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Browsing by Author "Teixeira, Dayane Lemos"

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Assessment of Animal-Based Pig Welfare Outcomes on Farm and at the Abattoir: A Case Study
(2020) Teixeira, Dayane Lemos; Salazar, Laura C.; Enriquez-Hidalgo, Daniel; Boyle, Laura A.
The study assessed the prevalence of animal-based pig welfare outcomes on one Chilean farm and one abattoir. A total of 198 pens of slaughter pigs (9,049 pigs) were observed on farm and 54 batches (8,843 pigs) were observed at the abattoir. All assessments were conducted from outside the pen on farm and from outside the corridor where pigs were unloaded from the truck at the abattoir. Batch size and number of pigs with ear, tail and skin lesions, hernias, rectal prolapse, bursitis, and lameness were recorded. Data were analyzed using generalized linear mixed models. There was a large variation among pens on farm and among batches at the abattoir for all outcomes. Bursitis was the most prevalent outcome recorded in both locations, followed by ear lesions recorded on farm and by tail lesions recorded at the abattoir. Ear lesions' prevalence was higher on farm (P< 0.001), while tail lesions, hernia, and bursitis prevalence were higher at the abattoir (P< 0.001). Ear lesions' prevalence on farm was higher in female and mixed-sex groups than in male groups (P < 0.01), but male groups tended to have a higher tail lesions' prevalence (P< 0.1). The results show a difference in welfare outcomes, suggesting that assessment of outcomes on farm could complement ante-mortem inspections at the abattoir. However, as the same animals were not inspected in the two locations and there is the possibility of a seasonal influence on the results, the findings should be interpreted with caution and further research is required.
Behavioural responses of pasture based dairy cows to short term management in tie-stalls
(2018) Enriquez-Hidalgo, Daniel; Teixeira, Dayane Lemos; Lewis, Eva; Buckley, Frank; Boyle, Laura; O'Driscoll, Keelin
Chilean public attitudes towards beef production systems
(2023) de la Fuente, Valentina Mansky; Enriquez-Hidalgo, Daniel; Teixeira, Dayane Lemos; Larrain, Rafael; Hotzel, Maria Jose
Much is discussed about the characteristics, efficiency, and externalities of indoor housing and pasture-based beef production systems, but little is known about how these features influence public attitudes towards beef production. This study aimed to explore Chilean citizens' attitudes towards beef production systems and their underlying reasons. Citizens (n = 1,084) were recruited to participate in a survey and given information about one beef production system: indoor housing, continuous grazing or regenerative grazing. Participants had more favourable attitudes (from 1 = most negative attitudes to 5 = most positive attitudes) towards pasture-based systems (regenerative grazing = 2.94; continuous grazing = 2.83) than towards indoor housing (1.94), mainly due to concerns with animal welfare and environmental impacts. Productivity was not as important as the other sustainability aspects for participants as they were not willing to do that trade-off. Support for beef production may benefit if production systems adopt characteristics that are perceived by the public as positive for the environment and animal welfare.
Citizen attitudes towards present and future beef consumption before and after the COVID-19 pandemic
(2024) Fuente, Valentina Mansky de la; Hotzel, Maria Jose; Teixeira, Dayane Lemos; Larrain, Rafael Esteban; Enriquez-Hidalgo, Daniel
There's been a change in citizens' attitudes towards beef consumption in high-income countries, resulting in a decline in its consumption. The COVID-19 pandemic may have impacted citizens' attitudes and behaviours towards beef consumption. This study aimed to investigate Chilean citizens' attitudes towards beef consumption during the initial 18 months of the pandemic. Socio-demographic characteristics and attitudes towards beef consumption were asked in two questionnaires done in 2020 (n = 1142) and 2021 (n = 1221). Citizens' attitudes to beef eating and production did not change between the start and more than a year after the outbreak of the COVID-19 pandemic. Participants not related with animal production, female, young, and non-meat consumers demonstrated more negative attitudes towards beef consumption and production. Half of the participants agreed that beef is bad for the environment, but only 30% agreed that beef is bad for human health. Half of participants had reduced beef consumption and 48% expressed intentions to reduce beef consumption in the future, primarily motivated by concerns related to animal welfare, the environment, and human health. The majority of participants (80%) thought that their fellow citizens should reduce their beef consumption but only 50% had confidence that this will occur. We conclude that Chilean consumers' attitudes to beef eating did not change due to the outbreak of the COVID-19 pandemic. Participants expressed strong concern about beef consumption both individually and socially, due to environmental, animal and health concerns, and believed Chileans should reduce beef consumption in the future but had low confidence that this will happen.
