Abstract:

Ensiling fermentation is an important strategy of trans-seasonal preservation of crop straw and forage grass,which is also one of the traditional production methods of animal feed. The addition of silage additives during ensiling process plays an important role for the improvement of ensiling quality,aerobic stability,and utility value. In order to understand the study status and hotspot on silage additives,the literature on silage additives published during the period 2005-2020 were analyzed via the bibliometrics and comprehensive visual analysis based on the core collection of Web of Science and CNKI databases,aiming to provide helps for researchers in defining research direction,conducting scientific research and understanding the field hotspot. The results showed that there were 70 countries or regions,965 research institutions involved the research on silage additives,and the results were published in 187 journals,and cross-regional cooperation was frequent. the total number of publications increased substantially in recent years,suggesting that more and more researchers have begun to pay attention to the investigation on silage additives. The United States,Brazil,Canada and China were identified as the most productive country of researches and presented strong interactional cooperative relationship. Moreover,the literatures from the United States and Canada scholars were more cited frequently in comparation to other countries. The animal husbandry,agriculture and veterinary science are the main research discipline with the feature of multidisciplinary and interdisciplinary. For the past few years,the most attention of silage additives have been paid to lactic acid bacteria and cellulase,and the addition effects of additives on ensiling quality and aerobic stability have become a research hotspot in the field of silage additives,whether or not the single or mixed additives.

Key words: ensiling fermentation, silage additives, bibliometric, development trend