In view of the fact that cages and bait are not allowed in large water surface aquiculture,1-2 kinds of new green feeds"plankton+microecologics"were developed to solve the problems of yield reduction,slow gr...In view of the fact that cages and bait are not allowed in large water surface aquiculture,1-2 kinds of new green feeds"plankton+microecologics"were developed to solve the problems of yield reduction,slow growth and difficulty in fishing of aquatic organisms caused by extensive mode.The new green feed is ecological,environmentally friendly and residue-free,which not only supplements nutrition but also meets the requirements of environmental protection.展开更多
Green-lipped mussel, Perna viridis is a warm water mussel species that is distributed widely in the Indo-Pacific regions. It is a commercially important species and has demonstrated a great culture potential in tropic...Green-lipped mussel, Perna viridis is a warm water mussel species that is distributed widely in the Indo-Pacific regions. It is a commercially important species and has demonstrated a great culture potential in tropical countries. The feeding behavior of P. viridis is influenced by both seston concentration and its nutritional values. It is shown the mussels exhibit higher ingestion rate when the organic content of the seston is higher. Interestingly, several studies have reported that P. viridis can demonstrate selective feeding behavior towards phytoplankton. Short term studies have shown that the P. viridis exhibits preferentially ingestion of dinoflagellates, while long term studies show that the P. viridis has a higher growth rate during diatom blooms. Nevertheless, spawning of P. viridis is induced by high primary productivity at relatively high sea water temperature. In the temperate countries, spawning is seasonal but normally occurs in summer. In the tropical countries, however, the P. viridis has been shown to spawn all year-round with two peaks which coincide with monsoon seasons. The site selection is critically important when considering the green mussel culture. Feasibility study for P. viridis farming is normally carried out first in order to evaluate the environmental conditions of the site. This paper attempts to review the current knowledge of biology, selective feeding behaviour, growth, reproductive and the aquaculture site selection methods for green-lipped mussel.展开更多
To analyze the nutritional value as feed,the aerial stem and leaves of Lippia nodiflora( L.) Greene and Phyla nodiflora( L.) Greene were sampled to measure the nutritional indices. The nutritional indices were also co...To analyze the nutritional value as feed,the aerial stem and leaves of Lippia nodiflora( L.) Greene and Phyla nodiflora( L.) Greene were sampled to measure the nutritional indices. The nutritional indices were also compared with common forage grass,and the development value of L. nodiflora as feed was analyzed. Compared with P. nodiflora,L. nodiflora had obvious fast-growing and high-yield abilities. The contents of crude fat,crude fiber,crude ash,lysine,vitamin C,Ca,and Fe in L. nodiflora were obviously higher than that in P. nodiflora,but the content of crude protein and total P in L. nodiflora were significantly lower than that in P. nodiflora. Compared with common forage feed ryegrass,alfalfa,millet straw and corn straw,L. nodiflora had higher contents of crude fat and crude ash and lower contents of crude fiber and crude protein. Therefore,L. nodiflora had higher development value as feed.展开更多
植物提取物是畜禽饲料添加剂的重要组成部分,在畜禽养殖中起到抗氧化、抗炎、抗应激和提高生产性能的作用。目前植物提取物的制备多采用常规的有机溶剂(乙醇、氯仿和乙酸乙酯)提取,有机溶剂的易燃、易挥发和毒性会对提取人员造成伤害,...植物提取物是畜禽饲料添加剂的重要组成部分,在畜禽养殖中起到抗氧化、抗炎、抗应激和提高生产性能的作用。目前植物提取物的制备多采用常规的有机溶剂(乙醇、氯仿和乙酸乙酯)提取,有机溶剂的易燃、易挥发和毒性会对提取人员造成伤害,提取后的废液会造成环境的污染。天然低共熔溶剂(natural deep eutectic solvents, NADESs)是一种以初级代谢产物等天然成分为原料的新型绿色提取溶剂,具有制备简单、低毒或无毒、价廉易得、可生物降解、可回收利用等优点,是未来替代传统有机提取溶剂的新型溶剂,已广泛应用到化工、食品、中药提取等技术领域。文章综述了天然低共熔溶剂在植物提取物中的最新应用进展,旨在为天然低共熔溶剂的推广和应用提供指导。展开更多
文摘In view of the fact that cages and bait are not allowed in large water surface aquiculture,1-2 kinds of new green feeds"plankton+microecologics"were developed to solve the problems of yield reduction,slow growth and difficulty in fishing of aquatic organisms caused by extensive mode.The new green feed is ecological,environmentally friendly and residue-free,which not only supplements nutrition but also meets the requirements of environmental protection.
