|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 早期断奶仔猪营养需要显示文摘仔猪断奶会造成消化紊乱、腹泻以及食欲减退。研究仔猪断奶阶段的独特营养需要目的就在于尽量减缓断奶应激。仔猪断奶效果如何直接影响其将来的生产性能。本文就早期断奶仔猪营养需要研究进展进行综述。 | P.A.Thacker | 1999 | 养猪1999，，4： | 9 |
| 2 | 活动尼龙袋技术测定猪饲料养分消化率研究进展显示文摘活动尼龙袋技术被认为是一种有希望的测定猪饲料养分消化率的新方法 ,具有速度快、花费少、所需待测样品小等特点。自1983年Sauer建立该技术以来 ,得到了较快的发展。本文着重综述活动尼龙袋技术测定猪饲料养分消化率 ,包括能量和粗蛋白质表观消化率。 | 谯仕彦 李德发 P.A.Thacker | 2002 | 动物营养学报2002，14，4： | 2 |
| 3 | 通过良好的配种管理多产仔猪显示文摘有许多方法来改善母猪的繁殖性能。一个没有受到人们重视的是配种的管理。虽然发情期是整个繁殖期中一个很小部分,但此时适宜管理的作用却是很重要的。 如何重视配种管理,重要的是不可忽视公猪的作用。应记住,若公猪的性能不能充分发挥作用,那么整个猪群将会出现母猪繁殖能力迅速下降。公猪的正确管理应在幼龄时开始,此时错误的管理可影响公猪终生的性能。猪是群居的动物,因此,单独饲养和分离舍饲公猪都是错误的。粗劣的舍饲可导致公猪性欲降低或性情凶狠等行为缺陷,由此可造成潜在的优良公猪被淘汰。 | P.A.Thacker R.N.Kirkwood 杨龙骐 | 1990 | 郑州牧业工程高等专科学校学报1990，0，2： | 1 |
| 4 | 活动尼龙袋技术测定猪饲料养分消化率的方法学改进显示文摘对Sauer(1983)提出的活动尼龙袋技术(MNBT)进行了两点主要改进 :①在猪肛门周围安装集粪袋 ;②不必打开尼龙袋 ,直接测定袋中剩余物的化学成分。用改进的MNBT和指示剂法比较测定了4类19种猪饲料的干物质(DM)、能量(GE)和蛋白质(CP)表观消化率。结果表明 :改进的MNBT对饲料DM、GE和CP表观消化率估测值(Y)与传统法测值(X)的线性回归方程分别为 :YDM=0.765 +0.98XDM ;YGE =5.358 +0.943XGE;YCP= -6.389 +1.111XCP,回归系数分别为0.93、0.94和0.76。改进的MNBT是估测样品量少的饲料DM和GE表观消化率的很有潜力的方法 ,也能准确地估测蛋白质补充料和谷物饲料的CP表观消化率 。 | 谯仕彦 李德发 P.A.Thacker | 2002 | 动物营养学报2002，14，1： | 1 |
| 5 | 促进猪生长的新探讨(二)显示文摘前生命期物(Probiotics) 前生命期物现巳广泛用以替代日粮中所使用的抗菌素物质。前生命期物在动物消化道内对微生物有着与抗菌素相反的作用。抗菌素在动物消化道内通过抑制和破坏细菌来控制微生物群体,用前生命期物实际是引入活的细菌于肠道内。 | P.A.THACKER 李耀南 | 1990 | 畜牧兽医科技1990，，3： | 0 |
| 6 | The Effects of Mustard Protein Concentrate on Nutrient Digestibility and Performance of Broiler Chickens显示文摘This experiment was conducted to determine the effects of feeding mustard protein concentrate on nutrient digestibility and the performance of broiler chickens.A total of 180,day-old,male broiler chickens,weighing an average of 52.8 ± 0.6 g,were randomly assigned to one of six dietary treatments in a randomized block design.The control diet was based on wheat and soybean meal and contained 15% canola meal.The experimental diets contained 3%,6%,9%,12% or 15% mustard protein concentrate added at the expense of canola meal.The digestibility of crude protein and energy declined linearly(P<0.01)with increasing levels of mustard protein concentrate.In addition,weight gain and feed intake were linearly(P<0.01)reduced as the level of mustard protein concentrate in the diet increased.Feed conversion was also negatively affected(P<0.01)by mustard protein concentrate while mortality did not differ among treatments.The results of the present experiment provide a strong indication that there is a factor or factors present in mustard protein concentrate which negatively affects broiler performance.The process through which the protein in mustard seed is concentrated from mustard meal may concentrate some of the anti-nutritional factors found in mustard.Previous research has reported an increase in the concentration of phenolic compounds in protein isolates from mustard and this may be the cause of the reduction in performance as the level of mustard protein concentrate in the diet increased.Further research should be conducted to test this hypothesis. | P.A.Thacker D.Petri | 2010 | Journal of Animal Science and Biotechnology2010，1，2： | 0 |
| 7 | Effect of Graded Levels of Wheat Distillers Grains with Solubles on Nutrient Digestibility,Performance and Carcass Traits of Growing-Finishing Pigs Fed Diets Based on Wheat and Field Peas显示文摘This trial was conducted to determine the effects of graded levels of wheat distillers dried grains with solubles(DDGS) on nutrient digestibility,performance and carcass characteristics of pigs(21.8 to 112.3 kg) fed diets based on wheat and field peas.Forty crossbred pigs were assigned on the basis of sex and weight to one of five dietary treatments in a 5×2(treatment×sex) factorial arrangement.The experimental diets were based on wheat and field peas and were formulated to contain 0,4.86%,9.71%,14.57% or 19.42% wheat DDGS during the growing period and 0,4.01%,8.05%,12.10% and 