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  1. Out of sight or in too deep: Effect of visual barriers and water depth on agonistic behaviour and growth in hatchling saltwater crocodiles (Crocodylus porosus)

    Contributor(s):: Brien, Matthew L., Gienger, Christopher M., Webb, Grahame J., McGuinness, Keith, Christian, Keith A.

    This study tests the role of visual barriers and water depth on levels of agonistic behaviour and growth in hatchling Crocodylus porosus within the first 3 weeks of life. Ninety-six individuals from four separate clutches hatched over 2 days were divided across three treatments containing two...

  2. Measures of behavioural reactivity and their relationships with production traits in sheep: A review

    Contributor(s):: Dodd, Cathy L., Pitchford, Wayne S., Hocking Edwards, Janelle E., Hazel, Susan J.

    This paper defines the concept of temperament and discusses the use of behavioural reactivity testing in sheep. The range of behavioural tests used in sheep are categorised and the aspects of behaviour reflected by each type of test discussed. The activation of nervous and endocrine pathways is...

  3. Effect of enrichment on the behaviour and growth of juvenile Xenopus laevis

    Contributor(s):: Archard, Gabrielle A.

    Xenopus laevis is the most widely used model amphibian species in laboratories, yet there is almost no experimental evidence to guide best practice for captive housing. Enrichment is an important component of maintenance and welfare. A split-sibship experimental design was used to rear juvenile...

  4. Dominance and growth of Diplodus sargus (Pisces: Sparidae) in small captive groups

    Contributor(s):: Gonçalves, Ana Ribeiro, de Sousa, Liliana Carvalho, Almada, Vitor Carvalho

    The dominance hierarchies and the growth rate of the commercially important fish Diplodus sargus were assessed in this study. Specifically, we tested the hypothesis that, if stable dominance orders were established, dominant fish would grow faster and show better condition factors than losers at...

  5. Does environmental enrichment really matter? A case study using the eastern fence lizard, Sceloporus undulatus

    Contributor(s):: Rosier, Renee L., Langkilde, Tracy

    Institutional and federal ethics committees regulate research on live vertebrate animals. Current regulations require researchers to provide environmental enrichment for laboratory animals. The intention is that such enrichment reduces stress and prevents atypical behavior of captive animals,...

  6. Disentangling the effects of weaning stressors on piglets’ behaviour and feed intake: Changing the housing and social environment

    Contributor(s):: Hötzel, Maria J., de Souza, Gisele P. P., Costa, Osmar A. Dalla, Machado Filho, Luiz Carlos P.

    Under farming conditions piglets generally face several simultaneous stressors including separation from the dam, an abrupt change from milk to a solid diet and changes in the social and housing environments. In this study we tested the hypothesis that increasing the number of environmental...

  7. Does environmental enrichment really matter? A case study using the eastern fence lizard, Sceloporus undulatus

    Contributor(s):: Rosier, Renee L., Langkilde, Tracy

    Institutional and federal ethics committees regulate research on live vertebrate animals. Current regulations require researchers to provide environmental enrichment for laboratory animals. The intention is that such enrichment reduces stress and prevents atypical behavior of captive animals,...

  8. Effects of familiarity on individual growth and feeding behaviour of European seabass Dicentrarchus labrax

    Contributor(s):: Batzina, Alkisti, Drossos, Ioannis-Panagiotis, Karakatsouli, Nafsika

    Available literature indicates that fish are able to recognize familiar conspecifics and that familiarity may offer important benefits (e.g. more stable social environment, improved foraging behavior, growth, survival). In the practice of intensive rearing of European seabass Dicentrarchus labrax...

  9. Maternal nest building and choice of nest site are temperature dependent in mink: Parent-offspring temperature conflict?

    Contributor(s):: Schou, Toke Munk, Malmkvist, Jens

    We investigated whether nest building and nest site preference are temperature dependent in female mink. We designed two experiments: in Experiment 1, female mink had access to unheated (7 °C, Room7C group) or heated (25 °C, Heated25C group) nest boxes; in Experiment 2, female mink had free...

  10. Gangs of piglets: Welfare and growth of imprinted and guided weaners

    Contributor(s):: Mesarec, Nikolina, Povše, Maja Prevolnik, Škorjanc, Dejan, Skok, Janko

    Weaning stress accompanied by outburst of aggression is a critical point in pig production as it compromises piglets’ welfare and leads to poor growth rate and health problems. Therefore, a weaning methods to smoothen the lactation–weaning transition are of great importance. In the present study...

