REVIEWS

Eight years of African swine fever in Poland – an epidemiological analysis Pejsak Z., et al. [ summary ] 481

A new taxonomy of Leptospira in the genomic era Arent Z., et al. [ summary ] 489

ORIGINAL PAPERS

Vaccination against gonadoliberin with Improvac influences adiponectin and leptin regulation ... Kotula-Balak M., et al. [ summary ] 497

Results of ultrasound-guided transvaginal collection of oocytes... Sanchez R., et al. [ summary ] 503

Analysis of work intensity in draft horses based on the heart rate recovery index Tischner M. jr, et al. [ summary ] 509

The research on a new materials in animals reproduction and a new type of embryo transfer catheter in pig. Wieczorek J., et al. [ summary ] 513

Influence of storage at 5°C and vitrification on apoptotic changes in equine blastocysts Okólski A., et al. [ summary ] 521

Diverse effect of in ovo treatment with metaloestrogen - selenium on chick testis histology and estrogen signaling Pardyak L., et al. [ summary ] 526