Base de dados : MEDLINE
Pesquisa : D10.251.355.255.550.775.500.175 [Categoria DeCS]
Referências encontradas : 1265 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 127 ir para página                         

  1 / 1265 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28380602
[Au] Autor:Vallet JL; Miles JR
[Ti] Título:The effect of farrowing induction on colostrum and piglet serum immunocrits is dependent on parity.
[So] Source:J Anim Sci;95(2):688-696, 2017 Feb.
[Is] ISSN:1525-3163
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Farrowing induction is a common practice among swine producers to manage timing of farrowing and the labor associated with farrowing. In this experiment, the effect of induction of labor using cloprostenol on Day 114 of gestation ( = 88) was compared to our standard farrowing protocol at USMARC (natural farrowing with induction using cloprostenol on Day 116 if needed, = 82) in gilts and sows up to fourth parity. In a subset of dams ( = 10 each treatment), colostrum was collected within 30 min of birth of the first piglet, and at 4, 8, 12, and 24 h. Colostrum samples were measured for immunoglobulin G (IgG) using the immunoglobulin immunocrit and porcine IgG specific ELISA, and for total protein. Blood samples were collected from each live piglet on d 1 of age and measured using the immunocrit assay, and average immunocrit was calculated for each litter. Total piglets born and born alive, birth and weaning weights, and the stillbirth rate and preweaning mortality rate were also recorded for each litter. Results indicated that induction of farrowing by cloprostenol treatment on d 114 reduced average gestation length by 0.5 to 1 d depending on parity ( < 0.05), and reduced overall colostrum immunocrit, IgG and total protein ( < 0.05). Colostrum immunocrits and IgG concentrations were well correlated ( = 0.89; < 0.01) but IgG was curvilinearly related to total protein. Litter average immunocrits were similar in gilts between treatments, but were reduced in later parity sows induced to farrow using cloprostenol on d 114 of gestation. Total born, born alive, birth and weaning weights, and stillbirth and preweaning mortality rates were unaffected by treatments. In conclusion, induction of farrowing using cloprostenol injection on d 114 reduced colostrum IgG concentrations in dams, but this was reflected in a reduction in litter average immunocrit only in later parity sows. This reduction in litter average immunocrit was not sufficient to influence preweaning mortality, but other effects are possible given the reported influence of colostrum on growth and reproductive traits.
[Mh] Termos MeSH primário: Colostro/química
Imunoglobulina G/sangue
Trabalho de Parto Induzido/veterinária
Paridade
Suínos/fisiologia
[Mh] Termos MeSH secundário: Animais
Cloprostenol/farmacologia
Ensaio de Imunoadsorção Enzimática/veterinária
Feminino
Imunoglobulina G/metabolismo
Luteolíticos/farmacologia
Parto
Gravidez
Suínos/sangue
Suínos/imunologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Immunoglobulin G); 0 (Luteolytic Agents); 4208238832 (Cloprostenol)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170718
[Lr] Data última revisão:
170718
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170406
[St] Status:MEDLINE
[do] DOI:10.2527/jas.2016.0993


  2 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
[PMID]:28373728
[Au] Autor:Colazo MG; Mapletoft RJ
[Ad] Endereço:Livestock Research Branch, Alberta Agriculture and Forestry, Edmonton, Alberta T6H 5T6 (Colazo); Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B4 (Mapletoft).
[Ti] Título:Pregnancy per AI in Holstein heifers inseminated with sex-selected or conventional semen after estrus detection or timed-AI.
[So] Source:Can Vet J;58(4):365-370, 2017 Apr.
[Is] ISSN:0008-5286
[Cp] País de publicação:Canada
[La] Idioma:eng
[Ab] Resumo:This study compared pregnancy per AI (P/AI) of heifers inseminated with sex-selected or conventional semen after estrus detection (ED) or timed-AI (TAI). Heifers in the ED group received 2 treatments with prostaglandin F2α 14 d apart and those in the TAI group received a modified 5-day Co-synch protocol plus an intravaginal progesterone releasing insert device (PRID) and were inseminated 72 h after PRID removal. Overall P/AI were 69.2% (74/107) and 64.1% (75/117) for conventional and sex-selected semen ( > 0.05). Although P/AI in ED heifers following the use of conventional semen were numerically higher (75.0% 63.6%), P/AI with sex-selected semen were almost identical (65.0% 63.2%) for ED and TAI heifers. Pregnancy losses from first pregnancy diagnosis to term did not differ between ED and TAI heifers (6.0% 11.3%). In summary, heifers subjected to TAI with sex-selected semen following the application of a modified 5-day Co-synch plus PRID protocol had acceptable P/AI.