Designing Better Water Troughs : Does Trough Color Influence Dairy Cows' Preference?
(2017) Teixeira, Dayane Lemos; Hotzel, M.; Machado, L.; Cazale, J.; Enriquez Hidalgo, Daniel
Effects of instantaneous stocking rate, paddock shape and fence with electric shock on dairy cows' behaviour
(2017) Teixeira, Dayane Lemos; Pinheiro, L.; Hotzel, M.; Enriquez Hidalgo, Daniel
Farm Animal Welfare Influences on Markets and Consumer Attitudes in Latin America: The Cases of Mexico, Chile and Brazil
(2017) Vargas, E.; Miranda, G.; Teixeira, Dayane Lemos; Enriquez Hidalgo, Daniel; Tadich, T.; Lensink, J.
Incorporating a Fresh Mixed Annual Ryegrass and Berseem Clover Forage Into the Winter Diet of Dairy Cows Resulted in Reduced Milk Yield, but Reduced Nitrogen Excretion and Reduced Methane Yield
(2020) Enriquez-Hidalgo, Daniel; Teixeira, Dayane Lemos; Pinheiro Machado Filho, Luiz Carlos; Hennessy, Deirdre; Toro-Mujica, Paula; Williams, Shaun Richard Owen; Pereira, Fabiellen Cristina
The winter diet of dairy cows in Mediterranean climate regions is usually a total mixed ration with a base of conserved summer crops such as corn silage and alfalfa hay. However, there is increased labor and financial cost related to this kind of feeding, which could be reduced if fresh forages were used in place of some of the conserved forage in the cow diet. The objective of our study was to evaluate the effect of including fresh mixed annual ryegrass and berseem clover into the diet of dairy cows on milk, nitrogen utilization, and methane emission. Twenty-four lactating dairy cows were split into two groups and offered either a diet similar to that usually offered to the cows (CON) or one where a mixture of fresh annual ryegrass and berseem clover was used to partially substitute the corn silage and alfalfa hay in the diet (MIX). Milk yield was recorded automatically, and methane emissions were estimated using the SF6 tracer technique. The MIX diet had lower crude protein concentration (148 vs. 170 g/kg DM) but higher DM digestibility (81.6 vs. 78.6%) than the CON diet. Compared to the cows offered the CON diet, milk yield was reduced when cows were fed the MIX diet (36.4 vs. 31.9 kg/d), but methane emissions (381 vs. 332 g/d) and nitrogen excretion were also reduced (238 vs. 180 g/d). Nitrogen use efficiency was unaffected (30.8%). In addition, milk from cows fed the MIX diet had a fatty acid profile considered to be more beneficial to human health than that of the milk from cows fed the CON diet. Increasing the protein concentration in the MIX diet, either by direct supplementation or increasing the proportion of legume in the mixed herbage, could overcome the reduction on milk and positively affect methane emission and N use efficiency.
