Aspectos físico-químicos e sedimentoscopia da urina de matrizes suínas na fase de gestação criadas em sistema intensivo

Viviane Keller Oliveira Silva,Renato Luiz Silveira,Fabiana Batalha Knackfuss,Ana Claudia De Menezes Cruz,Suzane Therezinha Dineli Rizzo,Thereza Christina De Vasconcelos

doi:10.21708/avb.2021.15.3.9880

Abstract

The impact of pig farming on the worldwide economy causes production to be directed at an industrial scale, requiring the control of diseases that affect economic performance. Urinary infection (UI), for example, has a high prevalence in current production systems, causing economic losses due to the predisposition to reproductive failures, leading to an increase in disposal of sows and replacement rates. In this context, the objective of this work was to evaluate the prevalence of urinary tract infection (UTI) and possible changes in the urine sediment examination of pregnant sows to survey changes compatible with inflammation of the lower urinary tract. The samples were collected, randomly, from 43 sows of commercial genetic lineage, in different stages of gestation, and that belonged to a pig farm located in Guapimirim-RJ. The pig farm’s herd consisted of 200 sows, 90 of which were in the gestation phase. The samples were collected by spontaneous urination, using the first morning urine, before feeding, which happened around 7 am. The presence of UTI was identified in 12 of the 43 sows analyzed, with 21.5% of the herd being evaluated. A prevalence of 27.9% was observed with animals showing compatible UTI changes. This data was considered severe. The urine sediment examination is the best way to diagnose UTI with sedimentcopy being the most conclusive part. Despite this, it is necessary to relate the laboratory data with the zootechnical management used, as well as the environmental conditions.

Highlights

According to Merlini; Merlini (2011), the impact of pig farming on the world economy requires production to be directed to industrial scale, requiring the control of diseases that affect economic output, including urinary infection (UI)
Little et al (2006) observed that because there is a constant perineal contamination and because they have a relatively short urethra, domestic females present a predisposition to urinary infections, a fact that even makes the porcine species a model for the study of urinary tract infections (UTI) (NIELSEN et al, 2019)
The presence of UI was identified in 12 of the 43 analyzed sows, four (25%) belonging to the 1st group and eight (29.6%) to the 2nd group, according to Sobestiansky et al, (2005) who reported that females with urinary infection usually take longer to stand up

Summary

Introduction

According to Merlini; Merlini (2011), the impact of pig farming on the world economy requires production to be directed to industrial scale, requiring the control of diseases that affect economic output, including urinary infection (UI). It is highly prevalent in the current production systems, causing economic losses due to predisposition to reproductive failure, leading to an increase in the elimination of reproductive females and in the replacement rates (MAZUTTI et al, 2013a; RITTERBUSCH et al, 2014; MOURA et al, 2018). The several predisposing factors for the appearance of these affections are poor hygiene conditions in the facilities, locomotor apparatus problems, quality and quantity of water ingested, and age of the female (SOBESTIANSKY, 2007; DROLET, 2019)

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