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这是一个关于活性干酵母在养猪中的应用效果介绍PPT,主要介绍了酵母与猪的微生态学、酵母微生态制剂在养猪上的研究进展、酵母在养猪上的应用效果实例、酵母制剂在养猪上的应用前景展望等内容。养猪业是我国农业中的重要产业,对保障肉食品安全供应有重要作用,目前我国养猪业正由传统养猪业向现代养猪业转变,无论是养殖模式、区域布局还是生产方式、生产能力都在发生显著变化。存在自主创新能力弱、食品安全问题突出、劳动力成本增高、原种依赖进口、疫病严重、环保压力大、饲料资源匮乏等诸多挑战。但也有自主创新条件改善、国际市场空间大、国内市场稳步增长、政府支持力度大等机遇。未来的发展方向主要在“适度规模养殖”、“智能猪业”、“动物福利”、“低碳排放”等4个方面。在2011年,中国猪平均存栏量4.68亿头,总出栏量6.62亿头,出栏率141%。为了更方便快捷的提供信息来源,养猪行业发明了一款手机应用APP(含Android、IOS版本)“豆粒养猪版”,欢迎点击下载活性干酵母在养猪中的应用效果介绍PPT哦。
活性干酵母在养猪中的应用效果介绍PPT是由红软PPT免费下载网推荐的一款行业PPT模板类型的PowerPoint.
活性干酵母在养猪中的应用效果
主要内容
猪消化道菌群的基本特点
活性干酵母
酵母与猪消化道有益菌群的关系
栖生(commensalism)或叫单利共生,是指两种微生物同时生长时,一方受益,而另一方不受任何影响。对收益者来讲,另一方可能为其提供一些基本的生存条件,但它还能从其它方面获得这些条件;另一方来说,即不从中受益,也不会受到损害。
兼性厌氧菌和专性厌氧菌是栖生关系的典型例子。
主要内容
Biological diversity of yeasts in the gastrointestinal tract of weaned piglets kept under different farm conditions.FEMS Yeast Research; Dec2008, Vol. 8 Issue 8, p1349-1356, 8p, 2 charts, 2 diagrams, 1 graph, 1 color
The study was conducted to determine yeasts present in the gastrointestinal tract (GIT) of piglets kept under experimental farm (EF) and commercial farm (CF) conditions. Ninety five German Landrace full- and half-sibling piglets were sacrificed at 39 days of age. Sixty eight piglets were weaned at 28th day of life, when they were offered one diet ad libitum. Twenty seven piglets remained unweaned by their dams. None of the piglets received any creep feed before weaning. Digesta samples were collected from 1/3 distal small intestine (SI), caecum and proximal colon. One hundred seventy three colonies of isolated yeasts were characterized by sequence analysis of the PCR-amplified D1/D2 domain of the 26S rRNA gene with following alignment of the recovered sequences to GenBank entries. From the 17 phylotypes found, isolates most closely related to Galactomyces geotrichum, Kazachstania slooffiae and Candida catenulata dominated in the GIT of CF piglets. Kazachstania slooffiae and Candida glabrata dominated in GIT of EF piglets. Sørenson and Morisita-Horn similarity indices between farms were low (0.44 and 0.54 respectively) and the Simpson diversity index was higher for EF (7.58) than for CF (4.34). The study brings new data on yeasts composition in the pig GIT and shows differences in yeasts biodiversity between farms operated at different hygiene conditions. [ABSTRACT FROM AUTHOR]
Brewer's yeast efficiently degrades phytate phosphorus in a corn-soybean meal diet during soaking treatment.Animal Science Journal; Aug2009, Vol. 80 Issue 4, p433-437, 5p, 4 charts
Microbes such as yeast and Aspergillus are known to produce phytase, and Aspergillus phytase has been used as a feed additive for improving phytate-phosphorus bioavailability in monogastric animals. We measured phytase activity in some by-products from fermented food and beverage productions by yeast and Aspergillus. The phytase activity was as high as 3577 and 2225 PU/kg DM in raw and dried brewer's yeasts, respectively. On the other hand, the phytase activity was approximately 400 PU/kg DM in white-wine yeast and red-wine yeast. The phytase activity was further low in natto (fermented