Interplay between productive traits, the social rank and the cow's stability in the order of entrance to the milking parlour
(2020) Vargas Bello, Einar; Bastiás Ruz, J.; Toro Mujica, Paula; Teixeira, Dayane Lemos; Enríquez, Daniel
Phenological stages of Mediterranean forage legumes, based on the BBCH scale
(2020) Enríquez, Daniel; Cruz, T.; Teixeira, Dayane Lemos; Steinfort Needham, Ursula Carla
Pigs' capacity to experience feelings and to suffer from tail lesion, ear lesion and lameness: Exploring citizens and pig farm and abattoir workers' knowledge and perceptions
(2023) Teixeira, Dayane Lemos; Salazar, Laura C.; Enriquez-Hidalgo, Daniel; Hotzel, Maria Jose
The aim of this study was to gain insight into the perceptions of pig farm and abattoir workers as well as lay citizens regarding (1) sentience and (2) positive (intelligent and friendly) and negative (gluttonous, stubborn and dirty) attributes of pigs. We also aimed to investigate the (3) knowledge and perceptions of pig farm and abattoir workers on tail lesion, ear lesion and lameness in pigs and (4) the opinion of lay citizens regarding the likelihood of tail lesions, ear lesions, and lameness causing suffering in pigs and affecting meat quality. Chilean pig farm workers (n = 116), pig abattoir workers (n = 95), and lay citizens (n = 708) were invited on farm, at the abattoir and in public places, respectively, to participate in a survey. Answers were indicated using a 5-point Likert scale (0 = totally disagree; 4 = totally agree). Data were analysed using generalized linear models, including recruitment place and socio-demographic data as predictor variables. Female and lay citizens attributed pigs a higher capacity to experience feelings than male participants and pig farm and abattoir workers (p < 0.05). Lay citizens and workers recruited on farm described pigs as being more intelligent and friendly than those workers recruited at the abattoir (p < 0.001); recruitment place and sex were not associated with participants' perception regarding negative attributes of pigs (p > 0.05). Most lay citizens considered that tail lesions, ear lesions and lameness are likely to cause suffering in pigs and older participants had higher odds of agreeing that tail and ear lesions are likely to affect meat quality (p < 0.05). Finally, the risk factors for tail lesion, ear lesions and lameness pointed out by pig farm and abattoir workers is in line with what has been suggested by experts. Our findings contribute to understand the perception and values of all stakeholders regarding animal welfare, as it is crucial to improve the sustainability of animal production systems.
Public attitudes towards beef production systems and beef consumption behaviour
(2021) Mansky de la Fuente, Valentina; Enríquez, Daniel; Hötzel, Maria José; Larraín Prieto, Rafael; Teixeira, Dayane Lemos; Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
Mucho se discute sobre las diferentes características, eficiencia y externalidades de los diferentes sistemas de producción de carne de vacuno, pero se sabe poco sobre cómo estas características influyen en las actitudes de los ciudadanos hacia la industria de producción de carne. Estas actitudes pueden influir en las decisiones sobre los hábitos de consumo de carne de vacuno y aumentar el número de personas que deciden reducirla o dejar de comerla. En primer lugar, este estudio tuvo como objetivo explorar las actitudes de los ciudadanos hacia los sistemas de producción y consumo de carne vacuna y la influencia de la información en los sistemas e investigar el consumo actual de carne de vacuno, su proyección y las razones subyacentes. Para esta investigación, los ciudadanos chilenos fueron reclutados en persona o en línea. Se pidió a los participantes que respondieran un cuestionario que incluía información sobre uno de los sistemas productivos (confinamiento, pastoreo extensivo, pastoreo regenerativo) o ninguna información, y cada uno fue aleatorizado a uno de estos cuestionarios. Los participantes (n = 1509) tuvieron actitudes más favorables hacia los sistemas basados en pasto que hacia el confinamiento, principalmente debido a preocupaciones sobre el bienestar animal y los impactos ambientales. El suministro de información no tuvo ningún efecto en las respuestas de los participantes respecto a los sistemas de producción de carne vacuna, ni en su consumo actual o futuro de carne. La mitad de los participantes dijeron que habían reducido el consumo de carne en el último año por razones ambientales o de bienestar animal y el 42% esperaba reducir el consumo en el futuro. Además, el 80% esperaba que los chilenos redujeran el consumo de carne de res en el futuro, pero la mayoría no confiaba en que esto suceda. Los participantes creen que es necesario reducir el consumo de carne de vacuno, tanto para ellos mismos como para la sociedad en su conjunto. Tanto el apoyo a la producción como el consumo de carne pueden beneficiarse si los sistemas de producción adoptan características que el público percibe como positivas para el medio ambiente y el bienestar animal.
