| Records |
| Author |
Nicol, C.J.; Brown, S.N.; Glen, E.; Pope, S.J.; Short, F.J.; Warriss, P.D.; Zimmerman, P.H.; Wilkins, L.J. |
| Title |
Effects of stocking density, flock size and management on the welfare of laying hens in single-tier aviaries |
Type |
Journal Article |
| Year |
2006 |
Publication |
British poultry science |
Abbreviated Journal |
Br Poult Sci |
| Volume |
47 |
Issue |
2 |
Pages |
135-146 |
| Keywords |
Animal Husbandry/*methods; *Animal Welfare; Animals; Body Constitution/*physiology; Chickens/*physiology; Crowding; Feathers; Female; *Housing, Animal/standards; Mortality; Organ Size; Oviposition/physiology; Population Density; Population Dynamics; Random Allocation |
| Abstract |
Management practices, stocking rate and flock size may affect laying hen welfare but there have been few replicated studies in commercial non-cage systems that investigate this. This study used a broad range of physical and physiological indicators to assess the welfare of hens in 36 commercial flocks. Six laying period treatments were examined with each treatment replicated 6 times. It was not possible to randomly allocate treatments to houses, so treatment and house were largely confounded. Three stocking rates were compared: 7 birds/m(2) (n = 2450), 9 birds/m(2) (n = 3150) and 12 birds/m(2) in either small (n = 2450) or large (n = 4200) flocks. In addition, at 12 birds/m(2), in both small and large flocks, birds were subjected to either standard (SM) or modified (MM) management. MM flocks had nipple drinkers and no nest-box lights. Bone strength, fracture incidence, heterophil:lymphocyte (H:L) ratio, live weight, organ weights, serum creatine, serum osmolality, muscle pH and faecal corticosterone were measured on samples of birds at the end of the rearing period and at the end of lay. During the laying period, mortality, production and integument condition were recorded at regular intervals. Birds housed at 9 birds/m(2) had higher mortality than birds housed at 12 birds/m(2) by the end of lay, but not higher than birds housed at 7 birds/m(2). Birds housed at 7 and 9 birds/m(2) had lower percent liver weight, and worse plumage condition than most of the 12 bird/m(2) treatments. Modified management tended to improve plumage condition. There were no clear effects of flock size on the welfare indicators recorded. At the end of the rearing period fracture incidence was almost negligible and H:L ratio was within a normal range. By the end of lay fracture incidence was 60% and H:L ratio was high, with no treatment effect for either measure. This, together with information on faecal corticosterone, feather loss and mortality, suggests that the welfare of birds in all treatments was relatively poor by the end of lay. |
| Address |
School of Veterinary Science, University of Bristol, Langford House, Langford BS40 5DU and ADAS Gleadthorpe, Meden Vale, Mansfield, Notts NG20 9PF, England. c.j.nicol@bristol.ac.uk |
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English |
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Series Issue |
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Edition |
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| ISSN |
0007-1668 |
ISBN |
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Conference |
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| Notes |
PMID:16641024 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
65 |
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| Author |
Wilkins, L.J.; Brown, S.N.; Zimmerman, P.H.; Leeb, C.; Nicol, C.J. |
| Title |
Investigation of palpation as a method for determining the prevalence of keel and furculum damage in laying hens |
Type |
Journal Article |
| Year |
2004 |
Publication |
The Veterinary record |
Abbreviated Journal |
Vet. Rec. |
| Volume |
155 |
Issue |
18 |
Pages |
547-549 |
| Keywords |
Animal Husbandry/methods; Animal Welfare; Animals; Bone and Bones/*injuries; Chickens/*injuries; Female; Fractures, Bone/diagnosis/epidemiology/*veterinary; Great Britain/epidemiology; Housing, Animal/standards; Oviposition; Palpation/methods/*veterinary; Poultry Diseases/*diagnosis/epidemiology; Prevalence; Sensitivity and Specificity |
| Abstract |
Old breaks of the keel and furculum were identified by palpation in 500 end-of-lay hens from 10 flocks housed in free-range and barn systems, and the results were compared with the results obtained by a full dissection and inspection. The method was considered to be sufficiently precise to be used as a diagnostic tool although people using it would need to be trained. The results obtained by dissection indicated that 50 to 78 per cent of the birds in the flocks had breaks of the furculum and keel, but no other breaks of bones were detected. |
| Address |
Department of Clinical Veterinary Science, University of Bristol, Bristol BS40 5DU |
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English |
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Series Issue |
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Edition |
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| ISSN |
0042-4900 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:15559420 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
70 |
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| Author |
Nicol, C.J.; Potzsch, C.; Lewis, K.; Green, L.E. |
| Title |
Matched concurrent case-control study of risk factors for feather pecking in hens on free-range commercial farms in the UK |
Type |
Journal Article |
| Year |
2003 |
Publication |
British poultry science |
Abbreviated Journal |
Br Poult Sci |
| Volume |
44 |
Issue |
