Морфологическая характеристика печени и слизистой оболочки тонкого кишечника поросят при применении энрофлоксацина и колистина

Intramuscular injection of the drug on the basis of compositional enrofloxacin and colistin in doses of 0,5, 1,0 and 2,5 ml per 10 kg weight of the animal within 20 days of piglets did not violate arhitektotoniku girder structure of the organ and morphometric parameters of hepatocytes. Use of the drug did not alter the amount and distribution of the lobules of the liver glycogen and lipid content of DNA in the nuclei and RNA in the cytoplasm of hepatocytes, as well as the amount of total proteins in hepatocytes. The composite preparation on the basis of enrofloxacin and colistin of piglets had no effect on the structural organization of the mucosa of the small intestine and morphometric parameters, as well as DNA content nuclei and RNA in the cytoplasm. It does not change the core area, area and cytoplasmic-nuclear ratio of enterocytes apical and lateral surfaces of villi and crypts.В статье рассматриваются результаты внутримышечного введения поросятам композиционного препарата на основе энрофлоксацина и колистина в дозах 0,5, 1,0 и 2,5 мл на 10 кг массы животного в течение 20 дней. Данное введение не нарушало архитектотонику балочной структуры печени и морфометрические показатели гепатоцитов. Применение препарата не изменяло количество и распределение по дольке печени гликогена и липидов, содержание ДНК в ядрах и РНК в цитоплазме гепатоцитов, а также количество суммарных белков в гепатоцитах. Композиционный препарат на основе энрофлоксацина и колистина не влиял на структурную организацию слизистой оболочки тонкого кишечника и морфометрические показатели, а также на содержание ДНК в ядрах и РНК в цитоплазме. При этом не изменялась площадь ядра, площадь и цитоплазменно-ядерное отношение энтероцитов, апикальной и боковых поверхностей ворсинок и крипт

Клинико-эпизоотологическая и патоморфологическая диагностика репродуктивно-респираторного синдрома свиней

The main symptom of porcine reproductive and respiratory syndrome is a violation of reproductive function in sows, which is accompanied by abortion, premature birth of dead, weak and ugly piglets and mummified fetuses. Clinical signs of disease in sows usually develop in late gestating (100-114 days). The greatest number of stillbirths and deaths of piglets in the first days of life in PRRS observed in epizootic period of flow, when passing in the enzootic period, the number of stillborn piglets markedly reduced. In households, where the vaccine against the disease was not carried out, re-epizootic outbreaks occur every 18-19 months, and continue 4-5 months. The number of stillborn piglets in the initial appearance of reproductive respiratory syndrome of pigs is higher than in its recurrence. Bringing diseases occur with repair pigs and boars from farms with PRRS. Differential diagnosis of porcine reproductive and respiratory syndrome should be on those diseases, whose pathogens can cause the death of embryos or abortion.В статье рассматриваются симптомы репродуктивно-респираторного синдрома свиней. Рассказывается о клинических признаках болезни у свиноматок и их развитии

Этиологические факторы и клинико-морфологическое проявление хламидиоза в свиноводческих комплексах

We studied etiological factors and clinical-morphological expression of chlamydia in pig farms. The disease was observed in the farms, regardless of the season, but more often in winter-spring period. Upon initial appearance of the disease in farms with single sows gestating in recent weeks registered abortions. In pigs-sosunov chlamydia proceeded against the defeat of the respiratory, digestive organs.В статье рассматриваются этиологические факторы и клинико-морфологическое проявление хламидиоза в свиноводческих комплексах. Отмечается, что болезнь возникает в хозяйствах независимо от сезона года, но чаще в зимне-весенний период. При первичном возникновении болезни у свиноматок регистрируются аборты. У поросят-сосунов хламидиоз протекает с поражением органов дыхания и пищеварения

Эпизоотология и клинико-морфологическая характеристика сальмонеллеза в свиноводческих комплексах

We studied epizootiology and clinical-morphological characteristics of salmonella in pig farms. Salmonella in pig farms often recorded under adverse conditions of feeding and housing of animals. The disease in pigs took place in acute, sub-acute and chronic forms.В статье рассматриваются эпизоотология и клинико-морфологическая характеристика сальмонеллеза в свиноводческих комплексах. Показывается, что сальмонеллез в свиноводческих комплексах чаще регистрируется при неблагоприятных условиях кормления и содержания животных. Болезнь у поросят протекает в острой, подострой и хронической формах

