This overview is to introduce the characters,mechanism and applications of Bacillus subtilis natto as probiotics in ruminant production,and discuss the directions of the future studies.

These growth factors significantly influence the growth,development and function maturation of gastrointestinal tract in neonatal ruminants,and may take distinct effect on stimulating the growth of cells and tissues,promoting the gut absorption,increasing the secretion and activity of digestive enzymes and improving the immunity of animals.

Research progress of models for predicting ruminant methane emissions;

Advance in Strategies of Decrease Methane Emission in Ruminant;

Factors of effects on content of conjugated linoleic acid in ruminants;

Study on Vaccenic Fatty Acid Content in Milk and Meat from Ruminants;

Effects of Micro-elements on Rumen Fermentation of Ruminants;

A Review Regulations for the Digestion Metabolism of Carbohydrate and Nitrogenous in Ruminants;

Real-Time Fluorescence PCR Method for Identification of Ruminant Animals-derived Materials in Feedstuff;

This paper presented a detail estimation of methane emission from ruminant animals in Guangxi of China according to the calculation method by Organization for Economic Co-operation and Development(OECD) and Intergovernmental Panel on Climate Change(IPCC).

This review summarized the influence of DFM on health and performance of ruminant animals,moreover,information on underlying mechanisms was discussed.