RESUMEN
This study aimed to evaluate the effects of molybdenum (Mo) and organic and inorganic sources of copper (Cu) and sulfur (S) on the performance, carcass traits, and blood concentration of these minerals in lambs. Forty male non-castrated crossbred Dorper x Santa Inês lambs (20 ± 1.2 kg of body weight and 90 ± 2 d of age) were randomly allocated into one of the ten following treatments: (T0) control, basal diet; (T1) Mo; (T2) inorganic Cu and inorganic S; (T3) inorganic Cu and organic S; (T4) organic Cu and inorganic S; (T5) organic Cu and organic S; (T6) Mo plus inorganic Cu and inorganic S; (T7) Mo plus inorganic Cu and organic S; (T8) Mo plus organic Cu and inorganic S; and (T9) Mo plus organic Cu and organic S. Regardless of the source, Mo, Cu, and S were added at levels of 10 mg, 10 mg, and 2000mg/kg DM, respectively. The mineral supplements (Mo, Cu, and S) were added into the total mixed ration (TMR) by mixing them apart with the mineral and vitamin premix and then put into the TMR. The animals were kept in individual pens and received a total mixed ration for 84 days. Body weight and blood sampling was performed every 28 days. All animals were slaughtered after 84 days, and carcass traits were evaluated. Although organic sources of Cu and S added to Mo supplementation had increased the ADG throughout the study, this effect did not reflect in the heavier final BW outcomes for this treatment. In addition, no effect of these treatments was observed on the carcass traits. The serum Cu concentration was higher for the T0 group compared to the other groups; otherwise, Mo reduced the serum Cu concentration compared to the other groups. Considering the interaction among the minerals and their sources at 84 d of study, organic sources of Cu and S treatment and Mo associated with inorganic sources of Cu plus organic S treatment had an increased serum Cu concentration compared to other groups. Regardless of time, organic sources of Cu and S increased serum S concentration. At 84 days after enrollment, serum Mo concentration was lower for the control group compared to the other groups. Further, Mo supplementation increased its blood concentration compared to the control group throughout the study. The control group had the highest ceruloplasmin activity compared to the other groups; otherwise, at 84 d of the study, either Mo or inorganic S supplementation reduced ceruloplasmin activity. Serum ceruloplasmin activity was higher when Cu supplementation, regardless of source, was associated with organic S. However, at d 84 of the study, inorganic Cu associated to organic S supplements increased serum ceruloplasmin activity. In this current study, it was not possible to identify a pattern in the variables studied, however, further studies are needed to confirm that organic sources of Cu and S interacted alone without a defined pattern.
RESUMEN
A 3 year-old mare, Arab, that belongs to the experimental herd of FMVZ-USP presented cutaneous tumor lesions on right and left posterior limb with approximately one year of evolution. A new formation with rapid growth was observed on the neck region, and since then, the limbs lesion gained inflammatory characteristics. Aspirative punction was performed on the neck formation in order to submit the sample to cytological analyses, in which eosinophilic infiltrate was identified. At this point, a conservative approach was chosen with three consecutive corticoid infiltrations. With lack of success of infiltrative therapy, neck, right and left posterior limbs lesions were surgically removed. The material obtained from surgical procedures were sent to histophatological and immunohistrochemical evaluation, that confirmed cutaneous mastocytoma diagnosis. The mare was discharged after all surgical wound were healed and after full remission of clinical signs, and did not show relapses or any other complication from tumor lesions. Some cutaneous tumors are well described and commonly occur in horses, such as sarcoids, melanoma, papilloma and squamous cell carcinoma. Cutaneous mastocytoma is considered a rare cutaneous tumor in this species. According to literature, equine mastocytoma do not have breed predilection, however, some authors mention a greater involvement in Purebreed Arabian horses. In order to establish a definitive diagnosis, it is important to associate physical exams to histophatological an immunohistochemical evaluation and, even though rare in horses, this neoplasm must be considered as a differential diagnosis.
