THE EFFECTS OF FEED ADDITIVES BASED ON THE WASTES OF POULTRY PROCESSING ON THE PRODUCTIVE PERFORMANCE AND MEAT QUALITY IN BROILER CHICKS

The wastes of the slaughter and primary processing of poultry could potentially be used as animal protein sources for broilers. Feed additives based on these wastes can solve the problem of their utilization and offer an opportunity to save on the more expensive animal protein sources. As it known, by-products are the most valuable source of animal protein. Of particular interest are the feather and meat and bone residue.There are several ways to obtain hydrolysates. One of them is important for enzymatic hydrolysis.The study was financed by the Russian Science Foundation, grant No 17-16-01-028-P

THE EFFECTS OF FEED ADDITIVES BASED ON THE WASTES OF POULTRY PROCESSING ON THE PRODUCTIVE PERFORMANCE AND MEAT QUALITY IN BROILER CHICKS

The productive performance and meat quality were studied in broiler chicks fed diets supplemented with easily digestible animal derived protein additives produced by short-term intense thermal treatment and enzymatic hydrolysis of keratin- and collagen-containing wastes of slaughter and processing of poultry. The trial was performed on 4 treatments of Ross-308 broilers (50 birds per treatment, from 1 to 38 days of age). Control treatment was fed diet with fishmeal as animal protein source; in treatments 2 and 3 the fishmeal was substituted by enzymatic hydrolysate of feathers (keratin-containing wastes) with and without probiotic preparation, respectively; in treatment 4 the fishmeal was substituted by a mixture of enzymatic hydrolysates of feathers and collagen-containing wastes with probiotic preparation. It was found that average live bodyweight at slaughter age was higher in all experimental treatments in compare to control

Оценка своевременности выявления туберкулеза среди иностранных граждан Новосибирской области

The objective: assessment of timeliness and efficiency of organization of TB diagnostics among foreign citizens in Novosibirsk Oblast during the COVID-19 pandemic and related restrictive measures.Subjects and Methods. A retrospective descriptive cohort study was conducted, it included foreign citizens above 18 years old diagnosed with tuberculosis and detected in 2018-2021. Totally 348 patients were enrolled in the study: 192 patients detected in 2018-2019 and 156 patients detected in 2020-2021.Results. In the short-term assessment, the COVID-19 pandemic did not have a significant impact on the organization of detection of tuberculosis in foreign citizens in Novosibirsk Oblast, although there is a significant increase in the number of untimely detected patients with destruction. Nevertheless, the currently existing procedure for diagnostics of tuberculosis among foreign citizens requires significant improvement. Thus, coverage with preventive examinations concerns mainly legal labor migrants, while illegally working foreign citizens remain uncovered by screening for tuberculosis. When diagnosing tuberculosis, the minimum required laboratory tests are used which do not allow verifying the diagnosis bacteriologically and assessing drug susceptibility.Цель исследования: оценка своевременности и эффективности организации диагностики туберкулеза среди иностранных граждан на территории Новосибирской области в условиях пандемии COVID-19 и связанных с ней ограничительных мер.Материалы и методы. Проведено ретроспективное описательное когортное исследование, в которое включены иностранные граждане старше 18 лет с установленным диагнозом «туберкулез», выявленные в 2018-2021 гг. Всего в исследование включено 348 человек: 192 пациента, выявленные в 2018-2019 гг., и 156 пациентов – в 2020-2021 гг.Результаты. Пандемия COVID-19 в краткосрочной перспективе не оказала существенного влияния на организацию выявления туберкулеза у иностранных граждан в Новосибирской области, хотя отмечается значимое увеличение числа несвоевременно выявленных больных с деструкцией. Тем не менее существующий в настоящее время алгоритм диагностики туберкулеза среди иностранных граждан нуждается в значительном совершенствовании. Так, охват периодическими осмотрами касается преимущественно легальных трудовых мигрантов, в то время как нелегально работающие иностранные граждане остаются не охваченными скринингом на туберкулез. При диагностике туберкулеза используется минимальный необходимый набор лабораторных исследований, что не позволяет бактериологически верифицировать диагноз и уточнить спектр чувствительности возбудителя

The eye pressure dynamics during glaucomatous shunt surgery with uveoscleral outflow activation

The studies of influence all the phases of uveoscleral outflow stimulation on the intraocular pressure (IOP) level were carried out in the course of 37 glaucomatous operation. Two methodics of glaucomatous surgery and two viscoelastics with different pseudoplasticity were compared. The IOP measurement was carried out intraoperatively and 24 hours later. It was stated that posterior sclerectomy was accompanied by IOP decrease on 4,0±0,5 mm Hg (

Concerning the choice of viscoelastic solutions in glaucoma shunt surgery

Shunt surgery does not have any alternative in refractory glaucoma treatment. The results of this surgical direction are restrained by high risks of intra- and postoperative complications. Considerable fluctuation of intraocular pressure and inflammatory process relate to intraoperative complications. This problem is partly solved by use of viscoelastic fluids nevertheless we do not have precise ideas about qualities of viscoelastic fluids which would be appropriate in this surgery. The comparative study between three groups of viscoelastic fluids in vitro to invextigate the adhesive capacity of leucocytes was carried out. The provocation of adhesive molecules exspression on the leucocytes membranes in experiment was estimated as reaction that activates inflammatory process in the conditions of surgical trauma. Sodium hyaluronate 3% was determined to possess the best qualities. This preparation activate the leucocytes adhesion to a lesser degree, and is capable to be in the anterior chamber for a long time. Use of sodium hyaluronate 3% prevents rough scarring by decreasing inflammation rate

A Substitute for Fishmeal in the Diet of Broiler Chicks

The aim of this research was to study the biochemical properties of a new protein-rich feed additive produced by the short-term intense thermal treatment and subsequent enzymatic hydrolysis of the wastes of poultry slaughter and primary processing (feathers and fluff). It was found that this feather-based fermented feed additive contained high amounts of crude protein (86.52%); and the content of easily digestible low-molecular peptides in the additive was 9% higher compared to fishmeal. The amino acid profiles of the additive and fishmeal were compared. The effectiveness of substituting the additive for fishmeal in the diet of broiler chicks was demonstrated by the in vivoexperiments. The results showed that the digestibility of the dietary nutrients was higher in broilers that were fed the new additive compared to those fed fishmeal, which resulted in higher meat productivity: the average daily weight gains in additive-fed broilers was 3.82% higher (p <0.01) compared to fishmeal-fed control broilers, the dressing was 1.4%higher, the muscle in the carcass was 2.1% higher, and the feed conversion ratio was 3.57%lower. The sensory evaluation scores of the meat and broth were also higher in the additive-fed broilers. Keywords: feedadditive, feather wastes of poultry slaughter, enzymatic hydrolysis, distribution of molecular peptide weights, digestibility, productive performance in broiler