[Objectives]The paper was to study the cutting propagation technique of Pennisetum purpureum Schum and to provide a technical reference for establishing an efficient cutting propagation method.[Methods]Six treatments ...[Objectives]The paper was to study the cutting propagation technique of Pennisetum purpureum Schum and to provide a technical reference for establishing an efficient cutting propagation method.[Methods]Six treatments were set up using P.purpureum cv.Guiminyin and P.purpureum cv.Guimu-1 as test materials,including 1-node oblique insertion,1-node oblique insertion+rooting powder,1-node transverse burial,2-node oblique insertion,2-node oblique insertion+rooting powder and 2-node transverse burial.The following indices were observed and determined for P.purpureum cuttings:emergence rate,rooting rate,root number,longest root length,fresh root weight,plant height,number of tillers,number of leaves,and fresh stem and leaf weight.[Results]In the 2-node cutting+rooting powder treatment,Guiminyin and Guimu-1 exhibited the highest survival rate,root growth indices,and stem and leaf growth indices,with the emergence rates of 94.29%and 90.26%,respectively.The 2-node cutting treatment followed closely behind,while the 1-node cutting treatment had the lowest indices.Under the same treatment,Guimuyin exhibited higher mean values for plant height,number of leaves,fresh stem and leaf weight,longest root length,and fresh root weight compared to Guimu-1.However,it had lower mean number of tillers,and emergence rate and rooting rate of the 1-node cutting treatment compared to Guimu-1.[Conclusions]The P.purpureum cuttings thrived in the 2-node cutting+rooting powder treatment,and the overall cutting effect of Guiminyin was superior to that of Guimu-1.展开更多
To explore the feeding value of Pennisetum purpureum Schum cv. Guiminyin in production of geese, effects of feeding the green fodder on growth performance of geese were studied, while P. purpureum K. Scbumacb x P. typ...To explore the feeding value of Pennisetum purpureum Schum cv. Guiminyin in production of geese, effects of feeding the green fodder on growth performance of geese were studied, while P. purpureum K. Scbumacb x P. typhoideum Rich cv. Reyan No. 4 was used as control. The results showed that P. purpureum Schum cv. Guiminyin had high biomass and good nutritional quality, and geese intake of the forage was greater than that of the control variety. The average daily gain was （51.45 ±3.49）g/goose, which was increased by 13.36% compared with control; feed gain ratio was （4.93 ±0.35）%, and feed consumption was reduced by 19.47% compared with control （P 〈0.05）. Thus, it could be concluded that feeding geese with P. purpureum Schum ev. Guiminyin could obtain good economic benefit.展开更多
The study aimed to research the forage value of Pennisetum purpureum Schum cv.Guiminyin in dairy industry and then provide scientific support for feeding jersey cattle with P.purpureum Schum cv.Guiminyin.Totally 20 je...The study aimed to research the forage value of Pennisetum purpureum Schum cv.Guiminyin in dairy industry and then provide scientific support for feeding jersey cattle with P.purpureum Schum cv.Guiminyin.Totally 20 jersey cattle at lactation stage were selected and divided into two groups randomly,10 cattle each group.The cattle were fed with P.purpureum Schum cv.Guiminyin and P.purpureum cv.Mott×（P.americanum×P.purureum）cv.Guimu No.1,respectively.The results showed that P.purpureum Schum cv.Guiminyin performed well in both nutritional value and palatability,and received remarkable effects on jersey cattle.The milk yield was 5.4%higher than that of before test,and the average daily milk yield was（11.65±0.07）kg/cattle.Compared with control group,milk fat percentage,lactoprotein content and overall milk-solid content were improved somewhat.Feeding jersey cattle with P.purpureum Schum cv.Guiminyin at lactation stage could increase their milk yield and milk quality.展开更多
