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试验旨在研究饲料中添加氨基酸螯合铁对早期断奶仔猪血液理化指标及体内铁贮的影响,为在早期断奶仔猪饲料中应用氨基酸螯合铁提供理论依据. 相似文献
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氨基酸螯合铁对早期断奶仔猪内脏铁含量及铁消化率的影响 总被引：1，自引：0，他引：1
为了比较氨基酸螯合铁对早期断奶仔猪内脏铁含量、铁表观消化率的影响,选择150头21日龄断奶仔猪(杜×长×大),在基础日粮添加100 mg/kg无机铁的基础上分别添加0、40、80、120、160 mg/kg氨基酸螯合铁构成5个试验组进行1～3周、4～6周及全期试验.结果表明:第21天和第42天,120 mg/kg氨基酸螯合铁试验组铁表观消化率极显著高于对照组(P<0.01);肝脏铁、脾脏铁都显著高于对照组(P<0.05).添加氨基酸铁螯合铁可提高早期断奶仔猪的铁表观消化率,增加体内铁贮. 相似文献
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1产仔前后母猪补饲氨基酸螯合铁
近年来，国内外许多学者开展了有关氨基酸螯合铁预防仔猪贫血效果及相关机理的研究，期望通过给围产期和产后早期母猪补饲氨基酸螯合铁，增加出生仔猪的铁贮含量和乳中铁含量。这些研究者的试验设计其共同之处是，试验组母猪产前至产后数周饲喂一定剂量的氨基酸螯合铁，仔猪生后不注射任何铁剂； 相似文献
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饲喂母猪不同类型和水平的有机铁对仔猪生长和贫血状态的影响 总被引：2，自引：0，他引：2
本研究旨在评估母猪饲料中添加两种不同水平螯合态的有机铁对仔猪生长性能和改善仔猪贫血效果的研究。选取体重相近、胎次相近、遗传结构一致、健康的二元杂母猪30头,随机分为5组。对照组1组,在基础饲料中添加硫酸亚铁100 g/kg;处理组2、3、4、5分别在基础饲料中添加甘氨酸亚铁80 g/kg和100 g/kg、复合氨基酸螯合铁80 g/kg和100 g/kg。结果表明,母猪饲料中添加有机铁甘氨酸亚铁100 g/kg和复合氨基酸螯合铁80 g/kg可提高21日龄断奶仔猪体重,分别提高12.26%和10.3%;母猪饲料中添加有机微量甘氨酸亚铁和复合氨基酸螯合铁可改善母猪生产时和产后21日龄以及仔猪初生和断奶后体内血液红细胞数量(RBC)、血液平均红细胞的体积(MCV)和血液中红细胞压积(HCT),其中母猪日粮中添加甘氨酸亚铁80 g/kg和复合氨基酸螯合铁100 g/kg组仔猪血液红细胞数量(RBC)在初生和21日龄断奶分别提高6.06%和9.29%;母猪饲料中添加有机微量甘氨酸亚铁和复合氨基酸铁都可提高母猪初乳和常乳中乳铁的含量,其中添加甘氨酸亚铁100 g/kg和复合氨基酸螯合铁100 g/kg组初乳中铁浓度分别提高276%和346%。综上,通过提高母猪乳中有机铁含量可提高初生仔猪体内的铁储存与代谢以达到仔猪抵抗贫血风险的作用。 相似文献
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氨基酸螯合铁预混料喂猪效果试验 总被引：1，自引：0，他引：1
在现代养猪生产中 ,舍饲仔猪发生缺铁性贫血现象十分普遍。一般的解决方法是在仔猪出生 3天内肌注铁剂。这种方法操作较繁琐 ,费工费力 ,并给仔猪带来一定的应激反应。氨基酸螯合铁是新型的第三代微量元素产品 ,它具有毒性小 ,生物利用率高 ,溶解性好 ,无刺激 ,抗干扰等特点 ,被认为是一种较理想的微量元素换代产品。现代动物营养研究表明 :氨基酸螯合铁能通过胎盘和乳汁传给仔猪 ,预防缺铁性贫血。为了验证上述效果 ,设计了此次在妊娠、哺乳母猪饲粮中添加含氨基酸螯合铁预混料的饲养对比试验。1 试验材料与方法1 .1 供试材料1 .1 .1 4… 相似文献
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氨基酸螯合铁在养猪生产中的应用研究进展 总被引：1，自引：0，他引：1
铁是动物必需的一种微量元素 ,从母乳中摄入的铁不能满足仔猪的正常需要 ,若无有效补铁途径 ,仔猪极易发生贫血 ,同时也易感染其它疾病。与无机铁和简单有机铁添加剂相比 ,氨基酸螯合铁具有生物学效价高、环境污染小、安全性高等优点。本文对氨基酸螯合铁的吸收机制、生物学效价、跟其它微量元素吸收的关系及其应用效果等方面作一综述 相似文献
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<正> 生产中,我们经常会碰到母猪产仔率低,死胎以及仔猪产生疾病等情况。微量元素氨基酸螯合物可起到补充微量元素和氨基酸的双重功效。有利于提高动物的生产性能,作为饲料添加剂改善饲料应用效果,提高饲料报酬。为解决仔猪皮毛红润的富红宝、牲血宝和富红素等螯合铁在养猪生产上普遍使用。下面谈一下微量元素螯合物在养猪生产中的应用。1 仔猪对仔猪补饲微量元素氨基酸螯合物,在预防仔猪营养性贫血,提高仔猪日增重,提高仔猪免疫力及抗病力等方面取得一定的效果。仔猪发生贫血,生长缓慢,精神不振,皮毛粗乱,皮肤和黏膜苍白,头肩部略见水肿,易致黄白痢,重者引起死亡。研究表明,在母猪日粮中添加氨基酸螯合铁,使穿过胎盘进入胎儿的铁大量增加,降低了仔猪的死亡率,显著提高窝产仔数、仔绪初生重和断奶重。泌乳母猪和仔猪同时补饲氨基酸螯合铁,明显提高血清免疫球蛋白 IgG 水平,防止仔猪缺铁性贫血,促进仔猪免疫功能的改善和生长发育。2 母猪在妊娠和哺乳母猪日粮中添加蛋氨基酸螯合铁,可减少死胎,提高初生重和初生仔猪体内铁贮,改善母绪体质,提高母猪的繁殖性能和仔猪成活率。有效预防仔猪贫血。据报道,在妊娠母猪产前1个月和产后20天,在日粮中添加60毫克/千克蛋氨酸铁和仔猪料中添加100毫克/千克蛋氨酸铁,可提高仔猪断奶窝重和日增重,增强机体免疫力和抗病力。还可缩 相似文献
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氨基酸螯合铁预混料在母猪、仔猪生产中的应用 总被引：5，自引：0，他引：5
铁是畜禽必需的微量元素，是血红蛋白、肌红蛋白、细胞色素和多种氧化酶的成份。在养猪生产中，仔猪缺铁性贫血现象十分普遍。一般的解决方法是在仔猪出生３天内肌注铁剂。这种方法操作繁琐，费工费力，并给仔猪带来一定应激。氨基酸螯合铁是新型的第三代微量元素产品，具有毒性小、无刺激、生物利用率高、溶解性好、抗干扰的特点，是一种较理想的微量元素换代产品。现代动物营养学研究表明：氨基酸螯合铁能通过胎盘和乳汁传递给仔猪，从而促进仔猪生长，预防缺铁性贫血，提高初生重、断奶重，减少死胎数。为验证氨基酸螯合铁在母猪、仔猪生… 相似文献
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精氨酸又称蛋白氨基酸,传统上,精氨酸不被认为是母仔猪的必需氨基酸,但是现代品种的猪生长更快,瘦肉率更高,孕育的胎儿更多,因此,对精氨酸有更高的生理需求量。大量研究表明,日粮中添加0.5%至1%精氨酸可以改善母仔猪的生产性能和繁殖性能。文章综合论述了母仔猪精氨酸的生理代谢和营养作用。 相似文献
