Cattle

Nutrient intake, feeding patterns, and abnormal behavior of growing bulls fed different concentrate levels and a single fiber source (corn stover silage)

Twenty-eight bulls weighing 227 ± 6.8 (SD) kg were randomly assigned to four concentrate levels (1-1.5 kg [low level of concentrate {LC}], 1.5-2 kg [medium level of concentrate], 2-2.5 kg [high level of concentrate {HC}], and 2.5-3 kg [highest level...

Year Published: 2019Topics: Abnormal/Problematic Behavior, Animal Training, Environmental Enrichment, Housing, Husbandry & ManagementAnimal Type: Cattle

Citation: ur Rahman, M. A., Xia, C., Ji, L. et al. 2019. Nutrient intake, feeding patterns, and abnormal behavior of growing bulls fed different concentrate levels and a single fiber source (corn stover silage). Journal of Veterinary Behavior 33, 46-53.

Agricultural animals as biomedical models: Occupational health and safety considerations

The use of agricultural animals in biomedical research is increasing. Their overall size and metabolic rate, organ size, longer gestation period, and other physiological similarities make them good candidates for animal models of human disease. There are a number of...

Year Published: 2018Topics: Handling, HousingAnimal Type: Cattle, Chicken, Equine, Fowl, Goat, Pig, Sheep

Citation: Edwards, G. L., Michael, J. A., Parks., A. 2018. Agricultural animals as biomedical models: Occupational health and safety considerations. ILAR Journal 59(2), 161-167.

Assessing the affective component of pain, and the efficacy of pain control, using conditioned place aversion in calves

Pain in animals is typically assessed using reflexive and physiological responses. These measures allow inferences regarding nociception but provide little basis for conclusions about the affective component of pain (i.e. how negatively the experience is perceived). Calves routinely undergo painful...

Year Published: 2019Topics: Analgesia, Body Modification/MutilationAnimal Type: Cattle

Citation: Ede, T., von Keyserlingk, M. A. G., Weary, D. M. 2019. Assessing the affective component of pain, and the efficacy of pain control, using conditioned place aversion in calves. Biology Letters 15(10), 20190642.

Does pellet size affect the ability of beef heifers to consume a pelleted supplement in a simulated grazing model?

The objective was to evaluate pellet consumption and refusals as affected by pellet size. Six ruminally cannulated heifers were used in a replicated 3 × 3 Latin square. Heifers were individually housed and fed a diet of grass hay (57.5%),...

Year Published: 2019Topics: Husbandry & ManagementAnimal Type: Cattle

Citation: Kelln, L., Newkirk, R. W., Smillie, J. et al. 2019. Does pellet size affect the ability of beef heifers to consume a pelleted supplement in a simulated grazing model? Canadian Journal of Animal Science 99(4), 943-950.

Positive and negative emotions in dairy cows: Can ear postures be used as a measure?

Applying objective measures to assess the emotional states of animals is an important area of research and essential for improving animal welfare. In this study, we have built upon previous research to test whether ear postures can be used as...

Year Published: 2019Topics: Emotion, Pain, & Sentience, Welfare AssessmentAnimal Type: Cattle

Citation: Lambert, H., Carder, G. 2019. Positive and negative emotions in dairy cows: Can ear postures be used as a measure? Behavioural Processes 158, 172-180.

Artificial grass as an alternative laneway surface for dairy cows walking to pasture

Softer surfaces can alleviate pressure on the claw during claw–surface contact, which is especially important for cows with painful claws. The benefits of softer barn floors are well known, but as cows often walk long distances twice daily between pasture...

Year Published: 2019Topics: HousingAnimal Type: Cattle

Citation: Buijs, S., Scoley, G., McConnell, D. 2019. Artificial grass as an alternative laneway surface for dairy cows walking to pasture. Animals 9(11), 891.

Pasture access affects behavioral indicators of wellbeing in dairy cows

Dairy cows are increasingly housed indoors, either year-round or for long stretches over the winter and around parturition. This may create health and welfare issues. In cattle, lying and walking are highly motivated, and herds synchronize lying behavior when they...

Year Published: 2019Topics: HousingAnimal Type: Cattle

Citation: Crump, A., Jenkins, K., Bethell, E. J. et al. 2019. Pasture access affects behavioral indicators of wellbeing in dairy cows. Animals 9(11), 902.

Infrared thermography—A non-invasive method of measuring respiration rate in calves

Respiration rate (RR) is commonly used to assess states of cattle health and welfare such as pain, stress and disease. Traditionally, RR is measured by counting flank movements, a method often considered to be labour-intensive and impractical. This study investigated...

Year Published: 2019Topics: Biological Sampling & Physiological MeasurementAnimal Type: Cattle

Citation: Lowe, G., Sutherland, M., Waas, J. et al. 2019. Infrared thermography—A non-invasive method of measuring respiration rate in calves. Animals 9(8), 535.

How can we assess positive welfare in ruminants?

Until now, most research has focused on the development of indicators of negative welfare, and relatively few studies provide information on valid, reliable, and feasible indicators addressing positive aspects of animal welfare. However, a lack of suffering does not guarantee...

Year Published: 2019Topics: Welfare AssessmentAnimal Type: Cattle, Chicken, Equine, Fowl, Goat, Pig, Sheep

Citation: Mattiello, S., Battini, M., De Rosa, G. et al. 2019. How can we assess positive welfare in ruminants? Animals 9(10), 758.

Characterization of the normal portal and hepatic blood flow of adult Holstein-Friesian cows

Knowledge of physiological portal and hepatic blood flow in cattle is essential for the use of Doppler ultrasound for diagnostic purposes. In this paper, we describe a protocol for the systematic ultrasonography evaluation of the portal and hepatic system in...

Year Published: 2019Topics: Biological Sampling & Physiological MeasurementAnimal Type: Cattle

Citation: Barreiro-Vázquez, J. D., Miranda, M., Barreiro-Vilanova, M. I. et al. 2019. Characterization of the normal portal and hepatic blood flow of adult Holstein-Friesian cows. Animals 9(6), 386.