RÉSUMÉ
The aim was to study pregnant cervus in captivity, to obtain body morphometric data, serum progesterone concentrations, and pH of the vagina. Females of cervus (Cervus unicolor), (n=8) between 2 and 3 years old were used in November during breeding season. After sedation, in one collection, the following was measured: body weight 54.50 ± 18.70kg, body length 1.21 ± 0.16m, height at withers 0.75 ± 0.08m, thoracic perimeter 0.84 ± 0.12m, and body mass index 97.32 ± 10.50kg / m2. After sedation, blood samples were collected to measure progesterone concentration by radioimmunoassay and the use of an indicator tape to obtain the pH of the vagina was performed eight times at four day intervals in the eight females, in a total of 64 samples for each exam. Data were analyzed, and significance was at 5%. There were no differences (P> 0.05) between measurements for serum progesterone concentrations and pH of the vagina. The correlations between body weight, progesterone, pH, and body mass index were not significant (P> 0.05). There was no significant oscillation of progesterone concentration and pH of the vagina in the pregnancy period studied.
Sujet(s)
Animaux , Cervidae/anatomie et histologie , Progestérone/analyse , Protéines du sang/analyse , Concentration en ions d'hydrogène , EndocrinologieRÉSUMÉ
O conhecimento do desenvolvimento mamário de um rebanho leiteiro é fundamental, pois relaciona-se à eficiência produtiva. Objetivou-se avaliar a associação dos parâmetros térmicos mamários com concentrações hormonais de búfalas em distintos estágios fisiológicos. Foram utilizadas 24 búfalas mestiças Murrah, em quatro grupos (n= 6): grupo 1 (bezerras), grupo 2 (novilhas), grupo 3 (gestantes) e grupo 4 (lactantes). A cada 28 dias, durante 4 meses, realizaram-se exames de termografia digital por infravermelho para verificar temperatura superficial dos corpos mamários craniais (CMCr) e caudais (CMC), das cisternas craniais (CGMCr) e caudais (CGMC) e tetas craniais (TGMCr) e caudais (TGMC). Foi aferida temperatura retal (TR) e colhido sangue para mensuração das concentrações plasmáticas do fator semelhante a insulina tipo-I, insulina (INS), hormônio do crescimento (GH), progesterona (P4) e estradiol. Grupos 1 e 2 apresentaram correlação de TR com CGMCr. No grupo 3, TR correlacionou-se com TGMCr, TGMC e concentrações plasmáticas de P4. No grupo 4, houve correlação de TR com CGMC, TGMCr e concentrações plasmáticas de INS e GH, e de TGMC com concentrações plasmáticas de GH. Nos quatro grupos, CGMCr correlacionou-se com CMCr e TGMCr, semelhantemente ao observado na porção caudal. Variações térmicas mamárias refletiram alterações fisiológicas aguardadas nos períodos avaliados.(AU)
The knowledge of the mammary development of a dairy herd is key, since it is related to its productive efficiency. The objective of this study was to evaluate the association of mammary thermal parameters with hormonal concentrations of buffaloes at different physiological stages. Twenty-four Murrah crossbred buffaloes were used in four groups (n= 6): group 1 (calves), group 2 (heifers), group 3 (pregnant animals) and group 4 (lactating animals). Every 28 days, for 4 months, infrared digital thermography was performed to check the surface temperature of cranial (CrCM) and caudal (CCM) corpus mammae, cranial (CrC) and caudal (CC) cisterns and cranial (CrT) and caudal teats (CT). Rectal temperature (RT) was measured and blood was collected to measure plasma concentrations of insulin-like factor I, insulin (INS), growth hormone (GH), progesterone (P4) and estradiol. Groups 1 and 2 presented correlation of RT with CrC. In group 3, RT correlated with CrT, CT and plasma P4 concentrations. In group 4, there was correlation of RT with CC, CrT and plasma concentrations of INS and GH, and CT with plasma GH concentrations. In all four groups, CrC correlated with CrCM and CrT, similar to that observed in the caudal portion. The thermal changes in the mammary glands reflected the expected physiological changes in the evaluated periods.(AU)