文摘Green-lipped mussel, Perna viridis is a warm water mussel species that is distributed widely in the Indo-Pacific regions. It is a commercially important species and has demonstrated a great culture potential in tropical countries. The feeding behavior of P. viridis is influenced by both seston concentration and its nutritional values. It is shown the mussels exhibit higher ingestion rate when the organic content of the seston is higher. Interestingly, several studies have reported that P. viridis can demonstrate selective feeding behavior towards phytoplankton. Short term studies have shown that the P. viridis exhibits preferentially ingestion of dinoflagellates, while long term studies show that the P. viridis has a higher growth rate during diatom blooms. Nevertheless, spawning of P. viridis is induced by high primary productivity at relatively high sea water temperature. In the temperate countries, spawning is seasonal but normally occurs in summer. In the tropical countries, however, the P. viridis has been shown to spawn all year-round with two peaks which coincide with monsoon seasons. The site selection is critically important when considering the green mussel culture. Feasibility study for P. viridis farming is normally carried out first in order to evaluate the environmental conditions of the site. This paper attempts to review the current knowledge of biology, selective feeding behaviour, growth, reproductive and the aquaculture site selection methods for green-lipped mussel.
基金Supported by 948 Program of State Forestry Administration"Vegetation Restoration Material Lippia nodiflorav for Rock Desertification Area in Gorge and Introduction of Its Cultivation and Breeding Technology"(2009-2012)Chongqing Key Laboratory of Three Gorges Area Forest Ecological Protectionand Restoration(CSTC,2007CA1001)
文摘To analyze the nutritional value as feed,the aerial stem and leaves of Lippia nodiflora( L.) Greene and Phyla nodiflora( L.) Greene were sampled to measure the nutritional indices. The nutritional indices were also compared with common forage grass,and the development value of L. nodiflora as feed was analyzed. Compared with P. nodiflora,L. nodiflora had obvious fast-growing and high-yield abilities. The contents of crude fat,crude fiber,crude ash,lysine,vitamin C,Ca,and Fe in L. nodiflora were obviously higher than that in P. nodiflora,but the content of crude protein and total P in L. nodiflora were significantly lower than that in P. nodiflora. Compared with common forage feed ryegrass,alfalfa,millet straw and corn straw,L. nodiflora had higher contents of crude fat and crude ash and lower contents of crude fiber and crude protein. Therefore,L. nodiflora had higher development value as feed.
文摘植物提取物是畜禽饲料添加剂的重要组成部分,在畜禽养殖中起到抗氧化、抗炎、抗应激和提高生产性能的作用。目前植物提取物的制备多采用常规的有机溶剂(乙醇、氯仿和乙酸乙酯)提取,有机溶剂的易燃、易挥发和毒性会对提取人员造成伤害,提取后的废液会造成环境的污染。天然低共熔溶剂(natural deep eutectic solvents, NADESs)是一种以初级代谢产物等天然成分为原料的新型绿色提取溶剂,具有制备简单、低毒或无毒、价廉易得、可生物降解、可回收利用等优点,是未来替代传统有机提取溶剂的新型溶剂,已广泛应用到化工、食品、中药提取等技术领域。文章综述了天然低共熔溶剂在植物提取物中的最新应用进展,旨在为天然低共熔溶剂的推广和应用提供指导。