widespread use of used-looking clothes, it has become mandatory to apply processes such as spray rodeo, which is the process done by spraying permanganate with a special spray gun or applying it with a brush to the desired area. However, permanganate has risk of causing irritation to the face and eyes, and cough, mucosal irritations, shortness of breath, etc. Therefore, it is of great importance to replace permanganate with clean alternatives. In this study, it was aimed to obtain high bleaching efficiency via laser-activated organic bleaching process and thus to obtain permanganate-like results in a sustainable way. It was found that the effects of organic bleaching agent concentration and pixel time on the degree of color fading are statistically significant and the optimum color fading could be achieved at 30% bleaching agent concentration and 300 μs pixel time. However, the bleaching agent concentration and/or pixel time can be changed according to the desired degree of color fading. Results indicated that by using laser-activated organic bleaching process, it is possible to obtain nearly same color fading effects with that of permanganate bleaching, which means a cleaner alternative has been developed.