Uma égua puro sangue árabe, com 3 anos de idade, pertencente ao rebanho experimental da FMVZ-USP apresentou lesões tumorais cutâneas nos membros pélvicos direito e esquerdo com aproximadamente um ano de evolução. Notou-se nova formação cutânea com crescimento rápido na região do pescoço, e desde então, as lesões dos membros ganharam características inflamatórias. Foi realizada punção aspirativa da lesão do pescoço para análise citológica, em que se identificou infiltrado eosinofílico. Optou-se pelo início de tratamento conservativo com três infiltrações intralesionais consecutivas com corticoesteroide. A partir da falta de sucesso das infiltrações foram realizadas as excisões cirúrgicas totais dos nódulos do pescoço, membro pélvico direito e esquerdo. Todos os materiais obtidos dos procedimentos cirúrgicos foram enviados para avaliação histopatológica e imuno-histoquímica, nas quais se confirmou o diagnóstico de mastocitoma cutâneo. O animal recebeu alta após a cicatrização das feridas cirúrgicas e remissão dos sinais, e não demonstrou recidivas ou outras complicações advindas das lesões tumorais. Algumas neoplasias cutâneas são bem descritas e de comum ocorrência na espécie equina, como o sarcoide, melanoma, papiloma e tumor de células escamosas. Já o mastocitoma cutâneo consiste em neoplasia cutânea rara nessa espécie. Segundo a literatura, não parece existir uma predileção racial para o aparecimento deste tumor, entretanto, alguns autores citam o acometimento maior nos animais Puro Sangue Árabe. Para o estabelecimento do diagnóstico definitivo é importante a associação dos exames físico, histopatológico e imuno-histoquímico e, apesar desta neoplasia ser de raro aparecimento nos equinos, deve ser sempre considerada como diagnóstico diferencial.
Asunto(s)
Animales , Neoplasias Cutáneas/veterinaria , Inmunohistoquímica/veterinaria , Técnicas de Laboratorio Clínico/veterinaria , Mastocitosis Cutánea/veterinaria , Mastocitoma Cutáneo/veterinaria , Caballos/cirugíaRESUMEN
Uma égua puro sangue árabe, com 3 anos de idade, pertencente ao rebanho experimental da FMVZ-USP apresentou lesões tumorais cutâneas nos membros pélvicos direito e esquerdo com aproximadamente um ano de evolução. Notou-se nova formação cutânea com crescimento rápido na região do pescoço, e desde então, as lesões dos membros ganharam características inflamatórias. Foi realizada punção aspirativa da lesão do pescoço para análise citológica, em que se identificou infiltrado eosinofílico. Optou-se pelo início de tratamento conservativo com três infiltrações intralesionais consecutivas com corticoesteroide. A partir da falta de sucesso das infiltrações foram realizadas as excisões cirúrgicas totais dos nódulos do pescoço, membro pélvico direito e esquerdo. Todos os materiais obtidos dos procedimentos cirúrgicos foram enviados para avaliação histopatológica e imuno-histoquímica, nas quais se confirmou o diagnóstico de mastocitoma cutâneo. O animal recebeu alta após a cicatrização das feridas cirúrgicas e remissão dos sinais, e não demonstrou recidivas ou outras complicações advindas das lesões tumorais. Algumas neoplasias cutâneas são bem descritas e de comum ocorrência na espécie equina, como o sarcoide, melanoma, papiloma e tumor de células escamosas. Já o mastocitoma cutâneo consiste em neoplasia cutânea rara nessa espécie. Segundo a literatura, não parece existir uma predileção racial para o aparecimento deste tumor, entretanto, alguns autores citam o acometimento maior nos animais Puro Sangue Árabe. Para o estabelecimento do diagnóstico definitivo é importante a associação dos exames físico, histopatológico e imuno-histoquímico e, apesar desta neoplasia ser de raro aparecimento nos equinos, deve ser sempre considerada como diagnóstico diferencial.
A 3 year-old mare, Arab, that belongs to the experimental herd of FMVZ-USP presented cutaneous tumor lesions on right and left posterior limb with approximately one year of evolution. A new formation with rapid growth was observed on the neck region, and since then, the limbs lesion gained inflammatory characteristics. Aspirative punction was performed on the neck formation in order to submit the sample to cytological analyses, in which eosinophilic infiltrate was identified. At this point, a conservative approach was chosen with three consecutive corticoid infiltrations. With lack of success of infiltrative therapy, neck, right and left posterior limbs lesions were surgically removed. The materials obtained from surgical procedures were sent to histophatological and immunohistrochemical evaluation that confirmed cutaneous mastocytoma diagnosis. The mare was discharged after all surgical wound were healed and after full remission of clinical signs, and did not show relapses or any other complication from tumor lesions. Some cutaneous tumors are well described and commonly occur in horses, such as sarcoids, melanoma, papilloma and squamous cell carcinoma. Cutaneous mastocytoma is considered a rare cutaneous tumor in this species. According to literature, equine mastocytoma do not have breed predilection, however, some authors mention a greater involvement in Purebreed Arabian horses. In order to establish a definitive diagnosis, it is important to associate physical exams to histophatological an immunohistochemical evaluation and, even though rare in horses, this neoplasm must be considered as a differential diagnosis.