[Mh] Termos MeSH primário: Bovinos/fisiologia
Detecção do Estro
Inseminação Artificial/veterinária
Prenhez/fisiologia
[Mh] Termos MeSH secundário: Aborto Animal
Animais
Cloprostenol/administração & dosagem
Dinoprosta/administração & dosagem
Feminino
Inseminação Artificial/métodos
Gravidez
Progesterona/administração & dosagem
Pré-Seleção do Sexo/veterinária
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
4208238832 (Cloprostenol); 4G7DS2Q64Y (Progesterone); B7IN85G1HY (Dinoprost)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171001
[Lr] Data última revisão:
171001
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170405
[St] Status:MEDLINE


  3 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28166963
[Au] Autor:Vilariño M; Cuadro F; Dos Santos-Neto PC; García-Pintos C; Menchaca A
[Ad] Endereço:Instituto de Reproducción Animal Uruguay - Fundación IRAUy, Montevideo, Uruguay. Electronic address: mvilarinio@gmail.com.
[Ti] Título:Time of ovulation and pregnancy outcomes obtained with the prostaglandin-based protocol Synchrovine for FTAI in sheep.
[So] Source:Theriogenology;90:163-168, 2017 Mar 01.
[Is] ISSN:1879-3231
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The objective of the present study was to determine the ovarian response induced with the prostaglandin-based protocol Synchrovine (two doses of PGF given 7 d apart), as well as the fertility after FTAI. In Experiment 1, 15 females received the Synchrovine protocol using two different PGF analogues (Delprostenate vs. D-Cloprostenol). No differences in estrus response, time of ovulation and follicular dynamics were found between both groups (P < 0.05). The ovulation after Synchrovine was synchronized in a similar mean interval (68.8 ± 7.1 h) than when the females received a single dose of PGF (70.2 ± 20.7 h; P=NS), but the dispersion between the first and the last ovulation was reduced with this protocol (range 60-84 h vs. 24-96 h, respectively; P < 0.05). In experiment 2, 318 ewes were treated with the Synchrovine protocol and cervical FTAI was performed using different sperm cell concentrations. Pregnancy rate was higher using 200 × 10 and 100 × 10 sperm cells (38.2%, 39/102; and 34.9%, 38/109, respectively) than using 50 × 10 (23.4%, 25/107, P < 0.05). In Experiment 3, 444 ewes received the Synchrovine protocol and were assigned to receive 300 IU of eCG or not at the moment of the second dose of PGF , and cervical FTAI was performed 42 h or 48 h after the second dose of PGF . No effect was found related to the eCG administration nor the time of insemination. In Experiment 4, 342 received cervical or intrauterine insemination after treatment with the Synchrovine protocol, resulting in greater pregnancy rate for intrauterine insemination than cervical insemination (52.5%, 90/171 vs. 31%, 53/171, P < 0.05). These experiments demonstrate that the Synchrovine protocol effectively induces luteolysis, estrus and ovulation in most of the treated females, and ovulation is synchronized into a narrow window of 24 h. Pregnancy rate obtained with cervical FTAI is around 30-45%, with similar results using 100 × 10 or 200 × 10 sperm cells, the eCG administration seems not to be necessary, the type of PGF2α analogue does not appear relevant, and fertility is improved with intrauterine semen deposition.
