Real time B-mode ultrasound in pacas pregnancy (Agouti paca, Linnaeus, 1766)

Oliveira, Fabrício Singaretti de; Machado, Márcia Rita Fernandes; Canola, Júlio Carlos

doi:10.1590/s1413-95962003000100009

Cited by 11 publications

(8 citation statements)

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“…Desta maneira, obteve-se duração média de 148,6 + 4,8 dias (142 -154 dias). Tais resultados foram condizentes com a média de 155 dias (138 -173 dias) obtida por Smythe (1991), 145 a 155 dias relatada por Rengifo et al (1996), 150 dias observada por Nogueira (1997), 135 a 139 dias observada por Oliveira et al (2003) e, superiores a média de três meses e meio (Pérez & Hernandez, 1979), de 118 dias (Kleiman et al, 1979) e de 114 dias (Matamoros & Pashov, 1984;Matamoros, 1985;Vergara, 1988).…”

Section: Período Gestacional E Distribuição Anual Dos Nascimentosunclassified

Características reprodutivas da paca fêmea (Agouti paca) criada em cativeiro

et al. 2008

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O objetivo do trabalho foi estudar a biologia reprodutiva da Agouti paca criada em cativeiro. Os resultados demonstraram que, a duração média do ciclo estral foi de 32,5 + 3,7 dias e o período gestacional de 148,6 + 4,8 dias. O intervalo entre partos foi de 224,5 + 52,2 dias e o primeiro cio pós-parto foi de 25,6 + 8,8 dias. A maioria (55,6 %) das fêmeas apresentou dois partos por ano, com o nascimento de um filhote por parto, sendo 44,7 % fêmeas e 55,3 % machos. Ao nascer o peso médio das fêmeas foi de 605,9 + 87,5 g e dos machos 736,7 + 108,4 g (P < 0,05). A puberdade das fêmeas ocorreu entre o 8º e 12º mês, porém neste aspecto são necessárias investigações mais detalhadas.

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Section: Período Gestacional E Distribuição Anual Dos Nascimentosunclassified

Características reprodutivas da paca fêmea (Agouti paca) criada em cativeiro

et al. 2008

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“…There are several reports about reproduction of experimental rodents (mice, rats and guinea pigs), however few with spotted paca. Gestational monitoring and evaluation of the oestrous cycle have been performed, but none of them related to the recovery, evaluation and maturation of oocytes, or hormonal protocols for these purposes (Guimarães et al, ; Nogueira et al, ; Oliveira, Machado, & Canola, ; Ribeiro et al, ). We hypothesized that gonadotropin treatments would induce a great number of observed follicles, recovered oocytes and mature oocytes rates than untreated animals.…”

Section: Introductionmentioning

confidence: 99%

Ovum pick‐up and in vitro maturation in spotted paca (Cuniculus paca—Linnaeus, 1766)

Barros

Teixeira²,

Padilha-Nakaghi

et al. 2020

Reprod Domestic Animals

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We tested FSHp, eCG and FSHp + eCG to establish ovum pick‐up (OPU) and in vitro maturation method in spotted paca. Eight healthy adult females were subjected to each of four treatments to stimulate ovarian follicular growth. All females were subjected to a hormonal protocol using a single dose of 45 mg of injectable progesterone and single intramuscular injection of 0.075 mg d‐cloprostenol on day 6. Ovarian stimulation was carried out as follows: in Group TFE (FSHp and eCG), animals were treated with a single dose of 80 mg of FSHp and 200 IU of eCG intramuscularly on day 6 after the application of progesterone; in Group TF (FSHp), they were treated with a single dose of 80 mg of FSHp intramuscularly on day 6 after application of progesterone; in Group treatment eCG, they were treated with 200 IU of eCG intramuscularly on day 6 after application of progesterone; and in Group TC (saline solution), 1 ml of saline solution was administered to control does. The OPU was performed between 22 and 26 hr after gonadotropin treatments. All recovered oocytes were placed into maturation media and incubated for 24 hr. There were no differences among the mean number of observed follicles, aspirated follicles and oocytes recovered per treatment. Oocyte maturation rates did not differ among groups, except, TF and treatment eCG oocytes had greater maturation rates than TC oocytes. In this study, gonadotropin administration failed to superovulate treated does and increase oocyte retrieval efficiency. Despite the feasibility of the procedure, further studies are needed to develop and refine hormonal protocols for oocyte recovery and in vitro maturation in this species.