  11. Effects of group size on behaviour, growth and occurrence of bite marks in farmed mink

    Contributor(s):: Axelsson, Heléne M. K., Hansen, Steffen W., Loberg, Jenny, Lidfors, Lena

    The aims of this study were to investigate the occurrence of stereotypic behaviours and the activity level in farmed mink when group housed in climbing cages and if group housing increase aggression by assessing the prevalence of bite marks. This was studied in juvenile mink of the colour types...

  12. Effects of size distribution on social interactions and growth of juvenile black rockfish (Sebastes schlegelii)

    Contributor(s):: Guo, Haoyu, Zhang, Xiumei, Johnsson, Jörgen I.

    Growth heterogeneity in rearing groups may complicate feeding operations and inducing cannibalism in cultured fish. To reduce these problems size grading has become a common rearing practice. To better understand the relationship between size grading and growth variation in cultured juvenile...

  13. The effect of trough space and floor space on feeding and welfare of lambs in an intensive finishing system

    Contributor(s):: Jongman, Ellen C., Rice, Maxine, Campbell, Angus J. D., Butler, Kym L., Hemsworth, Paul H.

    This study examined the effects of floor space and feeder space on the feeding behaviour, growth and stress physiology of lambs, at different times, over a 6-week period in a finishing feedlot. A total of 640 lambs in four time replicates (160 lambs per replicate) were studied in four 40-lamb...

  14. Effect of housing density on growth, agonistic behaviour, and activity in hatchling saltwater crocodiles (Crocodylus porosus)

    Contributor(s):: Brien, Matthew L., Webb, Grahame J., McGuinness, Keith A., Christian, Keith A.

    The purpose of this study was to examine the effect of density on growth rate, agonistic behaviour, activity and use of space by hatchling C. porosus in captivity. Hatchling C. porosus were raised in identical enclosures (1.5m2) at different densities (3.3, 6.7, 13.3 and 20.0hatchlings/m2; or...

  15. Relationships between temperament, feeding behaviour, social interactions, and stress in lambs adapting to a feedlot environment

    Contributor(s):: Rice, Maxine, Jongman, Ellen Caroline, Butler, Kym Lloyd, Hemsworth, Paul Hamilton

    The production of lamb meat is a large and important industry in Australia. Variability and seasonality of the climate and the demand for a consistent product (in terms of weight and age) have led to an increase in the use of feedlot systems for finishing lambs. While most lambs acclimatise to...

  16. Characterisation of Shy-feeding and Feeding lambs in the first week in a feedlot

    Contributor(s):: Rice, Maxine, Jongman, Ellen Caroline, Borg, Samantha, Butler, Kym Lloyd, Hemsworth, Paul Hamilton

    Up to 20% of lambs introduced to feedlots are prone to ‘Shy-feeding’ or inappetence. Factors considered to contribute to the condition of Shy-feeding include: neophobia (environment and concentrated feeds), disease and competition around feeding. However, little is known about the...

  17. Relationship between quantitative measures of temperament and other observed behaviors in growing cattle

    Contributor(s):: Bruno, Kelsey, Vanzant, Eric, Vanzant, Kirk, Altman, Alexander, Kudupoje, Manoj, McLeod, Kyle

    Measures of temperament have been previously related to gain and intake in beef cattle. Intake effects may be partially mediated through social interactions in that some temperament measures may directly relate to social dominance behavior. To examine the relationships between temperament,...

  18. Playful pigs: Evidence of consistency and change in play depending on litter and developmental stage

    Contributor(s):: Brown, S. M., Peters, R., Nevison, I. M., Lawrence, A. B.

    Play behaviour in pre-weaned piglets has previously been shown to vary consistently between litters. This study aimed to determine if these pre-weaning litter differences in play behaviour were also consistent in the post weaning period. Seven litters of commercially bred piglets were raised in a...

  19. Posttraumatic Growth Following the Loss of a Pet: A Cross-Cultural Comparison

    Contributor(s):: Cori Bussolari, Janice Habarth, Satoko Kimpara, Rachel Katz, France Carlos, Amy Chow, Hisao Osada, Yukiko Osada, Betty J. Carmack, Nigel P. Field, Wendy Packman

  20. Análisis de oportunidades de mercado para la creación de un Centro Integral para Mascotas (CIM) en la ciudad de Bogotá

    Contributor(s):: Cindy Vanesa Ríos Rodríguez

    En este trabajo se realiza el Análisis de Oportunidades de Mercado (AOM) para la creación de un Centro Integral para Mascotas (CIM) en la ciudad de Bogotá, con el fin de determinar, si existen estas oportunidades en el sector y generar una propuesta de estrategias de mercado....