4 |
Pages |
515-523 |
| Keywords |
*Aggression; Analysis of Variance; Animal Husbandry/methods; Animals; Case-Control Studies; Chickens/*physiology; Feathers; Female; Multivariate Analysis; Odds Ratio; Regression Analysis; Species Specificity |
| Abstract |
1. The aim of the study was to compare the management and husbandry of free-range flocks in the UK where feather pecking was either present (case) or absent (control). 2. One hundred flocks were enrolled into a concurrent case-control study: 50 where birds had recently started feather pecking, and 50 matched control flocks where birds of the same age had not started feather pecking. 3. Information was obtained from a detailed interview with the flock manager, and by direct inspection of the flock, house and range. 4. Initial univariate analyses revealed that case flocks were more likely to comprise ISA Brown than Lohmann, were more likely to be restricted from litter areas to prevent floor eggs, and were less likely to use the outside range. 5. Cluster analysis indicated that feather pecking was not associated with any particular husbandry system. 6. The only influential risk factor significant in the multivariable conditional logistic regression analysis was use of the outdoor range. The risk of feather pecking was reduced 9-fold in flocks where more than 20% of birds used the range on sunny days (odds ratio = 0.12). Use of the range was positively associated with the presence of trees and/or hedges on the range. |
| Address |
Department of Clinical Veterinary Science, University of Bristol, England. c.j.nicol@bris.ac.uk |
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English |
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Edition |
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| ISSN |
0007-1668 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:14584840 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
79 |
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| Author |
McGreevy, P.D.; Cripps, P.J.; French, N.P.; Green, L.E.; Nicol, C.J. |
| Title |
Management factors associated with stereotypic and redirected behaviour in the thoroughbred horse |
Type |
Journal Article |
| Year |
1995 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
| Volume |
27 |
Issue |
2 |
Pages |
86-91 |
| Keywords |
Animal Husbandry/*methods; Animals; Horse Diseases/psychology/*therapy; Horses; Risk Factors; *Stereotyped Behavior; Time Factors |
| Abstract |
A greater knowledge of the effect of management factors is required to investigate the ontogeny of abnormal behaviour in the stabled horse. A postal survey of racehorse (flat) trainers yielded information about 22 yard and management factors. The relationship of the factors to the prevalence of abnormal behaviour was analysed by logistic regression. Management factors related to the time spent in the stable showed the strongest associations with stereotypic behaviour. The risk of horses performing abnormal behaviour increased: 1) as the amount of forage fell below 6.8 kg/day, 2) when bedding types other than straw were used, 3) when the total number of horses on the yard was fewer than 75, 4) in association with box designs that minimised contact between neighbouring horses, 5) when hay, rather than other types of forage, was used. |
| Address |
Department of Animal Health and Husbandry, School of Veterinary Science, University of Bristol, Langford, UK |
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English |
Summary Language |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0425-1644 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:7607155 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
91 |
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| Author |
Trim, C.M.; Moore, J.N.; Clark, E.S. |
| Title |
Renal effects of dopamine infusion in conscious horses |
Type |
Journal Article |
| Year |
1989 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
| Volume |
|
Issue |
7 |
Pages |
124-128 |
| Keywords |
Animals; Blood Pressure/drug effects/physiology; Consciousness/*physiology; Creatinine/blood; Dopamine/administration & dosage/*pharmacology; Dose-Response Relationship, Drug; Female; Heart Rate/drug effects/physiology; Horses/*physiology; Infusions, Intravenous/veterinary; Kidney/blood supply/*drug effects/physiology; Osmolar Concentration; Potassium/blood; Random Allocation; Regional Blood Flow/drug effects/physiology; Renal Artery/drug effects/physiology/ultrasonography; Sodium/blood; Time Factors; Ultrasonography/methods/veterinary; Urination/physiology |
| Abstract |
An ultrasonic flow probe was implanted around a branch of the left renal artery in five horses. The effects of dopamine were studied in the unsedated horses 10 days after surgery. Three experiments, separated by at least two days, were performed in random order on each horse. In two experiments, dopamine was infused intravenously for 60 mins at either 2.5 and 5.0 micrograms/kg bodyweight (bwt)/min. Saline was infused for 60 mins before and after each infusion, and for 180 mins in the third experiment as a control. Renal blood flow increased during administration of dopamine at both dose rates (P = 0.0001). Urine volume increased (P = 0.055), and osmolality decreased (P < 0.05), with infusion of dopamine at 5.0 micrograms/kg bwt/min. Arterial blood pressure and heart rate were not significantly affected. Fractional excretions of sodium and potassium were not significantly changed with dopamine infusion. The higher dopamine dose rate was accompanied by dysrhythmias in some horses. |
| Address |
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602, USA |
