高原鼠兔饵料引诱剂的试验研究

为寻求一种饵料引诱剂 ,增加毒饵的适口性 ,以提高对高原鼠兔的防治效果 ,自制了五种引诱剂 ,采用笼养试喂的方法 ,进行引诱剂的试验研究 ,结果表明y1、y2 两种引诱剂对高原鼠兔的引诱效果较好     

发展木本饲料前景及其在水土保持中的地位

中国国民人均营养摄入水平在过去20年中有了显着提高,但摄入的动物蛋白还较低,随着生活水平的改善,国民对肉类食品的需求也从量的需求转到对质的需求,加快发展畜牧业是解决这些问题的重要途径,但我国面临的精饲料、蛋白饲料、绿色饲料缺乏和饲料总量不足的现实限制了畜牧业的快速发展。讨论了利用我国农区丰富多样的气候资源,利用荒山荒坡、地埂、田边地角等土地资源发展蛋白质含量高、生物量大、可多年受益、具有多种效益的木本饲料的重要性、可行性及前景,发展木本饲料在经济发展、水土保持和环境保护方面的作用和意义。     

反刍动物对不同方法加工处理青粗饲料的利用效果

总结了农作物秸秆、青贮饲料和苜蓿的国内外加工处理方法及反刍动物对其的利用效果。     

沙棘,白榆,刺槐叶粉颗粒饲料配制及喂兔试验

本文通过用沙棘、白榆、刺槐叶粉加工成的颗粒饲料进行的喂兔试验,探讨了这三种树叶作为林业饲料的开发价值。     

Potential of Fodder Soybean Genotypes for Phosphorus Removal in Poultry Manure-Enriched Soils

Plant-based phosphorus (P) remediation strategies have been suggested to reduce high P accumulation in soil. Eleven fodder soybean genotypes were evaluated to explore their potential for the removal of P from poultry manure-enriched soils. Field experiments were conducted at a site that had a history of heavy poultry manure applications. Green house experiments were conducted using the soils selected for field trials to confirm the results. Harvesting of whole plants, excluding roots of the genotypes, was done at the pod formation stages and plant samples were oven dried at 70°C for three days. The dry samples were ground and analyzed for total P content. Genotype 091734, provided the maximum P removal from amended and unamended soils. Fodder soybean genotypes could play an important role in the extraction of P from poultry manure-enriched soils, which are important from the ecological point of view.     

5种禾本科牧草草产量及营养品质比较

2002年5月~9月在内蒙古西辽河平原水浇地条件下进行了不同刈割方式下5种禾本科牧草的草产量及营养品质的比较研究。结果表明,鲜草草产量健宝、苏波丹二次刈割高于一次刈割,甜格雷兹、润宝、大力士一次刈割高于二次刈割;各品种干草草产量均以一次刈割高于二次刈割;受粗蛋白质含量的影响,粗蛋白质产量健宝、苏波丹、大力士二次刈割高于一次刈割,甜格雷兹、润宝、一次刈割高于二次刈割,综合产量及品质认为,健宝、苏波丹以二次刈割青饲喂利用为宜,甜格雷兹、润宝以一次刈割青贮利用较佳。     

四翅滨藜的表现性状及其在青海省的发展潜力

介绍了准常绿饲料灌木－－四翅滨藜（Ａｔｒｉｐｌｅｘ ｃａｎｅｓｃｅｎｓ）的生态习性与形态特性及其在国内外的引种栽培和推广利用情况,阐述陈秦作为饲料的诸多优良特性和在青海畜牧业中的发展潜力,及其在西北地区农业中的发展方向。     

