Consulta: subjectFacets:"Estrus"
Registros recuperados: 10
Data/hora: 10/06/2024 09:07:18

Comportamiento productivo y reproductivo de ovinos de lana locales en la región de Tlatlauquitepec, Puebla.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Castro González, Numa Pompilio.
El objetivo fue determinar la ganancia diaria de peso (GDP) de corderos de lana locales (criollos) y de pelo, así como, el comportamiento reproductivo de ovejas de lana locales de la región de Tlatlauquitepec, Puebla. Dos experimentos fueron conducidos: en el primero, 40 corderos locales de lana y 40 de pelo, se sometieron a pastoreo y confinamiento. El diseño experimental fue en bloques completamente al azar con arreglo factorial 2 x 2, donde el tipo genético y la alimentación fueron los factores a probar. El factor alimentación fue determinante (P&lt;0.0001) en obtener ganancias de peso diferenciadas. La GDP fue mayor en corderos alimentados en confinamiento. El tipo genético influenció (P&lt;0.01) la GDP donde, los corderos de pelo en pastoreo tuvieron...
Palavras-chave: Ovinos criollos; Ganancia diaria de peso; Sincronización; Creole sheep; Estro; Daily liveweight gain; Synchronization; Estrus; EDAR; Maestría Tecnológica; Desarrollo y Gestión de Sistemas Ganaderos.
Ano: 2010
URL: http://hdl.handle.net/10521/327

Improving the Reproductive Efficiency of the Goat: Vaginal Cytology and Vulvar Biometry as Predictors of Synchronized Estrus/Breeding Time in West African Dwarf Goat
Provedor de dados: International Journal of Morphology
Autores: Leigh,Olufisayo Oluwadamilare; Raheem,Ayobami Kabir; Oluwadamilare Olugbuyiro,Joseph Adebisi.
The characteristics of exfoliated vaginal cells and vulvar biometry following estrus synchronization via two injections of 5mg Lutalyse® administered 7 days apart were investigated with the aim of their possible use to predict estrus in six adult WAD does. Four adult WAD bucks recently passed as satisfactory potential breeders were also involved in the study. The animals were maintained on 12% crude protein concentrate, greens and fresh water ad libitum. All measurements in the does were taken at an interval of 24 hours for six days beginning with the day of 2nd Lutalyse® injection. The does were introduced to the bucks 48 hours after the 2nd dose of Lutalyse® and separated from them after the 6th day. The 72-96 and 96-120 hours vaginal smears of 5 does...
Tipo: Journal article
Palavras-chave: Vaginal cytology; Vulva biometry; Synchronization; Lutalyse®; Predict; Estrus; Doe.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300042

MORPHOMETRIC ANALYSIS OF THE DEVELOPMENT OF THE OVARIAN FOLLICLES IN PINEALECTOMIZED RATS
Provedor de dados: International Journal of Morphology
Autores: Pereira dos Santos,Katharine Raquel; Coelho Teixeira,Álvaro Aguiar; da Silva Neto,Eulâmpio José; Teixeira,Valéria Wanderley; da Cunha,Franklin Magliano.
The present study had the objective of analyzing morphometrically the occupied area by the ovarian follicles in ovaries of pinealectomized female rats. To do so, 24 albino female rats (Rattus norvegicus albinus) were used, which were equally divided in the following groups: Group I ­ sham-pinealectomized rats and kept in the light/dark cycle (12/12 hours), for three months; Group II ­ pinealectomized rats and kept in the light/dark cycle (12/12 hours), for three months; Group III ­ pinealectomized rats and kept in the absence of light for three months; Group IV ­ sham-pinealectomized rats and kept in the absence of rats for three months. The results showed that the groups I and IV presented, respectively, average of 19,00 and 25,00, while groups II and III...
Tipo: Journal article
Palavras-chave: Pinealectomy; Ovaries; Morphometric; Estrus.
Ano: 2004
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000200001