16.14% wheat DDGS during the finishing period.At the highest levels,wheat DDGS supplied 100% of the supplementary protein.The digestibility coefficient for gross energy showed a tendency towards a linear decline(P<0.08) as the level of wheat DDGS in the diet increased while digestibility coefficients for dry matter and crude protein were unaffected(P>0.05) by inclusion level of wheat DDGS.During the growing period(21.8 to 60.8 kg),weight gain of pigs fed wheat DDGS declined(P<0.01) linearly.The impairment in growth appeared to be associated with a decrease in feed intake which also declined linearly(P<0.01) with increasing inclusion level of wheat DDGS.Feed conversion was unaffected by level of wheat DDGS.During the finishing period(60.8 to 112.3 kg),and over the entire experimental period(21.8 to 112.3 kg),weight gain and feed conversion declined linearly as the dietary inclusion level of wheat DDGS increased.Carcass traits were generally unaffected by the inclusion of wheat DDGS with the exception of a trend towards a linear(P=0.10) reduction in lean yield and a linear increase(P=0.09) in loin fat as the level of wheat DDGS in the diet increased.Overall,these results suggest that wheat DDGS are inferior to field peas as a supplementary protein source for use in swine rations. | P.A.Thacker | 2011 | Journal of Animal Science and Biotechnology2011，2，4： | 0 |
| 8 | Effects of Source of Inorganic Phosphorus and Phytase Supplementation on Performance,Physiological Parameters and Bone Mineralization in Broilers显示文摘The objective of this study was to evaluate the effects of inorganic phosphorus source and phytase addition on performance,nutrient digestibility and bone mineralization in broiler chickens.In Exp.1,150 two-day old,male broiler chicks were fed a corn-soybean meal basal diet supplemented with phosphorus provided by dicalcium phosphate,tricalcium phosphate or defluorinated rock phosphate.Five cages containing 10 birds were allotted to each of the three treatments.In Exp.2,120 three-day old,male broiler chicks were fed the basal diet from Exp.1 supplemented with 0,250,500,or 1,000 FTU phytase per kg of diet.Six cages containing five chicks were allotted to each of the four treatments.In Exp.1,there was no difference in weight gain,feed intake or feed conversion as a result of feeding the different sources of inorganic phosphorus.The digestibility of phosphorus was significantly lower (P=0.01) for chicks fed diets supplemented with tricalcium phosphate than for chicks fed the other two diets.However,despite the lower digestibility,serum phosphorus levels did not differ among the three treatments.For Exp.2,feed conversion showed a linear improvement (P=0.03) with increasing levels of phytase inclusion (days 0 to 33).Phytase supplementation resulted in linear increases in the digestibility of dry matter (P=0.02),crude protein (P=0.04) and energy (P<0.01).Chicks fed 1,000 FTU/kg phytase had significantly higher bone calcium (P=0.05) and bone breaking strength (P=0.04) than chicks fed the basal diet on day 33.In conclusion,the results of the current study indicated that the performance of birds fed diets supplemented with dicalcium phosphate,tricalcium phosphate or defluorinated phosphate was similar and therefore production costs could be lowered by choosing the cheapest inorganic phosphorus source when formulating diets for poultry.When diets were formulated to meet dietary phosphorus requirements,the growth of broilers was not enhanced with phytase supplementation.However,increases in feed conversion and bone breaking strength and its potential to impact culling and mortality in broiler operations may be sufficient justification for the routine inclusion of phytase in diets fed to broilers. | W.I.Lee P.A.Thacker Y.K.Han | 2010 | Journal of Animal Science and Biotechnology2010，1，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员