Skin Temperature of Slaughter Pigs With Tail Lesions
(2020) Teixeira, Dayane Lemos; Boyle, Laura Ann; Enriquez-Hidalgo, Daniel
The aim of this study was to assess the effect of tail lesion severity on skin temperature of slaughter pigs measured at the base of the tail and the ear by infrared thermography camera and to evaluate the association between the temperature measurements. Pigs were randomly selected in the lairage, containing similar to 200 pigs/pen. Tail lesions were scored according to severity, using a 0-4 scale. Tail lesion scores 0 and 1 were summed as it was difficult to distinguish healed lesions from mild lesions due to animal dirtiness. In total, 269 study pigs were imaged at the two locations. The effect of tail lesion score and sex of the pig on the highest temperature of the infrared image areas were analyzed using linear mixed models. Association between the tail base and ear base temperatures was evaluated using Pearson correlation. Skin temperature measured at the base of the tail was significantly lower for tails scored 0-1 than for all other tail lesion scores (P < 0.05). Pigs with tail lesion scored 2 had significantly lower skin temperatures at the base of the tail than pigs with tail lesion scored 3 or 4 (P < 0.05) while there was no difference in skin temperature at the base of the tail between pigs with tail lesion scored 3 and 4 (P > 0.05). Skin temperature measured at the ear base was significantly lower for pigs with tail lesion scored 0-1 than pigs of all other tail lesion scores (P < 0.05) with no difference between the other scores (P > 0.05). Furthermore, there was an association between the two measurements (r = 0.50; P < 0.001). The findings suggest that even pigs with moderate tail lesions (score 2) may have general inflammation and infection, evidenced by the elevated systemic temperature compared to pigs with none or mild tail lesion (score 0-1).
The capacity of ante-mortem inspection of pigs at the abattoir to predict post-mortem findings and associated financial implications: A study at batch level
(2023) Teixeira, Dayane Lemos; Salazar, Laura C.; Boyle, Laura A.
This study aimed to investigate the associations between severe ear, tail, and skin lesions, hernias, bursitis, and rectal prolapses and meat inspection finding in slaughter pigs, including carcass weight and financial implications associated with carcass condemnations at batch level. Data were collected from 13,296 pigs from 116 batches from a single abattoir. Spearman's correlation coefficients were calculated to analyze the degree of association between the prevalence of welfare issues and condemnation findings. The association between batch-level results of carcass weight, batch size, and the prevalence of welfare issues was analyzed using generalized linear mixed models. The prevalence of tail lesions was significantly associated with both entire (r = 0.224; p = 0.0432) and partial (r = 0.276; p = 0.0120) carcass condemnation. Batches with pigs affected by more than one welfare issue were 9.9 kg lighter than those without welfare issues (p < 0.05), which was equivalent to a potential loss of euro11.28 per pig. Our findings indicate that ante-mortem inspection could be useful to predict post-mortem findings at batch level and that welfare issues in pigs represent a financial loss to producers, as they are paid on a per kg basis and have tight margins.
The capacity of inspection on farm and at the abattoir to predict post-mortem outcomes in slaughter pigs: a study at animal level
(2023) Teixeira, Dayane Lemos; Salazar, Laura; Larraín Prieto, Rafael; Boyle, Laura A.
The aim of this study was to investigate associations between ear, tail, and skinlesions, hernias, bursitis, and rectal prolapses at the abattoir and meat inspection out-comes in slaughter pigs, including carcass condemnations and trimmings, carcassweight, and carcass quality. This was an observational study whereby pigs were man-aged according to routine practices in a single abattoir. Data were collected from1816 pigs. The relationship between animal-based welfare and post-mortem out-comes was analyzed using generalized mixed models (Proc Glimmix). Our findingsshowed that tail lesions were associated with entire carcass condemnations and trim-mings (P< 0.001), a reduction in carcass weight (P< 0.05), and a potential to impaircarcass quality by reducing muscle pH (P< 0.05), especially in carcasses from malepigs (P< 0.05). Additionally, hernias were associated with viscera condemnation(P< 0.05) and a reduction in carcass weight (P< 0.05). Therefore, our findings con-firm that ante-mortem inspection could be useful to predict post-mortem outcomesin the same pigs, especially in cases of tail lesions and hernia, which might triggerattention of the veterinary inspector in charge of the post-mortem inspection.

Browsing by Author "Teixeira, Dayane Lemos"

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