Carcinoma espinocelular da base do chifre, bilateral e simétrico, em vaca com distúrbio hormonal ˗ relato de caso / [Horn-based squamous cell carcinoma, bilateral and symmetrical in cow with hormonal disorder ˗ case report]

Este trabalho tem por objetivo descrever um caso de carcinoma espinocelular da base do chifre, bilateral e simétrico, em uma vaca e discutir a questão hormonal, possivelmente envolvida na patogênese da doença. Tratava-se de uma fêmea bovina, 11 anos, com histórico de emagrecimento progressivo, presença de massas exofíticas na base de ambos os chifres e em anestro por muitos anos. Foi realizada biopsia incisional de ambas as lesões para exame histopatológico e dosagens hormonais. Devido à progressão do quadro clínico, optou-se pela eutanásia, seguida dos exames necroscópico e histopatológico. O exame histopatológico revelou tratar-se de um carcinoma espinocelular infiltrativo bem diferenciado, e as dosagens hormonais apresentaram alterações nos níveis do hormônio luteinizante, folículo estimulante e estrógenos totais. Apesar de existirem descrições de carcinomas espinocelulares da base do chifre, ainda não havia relatos da ocorrência do mesmo bilateral e em uma vaca com distúrbios hormonais.(AU)

The objective of this study was to describe a case of bilateral and symmetrical squamous cell carcinoma from the horn base in a cow and to discuss the hormonal question, possibly involved in its pathogenesis. A 11-year-old beef cow presenting a history of progressive thinning, presence of exophytic masses at the base of both horns and anestrous for many years was assisted. An incisional biopsy of both lesions was performed for histopathological examination and hormonal dosages. Due to the clinical progression, euthanasia followed by necroscopic and histopathological examination was carried out. Histopathological examination revealed a well differentiated infiltrative squamous cell carcinoma and the hormonal dosages presented changes in luteinizing hormone, follicle stimulating and total estrogen levels. Although there are descriptions of basal squamous cell carcinoma of the horn, there were still no reports of the occurrence of the same bilateral in a cow with hormonal disorders.(AU)

Animal wastes. I. Effect of processing on the chemical and protein nutritional value of calf stomach.

The nutritive value of calf stomach waste from rennet production was assessed. The by-product was either drum-dried at the industry (DDSW) or mildly dried (60 degrees C) in a ventilated oven at the laboratory (MDSW). Part of the sample treated at the laboratory was autoclaved before drying (ASW). The protein and ether extract concentrations ranged from 34.25% to 44.31% and from 31.14% to 38.95%, respectively, and were lower in DDSW than in the other two samples. The ash content which ranged from 16.04% to 27.38%, was higher in the DDSW sample. Methionine, cystine, and available lysine were lower in the DDSW by-product than in the other two samples. Lysine availability was affected by the drum-drying and autoclaving procedures. Tryptophan was shown to be the limiting amino acid in all samples. Nutritive value, assayed both in DDSW and ASW, was lower in DDSW when compared with ASW or with casein diets as far as PER is concerned. The digestibility was shown to be ranked in increasing order for DDSW, ASW and casein. In conclusion, the results indicate that the waste from rennet production may be recommended as in inexpensive source of protein for animal feeding.