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低聚异麦芽糖是一种功能性低聚糖,被广泛地应用于食品、医药、饲料等领域,市场前景十分广阔。本文介绍了低聚异麦芽糖的性质和生理功能,阐述了低聚异麦芽糖的生产工艺,并对其在仔猪生产中的应用情况做一简述。 相似文献
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由中国农业科学院畜牧研究所，山东禹城助发动物保健品有限公司联合研制开发成功的低聚果糖，低聚麦芽糖饲料添加剂及应用开发技术成果，近日通过了国家科学技术部委托中国农业部在京组织召开的科技成果鉴定。这些项目的研制成功，不仅标志着我国在高科技绿色饲料领域中的世界领先水平，而且成本较进口同类产品低 4％至 5％。特别是在低聚果糖，低聚异麦芽糖的作用机理研究：低聚异麦芽糖，低聚果糖双歧因子替代饲料中的抗生素；低聚异麦芽糖，低聚果糖与其它添加剂、维生素配合使用，制成含低聚糖双歧因子的复合添加剂方面填补了国内外空白… 相似文献
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低聚异麦芽糖作为饲料添加剂显著优于抗生素及益生素。动物实验表明:低聚异麦芽糖可以增殖肠道中的双歧杆菌数量;降低大肠杆菌的数量;提高生产能力和抗病能力,降低饲料消耗。 相似文献
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低聚异麦芽糖作为饲料添加剂显著优于抗生素及益生素，动物实验表明：低聚异麦芽糖可以增殖肠道中的双歧杆菌数量；降低大肠杆菌的数量；提高生产能力和抗病能力，降低饲料消耗。 相似文献
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低聚异麦芽糖作为一种来源于植物的天然无公害饲料添加剂,在动物生产中具有广阔前景。本文对低聚异麦芽糖在家禽生产中对其生产性能、免疫功能、肠道微生物、产蛋四个方面的应用研究进行综述。 相似文献
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低聚异麦芽糖对蛋雏鸡生长性能和肠道菌群的影响 总被引：1，自引：1，他引：0
本试验以7日龄海兰褐蛋雏鸡为研究对象,通过饲养试验和肠道菌群培养,研究低聚异麦芽糖替代抗生素对蛋雏鸡生长性能和肠道菌群数量的影响。试验期7周。结果表明:低聚异麦芽糖组和抗生素组的生长性能均显著好于对照组,且二者之间差异不显著;低聚异麦芽糖组比对照组和抗生素组显著增加了盲肠和回肠内容物的双歧杆菌和乳酸杆菌数量,与对照组相比,降低了肠道中的大肠杆菌数量。在饲料中添加0.3%的低聚异麦芽糖在一定程度上能够替代抗生素药物,能促进蛋雏鸡生长,显著增加盲肠和回肠内容物的双歧杆菌和乳酸杆菌数量。 相似文献
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低聚异麦芽糖和低聚果糖对罗非鱼生长和非特异性免疫的影响 总被引：13，自引：0，他引：13
近年来不少研究表明 ,在畜禽日粮中添加适量低聚糖可以促进动物生长 ,提高饲料利用率 ,增强动物的免疫力 ,是一种新型绿色饲料添加剂。但低聚糖应用于水产动物的研究较少 ,本试验主要研究在日粮中添加不同水平的低聚异麦芽糖和低聚果糖对罗非鱼生长及非特异性免疫的影响 ,初步探讨低聚糖在水产动物上的应用效果。1 材料与方法1 1 试验设计 试验共设 5个处理组 ,每组 4个重复。 5个组分别为日粮添加 0 2 %低聚异麦芽糖 (IMO1组 )、0 6 %低聚异麦芽糖 (IMO2组 )、0 2%低聚果糖 (FOS1组 )、0 6 %低聚果糖 (FOS2组 )和对照组 ,各组… 相似文献
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Effect of previous locoweed (Astragalus and Oxytropis species) intoxication on conditioned taste aversions in horses and sheep 总被引：1，自引：0，他引：1
Locoweed species (Astragalus and Oxytropis spp.) are a serious toxic plant problem for grazing livestock. Horses and sheep have been conditioned to avoid eating locoweed using the aversive agent LiCl. The objective of this study was to determine if previous locoweed intoxication affects food aversion learning in horses and sheep. Horses and sheep were divided into 3 treatment groups: control (not fed locoweed and not averted to a novel feed); locoweed-novel feed averted (fed locoweed and averted to a novel feed); and averted (not fed locoweed and averted to a novel feed). Animals in the locoweed-novel feed averted groups were fed locoweed during 2 periods of 21 and 14 d, respectively, with each feeding period followed by a 14-d recovery period. Animals were averted to a novel test feed at the end of the first locoweed-feeding period, and periodically evaluated for the strength and persistence of the aversion. During the first recovery period, locoweed-novel feed averted horses ate less (9.5% of amount offered) of the test feed than did control horses (99.8%) and did not generally differ from averted horses (0%). During recovery period 2, locoweed-novel feed averted horses (4.3%) differed (P = 0.001) in consumption (% of offered) of the test feed from controls (100%) and the averted group (0%). Locoweed-novel feed averted sheep differed (P = 0.001) from controls (14.4 vs. 99.5%, respectively, during recovery period 1), whereas locoweed-novel feed averted sheep did not differ (P > 0.50) from averted sheep (0.6%). During the second recovery period, control sheep (100%) differed (P < 0.05) from averted (0%) and locoweed-novel feed averted (12.2%) groups. Two intoxicated sheep (locoweed-novel feed averted) partially extinguished the aversion during the first recovery period, but an additional dose of LiCl restored the aversion. Two of 3 intoxicated horses had strong aversions that persisted without extinction; 1 horse in the locoweed-novel feed averted group had a weaker aversion. These findings suggest that horses and sheep previously intoxicated by locoweeds can form strong and persistent aversions to a novel feed, but in some animals, those aversions may not be as strong as in animals that were never intoxicated. 相似文献