[Mh] Termos MeSH primário: Cloprostenol/administração & dosagem
Dinoprosta/análogos & derivados
Inseminação Artificial/veterinária
Ovulação/efeitos dos fármacos
Resultado da Gravidez/veterinária
Prostaglandinas F Sintéticas/administração & dosagem
Carneiro Doméstico/fisiologia
[Mh] Termos MeSH secundário: Animais
Dinoprosta/administração & dosagem
Sincronização do Estro/métodos
Feminino
Fertilidade/efeitos dos fármacos
Inseminação Artificial/métodos
Gravidez
Taxa de Gravidez
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Prostaglandins F, Synthetic); 4208238832 (Cloprostenol); B7IN85G1HY (Dinoprost); M99W4Q30OL (delprostenate)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171113
[Lr] Data última revisão:
171113
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170208
[St] Status:MEDLINE


  4 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27865408
[Au] Autor:García Mitacek MC; Bonaura MC; Praderio RG; Nuñez Favre R; de la Sota RL; Stornelli MA
[Ad] Endereço:Catedra y Servicio de Reproducción Animal, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Argentina; CONICET, CABA, Capital Federal, Argentina.
[Ti] Título:Progesterone and ultrasonographic changes during aglepristone or cloprosternol treatment in queens at 21 to 22 or 35 to 38 days of pregnancy.
[So] Source:Theriogenology;88:106-117, 2017 Jan 15.
[Is] ISSN:1879-3231
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Progesterone (P ) is a requirement for pregnancy development. Previous reports observed a maximal value of serum P concentration on 21 days after the first mating after which it slowly declines throughout the rest of pregnancy. Ultrasound examination should be performed to ensure that pregnancy interruption is complete. Limited information is available on the ultrasonic appearance of conceptuses during pregnancy termination in cats The objective was to study serum P concentration and ultrasonographic changes during aglepristone (ALI) or cloprostenol (CLO) treatment and to evaluate the fertility after treatment. Two experiments (EXP) were carried out to accomplish this aim. Sixty queens, 12- to 36-month-old, were used. On Days 21 to 22 of pregnancy (EXP I) or 35 to 38 of pregnancy (EXP II), queens were divided into three groups (G). Queens in G1 received ALI (10 mg/kg, sc; EXP I, n = 10; EXP II, n = 10) for 2 consecutive days. Queens in G2 received CLO (5 µg/kg, sc; EXP I, n = 10; EXP II = 10) for 3 consecutive days. Queens in G3 received 1 mL of saline solution (PLA, sc; EXP I, n = 10; EXP II = 10). Blood samples were taken before treatment (Day 0) and every day during 10 days after the treatment to measure serum P concentrations. Likewise, after treatment, queens were monitored daily by ultrasonography for 10 days and weekly until the end of gestation to obtain gestational sacs measurements (GS), fetal measurements, and fetal biophysical profile. Data were analyzed by ANOVA. Serum P concentrations were significantly different on Day 6 (EXP I) and on Day 1 (EXP II) in ALI and CLO groups compared with PLA group (P < 0.05 and P < 0.01; respectively). The ultrasonographic monitoring during treatment allowed assessing changes in the GS and fetal measurements, embryo-fetal viability, and risk of pregnancy loss. In conclusion, the results from this study reported changes in serum P concentration and in ultrasonography measurements during pregnancy interruption with ALI or CLO treatment. Also it was observed that ALI and CLO are safe drugs and can preserve posttreatment queen fertility. Therefore, the results obtained in our work will be applied in feline reproduction practice.
[Mh] Termos MeSH primário: Cloprostenol/farmacologia
Estrenos/farmacologia
Progesterona/metabolismo
Ultrassonografia Pré-Natal/veterinária
[Mh] Termos MeSH secundário: Abortivos/farmacologia
Aborto Animal/induzido quimicamente
Animais
Gatos
Feminino
Fertilidade/efeitos dos fármacos
Luteolíticos/farmacologia
Masculino
Gravidez
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Abortifacient Agents); 0 (Estrenes); 0 (Luteolytic Agents); 0UT4JLE1CM (aglepristone); 4208238832 (Cloprostenol); 4G7DS2Q64Y (Progesterone)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170512
[Lr] Data última revisão:
170512
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161121
[St] Status:MEDLINE


  5 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27743689
[Au] Autor:Carvalho NA; Soares JG; Souza DC; Maio JR; Sales JN; Martins Júnior B; Macari RC; D'Occhio MJ; Baruselli PS
[Ad] Endereço:Unidade de Pesquisa e Desenvolvimento de Registro-Polo Regional do D.S.A. do Vale do Ribeira/APTA, Registro, São Paulo, Brazil. Electronic address: nelcio@apta.sp.gov.br.
