Morphological changes in the skin of the interdigital region in cattle with chronic dermatitis

Structural changes in the distal part of the limbs in cattle are manifested not only by arthrosis of the finger joints, but also by destructive changes in the skin in this area. At the same time, the condition of the hooves and signs of damage to the hoof horn have been described in a number of studies, while the condition of the skin in the interdigital area has not been sufficiently studied at the microscopic level. However, the chronicity of dermatitis and the constant presence of a chronic inflammatory focus undoubtedly have a negative impact on the surrounding tissues and serve as an indicator of changes in the skin in the hoof area. This article presents the results of a study of morphological changes in the skin of dairy cows. The purpose to present data on morphological changes in the skin of the interdigital area in dairy cows with chronic dermatitis. The skin preparations of the interdigital area were studied in the study of the sectional material from 50 cows aged 3 and 4 years, which had signs of chronic interdigital dermatitis, disorders of the growth of the hoof horn, as well as arthrosis of the finger joints. The skin fragments were subjected to histological examination according to the generally accepted methodology. The micropreparations were studied using Jenamed-2 and MicroScreen microscopes. As a result of the conducted research, data was obtained on the variants of microscopic changes in the skin of the interdigital area in dairy cows with chronic dermatitis. It was shown that the process can occur with an allergic component, which should be taken into account when treating sick animals.

1. Zhurba, V. A. Deformation of Hooves and Defects of Hoof Horn in Cattle / V. A. Zhurba, V. M. Rukol, and I. A. Kovalev // Modern Technologies of Agricultural Production: Collection of scientific articles based on the materials of the 24th International Scientific and Practical Conference, Grodno, May 14–20, 2021 / Ministry of Agriculture and Food of The Republic of Belarus; Grodno State Agrarian University. – Grodno: GSAU, 2021. – Pp. 29-31. – EDN LVAAVK.

2. Veremey, E. I. Foot care / E. I. Veremey, V. A. Zhurba, V. M. Rukol, A. A. Stekolnikov, and B. S. Semenov // Animal Husbandry of Russia. – 2018. – №. 2. – Pp. 67-69.

3. Maryin, E. M. Feature of orthopedic pathologies in cattle / E. M. Maryin, V. A. Ermolaev, O. N. Maryina, I. S. Raksina // Vestnik Ul'yanovskoy gosudarstvennoy sel'skokhozyaystvennoy akademii. – 2012. – №. 4. – P. 66-69.

4. Pozyabin, S. V. Comparative characteristics of the structure of orthopedic pathologies of Holstein-Friesian and Holsteinized Black-Beast cows / S. V. Pozyabin, Yu. Belogurov, M. S. Borisov // Veterinariya, zootekhniya i biotekhnologiya. – 2018. – №. 11. – P. 19-24.

5. Volotko, I. Prevention and Treatment of Diseases of the Distal Limb of Cows / I. Volotko, A. Bezin, N. Butakova // Veterinary Medicine of Farm Animals. – 2015. – №. 1-2. – Pp. 40-45. – EDN VWPHNK.

6. Rukol, V. M. Prevention and Treatment of Cows with Limb Diseases / V. M. Rukol, A. A. Stekolnikov // Veterinary Medicine. – 2011. – №. 11. – Pp. 50-53. – EDN OIJJLN.

7. Pozyabin, S. V. Oxidative stress and realization of productive qualities of dairy cows in hoof pathology / Pozyabin S.V., Belogurov V.V., Azarnova T.O., Kachalin M.D.// Proceedings of the Kuban State Agrarian University, 2023, №.6 (108). pp. 190-196. [in Russ.], DOI 10.21515/1999-1703-108-190-196.

8. Gimranov, V. V. Prevalence and Damage Caused by Finger Diseases in Cattle in the Republic of Bashkortostan / V. V. Gimranov, R. R. Vakhitov, and N. V. Fisenko // Veterinaria, Zootechnia, and Biotechnology. – 2015. – №. 1. – Pp. 12-14. – EDN TFBMHF.

9. Amory, J. R. Associations between sole ulcer, white line disease and digital dermatitis and the milk yield of 1824 dairy cows on 30 dairy cow farms in England and Wales from February 2003 – November 2004 / J. R. Amory, Z. E. Barker, J. L. Wright, S. A. Mason, R. W. Blowey, L. E. Green. // Preventive veterinary medicine. – 2008. – V. 83(3- 4). – P. 381-391, DOI: 10.1016/j.prevetmed.2007.09.007.

10. Bicalho, R. C. Strategies to analyze milk losses caused by diseases with potential incidence throughout the lactation: a lameness example / R. C. Bicalho, L. D. Warnick, C. L. Guard // Journal of dairy science. – 2008. – V. 91. – №. 7. – 2653-2661, DOI: 10.3168/jds.2007-0744.

11. Warnick, L. D. The effect of lameness on milk production in dairy cows / L. D. Warnick, D. Janssen, C. L. Guard, Y. T. Grцhn // Journal of dairy science. – 2001. – V. 84. – №. 9. – P. 1988-1997, DOI:10.3168/jds.S0022-0302(01)74642-5.