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作为玉米淀粉的副产品之一,玉米淀粉渣中蛋白质和可消化纤维含量高,具有较高的饲用价值。同时价格低廉,是奶牛的理想饲料。本文就玉米淀粉渣的饲用价值、对奶牛泌乳性能的影响、瘤胃消化代谢及瘤胃内环境的影响等方面进行了综述。 相似文献
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Background: Feeding behavior study is important for animal husbandry and production. However, few studies were conducted on the feeding behavior and their relationship with feeding efficiency in Pekin ducks. In order to investigate the feeding behavior and their relationship with feed efficiency and other economic traits in Pekin ducks, we selected 358 male Pekin ducks and recorded feeding information between 3 to 6 wk of age using automatic electronic feeders, and compared the feeding behavior under different residual feed intake(RFI) levels.Results: We observed that total feed time, daily feed intake and feed intake per meal had strong positive correlations with feed efficiency traits; moreover, strong correlation between feed intake per meal and body weight was found(R=0.32, 0.36). Daily feeding rate meal and meal duration had weak correlations with feed efficiency(R=0.14~0.15). The phenotypic correlation of between-meal pauses, with feed efficiency was not observed. When daily changes were analyzed, high RFI ducks had the highest feed consumption over all times, and obvious differences in daily visits were found among different RFI level animals during the middle period; these differences were magnified with age, but there was no difference in daily meal number. Moreover, our data indicate that high RFI birds mainly take their meals at the edge of the population enclosure, where they are more susceptible to environmental interference.Conclusions: Overal, this study suggests that the general feeding behaviors can be accurately measured using automatic electronic feeders and certain feeding behaviors in Pekin ducks are associated with improved feed efficiency. 相似文献
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Rolfe KM Snelling WM Nielsen MK Freetly HC Ferrell CL Jenkins TG 《Journal of animal science》2011,89(11):3452-3459
Growth, feed intake, and temperament indicator data, collected over 5 yr on a total of 1,141 to 1,183 mixed-breed steers, were used to estimate genetic and phenotypic parameters. All steers had a portion of Hereford, Angus, or both as well as varying percentages of Simmental, Charolais, Limousin, Gelbvieh, Red Angus, and MARC III composite. Because the steers were slaughtered on various dates each year and the animals thus varied in days on feed, BW and feed data were adjusted to a 140-d feeding period basis. Adjustment of measures of feed efficiency [G:F or residual feed intake (RFI), intake adjusted for metabolic body size, and BW gain] for body fatness recorded at slaughter had little effect on the results of analyses. Average daily gain was less heritable (0.26) than was midtest BW (MBW; 0.35). Measures of feed intake had greater estimates of heritability, with 140-d DMI at 0.40 and RFI at 0.52; the heritability estimate for G:F was 0.27. Flight speed (FS), as an indicator of temperament, had an estimated heritability of 0.34 and a repeatability of 0.63. As expected, a strong genetic (0.86) correlation