[Ti] Título:Ovulation synchronization with estradiol benzoate or GnRH in a timed artificial insemination protocol in buffalo cows and heifers during the nonbreeding season.
[So] Source:Theriogenology;87:333-338, 2017 Jan 01.
[Is] ISSN:1879-3231
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The aim of this study was to compare estradiol benzoate (EB) and GnRH for the induction of ovulation in a TAI protocol in buffalo during the nonbreeding season. In experiment 1, 141 buffaloes (56 cows and 85 heifers) received an intravaginal P4 device (1.0 g) plus EB (2.0-mg, intramuscular [im]) at random stage of the estrous cycle (Day 0). On Day 9, the P4 device was removed, and buffaloes were given PGF (0.53-mg im sodium cloprostenol) plus eCG (400-IU im). Buffaloes were then randomly allocated to one of three groups and treated as follows: EB24 (n = 47), EB (1.0 mg im) 24 hours after P4 device removal; EB36 (n = 50), EB 36 hours after P4 device removal; GnRH48 (n = 44), GnRH (10 µg im buserelin acetate) 48 hours after P4 device removal. Ultrasound examinations were performed on Day 0 to ascertain ovarian follicular status, Day 9 to measure follicular diameter, and from Day 11 to Day 14 (every 12 hours for 60 hours) to establish the time of ovulation. There were no significant differences between EB24, EB36, and GnRH48 for diameter of the ovulatory follicle (13.1 ± 0.3, 13.7 ± 0.3, and 13.7 ± 0.3 mm; P = 0.26) and ovulation rate (78.7%, 82.0%, and 84.1%; P = 0.93). When compared with heifers, cows had a greater diameter of the dominant follicle on Day 9 (10.3 ± 0.3 and 8.6 ± 0.2 mm; P = 0.0001), diameter of the ovulatory follicle (14.1 ± 0.3 and 13.1 ± 0.2 mm; P = 0.01), ovulation rate (91.1% and 75.3%; P = 0.02), and interval from P4 device removal to ovulation (76.3 ± 1.3 and 72.5 ± 1.4 hours; P = 0.05). In experiment 2, 511 buffaloes (354 cows and 157 heifers) were assigned to the same treatments described in experiment 1 (EB24, n = 168; EB36, n = 172; and GnRH48, n = 171), and all animals were submitted to timed artificial insemination (TAI) 64 hours after P4 device removal. Pregnancy diagnosis was undertaken 30 days after TAI. There were no significant differences between EB24, EB36, and GnRH48 for pregnancy rate (45.2%, 43.0%, and 49.7%; P = 0.46), and the pregnancy rate did not differ (P = 0.31) for cows (47.5%) and heifers (42.7%). The findings from the two experiments indicated that EB (24 or 36 hours) and GnRH (48 hours) induce comparable follicular responses, ovulation, and pregnancy rates in buffalo cows and heifers. Although there were some differences in the follicular responses between cows and heifers, the pregnancy rate to TAI was nonetheless similar.
[Mh] Termos MeSH primário: Búfalos/fisiologia
Busserrelina/farmacologia
Gonadotropina Coriônica/farmacologia
Cloprostenol/farmacologia
Estradiol/análogos & derivados
Sincronização do Estro/métodos
[Mh] Termos MeSH secundário: Animais
Busserrelina/administração & dosagem
Gonadotropina Coriônica/administração & dosagem
Cloprostenol/administração & dosagem
Esquema de Medicação
Estradiol/administração & dosagem
Estradiol/farmacologia
Feminino
Inseminação Artificial/veterinária
Ovário/diagnóstico por imagem
Ovário/efeitos dos fármacos
Ovário/fisiologia
Gravidez
Progesterona/farmacologia
Estações do Ano
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Chorionic Gonadotropin); 1S4CJB5ZGN (estradiol 3-benzoate); 4208238832 (Cloprostenol); 4G7DS2Q64Y (Progesterone); 4TI98Z838E (Estradiol); PXW8U3YXDV (Buserelin)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170425
[Lr] Data última revisão:
170425
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161017
[St] Status:MEDLINE


  6 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27312927
[Au] Autor:Oliveira JD; Fonseca JF; Souza-Fabjan JM; Esteves LV; Feres LF; Rodrigues CA; Torres Filho RA; de Oliveira J; Brandão FZ
[Ad] Endereço:Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
[Ti] Título:Protected fatty acid supplementation during estrus synchronization treatment on reproductive parameters of dairy goats.