Reproduction and Trypanosoma congolense in Nigerian West African Dwarf ewes:I. Effects on the estrous cycle
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Abubakar, Y.U.; Oyedipe, E.O.; Eduvie, L.O.; Ogwu, D.O.; Adeyeye, A.A.
Ten cycling Nigerian West African Dwarf (WAD) ewes were used to determine the effect of Trypanosoma congolense infection on the estrous cycle. The estrus of ewes were synchronized using intravaginal progesterone sponges and divided into 2 groups (A and B) of 5 ewes each after 54 days (3 cycles). The ewes in group A were inoculated with blood containing approximately 5×105 trypanosomes per ml of blood while ewes in group B served as the uninfected control. All the ewes were monitored from infection till the end of the study (56 days). Ewes in the infected group had silent estrus with clinical trypanosomosis that was characterized by undulating parasitemia, intermittent pyrexia, anemia and weight loss. There was no statistical (p &gt; 0.05) difference...
Palavras-chave: Infertility; Estrous cycle; Estrus; Trypanosoma congolense; West African dwarf ewe.
Ano: 2015
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4244

Reproductive performance of Santa Inês ewes fed protected fat diet
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Costa,Ricardo Lopes Dias da; Fontes,Reginaldo da Silva; Cunha,Eduardo Antonio da; Bueno,Mauro Sartori; Quirino,Celia Raquel; Afonso,Vivian Alves Costa; Otero,Walter Guimarães; Santos,Luis Eduardo dos; Dias,Ângelo José Burla.
The objective of this work was to evaluate the reproductive performance of Santa Inês ewes fed a diet supplemented with protected fat. Intervals from lambing to first clinical estrus and to conception, conception rate, prolificacy, live weight and body condition were determined. After lambing, 60 ewes and their offsprings were weighted and randomly assigned to three treatments, based on age, body weight and number of born lambs. Treatments consisted of: control diet, or control diet plus 30 g of protected fat, from lambing to day 25 of post-lambing (Sup25), or to day 60 of post-lambing (Sup60). Out of 60 evaluated ewes, 93.3% returned to estrus, and 74.5% got pregnant, with 73.53% lambing rate and 196.5 days lambing interval. The average periods from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovis aries; Conception rate; Estrus; Lambing interval; Nutrition.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000600013

Prostaglandin F2α or estradiol benzoate to induce ovulation in timed artificially inseminated dairy cows
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Pfeifer,Luiz Francisco Machado; Siqueira,Luiz Gustavo Bruno; Arashiro,Eduardo Kenji Nunes; Castro,Natália Ávila de; Viana,João Henrique Moreira.
Abstract: The objective of this work was to compare two types of ovulation inducers - estradiol benzoate (EB group) or prostaglandin F2α (PG group) -, in postpartum dairy cows subjected to timed artificial insemination (TAI). Lactating Holstein-Gir crossbred cows (n=118) with 60 to 120 days of milk production were used in this study. All cows were treated with an intravaginal progesterone-releasing device (CIDR) plus 2 mg of estradiol benzoate (EB) on day 0. The CIDR inserts were removed on day 9, and all cows received 500 µg sodium cloprostenol. Twenty-four hours after CIDR removal, cows were randomly assigned into two treatment groups and were given either 1 mg of EB i.m. (EB group) or 500 µg sodium cloprostenol i.m. (PG group). TAI were performed at 52...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial insemination; Cattle; Estrus; Synchronization; Withdrawal period.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000600738

Effects of long-term controlled internal drug release reuse on reproductive performance, hormone profiles, and economic profit of sheep
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Swelum,Ayman Abdel-Aziz; Saadeldin,Islam M.; Moumen,Abdullah F.; Ali,Mohamed; Ba-Awadh,Hani; Alowaimer,Abdullah N.
ABSTRACT Fifty-seven multiparous Awassi ewes in the breeding season were used to compare the effects of controlled internal drug release (CIDR) reuse on hormone profiles, reproductive performance, and economic production. Ewes were randomly allotted to one of three CIDR treatments: new (control), once-used, and twice-used; treatment lasted 12 days. Blood samples were collected from all groups at the time of CIDR insertion, three and six days following insertion, at withdrawal time, and at insemination. Serum estradiol (E2) and progesterone (P4) concentrations were measured. Timed insemination was performed 48 h post CIDR withdrawal in all groups. Pregnancy was diagnosed by ultrasonography at day 23 post insemination. No significant differences were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conception; Estradiol; Estrus; Progesterone; Synchronization; Twining.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100607

