Monthly Archives: August 2015

Overview of research on tail biting in pigs

The German Federal Research Institute for Animal Health (FLI) has reviewed current research on tail biting in pigs.

The report entitled “Übersicht über Untersuchungen zum Themenkomplex „Schwanzbeißen” makes specific recommendations as to how to best tackle the tail biting problem. The report also has an extensive appendix (under ‘documents’) listing projects, main project results and references on tail biting.

Twenty-six different research projects were counted in Germany alone. Many other projects were also listed in other EU countries (The Netherlands, Belgium, UK, Ireland, Denmark, Finland, Sweden, Norway, Spain and Hungary). Also the EFSA and FareWellDock activities were noted, as well as the International Pig Welfare Conference in Denmark in April 2015 (see our Soundbite posts 1, 2, 3, 4 and 5).

The report has a detailed list of recommendations split for the farm and regional level. At farm level risk assessment, gradual reduction of tail docking, networking, demonstration farms, and trying-out of practical solutions to prevent and treat tail biting are mentioned. At the regional and national level the report mentions the collection and distribution of knowledge in various ways, the coordination of activities, the building of networks of tail biting experts, education/training, the installation of an information platform and the support of research projects using standardised protocol and cooperation with other EU countries.

The report noted a trend for tail biting to start at rather earlier ages (shortly after weaning, but also even before weaning, as has previously been observed by Dr. Ursinus).

It was also noted that on average 70% of the pigs used in the 26 research and field projects in Germany had severe tail lesions. Since these projects were focussing on (improvements of) current housing conditions, it may be questioned whether and to what extent current systems are suited to finally succeed in stopping completely the current practice of tail docking.

Soundbites Pig Welfare Conference: 1. Introduction

On 29 – 30 April 2015 Danish Minister for Food, Agriculture and Fisheries, Dan Jørgensen hosted an international conference “Improving Pig Welfare – what are the ways forward?“.

During the two-day conference, top academics, experts and political stakeholders from around the world debated and worked to prepare the way forward in improving pig welfare in Europe and ultimately in the world. Ministers from the Netherlands, Germany and Sweden participated.

Below you find ‘soundbites’ from the conference, all more or less related to the subjects of study in the FareWellDock project. This is part 1. Parts 2-5 are other blog posts on this website.

It is truly remarkable that we have been able to gather almost four hundred participants to discuss the ways forward for pig welfare; some are joining us from as far away as the state of Iowa, USA, and Australia
Dan Jørgensen, Danish Minister for Food, Agriculture and Fisheries

fwd PWConf DK Minists IMG_1817c
Left to right: Dan Jørgensen, Minister for Food, Agriculture and Fisheries, DK. Sharon Dijksma, Minister for Agriculture, NL. Sven-Erik Bucht, Minister for Rural Affairs, SE. Christian Schmidt, Federal Minister of Food and Agriculture, DE.

At the conference a position paper was signed by
Christian Schmidt, Federal Minister of Food and Agriculture, DE
Sven-Erik Bucht, Minister for Rural Affairs, SE
Dan Jørgensen, Minister for Food, Agriculture and Fisheries, DK
Sharon Dijksma, Minister for Agriculture, NL

The position paper, final version(PDF)

Video of signing

Dan Jørgensen
Dan Jørgensen, Danish Minister for Food, Agriculture and Fisheries

Tear staining is a potential tool for on-farm pig welfare assessment on commercial farms

Below is the abstract of a recent scientific publication from FareWellDock researchers:

Telkänranta H, J.N. Marchant-Forde and A. Valros. 2015. Tear staining in pigs: a potential tool for welfare assessment on commercial farms. Animal, available on CJO2015. doi:10.1017/S175173111500172X.

Tear staining
Tear staining (picture by H. Telkänranta)

Tear staining or chromodacryorrhea refers to a dark stain below the inner corner of the eye, caused by porphyrin-pigmented secretion from the Harderian gland. It has been shown to be a consistent indicator of stress in rats and to correlate with social stress and a barren environment in pigs. The current study was, to our knowledge, the first to test it on commercial pig farms as a potential welfare indicator. The study was carried out on three commercial farms in Finland, in connection to a larger study on the effects of different types of manipulable objects on tail and ear biting and other behavioural parameters. Farm A was a fattening farm, on which 768 growing-finishing pigs were studied in 73 pens. Farm B had a fattening unit, in which 656 growing-finishing pigs were studied in 44 pens, and a farrowing unit, in which 29 sows and their litters totalling 303 piglets were studied in 29 pens. Farm C was a piglet-producing farm, on which 167 breeder gilts were studied in 24 pens. Data collection included individual-level scoring of tear staining; scoring of tail and ear damage in the growing-finishing pigs and breeder gilts; a novel object test for the piglets; and a novel person test for the growing-finishing pigs on Farm B and the breeder gilts on Farm C. On Farm A, tear staining was found to correlate with tail damage scores (n=768, r s =0.14, P<0.001) and ear damage scores (n=768, r s =0.16, P<0.001). In the growing-finishing pigs on Farm B, tear staining of the left eye correlated with tail damage (n=656, r s =0.12, P<0.01) and that of the right eye correlated with ear damage (n=656, r s =0.10, P<0.01). On Farm A, tear-staining sores were lower in the treatment with three different types of manipulable objects as compared with controls (mean scores 3.3 and 3.9, respectively, n=31, F29=4.2, P<0.05). In the suckling piglets on Farm B, tear staining correlated with the latency to approach a novel object (n=29, r p =0.41, P<0.05). Although correlations with tail and ear damage were low, it was concluded that tear staining has promising potential as a new, additional welfare indicator for commercial pig farming. Further research is needed on the mechanisms of tear staining.

Tear staining
Tear staining (Picture by H. Telkänranta)