[So] Source:Anim Sci J;88(2):254-258, 2017 Feb.
[Is] ISSN:1740-0929
[Cp] País de publicação:Australia
[La] Idioma:eng
[Ab] Resumo:This study evaluated the effect of the protected fatty acid inclusion during estrus synchronization on reproductive parameters. Goats (n = 32) received progestagen sponges for 6 days and 200 IU equine chorionic gonadotropin and 30 µg d-cloprostenol were given on Day 5. No difference was found among control (C), 1% protected fatty acid inclusion (C + 1%) or 4% protected fatty acid inclusion (C + 4%) groups, respectively, in estrus (100.0, 100.0 or 90.9%), estrus duration (31.6 ± 12.3; 43.2 ± 12.9 or 40.8 ± 14.1 h), animals ovulating (100.0, 90.0 or 100.0%) or ovulation rate (1.3 ± 0.5; 1.1 ± 0.3 or 1.2 ± 0.4). The interval from sponge removal to ovulation and from estrus to ovulation, respectively, were shorter for C + 4% (45.2 ± 8.0 h; 18.3 ± 11.0 h) compared with C (56.3 ± 12.6 h; 30.6 ± 10.5 h) or C + 1% (57.7 ± 8.7 h; 30.3 ± 11.1 h). The average ovulatory follicle diameter was smaller for C + 4% (6.2 ± 0.7 mm) than C (7.5 ± 0.8 mm), but similar to C + 1% (7.0 ± 1.5 mm). Insulin, insulin-like growth factor 1, glucose and progesterone concentrations were similar among groups. The inclusion of protected fatty acid during synchronization treatment promoted no benefits on ovulation rate, but 4% anticipated the ovulation time.
[Mh] Termos MeSH primário: Dieta/veterinária
Suplementos Nutricionais
Sincronização do Estro
Estro
Ácidos Graxos/administração & dosagem
Cabras/fisiologia
Ovulação
[Mh] Termos MeSH secundário: Animais
Gonadotropina Coriônica
Cloprostenol
Indústria de Laticínios
Progestinas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chorionic Gonadotropin); 0 (Fatty Acids); 0 (Progestins); 4208238832 (Cloprostenol)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170316
[Lr] Data última revisão:
170316
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160618
[St] Status:MEDLINE
[do] DOI:10.1111/asj.12640


  7 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27145891
[Au] Autor:Bates AJ; Kenyon AG; Laven RA; McDowell JC
[Ad] Endereço:a Centre for Dairy Excellence , 20 Wilson Street, Geraldine 7930 , New Zealand.
[Ti] Título:Resynchronising returns to service in anoestrous dairy cows in the South Island of New Zealand.
[So] Source:N Z Vet J;64(5):268-74, 2016 Sep.
