A5072215651- Reproductive Physiology in Livestock
- Reproductive Biology and Fertility
- Sperm and Testicular Function
- Genetic and phenotypic traits in livestock
- Animal Genetics and Reproduction
- Effects of Environmental Stressors on Livestock
- Ovarian function and disorders
- Assisted Reproductive Technology and Twin Pregnancy
- Selenium in Biological Systems
- Ruminant Nutrition and Digestive Physiology
- Reproductive Health and Technologies
- Cassava research and cyanide
- Animal health and immunology
- Plant Toxicity and Pharmacological Properties
- Congenital Anomalies and Fetal Surgery
- Organ Transplantation Techniques and Outcomes
- Horticultural and Viticultural Research
- Rural Development and Agriculture
- Date Palm Research Studies
- Congenital gastrointestinal and neural anomalies
- Reproductive biology and impacts on aquatic species
- Magnetic and Electromagnetic Effects
- Food, Nutrition, and Cultural Practices
- Science and Education Research
- Science and Science Education
Universidade Federal do Vale do São Francisco
2009-2024
Universidade São Francisco
2018-2023
Universidade Estadual Paulista (Unesp)
2007-2014
Universidade do Vale do Sapucaí
2009
Núcleo de Pesquisas Aplicadas (Brazil)
2005
Universidade Estadual do Ceará
2003
Summary The present study aimed to investigate the effect of quercetin as an alternative antioxidant cysteamine on in vitro maturation. Oocytes were collected from goat ovaries, destined for maturation and distributed into three groups: CIS group, oocytes immersed MIV base medium; Groups Q4 Q8, medium adding 4 μM or 8 quercetin, respectively, cultured 24 h at 38.5°C with 5% CO 2 . groups presented same percentage expanded cumulus cells, but per cent Q8 group was significantly lower than that...
The objective was to evaluate if supplemental LH given at the end of FSH treatment would synchronize time ovulation and increase rate embryo yield in Santa Ines ewes. Twenty superovulatory (SOV) programs were accomplished cross-over design (60d interval). On D0, a CIDR device inserted, replaced with new one 7 days later, when 37.5µg d-cloprostenol administered. D12, we started SOV treatment, administering 256mg pFSH 8 times, 12h apart. D14, removed, 200IU eCG D15, ewes allocated into two...
<p>To evaluate the effect of pFSH dose on <em>in vivo </em>embryo production Dorper ewes in semi-arid northeast Brazil, 40 sheep females were distributed into two groups 20 animals that received intravaginal CIDR for 14 days, and days before device removal, they one following treatments: FSH200 group, 200 mg pFSH; FSH128 a total 128 decreasing doses every 12 h. Beginning h after conclusion treatments, estrus detection was performed four hours using rams proven fertility....
The objective of this study was to assess the reproductive response adult and prepubertal goats subjected repeated laparoscopic ovum pick-up (LOPU). animals were divided into two groups, specifically, nanny (GA, n=10) (GP, n=10), which estrous synchronization ovarian stimulation for LOPU. Both groups underwent six LOPU procedures at seven-day intervals subsequently controlled mating pregnancy diagnosis evaluate their future fertility. showed a reduction in number follicles visualized amount...
Descreve-se a técnica de biópsia hepática com agulha tru-cut guiada por videolaparoscopia em 12 caprinos machos, castrados, hígidos, sem raça definida, distribuídos dois grupos (G): G1, cinco animais meses e G2, sete seis idade. O procedimento foi realizado sob anestesia geral intravenosa o animal decúbito lateral esquerdo. pneumoperitônio laparoscopia foram procedidos no flanco direito, aproximadamente 10cm ventral aos processos transversos das vértebras lombares. A introduzida 11º espaço...
This study aimed to evaluate the return of post partum ovarian activity in dairy goats supplemented with different levels energy during dry period semi-arid region Pernambuco. Twenty-four animals were allocated into four treatments six each: Control, consisting that had access pasture and only received 4 kg fresh palm, three groups isoproteic supplementation (20% Crude Protein), ranging TDN content 65%, 75% 85%. The daily milk yield showed a linear growth behavior (P <0.05) since day 35th...
The aim of the present study was to evaluate influence water salinity on semen quality, and morphology apoptosis germinal epithelial cells in prepubertal Morada Nova male lambs. Thirty-two lambs were allocated into four treatments with different amounts sodium chloride (NaCl) added drinking simulate salinities; consequently, concentrations total dissolved solids (TDS) as follows: 640 (control), 3188; 5740 8326 mg/L TDS. After 78 days, sperm collected for analysis. animals slaughtered...
Os espermatozóides caprinos realizam a respiração mitocondrial, mantendo um balanço energético necessário para o transporte e as demais funções celulares. Um teste objetivo de avaliação quantitativa qualitativa da atividade mitocondrial em foi aplicado no sêmen nove reprodutores das raças Boer (n=5) Alpina (n=4) colhidos congelados diluidor TRIS duas estações. A colheita do realizada com auxílio vagina artificial, totalizando 135 ejaculados foram confeccionados esfregaços pós-colheita...
