Consulta: creatorFacets:"Zanella,Adroaldo José"
Registros recuperados: 3
Data/hora: 11/06/2024 01:24:48

Peripheral regulation of stress and fear responses in pigs from tail-biting pens
Provedor de dados: 96
Autores: Zupan,Manja; Zanella,Adroaldo José.
ABSTRACT This study focused on stress physiology by characterizing cortisol responses to stressors in tail biters (n = 10), victims (n = 10), and control pigs (n = 10) of two different breeds (Landrace × Yorkshire, LY; Landrace/Yorkshire × Landrace/Duroc; LYLD) and sexes (females and castrated males). We exposed pigs to 10 min of isolation with a human at the farm and transported them to a controlled environment. There, the behaviour was registered for 10 min during sessions when subjected to a novel object test and to a novel arena test. Sampling times of salivary cortisol were in all the fear tests before testing and 60 min thereafter, while for transportation as well 120 min after the beginning of transportation. We additionally measured cortisol at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Damaging behaviour; Emotions; Genotype; Salivary cortisol; Stressors.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100033

Does high stereotypic behavior expression affect productivity measures in sows?
Provedor de dados: 96
Autores: Tatemoto,Patricia; Bernardino,Thiago; Rodrigues,Frederico Augusto Mazzocca Lopes; Zanella,Adroaldo José.
ABSTRACT The objective of this study was to evaluate the effects of stereotypic behavior on productivity measures in sows. Frequent expression of stereotypies by pigs has been reported, even when pigs are not maintained in crates. This behavior is only observed in animals kept in captivity and is a wide-range welfare indicator, since it is considered to develop in situations of chronic stress or frustration. When comparing groups of sows showing low or high frequency of stereotypy expression, we found that stereotypic behavior did not affect productivity. Moreover, it did not affect physiological welfare indicators, such as salivary cortisol concentration or glucocorticoids in the placenta. There were no differences in productivity parameters, including...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glucocorticoids; Pigs; Placenta; Stereotypies; Welfare.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100201

Behaviour, heart rate, and heart rate variability in pigs exposed to novelty
Provedor de dados: 96
Autores: Zupan,Manja; Framstad,Tore; Zanella,Adroaldo José.
ABSTRACT In the present study, we investigated behavioural responses and determined parameters of heart rate variability (HRV) to elucidate a relative activation of autonomic nervous system (ANS) during baseline (10 min) and in response to potentially stressful situations (10 min) in two pig breeds and sexes. Gilts (n = 21) and barrows (n = 9) of the Landrace × Yorkshire (LY; n = 15) and Landrace/Yorkshire × Landrace/Duroc (LYLD; n = 15) breeds were subjected to a novel object test (NOT) and a novel arena test (NAT). Basal ANS state differed in pigs across breeds but not sexes. Landrace × Yorkshire pigs had a significantly lower basal heart rate (HR) and low-frequency band (LF) with a higher root mean square of successive interbeat intervals (RMSSD) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breed; Sus scrofa.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000300121