To better understand and manage the population of donkeys and mules, it is essential to know information about its size. In developing countries, these animals are often used as working animals, mainly by poor populations in agricultural and livestock labor, but their use is decreasing in Brazil. Brazilian official data regarding donkeys and mules started to be measured at the agricultural census of 1960 and, from that time, eight agricultural censuses were published. But until the writing of this paper, no scientific paper was dedicated to the analysis of the results of the official agricultural censuses on the population of donkeys and mules in Brazil. Thus, we aim to compile and analyze the official Brazilian data from 1960 until 2017 to enhance the actions of stakeholders, researchers, and decision-makers concerned with Brazilian donkeys and mules.

Healthy eyes with good vision were important to any animal, to safely exist in their environments, for quality of life, and to successfully compete for food. The aim of present study was to set normal values for biometric intraocular dimensions in healthy mules for the right and left eyes in males and females. The study was conducted on clinically healthy mules (n=40) which were classified into two groups; male (n=20) and female mules (n=20). Complete clinical examination and ultrasonographic characterization of ocular structures were carried out for all clinically healthy mules. Biometric intraocular dimensions of the right eye and the left eye included anterior chamber depth (ACD), axial globe length (AGL), central lens thickness (CLT), lens pole diameter (LPD) and vitreous chamber depth (VCD), were described using ocular ultrasonography. It also showed normal intraocular structures of the right eye and the left eye that included, anterior chamber (AC), cornea (C), iris (I), lens (L), optic disk (OD), optic nerve (ON), retinochoroid unit (RCU), retrobulbar fat (RF), retrobulbar muscles (RM) and vitreous body (VB). Ocular ultrasonography reported no significant variations for biometric intraocular dimensions of the eye between male and female mules as well as between right and left eyes either in male mules or in female mules. The study reported normal values for ultrasonographic biometric intraocular dimensions of the right and left eyes in clinically healthy male and female mules.

Thirty-six of 50 young equids examined at necropsy for gross pathologic and histopathologic evidence of osteochondrosis were determined to have lesions characteristic of this disorder in the distal joints of the tarsus. Abnormalities ranged from retained endochondral cores underlying undisturbed articular cartilage surfaces to clefts, subchondral osseous cyst-like lesions, and cartilage ulceration. Our findings supported the conclusion that osteochondrosis may cause spavin in the juvenile equid.

Strangles is an extremely contagious bacterial infection specific to
equine species( horses, mules and zebras). A nationwide screening of S. equi was conducted among horses following an isolation of Streptococcus equi subsp. equi (S. equi) from a horse. All horses were monitored for the presence of respiratory signs, nasal discharge and submandibular swelling. This paper reports the isolation of S. equi from horses during a nationwide survey from August 2010 to December 2010. From August 2010 to December 2010 our laboratory received 2,825 nasal swabs, 9 guttural pouch flushes, 1 submandibular swab and 1 submandibular abscess. The samples were subjected to conventional bacterial isolation and identification.
Streptococcus equi-positive samples were also confirmed by detecting the M-gene (SeM) of the bacteria by using PCR. Two nasal swabs from two horses and one submandibular abscess from a horse were positive for S. equi by culture and subsequently by PCR. Surveillance for S. equi should be continued for the control of the strangles. PCR can be carried out in parallel to bacterial culture to increase the
detection rate of carriers and shedders.