Ewes
Mostrando 1-12 de 189 artigos, teses e dissertações.
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1. Avaliação da atividade funcional dos neutrófilos sanguíneos em ovelhas primíparas e pluríparas da raça Lacaune
ABSTRACT This study aimed to evaluate the neutrophil oxidative metabolism and phagocytosis of Zymonsan particles of primiparous and pluriparous Lacaune ewes during the first 30 days after lambing. A total of 20 ewes were evaluated, 10 primiparous (GPR) and 10 pluriparous (GPL). Evaluation of basal oxidative metabolism was performed using the nitroblue tetraz
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2020-09
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2. MONITORING OF PROGESTERONE AND ESTRONE FECAL METABOLITES THROUGHOUT GESTATION IN EWES
Resumo O objetivo deste estudo foi monitorar os níveis de metabólitos fecais de progesterona e estrona ao longo da gestação em ovelhas, correlacionando-os com os níveis séricos desses hormônios esteroides. Assim, amostras de fezes e sangue foram colhidas de cinco ovelhas no período pré-cobertura e durante a gestação, até duas semanas após o part
Ciênc. anim. bras.. Publicado em: 13/12/2019
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3. Comparison of electrolyte and acid-base balances of Dorper breed ewes between single and twin pregnancies
RESUMO: Durante a gestação ocorrem modificações metabólicas nas ovelhas que podem predispor a ocorrência de transtornos metabólicos, dos quais se destaca a toxemia da prenhez (TP). A hemogasometria é um exame que detecta alterações nos equilíbrios ácido-básico e eletrolítico de forma eficaz. Os objetivos deste estudo foram estudar os equilíbri
Pesq. Vet. Bras.. Publicado em: 02/12/2019
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4. Effects of long-term controlled internal drug release reuse on reproductive performance, hormone profiles, and economic profit of sheep
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 sam
R. Bras. Zootec.. Publicado em: 28/11/2019
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5. Energetic metabolism in fasting sheep: regularization of metabolic profile by treatment with oral glucose, with prior handling of gastric groove
ABSTRACT The objective of this research was to evaluate a possible corrective measure against negative metabolic states, as occurs in the advanced stage of gestation in ewes, and that sometimes produces a disease called pregnancy toxaemia. In the present research, we found that the joint administration of i.v. lysine-vasopressin (0.08 IU/kg body weight, BW)
R. Bras. Zootec.. Publicado em: 28/11/2019
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6. Echotextural characteristics of the mammary gland during early lactation in two breeds of sheep varying in milk yields
Abstract The main goal of this preliminary study was to determine and compare ultrasonographic characteristics of the mammary gland in two genotypes of ewes varying in milk productivity at 2, 3 and 4 weeks after lambing. Ultrasonographic images of the udder were obtained using the 5.0- and 7.5-MHz transducers, in axial and coronal planes, in four low milk-yi
Anim. Reprod.. Publicado em: 25/11/2019
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7. Relationship between fetal biometric assessment by ultrasonography and neonatal lamb vitality, birth weight and growth
Abstract Ultrasonographic examination of pregnant ewes can enable the identification of perinatal abnormalities and establish prenatal assistance responsible for minimizing morbidity and perinatal mortality. Therefore, we aimed to evaluate the feasibility of a fetal biometric analysis by ultrasonography to predict neonatal vitality and lamb growth during the
Anim. Reprod.. Publicado em: 25/11/2019
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8. Vitrified embryo transfer in Merino sheep under extensive conditions
Abstract The aim was to evaluate pregnancy success after transfer of embryos vitrified in micropipette tips in Merino sheep under extensive conditions. A second objective was to evaluate the influence of embryo stage in such pregnancy rate. One hundred and twenty-seven embryos were rewarmed and transferred into recipient ewes. On rewarming, the embryos were
Anim. Reprod.. Publicado em: 25/11/2019
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9. Differential expression of T helper cytokines in the liver during early pregnancy in sheep
Abstract Liver plays important roles in the innate and adaptive immunity, and contributes to the maternal immune adjustments during pregnancy in mice and rats. T helper 1 (Th1) and Th2 cytokines are related to immune response. However, expression of Th1 and Th2 cytokines in maternal livers is unclear during early pregnancy in sheep. In this study, livers wer
Anim. Reprod.. Publicado em: 25/11/2019
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10. Partial replacement of soybean meal with pea grains and sunflower cake in ewe diets: milk quality and blood biochemical parameters
ABSTRACT The objective of this research was to evaluate the effect of pea and sunflower cake as partial replacement for soybean meal in diet, as well as to assess their effect on milk quality during lactation and on blood parameters of ewes kept in organic farming. The research was carried out with 30 ewes of Merinolandschaf breed during 75 days. Ewes were g
R. Bras. Zootec.. Publicado em: 28/10/2019
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11. Comparação dos parâmetros bioquímicos entre gestação única e gemelar de ovelhas da raça Dorper durante gestação, parto e pós-parto
RESUMO Nas ovelhas, a demanda de nutrientes aumenta durante a gestação, especialmente nas últimas seis semanas, quando ocorre maior desenvolvimento do feto. Os objetivos deste trabalho foram estudar o perfil bioquímico de ovelhas durante a gestação e no periparto imediato, comparando-se gestação única com gemelar. Foram utilizadas 60 ovelhas, Dorper
Arq. Bras. Med. Vet. Zootec.. Publicado em: 10/10/2019
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12. Effectiveness of a low-dose Norgestomet ear implant in short-term protocols to induce estrus in ewes during the non-breeding season in Brazil.
ABSTRACT The objective of this study was to evaluate the reproductive performance of ewes subjected to a short-term protocol for estrus induction using 1 mg of Norgestomet during the non-breeding season in Brazil. A total of 84 ewes were randomly divided into two equal groups (n = 42 per group). Controlled Internal Drug Release (CIDR) containing 330 mg proge
R. Bras. Zootec.. Publicado em: 03/10/2019