Ellen Jongman

Observations on the effects of non-maternal adult contact on the behavioural patterns of pre-weaned dairy heifers

Laura Field, Lauren M Hemsworth, Ellen Jongman, Ian Hunt, Megan Verdon

Journal article  |  2023  |  Animal Production Science

Context. Dairy calves are often separated from their dams following birth, despite the beneficial effects of early life adult cont..

Development of Thresholds to Predict Grazing Behaviour of Dairy Cows from Motion Sensor Data and Application in a Pasture-Based Automatic Milking System

Brendan Cullen, Zelin Li, Saranika Talukder, Long Cheng, Ellen C Jongman

Journal article  |  2023  |  Dairy

The monitoring and measurement of animal behaviour may be valuable for improving animal production and welfare. This study was des..

Behavioural reactivity testing in sheep indicates the presence of multiple temperament traits.

Leigh Atkinson, Rebecca E Doyle, Andrew Woodward, Ellen C Jongman

Journal article  |  2022  |  Behav Processes

Temperament in sheep is commonly presented as unidimensional, with a 'nervous' temperament indicative of fear and reactivity towar..

Exposure to humans after weaning does not reduce the behavioural reactivity of extensively reared Merino lambs

Leigh Atkinson, Rebecca E Doyle, Andrew Woodward, Ellen C Jongman

Journal article  |  2022  |  BEHAVIOURAL PROCESSES

Human-directed fear in extensively reared sheep is often high due to the aversive nature of common husbandry procedures and infreq..

Prevalence of failure of passive immunity transfer in Australian non-replacement dairy calves

N Roadknight, E Jongman, P Mansell, N Courtman, D McGill, G Hepworth, A Fisher

Journal article  |  2022  |  AUSTRALIAN VETERINARY JOURNAL

Failure of passive immunity transfer (FPIT) increases the risk of morbidity and mortality in dairy calves. The prevalence of FPIT ..

Does the duration of repeated temporary separation affect welfare in dairy cow-calf contact systems?

Natalie Roadknight, William Wales, Ellen Jongman, Peter Mansell, Graham Hepworth, Andrew Fisher

Journal article  |  2022  |  APPLIED ANIMAL BEHAVIOUR SCIENCE

Dairy farm calf rearing systems with prolonged cow-calf contact may have benefits such as improved cow and calf health, and better..

Electrical versus CO2 stunning of pigs: effects on animal welfare and meat quality

Ellen Caroline Jongman

Book Chapter  |  2022

Blood parameters of young calves at abattoirs are related to distance transported and farm of origin (vol 104, pg 9164, 2021)

Natalie Roadknight, Peter Mansell, Ellen Jongman, Natalie Courtman, David McGill, Graham Hepworth, Andrew Fisher

Journal article  |  2021  |  JOURNAL OF DAIRY SCIENCE

An error is reported on page 9166; the corrected or added text is shown in bold: “Biochemistry analysis was carried out using a Co..

Can calf age be estimated using a combination of serum gamma-glutamyl transferase, total protein and immunoglobulin G?

Natalie Roadknight, William Wales, Ellen Jongman, Natalie Courtman, Peter Mansell, Andrew P Woodward, Andrew Fisher

Journal article  |  2021  |  RESEARCH IN VETERINARY SCIENCE

Our aim was to test a novel method for estimating the age of young calves, using serum γ-glutamyl transferase (GGT) activity, tota..

Blood parameters of young calves at abattoirs are related to distance transported and farm of origin

Natalie Roadknight, Peter Mansell, Ellen Jongman, Natalie Courtman, David McGill, Graham Hepworth, Andrew Fisher

Journal article  |  2021  |  JOURNAL OF DAIRY SCIENCE

Nonreplacement dairy calves, or bobby calves, are fasted and transported to abattoirs from as young as 5 d of age in Australia. Th..