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English |
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Conference |
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| Notes |
PMID:9118094 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
99 |
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| Author |
Alexander, F. |
| Title |
Multiple fistulation of the horse's large intestine |
Type |
Journal Article |
| Year |
1970 |
Publication |
The British veterinary journal |
Abbreviated Journal |
Br. Vet. J. |
| Volume |
126 |
Issue |
11 |
Pages |
604-606 |
| Keywords |
Animals; Cecum/physiology; Colon/physiology; Horses/*physiology; Intestinal Fistula; Intestine, Large/*physiology; *Intubation, Gastrointestinal; Methods |
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English |
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Abbreviated Series Title |
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Edition |
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| ISSN |
0007-1935 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:5492494 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
115 |
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| Author |
Kirkpatrick, J.F.; Turner, A. |
| Title |
Absence of effects from immunocontraception on seasonal birth patterns and foal survival among barrier island wild horses |
Type |
Journal Article |
| Year |
2003 |
Publication |
Journal of applied animal welfare science : JAAWS |
Abbreviated Journal |
J Appl Anim Welf Sci |
| Volume |
6 |
Issue |
4 |
Pages |
301-308 |
| Keywords |
Animals; Animals, Newborn; Animals, Wild/*physiology; Birth Rate; Case-Control Studies; Contraception, Immunologic/methods/*veterinary; Egg Proteins/administration & dosage; Female; Horses/*physiology; Maryland/epidemiology; Membrane Glycoproteins/administration & dosage; Population Control; Pregnancy; *Receptors, Cell Surface; *Reproduction; Seasons; Vaccines, Contraceptive/administration & dosage |
| Abstract |
Despite a large body of safety data, concern exists that porcine zonae pellucidae (PZP) immunocontraception--used to manage wild horse populations--may cause out-of-season births with resulting foal mortality. Our study at Assateague, Maryland indicated the effects of immunocontraception on season of birth and foal survival between 1990 and 2002 on wild horses from Assateague Island. Among 91 mares never treated, 69 (75.8%) of foals were born in April, May, and June (in season). Among 77 treated mares, 50 (64.9%) were born in season. Of 29 mares foaling within 1 year after treatment (contraceptive failures), 20 (68.9%) were born in season. Of 48 mares treated for greater than 2 years then withdrawn from treatment, 30 (62.5%) of 48 foals were born in season. There were no significant differences (p <.05) between either treatment group or untreated mares. Survival did not differ significantly among foals born in or out of season or among foals born to treated or untreated mares. Data indicate a lack of effect of PZP contraception on season of birth or foal survival on barrier island habitats. |
| Address |
Science and Conservation Center Zoo Montana, Billings, Montana 59106, USA. jkirkpatrick@montana.net |
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English |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1088-8705 |
ISBN |
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Expedition |
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| Notes |
PMID:14965784 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
140 |
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| Author |
Kirkpatrick, J.F.; Turner, A. |
| Title |
Reversibility of action and safety during pregnancy of immunization against porcine zona pellucida in wild mares (Equus caballus) |
Type |
Journal Article |
| Year |
2002 |
Publication |
Reproduction (Cambridge, England) Supplement |
Abbreviated Journal |
Reprod Suppl |
| Volume |
60 |
Issue |
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Pages |
197-202 |
| Keywords |
Animals; *Animals, Wild; Antigens/administration & dosage; Contraception, Immunologic/methods/*veterinary; Egg Proteins/administration & dosage; Female; Fertility; *Horses; Immunization, Secondary/veterinary; Membrane Glycoproteins/administration & dosage; Population Control; Pregnancy; *Receptors, Cell Surface; Safety; Swine; Time Factors; Vaccines, Contraceptive/*administration & dosage |
| Abstract |
Contraceptive management of publicly valued wildlife species requires safeguards to ensure that these populations are preserved in a healthy state. In addition, reversibility of contraceptive effects and safety in pregnant animals are major concerns. A population of wild horses has been immunized against porcine zona pellucida (PZP) over a 12 year period on Assateague Island National Seashore, MD (ASIS). Mares initially received one or two 65 microg inoculations and once a year 65 microg booster inoculations, all delivered by dart. All young mares aged > 2 years were treated with PZP for 3 consecutive years regardless of whether they have bred successfully and they were then removed from treatment until they had foaled. All mares vaccinated for 1 or 2 consecutive years became fertile again and 69% of mares treated for 3 consecutive years returned to fertility. All five mares treated for 4 or 5 consecutive years have also returned to fertility, but over longer periods of time. Mares treated for 7 consecutive years have not returned to fertility, but several, while still infertile, have started ovulating again. There was no difference in survival rates between foals born to treated and untreated mares, and PZP treatment of pregnant mares did not affect subsequent fertility of their female offspring. |
