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The policy of "changing grain to forage" is an important means to optimize the structure of farming and breeding, a powerful measure to boost the agricultural economy, and the core of promoting high-quality development of the aquaculture industry. Based on the double difference model, panel data from eight provinces implementing the "changing grain to forage" policy was selected to explore the impact of the implementation of the "changing grain to forage" policy on the scale of livestock and poultry breeding. The research results show that the implementation of the "changing grain to forage" policy has a certain driving effect on the expansion of livestock and poultry breeding scale in China. The level of intelligent breeding and fixed asset investment has a significant promoting effect on the scale of livestock and poultry breeding. The price of calves and the intensity of disease occurrence have inhibitory effects on the scale of livestock and poultry farming. Further research has found that the implementation of the "changing grain to forage" policy can significantly promote the large-scale development of livestock and poultry in breeding farms. The level of intelligent breeding has a more significant positive effect on large-scale breeding farms. Compared to medium scale farms, the intensity of disease occurrence has a relatively small adverse impact on large-scale farms. [ABSTRACT FROM AUTHOR]

One of the most important reasons restricting the rapid development of animal husbandry in China is the shortage of protein raw materials. Urtica cannabina L. is a perennial herb rich in nutrient component and can be seen as feed to develop and utilize. The paper mainly studies the application in pigs, cattle, sheep and chicken as well as gives suggestions on the development and utilization of Urtica cannabina L., aiming to provide reference for the subsequent research and application of Urtica cannabina L. as an unconventional feed resource in livestock and poultry breeding. [ABSTRACT FROM AUTHOR]

China has a huge output of vegetables and fruits, and processed vegetable and fruit residue is rich in nutrients, rich in crude protein, crude fiber, vitamins, polyphenols, polysaccharides, flavonoids and other components, but it is not easy to preserve and has poor palatability, so it can not be directly used as animal feed. Screening of high-quality yeast and other probiotics can improve the nutritional value of vegetable and fruit residue feed and reduce feed cost, which has a positive effect on fruit and vegetable processing industry and livestock and poultry breeding industry. The paper reviewed the yeast species screening, fermentation technology and application of fermented vegetable and fruit residue in animal feed, aiming to provide reference for the research and application of fermented vegetable and fruit residue in livestock and poultry breeding. [ABSTRACT FROM AUTHOR]

The high-quality development of animal husbandry is necessary support to promote rural revitalization, and also key to building Chinese path to modernization. From perspective of connotation and era positioning, animal husbandry refers to future development of animal husbandry towards ecology, safety, and other aspects to achieve highquality and efficient development, comprehensively improve quality and quantity of social livestock and poultry product supply. Facing Chinese path to modernization, high-quality development of China's animal husbandry not only conforms to goal orientation of ecological and open cooperation in new era, but also follows Chinese law of economic and industrial layout. Therefore, it is proposed to consolidate the foundation and accelerate construction of modern livestock and poultry breeding and breeding industry. Improve security and establish an animal epidemic prevention system. Suggestions on strengthening competition and improving animal husbandry policies and measures to better play the supporting role of high-quality development of animal husbandry in process of Chinese path to modernization. [ABSTRACT FROM AUTHOR]

Chinese medicine is widely used in disease prevention and control, and a lot of Chinese medicine residue is produced in China every year. If these residues are not properly disposed of, they will cause damage to the environment and waste resources. The application of fermented Chinese medicine residue in the feed industry can not only alleviate the problem of feed resource shortage, but also improve the performance of livestock and poultry production. The paper reviews the fermentation process of Chinese medicine residue, the advantages of fermentation and its application in livestock and poultry production, providing reference for the resource utilization of Chinese medicine residues, reducing the cost of livestock and poultry breeding and improving the quality of livestock products. [ABSTRACT FROM AUTHOR]