soybean) residue, soy sauce cake, rice brewer's grain and the activity was not detected in dried corn-barley distiller's grain with soluble and sweet-potato distiller's residue. The stability of phytase against pepsin was much lower in the brewer's yeast than in an Aspergillus phytase preparation. On the other hand, the addition of raw brewer's yeast effectively degraded phytate phosphorus in a corn-soybean meal diet during soaking. These results suggest that phytase in the examined by-products is not suitable for the phytase source of conventional diets, but that the soaking treatment with a raw brewer's yeast is an alternative method for improving phytate-phosphorus bioavailability in corn-soybean meal diets for pigs. [ABSTRACT FROM AUTHOR]
活性干酵母对胃内容物菌落情况的影响
主要内容
(1)高活性干酵母在母猪上的应用效果
提高母猪泌乳力,提高仔猪断奶窝重;
解决母猪便秘问题;
降低粪便中病原菌数量,预防幼畜腹泻。
添加活性干酵母对断奶仔猪(保育后期)生产性能的影响
添加活性干酵母对断奶仔猪(保育后期)生产性能的影响
(2)高活性干酵母在乳仔猪上的应用效果
提高日增重
提高采食量,改善料比
降低腹泻率
料肉比降低:0.2-0.3 使用阶段:育肥猪浓缩料添加量:酵母250-300g/t (按照全价料折算) 效果:秋季换料腹泻率明显降低粪便成型度好,整粒玉米颗粒消失
(3)高活性干酵母在育肥猪上的应用效果
提高日增重
提高饲料转化率,改善料比
改善皮毛状况
主要内容
美国食品药物管理局(FDA)和美国饲料管理协会(AAFCO)公布的微生态制剂的菌株
1、乳酸杆菌属(Lactobacilleae):短乳杆菌(L. Brevis)、嗜酸乳杆菌(L. Acidophilus)、保加利亚乳杆菌(L. Bulgaricus)、干酪乳杆菌(L.Casei)、纤维二糖乳杆菌(L. Cellosus)、弯曲乳杆菌(L. Curvatus)、德氏乳杆菌(L. Delbruekii)、发酵乳杆菌(L. Fermentum)、罗特氏乳杆菌(L. Reuterii)、乳酸乳杆菌(L. lactis)、植物乳杆菌(L. Plantarum)。
2、双歧杆菌属(Bifidobactirium):青春双歧杆菌(B. adolescentis)、婴儿双歧杆菌(B. infantis)、动物双歧杆菌(B. animalis)、长双歧杆菌(B. longum)、嗜热双歧杆菌(B. thermophilum)、两歧双歧杆菌(B. bifidum)。
3、肠球菌属(Enterococcus):粪肠球菌(E.faecalis)又称粪链球菌(S. faecium)、屎肠球菌(E.faecium)又称屎链球菌(S. faecium)。
4、链球菌属(Streptococcus):嗜热链球菌(S. thermophilus)、乳酸链球菌(S. lactis) 又称乳酸乳球菌(L.lactis)、中间型链球菌(S. intermedius)、乳脂链球菌(S. cremoris)、二丁酮链球菌(S. diacetylactis)。
5、芽孢杆菌属(Bacillus):凝结芽孢杆菌(Bacillu coagulans)、缓慢芽孢杆菌(B. lentus)、枯草芽孢杆菌(B. subtilis)、地衣芽孢杆菌(B. lincheniforms)、短小芽孢杆菌(B. pumilus)。
6、明串珠菌属(Leuconostoc):肠膜明串珠菌(Leuconostoc mesenteroides)。
7、片球菌属(Pediococcus):乳酸片球菌(Pediococcus acidilacticii)、啤酒片 球菌(P. cerecisiae)、戊糖片球菌(P. pentosaceus)。
8、乳球菌属(Lactococcus):乳酸乳球菌(L.lactis)又称乳酸链球菌(S. lactis)。
9、丙酸杆菌属(Propionibacterium):谢氏丙酸杆菌(P.shermanii)、费氏丙酸杆菌(P. Freudenreichii)。
10、拟(类)杆菌属(Bacteroides):猪拟(类)杆菌(B. suis)、瘤胃生拟(类)杆菌(B. ruminocola)、多毛拟(类)杆菌(B. Capillosus)、嗜淀粉拟(类)杆菌(B. amylophilus)。
11、酵母菌属(Yeast):啤酒酵母或酿酒酵母(Saccharomyces cerevisiae)。
12、曲霉菌属(Aspergillus):黑曲霉(Aspergillus niger)、米曲霉(A. oryzae)
益生素饲料
1999年我国农业部公布了可以直接调喂动物的饲料级微生物
添加剂菌种如下:
干酪乳杆菌(Lactobacillus easei)植物乳杆菌(L.Planetarium)
嗜酸性乳杆菌(L.Acdophilus) 粪链球菌(Straptoccus faecium)
乳链球菌(S.Lactis) 枯草芽孢杆菌(Bacillus subtilis)
纳豆芽孢杆菌(B.natto) 乳酸片球菌(Pediococcusacidilacticii)
啤酒酵母(Saccharomyces cerevosiae) 产朊假丝酵母(Candida utilis)
沼泽红假单胞菌曲霉(Aspergllus) 屎链球菌 (E.faecium)
酵母的生产工艺简图
酵母 (经筛选的酵母菌种S.cerevisae)
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液体发酵
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4℃冷藏
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干燥
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包装
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成品
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取样检测
酵母益生菌研究方向
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