Chair of Animal Welfare
Chair of Animal Welfare
Ozpinar H.,Istanbul Aydin University |
Erhard M.,Chair of Animal Welfare |
Ahrens F.,Chair of Animal Welfare |
Kutay C.,Istanbul University
Journal of Animal and Veterinary Advances | Year: 2010
Maintaining gut health is important for the production of high quality and profitable poultry. The goal of this study was to examine the effects of supplemental mannan ohgosaccharide (Bio-MOS®), Vitamin E (VE) and C (VC) on the growth performance and immune response of broilers given a corn based diet over a 6 weeks experimental period. About 1 day old male broilers (n = 300) were randomly distributed to 4 groups (75 birds in each group and 15 birds in each subgroup for repetation 5 times) and reared under similar conditions. Standard husbandry and good management practices were followed that met or exceeded industry guideline. At each feeding, the following treatments were administered: control (no Bio-MOS®, VE and VC), 1.5 g kg-1 Bio-MOS®, 500 μg kg-1 VE and 500 μg kg-1 VC. Body Weights (BW), Feed Intake (FI) and Feed Conversion Ratio (FCR) were measured on day 1, 21 and 42. Blood samples were taken from vena ulnaris every 7 days and were analyzed on IgG concentration. The results showed that there was no significant difference in BW, FI and FCR among the treatment groups. During the 6 weeks of trial period considering plasma IgG levels significant differences were only found as following: compared to control group it was significantly lower in VE group at week 1 and 2, higher in VC and Bio-MOS® groups at week 2 and lower in Bio-MOS® group at week 6. Additionally, at 4 week lowest (0.90±0.06 mg, n = 15) and at 5 week highest (2.85±0.18 mg, n = 15) plasma IgG level was found after applying the dietary treatment in Bio-Mose group. Consequently, this data suggest that supplementation of Bio-MOS®, VE or VC may not improve either broiler performance or immune response in healthy broilers. © Medwell Journals, 2010.
PubMed | Statistical Consulting Unit StaBLab and Chair of Animal Welfare
Type: | Journal: ALTEX | Year: 2016
Although the rehoming of laboratory dogs has gained importance, scientific data that evaluate the process are lacking. Therefore, 145 laboratory beagles were tested before leaving the research facility (Test 1). The new owners were surveyed using a standardized telephone interview 1 week (n = 143) and 12 weeks (n = 126) after adoption. The behavior test was repeated with 68 dogs in their new homes 6 weeks after adoption (Test 2). The predictive power of Test 1 as well as the relevance of various factors was analyzed. We found no significant differences between Tests 1 and 2 regarding the behavior reactions. In contrast, body language scores and heart rates changed significantly, indicating a more relaxed state of the dogs in their new homes.The interviews revealed a significant change toward desired behavior in most dogs within the 11 week period (p < 0.0001). The main behavior problems included separation problems (28%; n = 126), destroying objects (24%), and not being housebroken (39%).Owners of 9 dogs returned the animals, resulting in a rehoming success rate of 94%. The predictive power of Test 1 was low to moderate. Test 1 revealed a significant age effect (P = 0.0066), with younger and older dogs reaching higher scores than dogs approximately 2 years old. Dogs that had been born and reared in the research facility scored higher than dogs that had originally been acquired from a commercial breeder (P = 0.0257). Altogether, the rehoming of laboratory dogs is a valuable alternative to euthanasia.
Ahrens F.,Chair of Animal Welfare |
Platz S.,Chair of Animal Welfare |
Link C.,Chair of Animal Welfare |
Mahling M.,Ludwig Maximilians University of Munich |
And 2 more authors.
Journal of Dairy Science | Year: 2011
The objective was to investigate the effect of changing the flooring in the alleys of a barn from slatted concrete to slatted rubber mats on hoof disorders and animal hygiene in 44 loose-housed Brown Swiss dairy cows. Cows were examined for disorders of the hind hooves (hemorrhages, white line fissures, ulcers, heel horn erosion, and digital dermatitis) and for skin lesions. The dirtiness of the animals and of the floor was recorded. Climatic (temperature, humidity) and ammonia gas conditions were measured. Evaluations were carried out when the cows were housed on a concrete slatted floor and after 4 and 10 mo on soft flooring (slatted rubber mats, 29-mm thick). The anatomical portion of claw (medial, lateral), number of lactations (parity), and days in milk were included as covariates in the statistical model. Changing the flooring from slatted concrete to slatted rubber mats increased the score for white line fissures [1.0±0.3 (concrete) vs. 2.5±0.4 (10 mo rubber mats)] and influenced air humidity (i.e., the difference in the absolute humidity between the inside and outside of the barn increased from 1.5±0.1 to 1.7±0.2g/m3), whereas the other hoof disorders, skin lesions (score of 8.7±0.3), the dirtiness of the animals (score of 5.9±0.3), and the floor (score of 2.1±0.1), and ammonia gas concentration (2.6±0.3mg/kg) were not affected (overall scores or measures; mean ± SE). Lateral claws were more affected (except for heel horn erosion) than medial claws (estimated effects between 1.3±0.2 and 3.0±0.6). Parity influenced hoof disorders (except for hemorrhages) and skin lesions (estimated effects between -0.6±0.3 and 0.5±0.2). Days in milk influenced hoof disorders, but had no effect on skin lesions and on the dirtiness of the animal. Irrespective of floor type, the slots (2.6±0.1) were dirtier than the slats (1.6±0.1). In conclusion, covering slatted concrete flooring with slatted rubber mats partially impaired hoof health but did not influence skin lesions or the dirtiness of the cows or the floor. Similar results were found for climatic conditions, as ammonia gas concentration was not affected, but absolute humidity increased in the barn when rubber mats were present. © 2011 American Dairy Science Association.
PubMed | Chair of Animal Welfare and Chair of Anatomy
Type: Journal Article | Journal: Poultry science | Year: 2016
The dust-bathing behavior of Lohmann Selected Leghorn hens was compared in 4 enriched colony housing systems and in an aviary system. The enriched colony housing systems differed especially in the alignment and division of the functional areas dust bath, nest, and perches. Forty-eight-hour video recordings were performed at 3 time-points during the laying period, and focal animal sampling and behavior sampling methods were used to analyze the dust-bathing behavior. Focal animal data included the relative fractions of dust-bathing hens overall, of hens bathing in the dust-bath area, and of those bathing on the wire floor throughout the day. Behavior data included the number of dust-bathing bouts within a predefined time range, the duration of 1 bout, the number of and reasons for interruptions, and the number of and reasons for the termination of dust-bathing bouts. Results showed that the average duration of dust bathing varied between the 4 enriched colony housing systems compared with the aviary system. The duration of dust-bathing bouts was shorter than reported under natural conditions. A positive correlation between dust-bathing activity and size of the dust-bath area was observed. Frequently, dust baths were interrupted and terminated by disturbing influences such as pecking by other hens. This was especially observed in the enriched colony housing systems. In none of the observed systems, neither in the enriched colony housing nor in the aviary system, were all of the observed dust baths terminated normally. Dust bathing behavior on the wire mesh rather than in the provided dust-bath area generally was observed at different frequencies in all enriched colony housing systems during all observation periods, but never in the aviary system. The size and design of the dust-bath area influenced the prevalence of dust-bathing behavior in that small and subdivided dust-bath areas reduced the number of dust-bathing bouts but increased the incidence of sham dust bathing on the wire mesh.