ϒ production in p–Pb collisions at √sNN=8.16 TeV

ϒ production in p–Pb interactions is studied at the centre-of-mass energy per nucleon–nucleon collision √sNN = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, down to zero transverse momentum. In this work, results on the ϒ(1S) production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the ϒ(1S) yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the ϒ(2S) nuclear modification factor is evaluated, suggesting a suppression similar to that of the ϒ(1S). A first measurement of the ϒ(3S) has also been performed. Finally, results are compared with previous ALICE measurements in p–Pb collisions at √sNN = 5.02 TeV and with theoretical calculations.publishedVersio

(Anti-)deuteron production in pp collisions at 1as=13TeV

The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at s=13 TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity (d Nch/ d \u3b7 3c 26) as measured in p\u2013Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p\u2013Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and statistical hadronisation models (SHM)

Measurement of jet suppression in central Pb-Pb collisions at root s(NN)=2.76 TeV

The transverse momentum(p(T)) spectrum and nuclear modification factor (R-AA) of reconstructed jets in 0-10% and 10-30% central Pb-Pb collisions at root s(NN) = 2.76 TeV were measured. Jets were reconstructed using the anti-k(T) jet algorithm with a resolution parameter of R = 0.2 from charged and neutral particles, utilizing the ALICE tracking detectors and Electromagnetic Calorimeter (EMCal). The jet p(T) spectra are reported in the pseudorapidity interval of \eta(jet)\ 5 GeV/c to suppress jets constructed from the combinatorial background in Pb-Pb collisions. The leading charged particle requirement applied to jet spectra both in pp and Pb-Pb collisions had a negligible effect on the R-AA. The nuclear modification factor R-AA was found to be 0.28 +/- 0.04 in 0-10% and 0.35 +/- 0.04 in 10-30% collisions, independent of p(T), jet within the uncertainties of the measurement. The observed suppression is in fair agreement with expectations from two model calculations with different approaches to jet quenching. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.Peer reviewe

Multiplicity dependence of inclusive J/psi production at midrapidity in pp collisions at root s=13 TeV

Measurements of the inclusive J/psi yield as a function of charged-particle pseudorapidity density dN(ch)/d eta in pp collisions at root s = 13 TeV with ALICE at the LHC are reported. The J/psi meson yield is measured at midrapidity (vertical bar y vertical bar <0.9) in the dielectron channel, for events selected based on the charged-particle multiplicity at midrapidity (vertical bar eta vertical bar <1) and at forward rapidity (-3.7 <eta <-1.7 and 2.8 <eta <5.1); both observables are normalized to their corresponding averages in minimum bias events. The increase of the normalized J/psi yield with normalized dN(ch)/d eta is significantly stronger than linear and dependent on the transverse momentum. The data are compared to theoretical predictions, which describe the observed trends well, albeit not always quantitatively. (C) 2020 European Organization for Nuclear Research. Published by Elsevier B.V.Peer reviewe

Elliptic flow of identified hadrons in Pb-Pb collisions at 1asNN = 2.76 TeV

The elliptic flow coefficient (v2) of identified particles in Pb-Pb collisions at 1asNN = 2.76 TeV was measured with the ALICE detector at the Large Hadron Collider (LHC). The results were obtained with the Scalar Product method, a two-particle corre- lation technique, using a pseudo-rapidity gap of | 06\u3b7| > 0.9 between the identified hadron under study and the reference particles. The v2 is reported for \u3c0\ub1, K\ub1, K0S, p+p, \u3c6, \u39b+\u39b, \u39e 12+\u39e+ and \u3a9 12+\u3a9+ in several collision centralities. In the low transverse momentum (pT) region, pT 3 GeV/c

J/psi production as a function of charged-particle pseudorapidity density in p-Pb collisions at root s(NN)=5.02 TeV

We report measurements of the inclusive J/ψ yield and average transverse momentum as a function of charged-particle pseudorapidity density dNch/dη in p–Pb collisions at sNN=5.02TeV with ALICE at the LHC. The observables are normalised to their corresponding averages in non-single diffractive events. An increase of the normalised J/ψ yield with normalised dNch/dη, measured at mid-rapidity, is observed at mid-rapidity and backward rapidity. At forward rapidity, a saturation of the relative yield is observed for high charged-particle multiplicities. The normalised average transverse momentum at forward and backward rapidities increases with multiplicity at low multiplicities and saturates beyond moderate multiplicities. In addition, the forward-to-backward nuclear modification factor ratio is also reported, showing an increasing suppression of J/ψ production at forward rapidity with respect to backward rapidity for increasing charged-particle multiplicity