Mesenchymal stem cells have been widely used in the treatment of various chronic diseases. The objective of this survey was to evaluate the therapeutic and regenerative potential of stem cells from adipose tissue (ASCs) in the milk production recovery repair of tissue injury in mastitis goats treated with antimicrobial agents prior to cell therapy. After the diagnosis of mastitis and treatment with gentamicin, eight lactating goats were selected for cellular and subsequent therapy, physical-chemical analysis of milk, ultrasonographic and histopathological examinations. The ASCs were taken from the subcutaneous fat of a young goat cultivated in vitro, marked with Qdots-655 and injected in the left mammary gland, being the right mammary gland used as the control. After 30 days the ultrasonographic and histopathological analyzes were repeated and, in the first lactation period, the physical-chemical analysis of the milk was reapeated. Before the cellular therapy, the physical-chemical quality of the milk was compromised and the ultrasonographic and histopathological analysis revealed a chronic inflammatory process and fibrous tissue. The marking of the ASCs with Qdots enabled the tracking, by fluorescence microscopy (BX41-OLYMPUS), in the mammary tissue. In the ASCs therapy, cultures showed high cellularity and characteristics favorable to preclinical studies; with the therapy the physical-chemical parameters of the milk, fat, protein, temperature and pH showed significant differences among the groups; five animals treated with ASCs reconstituted the functionality of the gland and the connective tissue reduced in quantity and inflammatory infiltrate cells. ASCs have potential for the possible regeneration of fibrous mastitis lesions in the mammary gland, however, it would be necessary to increase injection time for the histopathological analysis, since the reconstitution of the glandular acini within the assessed period was not finalized. ASCs can be used to reestablish milk production in goat with chronic mastitis repair mammary lesions, with potential to be a promising clinical alternative for animal rehabilitation for productivity.

To assess the effect of the angiotensin-converting enzyme (ACE) inhibition on the efficiency of the fixed-time artificial insemination (TAI), 69 goats were divided randomly into two groups: enalapril (n = 35) and control (n = 34). In the experiment, all animals underwent the protocol of fixed-time artificial insemination for 12 days. Enalapril group received enalapril maleate dissolved in saline (Enalapril, Lab Teuto Ltda) subcutaneously at the following doses: 0.2 mg/kg/day in D0-D2; 0.3 mg/kg/day in D3-D6 and 0.4 mg/kg/day in D7-D11. The control group received the corresponding volume of 0.9% saline solution. We performed a single insemination 36 hr after sponge removal using frozen semen from two adult male goats with recognized fertility. The ultrasound pregnancy diagnosis was 30 days after the artificial insemination (AI). There was significant increase in pregnancy rates and twinning as well as a decrease in foetal loss in animals receiving enalapril (p < .01). The use of ACE inhibitors during the TAI protocol was shown to be a promising alternative to increase the efficiency of such reproductive biotechnology.

RESUMO Avaliou-se a influência da somatotropina recombinante bovina (rbST) sobre os metabolismos energético e mineral de búfalas entre 63e 154 dias em lactação. Foram utilizadas 22 búfalas, distribuídas em dois grupos experimentais: grupo rbST - aplicação de 500mg de rbST a cada 14 dias; grupo Controle - sem aplicação de rbST. A cada sete dias, foram coletadas amostras de sangue para a determinação do perfil bioquímico e mensuraram-se a produção de leite e o escore de condição corporal dos animais. As médias dos parâmetros estudados para os grupos rbST e Controle foram, respectivamente: produção de leite (PL): 6,44kg vs. 6,68kg; escore de condição corporal-ECC (1-5): 3,51 vs. 3,57; glicose: 70,58 vs. 64,81mg/dL (P = 0,0003); colesterol: 132,38 vs. 133,40mg/dL; triglicérides: 29,18 vs. 28,32mg/dL; proteína total: 8,57 vs. 8,75g/dL; albumina: 3,47 vs. 3,60g/dL; ureia: 32,46 vs. 33,86mg/dL; creatinina: 1,27 vs. 1,39mg/dL; cálcio:10,25 vs. 10,73mg/dL; fósforo:5,76 vs. 5,62mg/dL; e magnésio:3,70 vs. 3,70mg/dL. O uso de 500mg de rbSTinfluenciou o metabolismo da glicose, porém não modificou a PL, o ECC e os níveis dos demais parâmetros metabólicos estudados.

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RESUMO O estudo objetivou avaliar a qualidade seminal de caprinos das raças Canindé (autóctone) e Alpina Britânica (exótica) no Nordeste brasileiro. O experimento foi realizado nos períodos de julho a setembro dos anos de 2015 e 2016. As coletas seminais foram realizadas com auxílio de vagina artificial, de machos das raças Canindé (n = 4) e Alpina Britânica (n = 7). Após a coleta, o sêmen foi avaliado quanto a: volume (ml), concentração (sptz/ml), motilidade (%) e vigor (1-5). Em seguida, diluído em ACP-101c e criopreservado em máquina TK3000TM. Posteriormente, foram analisados os parâmetros cinéticos, através do software SCA®, e a atividade mitocondrial. No sêmen fresco, as duas raças apresentaram valores de motilidade e concentração dentro do preconizado para a espécie. Entretanto, os valores de volume e circunferência escrotal foram superiores na raça Alpina Britânica (0,73 ml ± 0,32; 27,35 cm ± 2,09) do que na raça Canindé (0,36 ml ± 0,07; 23,25 cm ± 0,95) (p < 0,05). Já no sêmen descongelado, os parâmetros motilidade total - MT (36,96% ± 11,16 vs. 20,50% ± 14,15), motilidade progressiva - MP (26,67% ± 11,13 vs. 11,29% ± 9,42), vigor (2,91 ± 0,90 vs. 1,88 ± 0,67), velocidade curvilinear - VCL (78,12 µm/s ± 12,41 vs. 59,28 µm/s ± 15,57), velocidade linear - VSL (49,23 µm/s ± 9,87 vs. 29,9 µm/s ± 9,48), velocidade média da trajetória - VAP (66,08 µm/s ± 12,77 vs. 45,70 µm/s ± 12,20), linearidade - LIN (62,97% ± 6,96 vs. 49,54%±9,50), retilinearidade - STR (74,63% ± 6,44 vs. 65,77% ± 8,92), e oscilação - WOB (84,32% ± 5,94 vs. 74,42% ± 7,31) foram superiores para a raça Canindé em detrimento à Alpina Britânica (p < 0,05). Portanto, o sêmen fresco das duas raças podem ser utilizados em biotécnicas reprodutivas. Já o sêmen pós-descongelação da raça Canindé apresentou melhor qualidade, provavelmente pelos animais estarem mais adaptados às condições adversas da região Nordeste, sendo recomendado para programas de inseminação artificial.