Ian J. H. Duncan

Ian J. H. Duncan's AcademicInfluence.com Rankings

Ian J. H. Duncan

Biology

#11054

World Rank

#14429

Historical Rank

Botany

#362

World Rank

#1161

Historical Rank

biology Degrees

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Biology

Ian J. H. Duncan's Degrees

PhD Animal Science University of Guelph
Masters Animal Science University of Guelph
Bachelors Animal Science University of Guelph

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Ian J. H. Duncan's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

The notion of ethological ‘need’, models of motivation and animal welfare (1988) (470)
Can fish suffer?: perspectives on sentience, pain, fear and stress (2004) (390)
The influence of strain and environmental factors upon feather pecking and cannibalism in fowls. (1972) (358)
‘Pleasures’,'Pains’ and Animal Welfare: Toward a Natural History of Affect (1998) (297)
Animal welfare defined in terms of feelings (1996) (257)
Science-based assessment of animal welfare: farm animals. (2005) (237)
Thwarting of feeding behaviour in the domestic fowl. (1972) (233)
The changing concept of animal sentience (2006) (214)
The implications of cognitive processes for animal welfare. (1991) (206)
Guidelines for the ethical use of animals in applied ethology studies (2003) (177)
Frustration and aggression in the domestic fowl. (1971) (175)
The effects of weaning at 7, 14 and 28 days on piglet behaviour (1999) (172)
Observations on the reproductive behaviour of domestic fowl in the wild (1978) (161)
Animal Rights – Animal Welfare: A Scientist’s Assessment (1981) (151)
Cognitive aspects of social behaviour in the domestic fowl (1987) (138)
Free and operant feeding in domestic fowls. (1972) (136)
Behavior and behavioral needs. (1998) (131)
The interpretation of preference tests in animal behaviour (1978) (131)
The performance of nest building by domestic hens: is it more important than the construction of a nest? (1989) (130)
An analysis of displacement preening in the domestic fowl (1972) (125)
General Principles for the welfare of animals in production systems: the underlying science and its application. (2013) (121)
The pattern of food intake in female Brown Leghorn fowls as recorded in a Skinner box (1970) (120)
Behavioural consequences of partial beak amputation (beak trimming) in poultry. (1989) (119)
Impact of riding in a coercively obtained Rollkur posture on welfare and fear of performance horses (2009) (117)
Some investigations into motivation in the domestic fowl (1987) (114)
Nest site selection and nest-building behaviour in domestic fowl (1989) (105)
The Problem of Assessing “Well-Being” and “Suffering” in Farm Animals (1983) (104)
Poultry welfare: Science or subjectivity? (2002) (99)
Investigating fear in domestic rainbow trout, Oncorhynchus mykiss, using an avoidance learning task (2004) (98)
Measuring preferences and the strength of preferences. (1992) (98)
Feeding behaviour in a population of domestic fowls in the wild (1978) (95)
What's in a peck? Using fixed action pattern morphology to identify the motivational basis of abnormal feather-pecking behaviour (2008) (93)
Comparison of the stressfulness of harvesting broiler chickens by machine and by hand. (1986) (85)
Assessment of pain associated with degenerative hip disorders in adult male turkeys. (1991) (82)
The assessment of fear in domestic hens exposed to a looming human stimulus (1981) (79)
A scientific assessment of welfare (1974) (77)
Behaviour of young domestic fowl directed towards different substrates (1989) (75)
Social spacing in domestic fowl under seminatural conditions: the effect of behavioural activity and activity transitions (1991) (73)
Effects of resistance to milk flow and the provision of hay on nonnutritive sucking by dairy calves. (1998) (71)
Sexual behaviour and fertility in broiler breeder domestic fowl (1990) (67)
The pros and cons of cages (2001) (63)
Variations in levels of plasma thyroxine and triiodothyronine in juvenile female chickens during 24- and 16-hr lighting cycles. (1978) (62)
External factors and causation of dustbathing in domestic hens (1998) (62)
The Use of Radio Telemetry Devices to Measure Temperature and Heart Rate in Domestic Fowl (1980) (62)
The preferences of hens for compact fluorescent over incandescent lighting (1992) (61)
The impact of applied ethologists and the International Society for Applied Ethology in improving animal welfare (2004) (58)
Male broiler breeder fowl display high levels of aggression toward females. (2000) (57)
Social Stress and Welfare Problems in Agricultural Animals (1975) (57)
Inter-individual Distances and Orientation in Laying Hens Housed in Groups of Three in Two Different-Sized Enclosures (1989) (57)
The importance of rest in young domestic fowl (2007) (56)
Abnormal behaviours in farm animals : a report of the Commission of the European Communities (1983) (55)