[Is] ISSN:1176-0710
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:AIMS: To investigate the effect of targeted resynchronisation of cows treated for non-observed oestrus before the planned start of mating (PSM), that were not detected in oestrus or pregnant 23 days after treatment (phantom cows), on the proportion pregnant at 42 days after PSM and the end of mating. METHODS: Farm staff from eight herds in two regions of the South Island of New Zealand identified 1,819 cows not showing oestrus by 10 days before PSM. These cows were treated with intravaginal progesterone for 7 days, and I/M gonadorelin 10 days and 1 day before PSM. Three days before PSM they were injected with cloprostenol and equine chorionic gonadotrophin, with fixed time artificial insemination (FTAI) at PSM. By 23 days after PSM, 1,218 cows had not returned to oestrus. Of these, 161 cows confirmed not pregnant by transrectal ultrasonography were randomly assigned to no treatment (control group; n=74) or were resynchronised 25 days after PSM using the same treatment programme as above, with FTAI 35 days after PSM (n=87). All cows that returned to oestrus were artificially inseminated until 42 days after PSM, when natural mating was used. All cows were examined using transrectal ultrasonography 80 to 90 days after PSM to confirm conception dates. RESULTS: Of the 1,819 anoestrous cows treated before PSM, 526 (29 (95% CI=23.1-34.0)%) had not been observed in oestrus by 23 days after PSM and had not conceived, so were diagnosed as phantoms cows. For resynchronised cows, 42/87 (48 (95% CI=37.8-58.8)%) were pregnant by 42 days after PSM compared to 21/74 (28 (95% CI=18.1-38.7)%) control cows (p=0.009). At the end of mating 58/87 (67 (95% CI=56.6-76.7)%) cows in the resynchronised group were pregnant and 46/74 (62 (95% CI=50.9-73.2)%) in the control group (p=0.554). The hazard of conception from 21 to 42 days after PSM was 1.9 (95% CI=1.07-3.12) times greater for resynchronised than control cows (p=0.026). CONCLUSION: In cows not observed in oestrus and treated before PSM, resynchronisation increased the proportion pregnant by 42 days after PSM. CLINICAL RELEVANCE: The benefit of resynchronisation depends on the number of anoestrous cows before PSM and the number of phantom cows after PSM. However at the herd-level it is likely that providing advice to reduce the known risk factors for cows not being observed in oestrus before the PSM may well be more cost effective than identifying and treating a sub-population of phantom cows.
[Mh] Termos MeSH primário: Anestro
Sincronização do Estro/métodos
[Mh] Termos MeSH secundário: Administração Intravaginal
Animais
Bovinos
Gonadotropina Coriônica/uso terapêutico
Cloprostenol/administração & dosagem
Cloprostenol/uso terapêutico
Indústria de Laticínios/métodos
Feminino
Hormônio Liberador de Gonadotropina/administração & dosagem
Hormônio Liberador de Gonadotropina/uso terapêutico
Injeções Intramusculares/veterinária
Inseminação Artificial/métodos
Inseminação Artificial/veterinária
Nova Zelândia
Gravidez
Progesterona/administração & dosagem
Progesterona/uso terapêutico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chorionic Gonadotropin); 33515-09-2 (Gonadotropin-Releasing Hormone); 4208238832 (Cloprostenol); 4G7DS2Q64Y (Progesterone)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170206
[Lr] Data última revisão:
170206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160506
[St] Status:MEDLINE
[do] DOI:10.1080/00480169.2016.1184108


  8 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27118386
[Au] Autor:Viana JHM; Vargas MSB; Siqueira LGB; Camargo LSA; Figueiredo ACS; Fernandes CAC; Palhao MP
[Ad] Endereço:Embrapa, Juiz de Fora, MG, Brazil; Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Alegre, ES, Brazil. Electronic address: henrique.viana@embrapa.br.
[Ti] Título:Efficacy of induction of luteolysis in superovulated cows is dependent on time of prostaglandin F2alpha analog treatment: effects on plasma progesterone and luteinizing hormone profiles.
[So] Source:Theriogenology;86(4):934-939, 2016 Sep 01.