Objetivou-se, neste trabalho, avaliar o efeito do estresse calórico sobre a atividade reprodutiva de cabras SPRD aptidão leiteira, paridas no período seco semiárido pernambucano. Foram utilizados 24 animais divididos em 4 tratamentos: grupo controle, formado por que tiveram acesso apenas ao pasto e à palma in natura 3 grupos com suplementação feita concentrados isoproteicos (20% proteína bruta (PB), variando teor nutrientes digestíveis totais (NDT) 65, 75 85%. Os dados foram expressos média...
To evaluate the effect of pFSH dose on in vivo embryo production Dorper ewes semi-arid northeast Brazil, 40 sheep females were distributed into two groups 20 animals that received intravaginal CIDR for 14 days, and days before device removal, they one following treatments: FSH200 group, 200 mg pFSH; FSH128 a total 128 decreasing doses every 12 h. Beginning h after conclusion treatments, estrus detection was performed four hours using rams proven fertility. The mated at onset 24 later. Seven...
O objetivo desse trabalho foi avaliar o uso do ácido trans-ferúlico (ATF) na maturação in vitro de oócitos e produção embriões ovinos. Para isso, foram divididos em cinco grupos tratamento: grupo controle (CON), no qual imersos meio sem utilização antioxidantes, já cisteamina (CIS), os inclusos mesmo CON, mas contendo 100µM como fonte antioxidante; nos ATF10, ATF50 ATF100, 10µM, 50µM trans-ferúlico, respectivamente. A (MIV) realizada por 24h, a 38,5°C, com 5% dióxido carbono (CO2). Em...

 There have been few studies on the use of diets and strategies to reduce length postpartum anoestrus in dairy goats, especially tropical semi-arid regions. This review discusses factors influencing return ovarian activity goats. During period, goats are puerperal their reproductive tract is being prepared for a new conception. Anoestrus necessary tissue renewal uterus (uterine involution) associated with cyclic activity, influenced by such as suckling offspring, social interactions,...
The aim this study was to evaluate the effect of addition LH in superovulatory response and embryo production Santa Inês sheep. Ten donors with 60.3 ± 10.7 kg BCS 3.9 0.3 were superovulated a cross-over design, 60-day interval. Estrus synchronized progesterone-releasing intravaginal device (CIDR™; Pfizer Animal Health, Brazil) inserted on Day 0 replaced by new one 7, that maintained 14. Two doses 37.5 g D-cloprostenol (Prolise™, Arsa, Buenos Aires, Argentina) administered, Days 7 Donors also...
ABSTRACT This study was carried out to compare Day 0 and traditional protocols for in vivo embryo production. Twenty-two crossbred ewes were used as donors assigned two groups. Ewes from Traditional protocol submitted estrus synchronization with CIDR 14 days superovulation treatment induced 60 h before the withdrawal of 240 mg pFSH. Donors subjected a short-term (6 days) same other group, but it started 84 after withdrawal. Embryo recoveries performed using transcervical method. All (100%)...
Um dos fatores limitantes da reproducao caprina e a producao qualidade do semen. Na analise semen, avaliacao motilidade espermatica o procedimento mais comum usado para diagnosticar fertilidade macho. O objetivo deste estudo foi avaliar os efeitos raca, individuo, metodo de estacao ano (outono primavera)sobre motilidade. semen colhido machos caprinos das racas Boer (n=5) Alpina (n=4), com auxilio vagina artificial, totalizando 71 ejaculados obtidos no outono 64 na primavera. Apos colheita,...
This study aimed to evaluate the efficacy of adding sucrose in vitrification solution ovine embryos produced vivo. Forty Dorper ewes were selected and superovulated. Immediately prior embryo collection by laparotomy, a laparoscopy was performed verify superovulatory response. The recovered flushing followed evaluation divided two experimental groups where from Control group submitted traditional protocol Sucrose modified with sucrose. After warming, again regarding cryoprotectant removal...
<p>This study aimed to evaluate the efficacy of adding sucrose in vitrification solution ovine embryos produced <em>in vivo</em>. Forty Dorper ewes were selected and superovulated. Immediately prior embryo collection by laparotomy, a laparoscopy was performed verify superovulatory response. The recovered flushing followed evaluation divided two experimental groups where from Control group submitted traditional protocol Sucrose modified with sucrose. After warming, again...
O objetivo deste estudo foi avaliar o efeito da gonadotrofina coriônica equina (eCG) e humana (hCG), em substituição ao uso de hormônio folículo estimulante (FSH) na maturação in vitro (MIV) oócitos ovinos. Após a coleta ovários (n=300) ovinos, os complexos cúmulus-oócitos (CCOs) foram aspirados, selecionados divididos quatro grupos acordo com meio MIV: grupo CON, que utilizado MIV base; ECG, HCG FSH, imersos base adicionado 10 UI/mL eCG, hCG µg/mL FSH-p, respectivamente. A dos realizada...