The gastrointestinal (GI) tract is a critical organ system mediating nutrient uptake and use by the animal. Understanding factors that influence GI development, growth, and function is critical to improving management and therapeutic approaches to maximize health and production efficiency of livestock. These factors are diverse and include animal nutrition and nutrient interactions with the GI ...

recently organic agriculture as a most popular alternative production system has increasingly been considered by scientists, people and policymakers and governments in the world, and many research programs are directed to this sustainable production system. in organic agriculture it is hardly recommended to integrate plant with animal husbandry in agroecosystem. various animal products such as ...

Livestock producers are facing increasing pressure to reduce the environmental and animal-welfare impacts of production, while also managing challenge an increasingly variable climate diminishing resources. This perspective paper highlights role for animal scientists contribute sustainability future livestock systems. We argue need a broader, more inclusive integrated concept science, better co...

B. Nielsen*, S.M. Thamsborg, H.R. Andersen, T. Kristensen Organic Animal Health and Production, Department of Animal Science and Animal Health, Royal Veterinary Agricultural University, Groennegaardsvej 2, DK-1870 Frederiksberg C, Denmark Department of Animal Nutrition and Physiology, Danish Institute of Agricultural Sciences, Foulum, Postbox 50, 8830 Tjele, Denmark Department of Agricultural S...

Agricultural animal research has been immensely successful over the past century in developing technology and methodologies that have dramatically enhanced production efficiency of the beef, dairy, swine, poultry, sheep, and aquaculture industries. Most of this research effort has been conducted within the broad disciplines of genetics, physiology, and nutrition, but has become increasingly nar...

Ovarian Androgen Production in Cattle 3 F Mossa, F Jimenez-Krassel, JK Folger, JLH Ireland, GW 4 Smith, P Lonergan, ACO Evans, and JJ Ireland 5 6 School of Agriculture Food Science and Veterinary Medicine, and Conway 7 Institute of Biomedical and Biomolecular Research, College of Life 8 Sciences, University College Dublin, Belfield, Dublin 4, Ireland; Molecular 9 Reproductive Endocrinology Labo...

The methodology for the scientific assessment of animal welfare has developed rapidly in recent years and has become a major scientific discipline. The concepts of welfare, need, stress, health, pain, emotion and feeling are now clarified. In teaching, legislation and practical work referring to animal welfare, a clear definition that can be related to other concepts is needed. The welfare of a...