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Conspecific and heterospecific alarm substance induces behavioral responses in piau fish Leporinus piau [PDF]

Acta Ethologica, 2010
In ostariophysan fish, the detection of alarm substance released from the skin of a conspecific or a sympatric heterospecific may elicit alarm reactions or antipredator behavioral responses. In this study, experiments were performed to characterize and quantify the behavioral response threshold of Leporinus piau, both individually and in schools, to ...
Augusto Barbosa Junior, Elisângela Jaqueline MAGALHÃES, Anette Hoffmann   +2 more
exaly   +4 more sources

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Estimation of genetic parameters and inbreeding depression in Piau pig breed

Tropical Animal Health and Production, 2022
This study is aimed at estimating genetic parameters, effective population size, inbreeding, and inbreeding depression for birth weight, weaning weight, and average pre-weaning daily weight gain (ADG) in Piau pigs. We used information from 3841 Piau pigs, and four linear models were fitted in single-trait analyses, including or excluding maternal ...
Letícia Fernanda de Oliveira, Paulo Sávio Lopes, Layla Cristien Cássia Miranda Dias, Leandro Magno Dornelas e Silva, Hugo Teixeira Silva, Simone Eliza Facioni Guimarães, Daniele Botelho Diniz Marques, Delvan Alves da Silva, Renata Veroneze   +8 more
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Effects of heat stress on performance and thermoregulatory responses of Piau purebred growing pigs

Journal of Thermal Biology, 2021
The study of how different breeds adapt to heat stress and the further understanding of mechanisms underlying pigs thermotolerance is of utmost importance to attenuate the negative effects of heat stress on pigs welfare, physiology, and performance.
Alípio dos Reis Teixeira, Renata Veroneze, Vinícius Eduardo Moreira, Lorena Duarte Campos, Sábata Cristina Januário Raimundi, Paulo Henrique Reis Furtado Campos   +5 more
openaire   +3 more sources

Duration of spermatogenesis and sperm transit time through the epididymis in the Piau boar

Tissue and Cell, 1998
The Piau boar is a rustic breed of economical importance in Brazil. The duration of spermatogenesis and sperm transit through the epididymis in Piau boars was estimated using intratesticular injections of tritiated thymidine. Animals were sacrificed 1 h, 7 days, 14 days, 21 days, 34 days, and 36 days after injections.
L R, França, F M, Cardoso
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Cryopreservation of Piau‐Breed Wild Boar Sperm: Assessment of Cooling Curves and Centrifugation Regimes

Reproduction in Domestic Animals, 2015
ContentsThis study aimed to assess the effects of different cooling curves and centrifugation regimes used in cryopreservation protocols on the post‐thaw viability of Piau‐breed wild boar (Sus scrofa) sperm using in vitro assessment tests. Two centrifugations (800 g for 10 min and 2400 g for 3 min) and two cooling curves (conventional cooling using ...
H H, Shiomi, R O, Pinho, Dma, Lima, J B, Siqueira, McR, Santos, E V, Costa, P S, Lopes, Sef, Guimarães, J D, Guimarães   +8 more
openaire   +3 more sources

Effect of different cryo-protectants on the viability of frozen/thawed semen from boars of the Piau breed

Animal Reproduction Science, 2014
The objective of this study was to evaluate the effect of different cryo-protectants (glycerol, dimethylacetamide and dimethylformamide alone or combined and added to lactose-egg yolk extender) on the viability of frozen/thawed semen from the Piau breed as assessed by in vitro testing. Frozen semen samples (n=20) were used from five male swine.
R O, Pinho, D M A, Lima, H H, Shiomi, J B, Siqueira, H T, Silva, P S, Lopes, S E F, Guimarães, J D, Guimarães   +7 more
openaire   +3 more sources