[Is] ISSN:1879-3231
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The objectives were to (1) evaluate the effectiveness of induction of luteolysis in superovulated (SOV) cows at two distinct time points after embryo flushing; and (2) compare the pattern of LH release after treatment with PGF in cows with single vs. multiple ovulations. In the first experiment, Holstein cows were SOV with 400 IU of FSH following standard procedures. Uterine flushing for embryo recovery was performed 7 days after artificial insemination (Day 0), and cows were randomly allocated into two groups to receive PGF (0.5-mg sodium cloprostenol, intramascular) either immediately after flushing (Day 7 group, N = 19) or 4 days later (Day 11 group, N = 20). Time of luteolysis was determined on the basis of plasma progesterone (P4) concentrations. There was no difference (P > 0.05) in plasma P4 before treatment between Day 7 and Day 11 groups. A decline in plasma P4 was observed 48 hours after PGF treatment in both the groups (P < 0.0001). In Day 11 cows, P4 continued to decrease thereafter, whereas Day 7 animals had no further reduction in plasma P4. Luteolysis (P4 < 1 ng/mL) occurred in all Day 11 cows. In the Day 7 group, however, luteolysis failure was observed for 11 of 19 cows (57.9%). In cows without luteolysis, plasma P4 increased after the initial PGF-induced decline. The second experiment compared luteolysis in (SOV, N = 6) vs. non-SOV (control, N = 8) cows. Both groups received a single PGF treatment on Day 11 after estrus, and luteolysis was monitored daily by ovarian ultrasonography and plasma P4 measurements. In addition, plasma LH was measured in blood samples taken every 20 minutes for 1 hour during five consecutive days after treatment. A similar percentage of reduction in P4 was observed in both groups 24 hours after treatment; however, SOV cows only reached plasma P4 values similar (P > 0.05) to controls 96 hours after treatment. There was no difference in initial LH values between SOV and controls (P > 0.05). The slower decrease in plasma P4 in the SOV group prevented an increase in LH for up to 96 hours after luteolysis induction, whereas LH values increased (P < 0.05) in controls 24 hours after treatment. In conclusion, (1) luteolysis may fail or be incomplete when PGF treatment is given on the day of uterine flushing (Day 7) in SOV cows; (2) induction of luteolysis 4 days later (Day 11) is effective, but the initial high-plasma P4 concentrations result in a slower slope of P4 decline to basal levels, and consequently, delayed increase in LH pulses.
[Mh] Termos MeSH primário: Bovinos/fisiologia
Cloprostenol/farmacologia
Hormônio Luteinizante/sangue
Luteólise/efeitos dos fármacos
Progesterona/sangue
Superovulação/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Bovinos/sangue
Cloprostenol/administração & dosagem
Feminino
Hormônio Foliculoestimulante/farmacologia
Luteolíticos/administração & dosagem
Luteolíticos/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Luteolytic Agents); 4208238832 (Cloprostenol); 4G7DS2Q64Y (Progesterone); 9002-67-9 (Luteinizing Hormone); 9002-68-0 (Follicle Stimulating Hormone)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170913
[Lr] Data última revisão:
170913
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160428
[St] Status:MEDLINE


  9 / 1265 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27030200
[Au] Autor:Jeong JK; Choi IS; Kang HG; Hur TY; Kim IH
[Ad] Endereço:Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea.
[Ti] Título:Effects of gonadotropin-releasing hormone administration or a controlled internal drug-releasing insert after timed artificial insemination on pregnancy rates of dairy cows.
[So] Source:J Vet Sci;17(4):577-582, 2016 Dec 30.
[Is] ISSN:1976-555X
[Cp] País de publicação:Korea (South)
[La] Idioma:eng
[Ab] Resumo:This study investigated the effects of gonadotrophin-releasing hormone (GnRH) administration (Experiment 1) and a controlled internal drug-releasing (CIDR) insert (Experiment 2) after timed artificial insemination (TAI) on the pregnancy rates of dairy cows. In Experiment 1, 569 dairy cows that underwent TAI (day 0) following short-term synchronization with prostaglandin F were randomly allocated into two groups: no further treatment (control, n = 307) or injection of 100 µg of gonadorelin on day 5 (GnRH, n = 262). In Experiment 2, 279 dairy cows that underwent TAI (day 0) following Ovsynch were randomly allocated into two groups: no further treatment (control, n = 140) or CIDR insert treatment from days 3.5 to 18 (CIDR, n = 139). The probability of pregnancy following TAI did not differ between the GnRH (34.4%) and control (31.6%, > 0.05) groups. However, the probability of pregnancy following TAI was higher (odds ratio: 1.74, < 0.05) in the CIDR group (51.1%) than in the control group (39.3%). Overall, CIDR insert treatment at days 3.5 to 18 increased pregnancy rates relative to non-treated controls, whereas a single GnRH administration on day 5 did not affect the pregnancy outcomes of dairy cows.