Sujet(s)
Animaux , Femelle , Bovins , Bovins/physiologie , Glandes mammaires animales/croissance et développement , Thermographie/classification , Buffles/physiologie , Techniques de diagnostic endocrinien/médecine vétérinaireRÉSUMÉ
The aim was to study pregnant cervus in captivity, to obtain body morphometric data, serum progesterone concentrations, and pH of the vagina. Females of cervus (Cervus unicolor), (n=8) between 2 and 3 years old were used in November during breeding season. After sedation, in one collection, the following was measured: body weight 54.50 ± 18.70kg, body length 1.21 ± 0.16m, height at withers 0.75 ± 0.08m, thoracic perimeter 0.84 ± 0.12m, and body mass index 97.32 ± 10.50kg / m2. After sedation, blood samples were collected to measure progesterone concentration by radioimmunoassay and the use of an indicator tape to obtain the pH of the vagina was performed eight times at four day intervals in the eight females, in a total of 64 samples for each exam. Data were analyzed, and significance was at 5%. There were no differences (P> 0.05) between measurements for serum progesterone concentrations and pH of the vagina. The correlations between body weight, progesterone, pH, and body mass index were not significant (P> 0.05). There was no significant oscillation of progesterone concentration and pH of the vagina in the pregnancy period studied.(AU)
Sujet(s)
Animaux , Protéines du sang/analyse , Cervidae/anatomie et histologie , Progestérone/analyse , Endocrinologie , Concentration en ions d'hydrogèneRÉSUMÉ
A coloração pela prata das regiões organizadoras de nucléolos (NORs) é caracterizada por marcar proteínas ligadas ao ácido ribonucleico ribossômico, avaliando a proliferação em células normais ou neoplásicas. Objetivou-se estudar, em testículos de ovinos obtidos em matadouro, a validade do uso da técnica de coloração pela prata (AgNOR) na identificação das regiões organizadoras de nucléolo (NORs) em células saudáveis da linhagem espermatogênica. Utilizaram-se 43 pares de testículos de ovinos mestiços entre seis e 10 meses de idade. Testes de Wilcoxon e Spearman foram empregados, com nível de 5%. As médias das NORs nas células das gônadas direita e esquerda foram, respectivamente: espermatogônia (8,77±1,14 e 9,04±0,96), espermatócitos (4,99±2,00 e 6,20±2,07; P<0,05), Leydig (8,05±2,82 e 7,89±2,29) e Sertoli (8,07±1,88 e 7,61±2,16; P<0,05). Houve correlação (P<0,05) entre os lados para o número de NORs: espermatócitos x Leydig (0,49); espermatócitos x Sertoli (0,49) e Leydig x Sertoli (0,96). Conclui-se ser válido o emprego da técnica AgNOR para avaliar o potencial proliferativo das células saudáveis em testículos de ovinos com prática execução e baixo custo.(AU)
The silver staining technique for AgNOR nucleolar organizer regions (NORs) is characterized by marking proteins linked to the ribosomal ribonucleic acid, evaluating cell proliferation. The aim was to study the validity of the AgNOR staining technique in the testicular cell proliferation in crossbred ovine. Forty-three pairs of ovine testicles between 6 and 10 months old were collected. Wilcoxon and Spearman tests were used with a significance level of 5%. The mean NORs count in cells of the right and left gonads were respectively: spermatogonia (8.77±1.14 and 9.04±0.96), spermatocytes (4.99±2.00 and 6.20±2.07, P<0.05), Leydig (8.05±2.82 and 7.89±2.29) and Sertoli cells (8.07±1.88 and 7.61±2.16; P<0.05). There was a correlation between the mean values for the right and left sides for the number of NORs (P<0.05) between Leydig x spermatocytes (0.49); spermatocytes x Sertoli (0.49) and Sertoli x Leydig (0.96). The study demonstrates that the AgNOR staining technique is indicated to evaluate the cell proliferative potential in ovine testis with practical implementation and low cost.(AU)
