Cadmium and zinc are often found in aquatic environment and may accumulate in living organisms. The aim of this study was to evaluate the genotoxic effect of Cd, Zn, and their binary mixture on the peripheral blood erythrocytes of Prussian carp (Carassius gibelio B.).

The intracellular bacterium Coxiella burnetii is the aetiological agent of Q fever, a zoonosis affecting many animal species worldwide. Cattle and small ruminants are considered the major reservoirs of the bacteria and they shed it through multiple routes.

Many countries have reported severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) infections in mink, and transmission back to humans has raised the concern of novel variants emerging in these animals. The monitoring system on Polish mink farms detected SARS-CoV-2 infection first in January 2021 and has been kept in place since then.

Bovine coronavirus (BCoV) is a causative agent of enteric and respiratory diseases in cattle. Despite its importance for animal health, no data is available on its prevalence in Poland. The aim of the study was to determine the virus’ seroprevalence, identify risk factors of BCoV exposure in selected cattle farms and investigate the genetic variability of circulating strains.

Streptococcus agalactiae is an important zoonotic pathogen that affects milk production and quality and poses a threat to public health. Treatment of infections with this bacterium exploits antimicrobials, to which the resistance of S. agalactiae is a growing problem. Addressing the possibility of a correlation between this pathogen’s genetic factors for antimicrobial resistance and virulence, this study attempted to identify the relevant genes.

Previous gag and env sequence studies placed Polish small ruminant lentiviruses (SRLVs) isolated from sheep and goats in subtypes B1, B2, A1, A5, A12, A13, A16–A18, A23, A24 and A27. This study extended the genetic/phylogenetic analysis of previously identified Polish SRLV strains by contributing long terminal repeat (LTR) sequences.

Bovine tuberculosis is one of the most dangerous zoonotic diseases. Despite the near-complete elimination of the disease from cattle breeding in Poland achieved in 2009, its re-emergence is now observed. Globally, the number of human cases is underestimated and the importance of free-living animals as reservoirs of tuberculosis is growing. As a species highly susceptible to Mycobacterium tuberculosis complex infection, the European bison (Bison bonasus) has a role in the transmission of the disease in Poland. The purpose of the investigation was to assess the epidemiological situation of tuberculosis in Polish European bison serologically.

Contagious agalactia of ruminants is an endemic disease caused by Mycoplasma agalactiae in flicting significant losses on farms in deaths and forced slaughter of sick animals, abortions, births of sick young animals, and reduced milk and wool production. The aim of the study was to determine the influence of hydrometeorological conditions on the distribution and forms of contagious agalactia in sheep in Bessarabia, Ukraine.

In May 2020, an outbreak of rabbit haemorrhagic disease 2 (RHD2) caused by the rabbit haemorrhagic disease virus 2 (RHDV2, GI.2) occurred in Sichuan, China. The acute onset and short disease course resulted in rabbit mortality as high as 42.86%. Currently, basic research on the aetiology and genetic characteristics of GI.2 is lacking in China.

Prolapsed nictitans gland is a common affection in dogs. Several treatment options have been suggested such as removal of the prolapsed nictitans gland, excision of the third eyelid, or repositioning of the gland. Keratoconjunctivitis sicca (KCS) was reported to occur after excision of the prolapsed gland or the third eyelid, while recurrence is commonly associated with repositioning surgery. Therefore, the aim of this study was to investigate the effect of excisions of the nictitans gland or third eyelid on ocular surface integrity, pH, and tear production. Nictitans gland or third eyelid were excised surgically from healthy eyes in dogs. Corneal integrity, pH, and tear amount were examined for 7 months. Histological examination was performed after 7 months of surgery. Fluorescein staining was negative at the different time points in both groups. No significant change was observed in pH after excision of the third eyelid. In contrast, pH was significantly decreased after 2 weeks of removal of the nictitans gland. Tear amount was significantly declined 2 and 3 weeks after excision of the third eyelid and 3 weeks after excision of nictitans gland. The histological examination of different regions including, eyelids, cornea and conjunctiva in both groups compared to control revealed that all parts were completely normal.  However, closer to the site of the third eyelid operation severe desquamation of epithelium and infiltration of inflammatory cells were observed. In conclusion, neither excisions of the third eyelid nor the nictitans gland induce the development of KCS or affect the ocular surface integrity.