Browsing by Author "Lemos Teixeira, Dayane"

Now showing 1 - 7 of 7
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    Are views towards egg farming associated with Brazilian and Chilean egg consumers’ purchasing habits?
    (2018) Lemos Teixeira, Dayane; Larraín Prieto, Rafael; Hotze, María José
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    Meat Consumers' Opinion Regarding Unhealthy Pigs: Should They Be Treated with Antibiotics or Euthanized on Farm?
    (2021) Lemos Teixeira, Dayane; Enriquez-Hidalgo, Daniel; Estay Espinoza, Tamara; Bas, Fernando; Hotzel, Maria Jose
    The aim of this study was to investigate the opinions of meat consumers (n = 1780) on on-farm management of unhealthy pigs, whether support for treatment with antibiotics varies according with chance of recovery, and the effect of knowledge on the use of antibiotics on these opinions. Most participants believed that the use of antibiotics was the best solution for unhealthy pigs, and this was associated with a low level of knowledge about antibiotics. Increasing the probability of recovery after treatment increased support for treating pigs with antibiotics. However, the majority of participants rejected the consumption of meat from animals housed in "hospital pens". After price, concern with food safety was the second main factor that influenced participants' choice when buying meat. Support for the use of antibiotics to deal with unhealthy pigs in "hospital pens", as well as for consumption of the meat from these animals, was higher among participants involved in agriculture. This shows that consumers are unaware of the potential negative repercussions for animal welfare associated with banning or reducing the use of antibiotics in livestock production, which is an important concern for the industry.
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    Public opinion towards castration without anaesthesia and lack of access to pasture in beef cattle production
    (2018) Lemos Teixeira, Dayane; Larraín Prieto, Rafael; Melo Contreras, Óscar; Hotzel, María José
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    Relationship between tail lesions and lung health in slaughter pigs
    (2016) Van Staaveren, Nienke; Vale, Ana P.; Manzanilla, Edgar G.; Lemos Teixeira, Dayane; Leonard, Finola C.; Hanlon, Alison; Boyle, Laura A.
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    Social hierarchy and feed supplementation of heifers : Line or piles?
    (2019) Schenato Bica, Gabriela; Lemos Teixeira, Dayane; Hotzel, Maria Jose; Pinheiro, Luiz Carlos; Machado,Filho
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    Study on the association between tail lesion score, cold carcass weight and viscera condemnations in slaughter pigs
    (2016) Lemos Teixeira, Dayane; Harley, Sarah; Hanlon, Alison; O'Connell, Niamh Elizabeth; More, Simon John; García Manzanilla, Edgar; Boyle, Laura Ann
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    The Equipment Used in the SF6 Technique to Estimate Methane Emissions Has No Major Effect on Dairy Cow Behavior
    (2021) Cristina Pereira, Fabiellen; Lemos Teixeira, Dayane; Boyle, Laura Ann; Pinheiro Machado Filho, Luiz Carlos; Williams, Shaun Richard Owen; Enriquez-Hidalgo, Daniel
    The natural behavior of animals can be disrupted by the techniques and materials of research methodologies. This study aimed to evaluate the effect of the equipment used in the SF6 tracer technique to estimate enteric methane emissions on the behavior of lactating dairy cows. The cows (n = 24) were allocated to one of two diets: CONTROL and experimental diet (MIX). Behavior was assessed through video recordings between milking times during four phases: 3 days before fitting the cows with the SF6 equipment (PRE), first 2 days after the cows were fitted with the SF6 equipment (ADAP), 3 days during methane emission measurements (MEAS), and 2 days after the SF6 equipment removal (POST). The behaviors recorded included eating, ruminating or idling, resting, and others. Affiliative or agonistic and discomfort behaviors (scratching or pushing the equipment) were also recorded. Lying time was recorded over 14 days using dataloggers fitted to the cows' leg. Milk production and feed intake were recorded daily. MIX cows ruminated more than CONTROL cows (P = 0.05). The cows ruminated more at MEAS than in any other phase (P < 0.01). Time spent idling gradually decreased from PRE to MEAS for MIX cows (P < 0.01). The cows were lying down longer in MEAS than in ADAP and POST (P < 0.01). The time spent lying with the head down was shorter during PRE and ADAP than during POST (P < 0.05). No difference was observed in the occurrence of discomfort or agonistic behaviors (P > 0.05). Affiliative behaviors occurred more often in ADAP than in MEAS (P < 0.05). There was no difference between phases in daily lying time, number of lying bouts per day, or mean bout duration (P > 0.05). Milk production was not influenced by the SF6 equipment (P > 0.05). Dry matter intake was higher for CONTROL cows (P < 0.01), and it decreased from PRE to MEAS (P < 0.01). However, milk yield did not differ between cows wearing the SF6 equipment and those without it (P > 0.05). We conclude that the SF6 equipment had a minimal effect on dairy cow behavior.