Bibliographic mapping of heat tolerance in farm animals.

• Bibliographic mapping was used to identify major research groups and trends for heat tolerance in farm animals. • Major research countries are the USA, China, Brazil, India, Australia and UK with 54% of all publications. • There was a gradual drift in heat stress studies from animal physiology towards genomics and cellular biology. • This area of research is growing 3x faster than publication rates in general. • Most papers are on cattle, indicating the need for studies with other species. This study looks at the bibliographic mapping of citation, co-occurrence of keywords, co-citation and bibliographic coupling for heat tolerance in farm animals. Data was obtained from Scopus (Elsevier) and analysed in Vosviewer. Several salient points emerge from our analysis. We found a total of 1728 documents from 102 countries, of which 54% are from six countries (USA, China, Brazil, India, Australia and UK). While heat tolerance is important, Global South countries have recently become more important in this topic. Nevertheless, researchers from this region appear relatively isolated using the metrics of this study. One potential factor contributing to isolation could be lack of funding. This is discussed in the light of current Article Processing Charges. We also note a gradual drift in heat stress studies from animal physiology towards genomics and cellular biology. The paper can help understanding tendencies in this field of research and may point to future actions within the research community. This paper also shows the need to strengthen studies in less favoured areas and with species such as small ruminants, whereby small holders may be harder hit by climate change. Biases in the analysis could arise due to low citations from recent papers or those not indexed in Scopus. [Display omitted] [ABSTRACT FROM AUTHOR]