A total of 30 Nubian adult goats were randomly divided into three groups, with 10 goats in each group. The goats in different groups were fed with penn- isetum, purpureum Schum cv. Taiwan, [P. Purpureum. cv. Mort x （...A total of 30 Nubian adult goats were randomly divided into three groups, with 10 goats in each group. The goats in different groups were fed with penn- isetum, purpureum Schum cv. Taiwan, [P. Purpureum. cv. Mort x （P. americanum x P. purureum） cv. Guimu No. 1] and P. purpureum cv. Southern China respectively. In the 60-days-test, the nutritional value of the forages, the intake, growth and economic benefits of the goats were determined and analyzed. The resuits showed that, the weight gain of the goats feeding with P. purpureum Schum cv. Taiwan was remarkable, with the daily weight gain reaching （144.44 ± 17.80） g, which were 32.37% and 88.48% higher than the control groups. The feed reward in P. purpureum Schum cv. Taiwan group was the highest, with feed conversion rate of 19. 10：1 and the significant economic benefits. On the whole, P. purpureum Schum cv. Taiwan with a high nutritional value and a good palatability was a kind of excellent forages for goats.展开更多
为探讨发酵桂闽引象草替代部分日粮对鸡肠道菌群的影响,试验选定30日龄的东兰乌鸡4羽,随机分成4组,每组1羽。使用发酵桂闽引象草分别替代5%(1组)、10%(2组)、15%(3组)及0%(K组)的日粮;以1、2、3组为试验组,K组为对照组,进行饲养试验。...为探讨发酵桂闽引象草替代部分日粮对鸡肠道菌群的影响,试验选定30日龄的东兰乌鸡4羽,随机分成4组,每组1羽。使用发酵桂闽引象草分别替代5%(1组)、10%(2组)、15%(3组)及0%(K组)的日粮;以1、2、3组为试验组,K组为对照组,进行饲养试验。采集鸡大肠内容物,对其细菌16S r DNA扩增子V3~V4区进行二代高通量测序,分析菌群的物种组成及相对丰度差异。结果表明:Chao1指数,2组(813.500)>3组(782.892)>1组(765.444)>K组(751.243);Shannon指数,K组(7.386)>2组(7.327)>3组(7.098)>1组(6.968)。从chao1指数来看,物种丰富度最高的是2组,最低的是K组;三个试验组的物种丰富度均高于对照组。从Shannon指数来看,对照组的菌群多样性高于试验组;三个试验组的菌群多样性以2组最高,以1组最低。拟杆菌门和厚壁菌门在1、2、3、K组的相对丰度分别为43.59%、55.33%、56.84%、56.01%和49.89%、40.32%、38.79%、39.95%,在各组中占比分别为93.48%、95.65%、95.63%、95.96%,是四组中的优势门,试验组和对照组中的相对丰度差异不明显。变形菌门在1、2、3组中的相对丰度(4.08%、1.41%、2.05%)高于对照组(0.97%),分别为对照组的4.2、1.45、2.11倍。互养菌门在1、2、3组中的相对丰度(0.72%、0.9%、0.49%)高于对照组(0.32%),分别为对照组的2.25、2.81、1.53倍。相对丰度前10位的属隶属于两个门(拟杆菌门和厚壁菌门)。多形杆状菌属在各组中的相对丰度分别为28.4%、29.4%、31.84%、28.23%,是四组中的优势属;其相对丰度在试验组和对照组中差异不明显。瘤胃球菌属和巨单胞菌属在1、2、3组中的相对丰度(8.03%、5.21%、3.97%和5.44%、2.05%、2.06%)高于对照组(2.44%和0.15%),分别是对照组的3.29、2.19、2.20倍和36.26、13.66、13.73倍。用发酵桂闽引象草替代部分日粮,鸡肠道菌群丰富度增高,多样性降低,对鸡肠道优势菌影响不明显,最主要的影响是变形菌门、互养菌门的数量增多及厚壁菌门中的瘤胃球菌属、巨单胞菌属的数量增多。展开更多
Elephant grass is a tropical forage plant widely spread in Brazil, used mainly in the livestock sector and in cattle feeding. Because of its high productivity and photosynthetic capacity, this culture has also been co...Elephant grass is a tropical forage plant widely spread in Brazil, used mainly in the livestock sector and in cattle feeding. Because of its high productivity and photosynthetic capacity, this culture has also been considered an alternative source of renewable energy. Six clones of elephant grass (Pennisetum purpureum Schum.) were evaluated under five levels of nitrogen fertilization (100, 200, 400, 800, and 1600 kg·N·ha-1), in a randomized-block design with a split-plot arrangement with three replicates, from April 2010 to December 2012, in the city of Campos dos Goytacazes— RJ, Brazil. The objective was to obtain estimates of variation in morpho-agronomic traits and biomass quality. We observed that genotypes Cameroon-Piracicaba and Gua?u I/Z2 have great potential to be used, with maximum dry matter yields of 60.97 and 44.10 t·ha-1 per cut for energy purposes among the studied genotypes.展开更多
基金the Fundamental Research Funds for Sichuan Animal Science Academy(SASA202106)the Modern Agricultural Industry System Sichuan Mutton Sheep Innov Team(sccxtd-2023-14)Sichuan Province Breeding Research Grant(2021YFYZ0013).