Follicle-stimulating hormone to substitute equine chorionic gonadotropin in the synchronization of ovulation in Santa Inês ewes
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Cardoso Neto,Bianor Matias; Barbosa,Larissa Pires; Aguiar,Cristiane da Silva; Souza,Rosiléia Silva; Santana,Ana Lúcia Almeida; Mendes,Claudinéia Silva; Dutra,Patrícia Alves; Leite,Meiby Carneiro de Paula.
The substitution of equine chorionic gonadotropin (eCG) by follicle-stimulating hormone (FSH) in protocols for synchronization of ovulation in Santa Inês ewes was assessed. Ten females were submitted to the insertion of intravaginal sponges containing 60 mg medroxyprogesterone acetate for 10 days; after this period sponges were withdrawn and the animals were randomly divided into two groups. Group 1 (n = 5): intramuscular injection of 0.5 mL d-cloprostenol and 300 UI eCG; Group 2 (n = 5): intramuscular injection of 0.5 mL d-cloprostenol and 20 mg FSH. Interval between sponge withdrawal and estrus beginning was 27.7 h and 35.9 h for eCG and FSH, respectively. Interval between sponge withdrawal and the end of estrus was 55.8 h for eCG treatment and 55.6 h...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrus; Follicular dynamics; Real-time ultrasound.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300018

Digestibilidade aparente, crescimento folicular e concentração de metabólitos sanguíneos de éguas recebendo concentrado com semente de linhaça integral (Linum usitatissimum L.) - DOI: 10.4025/actascianimsci.v31i2.598
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: Soncin, Mara Regina Schimmack Pedro; UEM - Programa de Pós-Graduação em Zootecnica; Furtado, Carlos Eduardo; UEM -Maringá; Silva, Alessandra Aparecida; UEM; Rigolon, Luis Paulo; UEM; Cavalieri, Fabio Luiz Bim; CESUMAR; Moraes, Gentil Vanini de; UEM-PPZ.
O experimento foi realizado para se avaliar a inclusão da semente de linhaça integral na dieta de éguas por meio da avaliação dos coeficientes de digestibilidade aparente dos nutrientes e seu efeito no crescimento folicular e na concentração de metabólitos sanguíneos. Foram utilizadas 16 éguas, alimentadas com dois concentrados, sendo um sem semente de linhaça integral e outro com 10% de semente de linhaça integral, utilizando-se delineamento inteiramente casualizado. Foram avaliados os coeficientes de digestibilidade aparente (CDa) para a MS, MM, PB, FB, FDN, FDA e EE. Para determinação dos parâmetros reprodutivos (duração do estro, intervalo entre aplicação da prostaglandina F2  alfa e o estro e tamanho do folículo ovulatório) e sanguíneos (glicose,...
Palavras-chave: 5.04.03.00-1 colesterol; Éguas; Estro; Linhaça; Digestibilidade aparente Nutrição e Alimentação Animal cholesterol; Mares; Estrus; Linseed; Apparent digestibility.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/598

Effects of prostaglandin administration 10 days apart on reproductive parameters of cyclic dairy nulliparous goats
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Fonseca,J.F.; Maffili,V.V.; Santos,A.D.F.; Fürst,R.; Prosperi,C.P.; Rovay,H.; Souza,J.M.G.; Torres,C.A.A.
This study reported the effects of prostaglandin (PGF2a) administration 10 days apart on reproductive parameters of cyclic artificial inseminated (AI) nulliparous Alpine (n=9) and Saanen (n=9) goats. Animals received two doses of 22.5mg PGF2a 10 days apart. After 1st and 2nd PGF2a administrations, estrus was monitored at 12 h intervals, with a buck teaser. Plasma progesterone concentration (ng/mL) was determined from blood sampled on day 0 (1st PGF2a) and the following 5, 10 (2nd PGF2a), 15, 20, 25 and 30 days. After the onset of the second estrus, females were transrectally (5 MHz probe) scanned at 4 hour intervals until at least 8h after ovulation. Pregnancy was checked through transrectal ultrasound on days 20, 25, 30, 35 and 90 after insemination. All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrus; Ovulation; Progesterone; Embryo loss; Goat.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000200014