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本试验旨在研究包膜酸化剂和小肽螯合铁及其互作对38~44周龄蛋鸡夏季产蛋性能、蛋品质及血清生化指标的影响。采取2×4完全随机试验设计,在基础饲粮设2个包膜酸化剂添加水平(0和300 mg/kg)和4个小肽螯合铁添加水平(0、0.04%、0.08%和0.12%)。试验选用38周龄、健康的罗曼粉壳蛋鸡576只,随机分成8组,每组6个重复,每个重复12只。A、B、C和D组饲粮分别在基础饲粮中添加0 mg/kg包膜酸化剂和0(对照组)、0.04%、0.08%或0.12%小肽螯合铁(铁含量分别为0、60、120和180 mg/kg),E、F、G和H组饲粮分别在基础饲粮中添加300 mg/kg包膜酸化剂和0、0.04%、0.08%或0.12%的小肽螯合铁(铁含量分别为0、60、120和180 mg/kg)。预试期1周,正试期6周。结果表明:1)包膜酸化剂以及包膜酸化剂和小肽螯合铁互作对哈氏单位有显著影响(P0.05)。B、H组总产蛋数较对照组分别提高了4.57%、4.45%(P0.05),F组蛋壳厚度显著大于对照组(P0.05),B、H组料蛋比显著小于G组(P0.05),E、F和G组哈氏单位显著高于D组(P0.05)。2)包膜酸化剂对血清中各生化指标均无显著影响(P0.05),小肽螯合铁对血清中钙、磷、铁含量有显著影响(P0.05),包膜酸化剂和小肽螯合铁互作对血清中总胆固醇、钙、磷含量有显著影响(P0.05)。D组血清碱性磷酸酶活性显著低于对照组(P0.05),H组血清中总胆固醇含量显著低于B、C组(P0.05),并较对照组降低了15.48%(P0.05),B、F组血清中钙含量显著高于E组(P0.05),C组血清中磷含量显著高于E组(P0.05),C组血清中铁含量显著高于对照组和E、H组(P0.05)。综合考虑,在饲粮中单独添加0.04%小肽螯合铁或与300 mg/kg包膜酸化剂复合使用,均有利于提高38~44周龄蛋鸡夏季的产蛋性能,并可改善蛋品质和血清生化指标。 相似文献
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《畜牧与生物技术杂志(英文版)》2018,(4)
Background: Understanding the composition of the microbial community and its functional capacity during weaning is important for pig production as bacteria play important roles in the pig's health and growth performance. However,limited information is available regarding the composition and function of the gut microbiome of piglets in early-life.Therefore, we performed 16 S rRNA gene and whole metagenome shotgun sequencing of DNA from fecal samples from healthy piglets during weaning to measure microbiome shifts, and to identify the potential contribution of the early-life microbiota in shaping piglet health with a focus on microbial stress responses, carbohydrate and amino acid metabolism.Results: The analysis of 16 S rR NA genes and whole metagenome shotgun sequencing revealed significant compositional and functional differences between the fecal microbiome in nursing and weaned piglets. The fecal microbiome of the nursing piglets showed higher relative abundance of bacteria in the genus Bacteroides with abundant gene families related to the utilization of lactose and galactose. Prevotel a and Lactobacil us were enriched in weaned piglets with an enrichment for the gene families associated with carbohydrate and amino acid metabolism. In addition, an analysis of the functional capacity of the fecal microbiome showed higher abundances of genes associated with heat shock and oxidative stress in the metagenome of weaned piglets compared to nursing piglets.Conclusions: Overal, our data show that microbial shifts and changes in functional capacities of the piglet fecal microbiome resulted in potential reductions in the effects of stress, including dietary changes that occur during weaning.These results provide us with new insights into the piglet gut microbiome that contributes to the growth of the animal. 相似文献
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Szabo P Bilkei G 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2002,49(7):390-391