Sujet(s)
Animaux , Mâle , Testicule , Ovis , Nucléole/ultrastructure , Coloration à l'argent/médecine vétérinaire , Prolifération cellulaireRÉSUMÉ
Objetivou-se estudar a morfometria corpórea, as características do sêmen, o perfil proteico do plasma seminal em SDS-PAGE e a concentração sérica de testosterona em cervos-sambar (Cervus unicolor), criados em cativeiro, na estação reprodutiva da primavera. Quatro machos com idades entre 12 e 36 meses foram avaliados em quatro momentos, com intervalos de sete dias, com peso corpóreo (60,5 a 89,0kg), índice de massa corporal (93,07kg/m2 a 126,56kg/m2), volume do ejaculado (0,50±0,35mL a 0,75±0,28mL), motilidade espermática (87,75±4,78% a 90,00±7,07%), defeitos totais (17,25±5,81% a 47,72±17,55%), testosterona sérica (6,43±4,33ng/dL a 166,00±64,48ng/dL) e proteínas do plasma seminal com bandas entre 7,6 e 142kDa. As características dos ejaculados não diferiram (P>0,05) entre as três primeiras colheitas. Houve diferença (P<0,05) para os defeitos espermáticos com elevação na quarta colheita. No plasma seminal de cada cervo, foram identificadas de 16 a 27 bandas de proteínas entre 7,6 e 142kDa. Conclui-se que a qualidade espermática foi satisfatória na primavera. O estresse das contenções sucessivas causou queda da qualidade espermática. A idade influi na concentração sérica de testosterona, a qual foi maior nos cervos aos 36 meses...
The aim of this work was to study the body morphometry, semen characteristics, seminal plasma protein profile in SDS-PAGE and serum testosterone concentration in Sambar Deer (Cervus unicolor), in captivity in the breeding season (spring). Four males aged between 12 and 36 months were assessed in four moments with intervals of seven days with body weight (60.5 to 89.0kg), body mass index (93.07 to 126.56kg/m2), ejaculate volume (0.50±0.35mL to 0.75±0.28mL), sperm motility (87.75±4.78% to 90.00±7.07% ), total defects (17.25±5.81% to 47.72±17.55%), serum testosterone (6.43±4.33 ng/dL to 166.00±64.48ng/dL) and seminal plasma proteins with bands between 7.6 and 142 kDa. The characteristics of ejaculates did not differ (P>0.05) among ejaculates (1st, 2nd and 3rd). There were differences (P<0.05) for sperm defects elevation on the fourth ejaculate. In seminal plasma 16 to 27 protein bands between 7.6 and 142 kDa were identified. In conclusion, sperm quality was satisfactory in the spring and the stress of successive contentions decreased sperm quality. Also, there is influence of age upon serum testosterone concentration which was higher in deer at 36 months...
Sujet(s)
Animaux , Analyse du sperme/médecine vétérinaire , Cervidae , Capacitation des spermatozoïdes , Androgènes/analyse , Électrophorèse sur gel de polyacrylamide/médecine vétérinaire , Testostérone/analyseRÉSUMÉ
Estudou-se a influência das quatro estações do ano nas características do sêmen e nas concentrações de testosterona e cortisol em touros. Cinco touros Nelore e cinco Simental entre 48 e 72 meses de idade, criados extensivamente, foram avaliados andrologicamente por meio de exames físicos das características morfológicas do sêmen e das concentrações séricas de testosterona e cortisol. Houve redução na motilidade e no vigor do sêmen no inverno (P<0,05) na raça Simental. Observou-se correlação (P<0,01) entre testosterona x motilidade (0,69) e testosterona x vigor (0,57) na raça Simental, e cortisol x motilidade (0,68) e cortisol x vigor (0,65) na raça Nelore. O efeito das estações do ano modificou a qualidade do sêmen com aumento da motilidade e vigor espermáticos na primavera e verão nos touros Simental. A concentração de cortisol diminuiu no outono nos touros Nelore.
