Morphometric Investigation of the Brainof West African Dwarf Sheep in Nigeria

Olopade, James Olukayode; Onwuka, SK; Balogun, Babatunde Abiodun; Oke, B. O.

doi:10.4067/s0717-95022005000200001

Cited by 9 publications

(8 citation statements)

References 9 publications

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“…The length of the brain observed in the present investigation was slightly greater than the length of the brain observed in West African Dwarf goats (19) but less than that of Red Skoto goats (20) and West African Dwarf sheep (14). However, the length of the cerebrum and cerebellum was longer in the local × Jamunapari breed than those reported for West African Dwarf goats (19), Red Skoto goats (20), and West African Dwarf sheep (14) though it was closer to that of West African Dwarf sheep.…”

Section: Discussioncontrasting

confidence: 80%

“…The third slash was made just posterior to the horn and the fourth slash at a line joining the middle of the two auricular orifices. The maximum length and depth (cm) of the brain, cerebrum, and cerebellum were recorded in the sagittal section (14). The maximum depth and width (cm) of the brain in various transverse slices were also measured.…”

Section: Anatomical Considerationsmentioning

confidence: 99%

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Electroencephalographic electrode montage in goats: topographical, radiological, and physiological assessment

Madan¹,

Rastogi²,

Das³

et al. 2017

Turk J Vet Anim Sci

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The paucity of information on assortment of EEG leads in goats has hampered analysis of brain regional activity during different physiological, pathological, and ethological conditions in this species. Hence, the present study was designed to develop a montage with suitable combinations of EEG electrode arrays in goats. Ten specimens of freshly slaughtered goat heads (crossbreed of Jamunapari) were procured and preserved at -20 °C. Frozen samples were sliced sagittally and transversely to corroborate the link between intended topographic landmarks for EEG leads over the scalp and underlying provinces of the brain. Based on these observations, nine sites for EEG electrode placement were finalized so as to include the entire cerebral cortex. These electrode placement sites were further checked through another set of five goat heads. The electrode sites were then extrapolated to live animals for radiological (orthogonally) and physiological validation. The montage derived on basis on these electrode placement sites provided maximum brain coverage and they were found suitable for EEG in goats. Parietal and vertex areas of the brain were found to be most active during the resting phase with the right hemisphere exhibiting more activity than the left. The results indicated right hemisphere conservatism and an attentional process during the resting phase in goats.

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Section: Discussioncontrasting

confidence: 80%

Section: Anatomical Considerationsmentioning

confidence: 99%

Electroencephalographic electrode montage in goats: topographical, radiological, and physiological assessment

Madan¹,

Rastogi²,

Das³

et al. 2017

Turk J Vet Anim Sci

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show abstract

“…Na presente pesquisa, embora utilizando apenas animais adultos, foram observados, nos machos, maior índice da face enquanto as fêmeas apresentaram maior índice do crânio. Olopade et al (2005) realizaram a morfometria do encéfalo de ovinos separados por sexo, peso e idade e concluíram que não houve diferença nos parâmetros do encéfalo em relação ao sexo e a idade; entretanto, animais mais pesados apresentaram aumento no comprimento do encéfalo. Na presente investigação também não houve diferença nas medidas do encéfalo entre os sexos, com exceção da largura do hemisfério esquerdo que é maior nos machos quando comparado com o hemisfério esquerdo das femeas.…”

Section: Discussionunclassified

Craniometria, morfometria do encéfalo e tipologia do circuito arterial da base do encéfalo em gatos

Gomes

Moraes

Figueiredo

2015

RBCV

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“…Os resultados variam em precisão e ainda são motivos de discussão 14 . Olapade et al 15 realizaram morfometria do encéfalo de ovinos, separando-os por sexo, peso e idade, e concluíram que não houve diferença nos parâmetros do encéfalo em relação ao sexo e à idade; entretanto, animais mais pesados apresentaram aumento no comprimento do encéfalo. Na presente investigação, houve diferença entre os sexos no que se refere à largura do hemisfério esquerdo, hemisfério direito, e o comprimento do cerebelo, sendo que as fêmeas apresentaram maiores valores.…”

Section: Discussionunclassified

Morfometria do encéfalo e formação do circuito arterial em equinos mestiços

et al. 2014

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RESUMOO objetivo desta investigação foi caracterizar a morfometria do encéfalo e a formação do circuito arterial em equinos adultos mestiços de ambos os sexos. A fixação foi feita através de cânula plástica introduzida na artéria carótida comum com solução de formaldeído a 10%. Em seguida, foram feitas repleções vasculares com solução aquosa de Petrolátex S65 corado com pigmento Suvinil vermelho. Procedeu-se a craniotomia, remoção e morfometria dos encéfalos e dissecção para a observação das ramificações principais da artéria basilar e formação do circuito arterial. A média mais erro padrão da média do comprimento da artéria basilar foi de 3,629 cm ± 0,1550 nos machos e 4,423 cm ± 0,1990 nas fêmeas (p=0,0037). Em todos os equinos dissecados, a artéria basilar originouse da convergência das artérias vertebrais, emitindo a artéria cerebelar caudal, ramos variados para bulbo e ponte, ramos terminais e artérias cerebelares rostrais. As artérias da base do encéfalo estiveram na dependência dos sistemas carótico e vértebrobasilar. O circuito arterial do cérebro apresentou-se fechado rostral e caudalmente em 100% dos animais dissecados. PALAVRAS-CHAVE: cérebro, circuito arterial, equino MORPHOMETRY OF THE BRAIN AND ARTERIAL CIRCUIT FORMATION IN CROSSBREAD HORSE ABSTRACTThe aim of this study was to describe the main branches of the basilar artery, formation of the arterial circuit and the morphometry of the brain in adult crossbreed horses of both sexes. The setting was made by plastic tube inserted into the common carotid artery with 10% formaldehyde solution. After fixed, latex solution stained with pigment was injected. Craniotomy, morphometry of the brain and dissection were made to identify the main branches of the basilar arteries and the formation of the arterial circuit. The mean and standard error of the mean of the basilar artery was 3.629 cm ± 0.1550 in males and 4.423 cm ± 0.1990 in females (p=0.0037). In all animals the basilar artery originated from the fusion of the vertebral arteries giving rise to caudal cerebellar arteries, different numbers of branches to bulbus and pons, terminal branches and rostral cerebellar arteries. The arteries of the base of the brain depended on the carotid and vertebral-basilar systems. The brain circuit was closed rostrally and caudally in all horses.

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Morphometric Investigation of the Brainof West African Dwarf Sheep in Nigeria

Cited by 9 publications

References 9 publications

Electroencephalographic electrode montage in goats: topographical, radiological, and physiological assessment

Electroencephalographic electrode montage in goats: topographical, radiological, and physiological assessment

Craniometria, morfometria do encéfalo e tipologia do circuito arterial da base do encéfalo em gatos

Morfometria do encéfalo e formação do circuito arterial em equinos mestiços

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