| Address |
Science and Conservation Center, ZooMontana, Billings 59106, USA. zoolab@wtp.net |
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English |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1477-0415 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:12220160 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
141 |
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| Author |
Turner, A.; Kirkpatrick, J.F. |
| Title |
Effects of immunocontraception on population, longevity and body condition in wild mares (Equus caballus) |
Type |
Journal Article |
| Year |
2002 |
Publication |
Reproduction (Cambridge, England) Supplement |
Abbreviated Journal |
Reprod Suppl |
| Volume |
60 |
Issue |
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Pages |
187-195 |
| Keywords |
Animals; *Animals, Wild; Antigens/administration & dosage; Body Constitution; Contraception, Immunologic/methods/*veterinary; Egg Proteins/administration & dosage; Female; *Horses; Longevity; Membrane Glycoproteins/administration & dosage; Population Control; Population Dynamics; *Receptors, Cell Surface; Swine; Vaccines, Contraceptive/administration & dosage |
| Abstract |
Contraception is becoming a common approach for the management of captive and wild ungulates yet there are few data for contraceptive effects on entire populations. Management-level treatment of mares with porcine zona pellucida (PZP) vaccine resulted in zero population growth of the Assateague Island wild horse population within 1 year of initiation of treatment. Contraceptive efficacy was 90% for mares treated twice in the first year and annually thereafter. For mares given a single initial inoculation, contraceptive efficacy was 78%. The effort required to achieve zero population growth decreased, as 95, 83 and 84% of all adult mares were treated in each of the first 3 years, compared with 59 and 52% during the last 2 years. Mortality rates for mares and foals after the initiation of management-level treatments decreased below historic and pretreatment mortality rates of approximately 5%. Two new age classes have appeared among treated animals (21-25 years and > 25 years), indicating an increase in longevity among treated animals. Body condition scores for all horses, all adult mares and non-lactating mares increased significantly between summer 1989 and autumn 1999 but did not change significantly in lactating mares. These results provide reliable data for the construction of realistic models for contraceptive management of free-roaming or captive ungulate populations. |
| Address |
Assateague Island National Seashore, Berlin, MD 21811, USA |
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English |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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1477-0415 |
ISBN |
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Conference |
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| Notes |
PMID:12220158 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
142 |
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| Author |
Kirkpatrick, J.F.; Turner, J.W.J.; Liu, I.K.; Fayrer-Hosken, R.; Rutberg, A.T. |
| Title |
Case studies in wildlife immunocontraception: wild and feral equids and white-tailed deer |
Type |
Journal Article |
| Year |
1997 |
Publication |
Reproduction, fertility, and development |
Abbreviated Journal |
Reprod Fertil Dev |
| Volume |
9 |
Issue |
1 |
Pages |
105-110 |
| Keywords |
Animals; Antigens/immunology; Contraception, Immunologic/*veterinary; *Deer; *Equidae; Female; Immunization, Secondary; Pest Control/*methods; Pregnancy; Swine; Vaccines/administration & dosage; Zona Pellucida/immunology |
| Abstract |
Non-lethal management methods are required for wild equids that are protected by law and for deer inhabiting areas where lethal controls are not legal or safe. Single or multiple inoculations of porcine zona pellucida (PZP) vaccine have been delivered to wild horses and deer by means of darts. Contraceptive efficacy in horses after two inoculations ranged from 90% to 100%, and after a single inoculation ranged from 19% to 28%. Mares given a controlled-release form of the vaccine had foaling rates ranging from 7% to 20%. No detectable changes in social organization or behaviours among treated horses occurred. Contraceptive effects were reversible after 4 consecutive years of treatment but 5-7 years of treatment resulted in ovulation failure and decreased urinary oestrogen concentrations. Among deer, two inoculations were 70-100% effective in preventing fawns, but one inoculation yielded a contraceptive efficacy of < or = 20%, with pregnancies occurring late in the breeding season; a single annual booster inoculation reduced fertility to 20% in the second year. Energy costs of extended breeding seasons were less than those resulting from pregnancy. After two years of treatment, ovaries appeared normal. These studies suggest that PZP immunocontraception can be successfully applied to certain free-roaming populations of wild horses and deer. |
| Address |
ZooMontana, Billings 59108, USA |
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Place of Publication |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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1031-3613 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:9109199 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
143 |
| Permanent link to this record |