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“…Previous ultrasonographic studies on wild species that discuss morphological aspects of abdominal structures include those on ant eaters Myrmecophaga tridactyla (Lopes et al 2015), crab-eating foxes Cerdocyon thous (Silva et al 2014), pacas Cuniculus paca (Oliveira et al 2003, agoutis Dasyprocta prymnolopha (Sousa et al 2012(Sousa et al , 2016(Sousa et al , 2017, coatis Nasua nasua (Ribeiro et al 2013), collared peccary Tayassu tajacu (Peixoto et al 2012), robust capuchin monkey Cebus apella (Alves et al 2007), cheetahs Acinonyx jubatus (Carstens et al 2006) and common marmosets Callithrix jacchus (Wagner & Kirberger 2005).…”

Section: Introductionmentioning

confidence: 99%

Abdominal B-mode and Doppler ultrasonography of chemically restrained agouti (Dasyprocta prymnolopha Wagler, 1831)

et al. 2018

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Agoutis are small-sized wild animals whose body weight can reach up to 4kg, and are found throughout Brazil. They are considered important seed dispersers, especially for big trees and there are species that rely almost exclusively on these animals for their territorial distribution. The objective of the present study was B scan and Doppler ultrasound characterization of the abdominal organs of healthy agoutis reared in captivity. Fifteen agoutis, chemically restrained, were used from the Nucleus for Wild Animal Studies and Conservation (Núcleo de Estudos e Preservação de Animais Silvestres - NEPAS), CCA-UFPI, submitted to B scan and Doppler ultrasound examination. The urinary bladder wall was hyperechogenic, thin, smooth and regular throughout its anatomic path, with 0.09±0.03cm mean thickness. The kidneys showed fine and homogeneous echotexture, preserved global echogenicity, hyperechogenic in relation to the spleen and isoechogenic or discreetly hyperechogenic in relation to the liver. The spectral Doppler trace showed systolic and diastolic peaks, wide and thread-like, with low flow resistance and a continuous and full diastolic portion that decreased gradually during the diastole (75.83±1.42cm/s, for the right kidney and 80.43±1.22cm/s, for the left kidney). The right adrenal gland was 0.61-1.18cm long and 0.17-0.32cm in diameter, while the left adrenal gland was 0.62-1.16 long with 0.14-0.25cm diameter. The agouti spleen was filiform in shape, with pointed poles and 1.02±0.18cm in diameter. The agouti liver occupied all the abdominal cavity cranial space in direct contact with the diaphragm. The intrahepatic vascular flow allowed individualization of the portal vein (PV) and hepatic vein (HV). The portal veins were distinguished from the hepatic veins mainly by their wall echogenic pattern. The pancreas was 0.51±0.1 cm thick and the pancreatic duct measured 0.12±0.02cm. The stomach was placed to the left the spleen and to the right of the proximal intestine and the transversal colon and the walls were 0.16±0.05cm thick. The abdominal aorta was 0.43±0.04cm in diameter and showed 95.2±2.16cm/s vascular flow. This study characterized agouti organs and abdominal blood vessels by B scan and Doppler ultrasound, that permitted definition of the size, shape, position, echogenicity and echotexture of the anatomic constituents and established reference values for the vascular network and blood flow in the species.

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Real time B-mode ultrasound in pacas pregnancy (Agouti paca, Linnaeus, 1766)

Cited by 11 publications

References 0 publications

Características reprodutivas da paca fêmea (Agouti paca) criada em cativeiro

Características reprodutivas da paca fêmea (Agouti paca) criada em cativeiro

Ovum pick‐up and in vitro maturation in spotted paca (Cuniculus paca—Linnaeus, 1766)

Abdominal B-mode and Doppler ultrasonography of chemically restrained agouti (Dasyprocta prymnolopha Wagler, 1831)

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