A Concept of Welfare Based on Feelings (2008) (54)
The role of perception in the causation of dustbathing behaviour in domestic fowl (1995) (54)
Using time to insensibility and estimated time of death to evaluate a nonpenetrating captive bolt, cervical dislocation, and blunt trauma for on-farm killing of turkeys. (2010) (52)
Some behavioural observations on domestic fowl in the wild (1976) (52)
Behavioural needs do animals have behavioural needs (1981) (52)
VOLUNTARY REGULATION OF LIGHTING BY DOMESTIC FOWLS IN SKINNER BOXES (1982) (50)
Fear reactions in trained and untrained horses from dressage and show-jumping breeding lines (2010) (48)
Perching and floor laying by domestic hens: Experimental results and their commercial application (1988) (48)
Animal Welfare Issues in the Poultry Industry: Is There a Lesson to Be Learned? (2001) (46)
Frustrated nesting behaviour: Relation to extra-cuticular shell calcium and bone strength in White Leghorn hens (2003) (45)
Attempts to modify the responses of domestic fowl towards human beings. I. The association of human contact with a food reward (1977) (44)
The effects of four types of enrichment on feather-pecking behaviour in laying hens housed in barren environments (2010) (40)
Choice of social conditions by laying hens (1984) (39)
Attempts to modify the responses of domestic fowl towards human beings. II. The effect of early experience (1978) (36)
25 – ANIMAL BEHAVIOUR AND WELFARE (1981) (36)
The effect of a rauwolfia tranquilizer on stereotyped movements in frustrated domestic fowl (1974) (36)
Development of perching in hens (1989) (34)
Evidence of competition for nest sites by laying hens in large furnished cages (2014) (33)
Laying hens do not have a preference for high-frequency versus low-frequency compact fluorescent light sources (1996) (32)
Poultry welfare in North America: opportunities and challenges. (1998) (30)
Why do hens sham dustbathe when they have litter (2002) (30)
Effect of the provision of a low-nutritive feedstuff on the behavior of dairy heifers limit fed a high-concentrate ration. (2011) (29)
Effects of social “stressors” on belly-nosing behaviour in early-weaned piglets: is belly-nosing an indicator of stress? (2001) (29)
Strain differences in aggressiveness of male domestic fowl in response to a male model (2000) (28)
Effects of tail docking using a rubber ring with or without anesthetic on behavior and production of lactating cows. (2002) (28)
Feeding activity and egg formation in hens lit continuously (1975) (26)
How important is social facilitation for dustbathing in laying hens (2002) (26)
Behavioural needs: Can they be explained in terms of motivational models? (1988) (26)
[Abnormal behavior in farm animals]. (1985) (26)
Do domestic pigs prefer short-term to medium-term confinement? (1998) (26)
Cognition: The Implications for Animal Welfare (1989) (26)
Butting by calves,Bos taurus, and rate of milk flow (1998) (25)
Learning to gain access to a foraging and dustbathing substrate by domestic fowl: is ‘out of sight out of mind’? (1991) (25)
The influence of season and of providing a water trough on stream use by beef cattle grazing hill-country in New Zealand (2008) (24)
A Comparison of the Welfare of Hens in Battery Cages and Alternative Systems (2009) (23)
Previous experience with different floors influences choice of peat in a Y-maze by domestic fowl (1990) (22)
Development and validation of a behavioral acclimation protocol for cats to respiration chambers used for indirect calorimetry studies (2010) (22)
Reactions of poultry to human beings (1990) (21)
Investigating Fear in Rainbow Trout (Oncorhynchus mykiss) Using the Conditioned-Suppression Paradigm (2008) (21)
Behavioural wisdom lost (1977) (20)
Behavioural, health and cortisol responses of young calves to tail docking using a rubber ring or docking iron (2002) (20)
Heart rate and laying behavior in two strains of domestic chicken (1985) (20)
Who's afraid of the big bad glove? Testing for fear and its correlates in mink (2011) (20)
Welfare Problems of Poultry (2008) (18)
Report of the Working Group on Animal Distress in the Laboratory (2006) (18)
Do Differences in Conspecific Body Size Induce Social Stress in Domestic Rainbow Trout? (2006) (17)
Measuring aversion in domestic fowl using passive avoidance (1992) (17)
Proceeding (Paper presented at the Winter Meeting of the Society for Veterinary Ethology, London, Great Britain, 30 November 1988) (1989) (14)
Shuttle and one-way avoidance as measures of aversion in the domestic fowl (1991) (13)
D.G.M. Wood-Gush Memorial Lecture: An applied ethologist looks at the question "Why?" (1995) (12)
Changes in Substrate Access Did Not Affect Early Feather-Pecking Behavior in Two Strains of Laying Hen Chicks (2010) (12)
The welfare of farm animals: an ethological approach. (1987) (12)
The Ethogram of the Domesticated Hen (1980) (12)
Pain, fear and distress (2004) (11)
Rearing with males accelerates onset of sexual maturity in female domestic fowl. (1998) (11)
The Science of Animal Well-being (1993) (11)
Feeding motivation on the incidence of floor eggs and extraneously calcified eggs laid by broiler breeder hens (2011) (11)
Effects of high-fat and high-carbohydrate diets on fat and carbohydrate oxidation and plasma metabolites in healthy cats. (2014) (11)
Impact of Male-Male Competition and Morphological Traits on Mating Strategies and Reproductive Success in Broiler Breeders (2013) (11)
Impact of Male-Male Competition and Morphological Traits on Mating Strategies and Reproductive Success in Broiler Breeders (2013) (11)
The Welfare of Domestic Fowl and Other Captive Birds (2010) (11)
Randomized controlled trial assessing the effects of xylazine sedation in 2- to 6-week-old dairy calves disbudded with a cautery iron. (2021) (10)
Do domestic fowl form groups when resources are unlimited (1995) (9)
Failure of domestic fowl to show contrast in learning: the implications for welfare (1990) (9)
Some studies on heart-rate and behaviour in the domestic fowl (1979) (9)
The effect of dentition on feeding development in piglets and on their growth and behavior after weaning. (2010) (8)
Research and Development in Relation to Farm Animal Welfare (1981) (7)
Mating behaviour and fertility. (2009) (7)
Does hunger hurt? (2000) (7)
Radiotelemetry of avian electrocardiogram (1980) (6)
A study of the domestic fowl under conditions of drive interaction and goal inaccessibility (1970) (6)
A new nonlinear model of mechanisms of motivation (1995) (6)
Dietary fat and carbohydrate have different effects on body weight, energy expenditure, glucose homeostasis and behaviour in adult cats fed to energy requirement (2015) (6)
Some Factors Influencing Spacing in Domestic Fowl in a Semi-Natural Environment (1985) (5)
Global Animal Partnership's 5-Step TM Animal Welfare Rating Standards: a welfare-labelling scheme that allows for continuous improvement (2012) (5)
Is sentience only a nonessential component of animal welfare (2016) (5)
Social cognition of farm animals. (2001) (5)
Nests and nesting in the domestic fowl: Which is the reward? (1987) (4)
Changes in physical and chemical characteristics of turkey eggs throughout a laying cycle (2015) (4)
Gordon memorial lecture. Poultry welfare: science or subjectivity? (2002) (3)
Animal Welfare: A Brief History (2019) (3)
Some thoughts on the stressfulness of harvesting broilers (1986) (3)
A push-door for measuring motivation (1990) (3)
ho ’ s afraid of the big bad glove ? Testing for fear and its correlates in ink (2011) (2)
The international society for applied ethology: Going strong 50 years on (2016) (2)
Discrimination by hens in favour of litter rather than wire floors (1988) (2)
Farm animal welfare: facts and fallacies, Animal behaviour as a guide to welfare, They know not what they do. (1980) (2)
Distress or Suffering: What Should be Measured to Determine Animal Well-Being? (2009) (2)
The domestic fowl. (2010) (2)
Comparative Study of Body Characteristics of Different Strains of Broiler Chickens (1998) (2)
Hybrid Microcircuits for Implantable Radio Transmitters (1980) (2)
Spacing in domestic fowl: the effects of rank and available space (1986) (1)
Animal Welfare Lessons from Work on Poultry (1981) (1)
Farm animal welfare in Canada: major problems and prospects. (2012) (1)
Radiotelemetry of avian shank temperature using a thin-film hybrid microcircuit (1975) (1)
Investigations into the stressfulness of harvesting broilers (1988) (1)
Effects of a high vs. low carbohydrate diet on fat and carbohydrate oxidation in cats (2010) (1)
The development of fear responses and stereotypies in fowls (1978) (1)
Appendix Radio-Telemetry Techniques (1981) (0)
Program: Impact of Riding in Rollkur-posture on Welfare of Performance Horses (2008) (0)
Understanding states of suffering with implications for improved management of poultry (2020) (0)
Some aspects of the behaviour of a population of feral fowl (1979) (0)
The philosophical and biological evolution of feelings in well-being. (2020) (0)
Using movement to determine motivation: a comparison of the motor patterns involved in feather pecking, dustbathing and foraging. (2009) (0)
Voluntary intake and feeding preferences of dairy cattle for Chicory ( Chichorium intibus ) and Birdsfoot trefoil ( Lotus corniculatus ) as related to harvest time (2013) (0)
Practical applications: welfare problems of poultry (2004) (0)
Theoretical framework: a concept of welfare based on feelings (2004) (0)
Pre-laying behaviour of domestic hens in relation to littered nest sites, pre-formed nests and nests with eggs (1988) (0)

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What Schools Are Affiliated With Ian J. H. Duncan?

Ian J. H. Duncan is affiliated with the following schools:

University of Guelph