6种热带亚热带豆科牧草抗寒性及营养品质比较

为了筛选华南地区适宜的优质冬季青饲料草种,本研究比较了旋扭山绿豆(Desmodium intortum)、大叶山蚂蟥(Desmodium laxiflorum)、异果山绿豆(Desmodium heterocarpum)、显脉山绿豆(Desmodium reticulatum)、糙毛假地豆(Desmodium heterocarpum var.strigosum)和柱花草(Stylosanthes guianensis)6种热带亚热带豆科牧草在广州越冬期的抗寒性及营养品质。结果表明,除柱花草外,其它5种豆科牧草均能保持青绿越冬,其中旋扭山绿豆和大叶山蚂蟥的叶绿素含量均显著高于其它牧草(P0.05)。旋扭山绿豆的净光合速率最高(P0.05),其次是大叶山蚂蟥(P0.05),因此这两种牧草具有相对较强的抗寒性;与其它牧草相比,旋扭山绿豆在冬季能保持较高的粗蛋白含量(15.99%~20.26%)(P0.05)以及较低的洗涤纤维(NDF 27.92%~30.89%、ADF 23.96%~27.06%)和缩合单宁含量(6.05~11.95mg·g~(-1))(P0.05),因而具有较高的营养价值。因此,旋扭山绿豆可以作为华南地区冬季豆科青饲料的潜在优选草种。     

日粮中使用低纤维饲料对奶牛消化情况影响的研究

【目的】研究在日粮中使用10 kg饲用甜菜替代3 kg玉米青贮、在日粮中使用1/3开花期和现蕾期苜蓿干草对奶牛消化情况的影响。【方法】试验采用单因素设计。根据泌乳天数、胎次、年龄、产奶量相近的原则,选取荷斯坦奶牛51头,随机分为3组,分别饲喂对照组(甜菜粕+玉米青贮+1/3开花期苜蓿干草)、试验1组(饲用甜菜+玉米青贮+1/3开花期苜蓿干草)、试验2组(饲用甜菜+玉米青贮+现蕾期苜蓿干草)3种粗饲料组合的日粮,每组混合精料相同。试验预饲期7 d,正式期43 d。【结果】日粮中使用饲用甜菜和现蕾期苜蓿干草饲喂奶牛可以提高有机物、粗蛋白、粗脂肪和无氮浸出物的消化情况,但差异不显著(P>0.05)。【结论】现蕾期苜蓿干草的品质优于1/3开花期苜蓿干草,饲用甜菜是一种低纤维多汁饲料,日粮中使用饲用甜菜和现蕾期苜蓿干草可以提高奶牛的消化情况。     

Establishment and early growth characteristics of six Paulownia genotypes for goat browse in Raleigh, NC, USA

Meat goat production in the eastern USA is increasing as a result of growing demand from various ethnic groups. Because goats naturally prefer a high proportion of browse in their diets, research was initiated to investigate various silvopastoral production systems. The genus Paulownia contains several species which exhibit rapid juvenile growth and other characteristics that justify research into their potential use in meat goat feeding systems. In May 1997, six Paulownia genotypes were planted in a randomized complete block experiment with six replications. Trees were between 6 and 12 cm in height at planting. Genotypes included: P. fortunei seedlings, P. tomentosa seedlings, P. elongata seedlings and three P. elongata clones. Each 4-m wide plot contained a single row of 12 trees with an intra-row spacing of 1 m. Plant measurements included height, root collar diameter (RCD) at 3 cm above soil surface, and the number of main branches. Leaf samples were collected from all six replications for estimates of herbage quality. During 1998, trees were browsed with goats on two occasions to assess palatability of the herbage and to determine any preference for specific genotypes by the animals. Compared with seedling trees of all three species, the three P. elongata clones were taller (clones: 79.7 cm, seedlings: 55.9 cm; P < 0.01), had larger RCDs (clones: 18.4 mm, seedlings: 13.9 mm; P < 0.01) and had a higher branching frequency (clones: 4.9, seedlings: 1.5; P < 0.01) by the end of the first growing season. Mortality averaged 4.8% across all treatments and ranged between 0 and 8%. Early in the 1998 growing season before trees were browsed, P. elongata clones grew more rapidly than seedlings (clones: 116.4 cm, seedlings: 84.1 cm; P < 0.01). Estimates of herbage quality indicated favorable concentrations of energy and protein for lamina. In vitro true dry matter disappearance ranged from 85.4 (blades) to 71.5% (petioles) and crude protein from 25.1 (blades) to 4.9% (petioles). Animals readily browsed the lamina during two separate sessions, but no clear preference trends were observed among the different Paulownia genotypes.This revised version was published online in November 2005 with corrections to the Cover Date.