文摘[Objectives]The paper was to study the cutting propagation technique of Pennisetum purpureum Schum and to provide a technical reference for establishing an efficient cutting propagation method.[Methods]Six treatments were set up using P.purpureum cv.Guiminyin and P.purpureum cv.Guimu-1 as test materials,including 1-node oblique insertion,1-node oblique insertion+rooting powder,1-node transverse burial,2-node oblique insertion,2-node oblique insertion+rooting powder and 2-node transverse burial.The following indices were observed and determined for P.purpureum cuttings:emergence rate,rooting rate,root number,longest root length,fresh root weight,plant height,number of tillers,number of leaves,and fresh stem and leaf weight.[Results]In the 2-node cutting+rooting powder treatment,Guiminyin and Guimu-1 exhibited the highest survival rate,root growth indices,and stem and leaf growth indices,with the emergence rates of 94.29%and 90.26%,respectively.The 2-node cutting treatment followed closely behind,while the 1-node cutting treatment had the lowest indices.Under the same treatment,Guimuyin exhibited higher mean values for plant height,number of leaves,fresh stem and leaf weight,longest root length,and fresh root weight compared to Guimu-1.However,it had lower mean number of tillers,and emergence rate and rooting rate of the 1-node cutting treatment compared to Guimu-1.[Conclusions]The P.purpureum cuttings thrived in the 2-node cutting+rooting powder treatment,and the overall cutting effect of Guiminyin was superior to that of Guimu-1.
基金Supported by National Science and Technology Project(2011BAD17B00)Science and Technology Project of Guangxi Provincial Bureau(GYMK201633019)+1 种基金Fund of Distinguished Experts in Guangxi Province&Guangxi Engineering Technology Center of Grassland Science(2015GCZX014)National Modern Agricultural Industry Technology System of Guangxi Beef Cattle,Mutton Sheep Industry Innovation Team(nycytxgxcxtd-09-04)
文摘To explore the feeding value of Pennisetum purpureum Schum cv. Guiminyin in production of geese, effects of feeding the green fodder on growth performance of geese were studied, while P. purpureum K. Scbumacb x P. typhoideum Rich cv. Reyan No. 4 was used as control. The results showed that P. purpureum Schum cv. Guiminyin had high biomass and good nutritional quality, and geese intake of the forage was greater than that of the control variety. The average daily gain was （51.45 ±3.49）g/goose, which was increased by 13.36% compared with control; feed gain ratio was （4.93 ±0.35）%, and feed consumption was reduced by 19.47% compared with control （P 〈0.05）. Thus, it could be concluded that feeding geese with P. purpureum Schum ev. Guiminyin could obtain good economic benefit.
文摘The study aimed to research the forage value of Pennisetum purpureum Schum cv.Guiminyin in dairy industry and then provide scientific support for feeding jersey cattle with P.purpureum Schum cv.Guiminyin.Totally 20 jersey cattle at lactation stage were selected and divided into two groups randomly,10 cattle each group.The cattle were fed with P.purpureum Schum cv.Guiminyin and P.purpureum cv.Mott×（P.americanum×P.purureum）cv.Guimu No.1,respectively.The results showed that P.purpureum Schum cv.Guiminyin performed well in both nutritional value and palatability,and received remarkable effects on jersey cattle.The milk yield was 5.4%higher than that of before test,and the average daily milk yield was（11.65±0.07）kg/cattle.Compared with control group,milk fat percentage,lactoprotein content and overall milk-solid content were improved somewhat.Feeding jersey cattle with P.purpureum Schum cv.Guiminyin at lactation stage could increase their milk yield and milk quality.
