Effects on Feeding Goats with Pennisetum.purpureum Schum cv.Taiwan

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.

Effect of Pennisetum purpureum Schum cv. Guiminyin on Growth Performance of Geese

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.

Effect of Pennisetum purpureum Schum cv. Guiminyin on Milk Yield and Quality of Jersey Cattle at Lactation Stage

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.

台湾象草饲喂山羊的效果

选用努比亚成年母羊30只,随机分为3组,每组10只,分别饲喂由台湾象草、桂牧1号杂交象草以及华南象草组成的日粮,试验期60d,分别对饲草营养价值、采食量、生长情况及经济效益进行测定分析。结果表明:台湾象草饲喂山羊增重效果明显,日增重达144.44±17.80g,与对照相比分别高出了32.37%和88.48%,且饲料报酬高,料肉比为19.10∶1,经济效益显著。从总体来看,台湾象草营养价值高,适口性好,是饲喂山羊的优良牧草。

台湾象草区域试验研究

于2006--2008年在广西南宁、百色、湖南长沙3个不同生态区以桂牧1号杂交象草为对照，对广西畜牧研究所引进的台湾象草进行了区域试验。结果表明：台湾象草适应性广，生长速度快，干草产量（46351．32～53903．84kg／hm2）比对照桂牧1号杂交象草（41919．12～44137．66kg/hm2）增加10．02％～23．73％，草质柔软，蛋白质含量（10．5％）比对照高冉9．4％，是适应性极强的优质牧草，可在亚热带地区应用推广。

桂闽引象草对泌乳期娟姗奶牛产奶量及乳品质的影响

为探索桂闽引象草在奶牛业生产中的饲用价值,试验选用泌乳期娟珊奶牛20只,随机分为2组,每组10只,分别饲喂由桂闽引象草及桂牧1号杂交象草组成的日粮组合,试验期90d。结果表明:桂闽引象草营养价值高,适口性好,饲喂娟珊奶牛效果明显,产奶量较试验前提高了5.4%,平均日产奶量为11.65kg/头。乳脂率、乳蛋白以及乳总固体物质均较对照组有所提高。用桂闽引象草饲喂娟姗奶牛可以提高泌乳奶牛的产奶量和乳品质。

桂闽引象草对肉鹅生长性能的影响

为了探索桂闽引象草在肉鹅生产中的饲用价值,本文以合浦狮头鹅为研究对象,以桂闽引象草作为青饲料源,王草作为对照品种,研究了饲喂桂闽引象草对肉鹅生长性能的影响,结果表明:桂闽引象草生物产量高,营养品质好,在同等饲喂条件下,肉鹅采食量大于对照品种,平均日增重达51.45±3.49g/只,较对照增加了13.36%;料重比为4.93±0.35%,比对照组少耗料19.47%(P<0.05)。由此可见,饲喂桂闽引象草能够取得较好的经济效益。

杂交狼尾草和桂牧1号杂交象草的核型分析

为狼尾草属种质资源的多样性保护、利用及遗传育种研究提供理论依据,采用常规压片法对杂交狼尾草和桂牧1号杂交象草的染色体数目及核型进行分析。结果表明:2种牧草的染色体基数为x=7,均为3倍体,染色体数目为2n=21条。杂交狼尾草的核型公式2n=3x=21=18m(6SAT)+3sm,染色体相对长度组成I.R.L=6S+3M1+6M2+6L,第1组和第5组染色体含有随体;桂牧1号杂交象草核型公式2n=3x=21=3m+18sm,染色体相对长组成I.R.L=6S+6M1+3M2+6L,未发现随体。杂交狼尾草和桂牧1号杂交象草核型不对称系数分别为60.79%和65.06%,分别属于1B型和2B型,桂牧1号杂交象草的进化程度高于杂交狼尾草。

南方三种暖季型牧草品种的比较研究

对台湾甜象草、桂牧一号杂交象草、皇竹草进行了为期两年的比较试验研究。结果表明,三个牧草品种均能适应试验环境条件。甜象草、桂草、皇竹草的鲜草年产量分别为220.85t/hm2,163.18t/hm2,186.20t/hm2;粗蛋白含量分别为17.39%,19.02%,20.91%,粗脂肪含量分别为6.37%,5.39%,4.69%;粗纤维含量分别为33.49%,32.22%,33.58%。台湾甜象草较耐寒,越冬后恢复生长快,抗性较强,试验期间未发现病虫害,是一种高产优质的牧草,值得推广应用。

Comparative Study of Three Warm-season Forage Varieties in Southern China

The plant height,tiller number,yield of three warm-season forage varieties in Southern China were studied for consecutive two years.The result showed that the three varieties all adapted to the environmental conditions.The annual fresh grass yield of Pennisetum purpureum Schum ev.Taiwan,Guimu-1 hybrid P.purpureum and P.sinese Roxb were 220.85,163.18,186.20 t/hm^2;the crude protein content were 17.39%,19.02%and 20.91%;the crude fat content were 6.37%,5.37%and 4.69%;and the crude fiber content were 33.49%,32.22%and 33.58%,respectively.P.purpureum Schum ev.Taiwan had stronger cold resistance,fast growth after overwintering and strong resistance,and no plant diseases and insect pests were found during the test.P.purpureum Schum ev.Taiwan is a high yield and high quality forage variety,which is worth popularizing and applying.

台湾象草平衡施肥试验

通过不同的施肥处理方案研究台湾象草的氮、磷、钾需要量及其最佳配比模式。结果表明,台湾象草通过合理的氮、磷、钾配方平衡施肥,能够达到较好的生产效果及经济效益,其中以N2P1K2效果最佳,即氮肥300 kg/hm2、磷肥49.95 kg/hm2、钾肥200.1 kg/hm2,产量较对照(无肥处理)增幅44.50%,其经济效益达到最高水平。