[Mh] Termos MeSH primário: Bovinos/fisiologia
Cloprostenol/farmacologia
Hormônio Liberador de Gonadotropina/farmacologia
Luteolíticos/farmacologia
Taxa de Gravidez
[Mh] Termos MeSH secundário: Animais
Anticoncepcionais/administração & dosagem
Estradiol/administração & dosagem
Estradiol/análogos & derivados
Feminino
Inseminação Artificial/veterinária
Gravidez
Reprodução/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Contraceptive Agents); 0 (Luteolytic Agents); 1S4CJB5ZGN (estradiol 3-benzoate); 33515-09-2 (Gonadotropin-Releasing Hormone); 4208238832 (Cloprostenol); 4TI98Z838E (Estradiol)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170426
[Lr] Data última revisão:
170426
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160401
[St] Status:MEDLINE
[do] DOI:10.4142/jvs.2016.17.4.577


  10 / 1265 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26963045
[Au] Autor:Kuhl J; Nagel C; Ille N; Aurich JE; Aurich C
[Ad] Endereço:Artificial Insemination and Embryo Transfer, Vetmeduni Vienna, Vienna, Austria. Electronic address: juliane.kuhl@vetmeduni.ac.at.
[Ti] Título:The PGF2α agonists luprostiol and d-cloprostenol reliably induce luteolysis in luteal phase mares without evoking clinical side effects or a stress response.
[So] Source:Anim Reprod Sci;168:92-9, 2016 May.
[Is] ISSN:1873-2232
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In the present study we have evaluated a possible stress reaction in response to two different PGF2α analogs-luprostiol and D-cloprostenol--and their effects on estrous cycle characteristics. In a cross-over-design eight mares received in alternating order either luprostiol (Treatment LUP; 3.75 mg im), D-cloprostenol (Treatment CLO; 22.5µg im) or saline (Treatment CON; NaCl 0.9% 0.5ml im) on day 8 after ovulation. Injection of either LUP or CLO, but not of CON resulted in a significant decline of progesterone concentration in plasma to baseline concentrations within two days (time: p<0.001, treatment: p<0.01, time × treatment: p<0.05). The treatment to ovulation interval was significantly shorter in LUP and CLO than in CON cycles (LUP: 9.4 ± 0.4 d; CLO: 9.4 ± 1.3 d; CON: 16.1 ± 0.8 d; p<0.001). Injection of either LUP or CLO, but not of CON significantly increased salivary cortisol concentration (immediately before injection: CON 1.3 ± 0.2, LUP 1.4 ± 0.3, CLO 1.4 ± 0.3 ng/ml; 60 min after injection: CON 1.0 ± 0.3, LUP 8.0 ± 1.4, CLO 4.2 ± 0.7 ng/ml; time: p<0.01, treatment: p<0.001, time × treatment: p<0.001). Heart rate decreased over time (p<0.05) independent of treatment and no changes in heart rate variability were detected. Injection of the PGF2α analogs CLO and LUP reliably induced luteolysis and apart from a transient increase in salivary cortisol concentration no signs of a physiological stress response or apparent side effects occurred.
[Mh] Termos MeSH primário: Cloprostenol/farmacologia
Dinoprosta/agonistas
Luteólise/efeitos dos fármacos
Prostaglandinas F Sintéticas/farmacologia
[Mh] Termos MeSH secundário: Animais
Comportamento Animal/efeitos dos fármacos
Cloprostenol/efeitos adversos
Feminino
Frequência Cardíaca/efeitos dos fármacos
Cavalos/fisiologia
Fase Luteal/efeitos dos fármacos
Fase Luteal/fisiologia
Prostaglandinas F Sintéticas/efeitos adversos
Temperatura Cutânea/efeitos dos fármacos
Estresse Fisiológico/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Prostaglandins F, Synthetic); 4208238832 (Cloprostenol); B7IN85G1HY (Dinoprost); HWR60H5GZB (luprostenol)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160311
[St] Status:MEDLINE



página 1 de 127 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde