Research Leader
layd@purdue.edu
Phone: (765) 496-7750
Fax: (765) 496-1993
Room 218
LIVESTOCK BEHAVIOR RESEARCH
125 SOUTH RUSSELL STREET
WEST LAFAYETTE, IN, 47907-2042

Project List

	QUANTIFICATION OF ANIMAL WELL BEING
	HANDLING AND TRANSPORT STRESS INTERACTIONS WITH PATHOGEN BIOLOGY IN LIVESTOCK
	ETHOLOGY OF FOOD PRODUCING ANIMALS
	EFFECTS OF LEVALBUTEROL AND RACEMIC ALBUTEROL ON SWINE
	THE IMPACT OF ROUTINE PIGLET PROCESSING ON WELL-BEING
	DEVELOPMENT OF A NOVEL PARADIGM FOR THE REAL-TIME MONITORING OF BACTERIAL PATHOGENECITY IN SWINE
	ANIMAL WELFARE IN FOOD PRODUCING ANIMALS
	EFFECTS OF FEED ADDITIVES TO DECREASE OVARIAN FUNCTION
	HOW STRESS INFLUENCES THE MIGRATION AND NUMBERS OF SALMONELLA IN SWINE

Publications

	CONSIDERATIONS WHEN USING PHYSIOLOGICAL DATA IN ASSESSING ANIMAL WELL-BEING- (15-Jun-04)
	EFFECTS OF MIXING STRESS ON PLASMA CORTISOL, CORTICOSTEROID-BINDING GLOBULIN AND FREE CORTISOL INDEX IN PRENATALLY-STRESSED PIGS- (15-May-04)
	BOTH PSYCHOLOGICAL STRESS AND PHYSICAL STRESS ALTER THE HYPOTHALAMIC-PITUITARY-ADRENAL AXIS IN SWINE- (15-Apr-04)
	ENVIRONMENT: EFFECT OF ANIMAL HEALTH- (26-Jan-04)
	ENVIRONMENT: ACCOMODATIONS FOR ANIMALS- (22-Oct-03)
	ENVIRONMENT: ACCOMMODATIONS FOR ANIMALS- (13-Oct-03)
	EFFECT OF MIXING AND TRANSPORTATION ON BEHAVIOR AND CORTISOL RESPONSE IN RELATION TO SALMONELLA INFECTION IN SWINE- (26-Jun-03)
	SUMMARY OF ASSESSMENT STRATEGIES- (27-May-03)
	SWINE PRODUCTION SYSTEMS: ANIMAL WELFARE CONSIDERATIONS- (10-Jan-03)
	BEEF CATTLE: BEHAVIOR MANAGEMENT AND WELL-BEING- (05-Jan-03)
	BEHAVIOR OF FEEDER PIGS HOUSED IN DEEP-BEDDED "HOOP" STRUCTURES- (06-Aug-02)
	EFFECT OF ELEVATED THERMAL TEMPERATURE AND EXOGENOUS CORTICOSTEROID DURING INCUBATION ON THE PHYSIOLOGY OF CHICKENS- (23-Jul-02)
	EFFECTS OF STALL SURFACE ON OCCUPACY AND POSTURAL CHANGES IN DAIRY COWS- (22-Jul-02)
	A BREED COMPARISON OF POST-PARTURIENT SOW BEHAVIORS RELATED TO MATERNAL ABILITY- (20-Jul-02)
	APPLICATION FOR BEHAVIORAL PHYSIOLOGY TO ADDRESS CHALLENGES IN PRODUCTION AGRICULTURE- (25-Mar-02)
	PRENATAL AND NEONATAL STRESS IN LIVESTOCK: CONSEQUENCES FOR PRODUCTION AND WELL-BEING- (14-Mar-02)
	PREWEANING SURVIVAL IN SWINE- (07-Mar-02)
	DEVELOPMENT OF THE CHICKEN AS A MODEL FOR PRENATAL STRESS- (30-Jan-02)
	MANAGEMENT TIPS TO REDUCE PRE-WEANING MORTALITY- (22-Jan-02)
	METHODS AND MEASUREMENTS TO ASSESS THE PHYSIOLOGICAL STATE OF LIVESTOCK- (01-Aug-01)
	METHODS AND MEASUREMENTS TO ASSESS THE PHYSIOLOGICAL STATE OF LIVESTOCK- (01-May-01)
	A COMPARISON OF EUROPEAN AND AMERICAN POLICIES ON PIG PRODUCTION- (01-Feb-01)
	PARSING THE CHARACTERISTICS OF A SIMULATED UDDER TO DETERMINE RELATIVE ATTRACTIVENESS TO PIGLETS IN THE 72 HOURS FOLLOWING PARTURITION- (30-Aug-04)
	ALTERNATIVE METHOD TO INDUCE MOLT THAT ADDRESSES HEN WELL-BEING- (04-Jun-04)
	EFFECTS OF PRE-NATAL STRESS ON THE RESULTING OFFSPRING- (02-Nov-03)
	ASSESSING ANIMAL WELFARE: SPECIFIC RESEARCH APPROACHES. THE EFFECTS OF RACTOPAMINE ON BEHAVIOR AND PHYSIOLOGY OF FINISHING PIGS- (27-May-03)
	EFFECT OF THERMAL AND HORMONAL MANIPULATION OF DEVELOPING CHICK EMBRYOS ON POST HATCH BEHAVIOR AND PHYSIOLOGY- (17-Mar-03)
	EFFECT OF MIXING AND TRANSPORTATION STRESS PARAMETERS ON THE RECRUDESCENCE OF SALMONELLA IN SWINE- (12-Nov-02)
	THE EFFECTS OF RACTOPAMINE ON BEHAVIOR AND PHYSIOLOGY OF FINISHING PIGS- (23-Oct-02)
	THE EFFECTS OF RACTOPAMINE - A BETA ADRENERGIC AGONIST - ON BEHAVIOR, HEART RATE AND STRESS HORMONES OF FINISHING PIGS- (24-Apr-02)
	THE EFFECTS OF RACTOPAMINE ON BEHAVIOR AND PHYSIOLOGY OF FINISHING PIGS- (20-Apr-02)
	MGA AS AN ALTERNATIVE MOLTING METHOD FOR HENS- (15-May-04)
	THE EFFECT OF CO-MINGLING LITTERS ON PIGLETS' SOCIAL BEHAVIOR, PERFORMANCE AND BEHAVIORAL TESTS- (22-Mar-04)
	EFFECTS OF PRE-NATAL STRESS ON PIGLET BEHAVIOR AND IMMUNOLOGICAL RESPONSE TO WEANING- (23-Jul-02)
	EFFECT OF NOREPINEPHRINE IN THE TRANSMISSION OF SALMONELLA BETWEEN SWINE- (10-Sep-04)
	TOLL-LIKE RECEPTORS 2 (TLR2) AND 4 (TLR4) OF PORCINE BLOOD LEUKOCYTES DURING HEAT-STRESS- (03-Mar-04)
	THE ISOLATION OF SIMULATED UDDER ELEMENTS TO DECREASE DANGER TO PIGLETS DUE TO CRUSHING- (23-Jul-02)
	GUIDELINES FOR THE ETHICAL USE OF ANIMALS- (01-Jan-02)
	REAL-TIME MONITORING OF SALMONELLA IN SWINE: SPECIFICITY AND SENSITIVITY OF BACTERIAL DETECTION THROUGH THE GASTROINFESTINAL TRACTS OF JUVENILE AND MARKET WEIGHT PIGS- (31-Jan-03)
	EFFECTS OF PRE-NATAL STRESS ON IMMUNOLOGICAL RESPONSE AND WEIGHT GAIN DURING THE GROWER FINISHER PERIOD- (01-Jan-03)
	DEVELOPMENT OF A NOVEL PARADIGM FOR THE REAL-TIME MONITORING OF BACTERIAL PATHOGENICITY IN SWINE- (22-Jul-02)