The influence of four seasons per year on semen characteristics and levels of testosterone and cortisol in Nelore and Simental bulls was studied. Five Nelore and five Simental bulls extensively managed, at 48-72 months old were evaluated for sexual soundness using physical and morphological characteristics of semen and serum levels of testosterone and cortisol. In Simental bulls there was decreased motility and vigor of semen (P<0.05) during winter. There was a correlation (P<0.01) between testosterone x motility (0.69) and testosterone x vigor (0.57) in the Simental breed and cortisol x motility (0.68) and cortisol x vigor (0.65) in Nelore the breed. The effect of seasons during the year changed the semen quality with increased sperm motility and vigor in spring-summe r in Simental bulls. The cortisol level decreased in autumn in Nelore bulls.
RÉSUMÉ
Foram utilizados 20 touros da raça Canchim em inatividade sexual, divididos em grupo 1 (G1), constituído de 10 animais com 14 meses de idade e grupo 2 (G2), com 10 animais de 48 meses de idade. A proposta desse estudo foi investigar as características dos ejaculados e das mensurações anatômicas do trato reprodutivo da raça Canchim. Os parâmetros obtidos foram: peso médio de 445,5 e 706,02 kg; circunferência escrotal de 31,80 e 36,25 cm e índice de massa corpórea de 270,33 e 346,73 kg/m2 para o G1 e G2, respectivamente, com diferenças significativas (p < 0,05) entre eles. Realizaram-se quatro colheitas de sêmen por touro por meio de eletroejaculação, com intervalos de 14 dias, verificando-se diferença significativa (p < 0,05) para os defeitos espermáticos totais, entre a primeira (5,48) e a terceira colheitas (1,08), no G2. Os resultados sugerem que o desenvolvimento do aparelho reprodutivo e a espermatogênese estão presentes aos 14 meses de idade.
Twenty bulls of the Canchin breed in sexual inactivity were divided in group 1(G1) with ten animals at the age of 14 months old and group 2 (G2) with ten animals at the age of 48 months old. The purpose of this study was to investigate the characteristics of the ejaculators and anatomic measurements of reproductive tract in Canchim breed. The parameters obtained were the average weight from 445.5 to 706.02 kg, scrotal circumference from 31.8 to 36.25 cm and Corporal Mass Index from 270.33 to 346.73 kg/m² for G1 and G2 respectively with a significant difference (p<0.05). Four semen collections per bull were made with electro ejaculation with intervals of 14 days, and it showed significant difference (p<0.05) for the total spermatic flaws, between the first (5.48) and the third collect (1.08) in G2. These results suggest that the development of the reproductive tract and the spermatogenesis are present at the age of 14 months old.
Fueron utilizados 20 toros de la raza Canchim en inactividad sexual, divididos en grupos:Grupo 1 (G1) con 10 animales, con edades de 14 meses y el grupo 2 (G2) con 10 animales, con edades de 48 meses, teniendo como objetivo verificar la adaptación al clima tropical, por medio de las características de los eyaculados y medidas anatómicas del aparato reproductivo. Los parámetros obtenidos fueron peso medio de 445,5 y 706,02 kg; circunferencia escrotal de 31,80 y 36,25 cm e índice de masa corpórea de 270,33 y 346,73 kg/m² para el G1 y G2, respectivamente, con diferencias significativas (p<0,05). Fueron realizadas cuatro colectas de semen por toro, con intervalo de 14 días, por medio de electroeyaculación verificando diferencias significativas (p<0,05) para los defectos espermáticos totales entre la primera (5,48) y la tercera colecta (1,08) en el G2. Los resultados sugieren que el desarrollo del aparato reproductor y la espermatogénesis están presentes a los 14 meses de edad.