Animal welfare is a topic often thought to reside outside mainstream biology. The complexity of the methods used to assess welfare (such as health, physiology, immunological state, and behavior) require an understanding of a wide range of biological phenomena. Furthermore, the "welfare" of an animal provides a framework in which a diversity of its responses can be understood as fitness-enhancin...

The use of models in the life sciences has greatly expanded in scope and advanced in technique in recent decades. However, the range, type and complexity of models used in farm animal welfare is comparatively poor, despite the great scope for use of modeling in this field of research. In this paper, we review the different modeling approaches used in farm animal welfare science to date, discuss...

Farm animal welfare has been gradually recognized as an important issue in most parts of the world. In China, domestic animals were traditionally raised in backyard and treated as an important component of family wealth. Industrialization of animal production brings forth the farm animal welfare concerns recently in China, yet the modern concept of animal welfare has not been publicized and a c...

Despite their popularity and place in our tourism history, in recent years zoos have undergone considerable change in both their structure and function. Whilst remaining attractive places to visit, zoos now seek a new image – one that emphasizes their role in conservation and public education. However, changes in public expectations and the zoo’s own objectives mean that today there is far more...

Vaccination promotes animal welfare by protecting animal health, but it also has other welfare benefits, e.g. recent investigations have looked at the potential of vaccines in immunoneutering such as immunocastration--a humane alternative to the painful traditional methods. Similarly, vaccination can be used during disease outbreaks as a viable alternative to stamping-out, thus avoiding the wel...

Food safety, protection of the environment and animal welfare are three concerns consumers have about modern food production systems. Standards dealing with these three issues can be in conflict, and finding ways to reduce this conflict is essential as international standards governing animal welfare develop. These conflicts can be reduced if flexible animal welfare standards are animal-based a...

This paper discusses the standard welfare economics assumption anthropocentric welfarism, i.e. that only human well-being counts intrinsically. New survey evidence from a representative sample in Sweden is presented, indicating that anthropocentrism is strongly rejected, on average. However, most people appear to have a consequentialistic ethics, in line with conventional welfare economics. The...

The concept of sentience concerns the capacity to have feelings. There is evidence for sophisticated cognitive concepts and for both positive and negative feelings in a wide range of nonhuman animals. All vertebrates, including fish, as well as some molluscs and decapod crustaceans have pain systems. Most people today consider that their moral obligations extend to many animal species. Moral de...

Public and consumer pressure for assurances that farm animals are raised humanely has led to a range of private and public animal welfare standards, and for methods to assess compliance with these standards. The standards usually claim to be science based, but even though researchers have developed measures of animal welfare and have tested the effects of housing and management variables on wel...