基金Supported by Provincial Bureau of Science and Technology Project(2010001)Province agricultural science and technology achievements transformation projects(1346004-4)
文摘A total of 30 Nubian adult goats were randomly divided into three groups, with 10 goats in each group. The goats in different groups were fed with penn- isetum, purpureum Schum cv. Taiwan, [P. Purpureum. cv. Mort x （P. americanum x P. purureum） cv. Guimu No. 1] and P. purpureum cv. Southern China respectively. In the 60-days-test, the nutritional value of the forages, the intake, growth and economic benefits of the goats were determined and analyzed. The resuits showed that, the weight gain of the goats feeding with P. purpureum Schum cv. Taiwan was remarkable, with the daily weight gain reaching （144.44 ± 17.80） g, which were 32.37% and 88.48% higher than the control groups. The feed reward in P. purpureum Schum cv. Taiwan group was the highest, with feed conversion rate of 19. 10：1 and the significant economic benefits. On the whole, P. purpureum Schum cv. Taiwan with a high nutritional value and a good palatability was a kind of excellent forages for goats.
文摘为探讨发酵桂闽引象草替代部分日粮对鸡肠道菌群的影响,试验选定30日龄的东兰乌鸡4羽,随机分成4组,每组1羽。使用发酵桂闽引象草分别替代5%(1组)、10%(2组)、15%(3组)及0%(K组)的日粮;以1、2、3组为试验组,K组为对照组,进行饲养试验。采集鸡大肠内容物,对其细菌16S r DNA扩增子V3~V4区进行二代高通量测序,分析菌群的物种组成及相对丰度差异。结果表明:Chao1指数,2组(813.500)>3组(782.892)>1组(765.444)>K组(751.243);Shannon指数,K组(7.386)>2组(7.327)>3组(7.098)>1组(6.968)。从chao1指数来看,物种丰富度最高的是2组,最低的是K组;三个试验组的物种丰富度均高于对照组。从Shannon指数来看,对照组的菌群多样性高于试验组;三个试验组的菌群多样性以2组最高,以1组最低。拟杆菌门和厚壁菌门在1、2、3、K组的相对丰度分别为43.59%、55.33%、56.84%、56.01%和49.89%、40.32%、38.79%、39.95%,在各组中占比分别为93.48%、95.65%、95.63%、95.96%,是四组中的优势门,试验组和对照组中的相对丰度差异不明显。变形菌门在1、2、3组中的相对丰度(4.08%、1.41%、2.05%)高于对照组(0.97%),分别为对照组的4.2、1.45、2.11倍。互养菌门在1、2、3组中的相对丰度(0.72%、0.9%、0.49%)高于对照组(0.32%),分别为对照组的2.25、2.81、1.53倍。相对丰度前10位的属隶属于两个门(拟杆菌门和厚壁菌门)。多形杆状菌属在各组中的相对丰度分别为28.4%、29.4%、31.84%、28.23%,是四组中的优势属;其相对丰度在试验组和对照组中差异不明显。瘤胃球菌属和巨单胞菌属在1、2、3组中的相对丰度(8.03%、5.21%、3.97%和5.44%、2.05%、2.06%)高于对照组(2.44%和0.15%),分别是对照组的3.29、2.19、2.20倍和36.26、13.66、13.73倍。用发酵桂闽引象草替代部分日粮,鸡肠道菌群丰富度增高,多样性降低,对鸡肠道优势菌影响不明显,最主要的影响是变形菌门、互养菌门的数量增多及厚壁菌门中的瘤胃球菌属、巨单胞菌属的数量增多。
文摘Elephant grass is a tropical forage plant widely spread in Brazil, used mainly in the livestock sector and in cattle feeding. Because of its high productivity and photosynthetic capacity, this culture has also been considered an alternative source of renewable energy. Six clones of elephant grass (Pennisetum purpureum Schum.) were evaluated under five levels of nitrogen fertilization (100, 200, 400, 800, and 1600 kg·N·ha-1), in a randomized-block design with a split-plot arrangement with three replicates, from April 2010 to December 2012, in the city of Campos dos Goytacazes— RJ, Brazil. The objective was to obtain estimates of variation in morpho-agronomic traits and biomass quality. We observed that genotypes Cameroon-Piracicaba and Gua?u I/Z2 have great potential to be used, with maximum dry matter yields of 60.97 and 44.10 t·ha-1 per cut for energy purposes among the studied genotypes.