was estimated between ADG and MBW; genetic correlations were less strong between DMI and ADG or MBW (0.56 and 0.71). Residual feed intake and DMI had a genetic correlation of 0.66. Indexes for phenotypic RFI and genotypically restricted RFI (no correlation with BW gain) were compared with simple economic indexes incorporating feed intake and growth to elucidate expected selection responses under different criteria. In general, few breed differences were detected across the various measurements. Heterosis contributed to greater DMI, RFI, and MBW, but it did not significantly affect ADG, G:F, or FS. Balancing output (growth) with input costs (feed) is needed in practicing selection, and FS would not be recommended as an indicator trait for selection to change feed efficiency. An index including BW gain and RFI produced the best economic outcome. 相似文献
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随着社会经济的不断发展、互联网技术的不断成熟,虚拟化、快捷化电子商务模式的出现彻底改变了局限于特定时间和空间的传统经营模式,丰富了企业的营销方式。农村地区是我国畜牧业和养殖业发展的重点区域,饲料需求较强,如何通过电子商务积极创新营销策略增加收益,事关饲料企业的发展。本文通过阐述我国农村地区饲料营销的电子商务发展现状,进而分析电子商务对我国农村地区饲料营销的有利和不利影响,以期对饲料企业未来电子商务的发展方向进行展望。 相似文献
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Kranker S Dahl J Wingstrand A 《Berliner und Münchener tier?rztliche Wochenschrift》2001,114(9-10):350-352
A strong association between the seroprevalence in sows and the occurrence of Salmonella Typhimurium among weaners has been shown. As shown several times for finisher herds, the risk-factors, ready mixed pelleted feed and health status also apply to sow herds. Risk factors on the sow level, for high seroprevalence in finishers have been quantified. It has been shown, that isolating Salmonella in weaners is a risk factor for high seroprevalence in finishers. Feed factors; ready-mixed pelleted feed for both sows and finishers, dry feed for sows, have been shown to have a significant effect on high seroprevalence, monitored by meat juice samples at slaughter. The etiological fraction of ready-mixed pelleted feed for sows and for finishers is of the same magnitude, indicating that intervention on the sow level could prove to contribute considerably to the effect of intervention programs. 相似文献
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《畜牧与生物技术杂志(英文版)》2018,(4)
Background: The feed conversion ratio(FCR) and residual feed intake(RFI) are common indexes in measuring feed efficiency for livestock. RFI is a feed intake adjusted for requirements for maintenance and production so these two traits are related. Similarly, FCR is related to feed intake and weight gain because it is their ratio. Cholecystokinin type A receptor(CCKAR) plays an important role in animal digestive process. We examined the interplay of these three parameters in a local Chinese chicken population.Results: The feed intake(FI) and body weights(BW) of 1,841 individuals were monitored on a daily basis from 56 to 105 d of age. There was a strong correlation between RFI and average daily feed intake(ADFI) and a negative correlation between the FCR and daily gain(r_g=-0.710). Furthermore, we identified 51 single nucleotide polymorphisms(SNPs) in the CCKAR and 4 of these resulted in amino acid mutations. The C334A mutation was specifically associated with FI and the expected feed intake(EFI)(P 0.01) and significantly associated with the average daily gain(ADG)(P 0.05). G1290A was significantly associated with FI and EFI(P 0.05).Conclusion: FCR is apply to weight selecting, and RFI is more appropriate if the breeding focus is feed intake. And C334A and G1290A of the CCKAR gene can be deemed as candidate markers for feed intake and weight gain. 相似文献