It has been claimed that outdoor-reared suckling piglets do not need iron supplementation. According to practical experience, outdoor-reared and non-iron-supplemented piglets show a lower performance in comparison with their iron-supplemented counterparts. The purpose of the present study was to determine the effect of iron supplementation on outdoor-reared suckling piglets. In a large Hungarian outdoor pig production unit, 4691 piglets were assigned to one of two treatment groups. Piglets in group 1 (n = 2344): received no iron supplementation, whereas piglets in group 2 (n = 2347) were intramuscularly injected in the neck on day 3 post-partum with 1.5 ml of Ferriphor 10% solution (TAD Pharmaceutical GmbH, Bremerhaven, Germany). Animal weights, morbidity, haemoglobin concentration and mortality were recorded and analysed. At weaning the iron-injected piglets were significantly (P < 0.05) heavier. The iron-supplemented piglets also revealed significantly (P < 0.01) less pre-weaning morbidity and mortality and higher (P < 0.01) blood haemoglobin concentration compared with the non-injected ones. This study suggests that in order to prevent pre-weaning losses and support piglet health and weight performance, iron supplementation should be administered to piglets in outdoor pig production units. 相似文献
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Gastric motility, secretion and structure were studied in piglets which were weaned at two weeks of age and reared in iron-free cages on a low-iron diet. Piglets which were not given iron parenterally rapidly developed iron deficiency anaemia. Gastric motility was studied fluoroscopically after dosing the piglets with barium sulphate. Gastric secretion was studied in piglets with gastric cannulae after stimulation with betazole hydrochloride. There was no difference between iron-treated and iron-deprived pigs in the motility of the stomach but in iron-deprived animals there was marked impairment of acid and chloride secretion from an early age and histological evidence of atrophic gastritis. 相似文献
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Comparison effects of dietary iron dextran and bacterial‐iron supplementation on growth performance,fecal microbial flora,and blood profiles in sows and their litters 
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下载免费PDF全文 This study was conducted to compare effects of dietary administration of iron dextran and bacterial‐iron on growth performance, fecal microbial flora, and blood profiles in sows and their litters. A total of 20 multiparous sows (Landrace × Yorkshire) were randomly allotted into two treatments: (i) ID (basal diet, piglets were injected with iron dextran); (ii) BR (basal diet + bacterial‐iron; bacterial‐iron was given to sows, piglets were not injected with iron dextran). There were five replicates per treatment with two sows per replicate. No differences were observed on sow and piglet growth performance, fecal microbial flora as well as sow blood profiles between ID and BR treatments. In piglets, blood iron, red blood cell and hemoglobin concentrations in ID treatment were higher (P < 0.05) on days 12 and 24. Furthermore, concentration of white blood cells in BR treatment was lower (P < 0.05) on day 12. However, the percentage of lymphocytes on day 12 was increased (P < 0.05) in BR treatment. In conclusion, effect of iron dextran and bacterial‐iron has no difference on growth performance in lactating sows and piglets, but iron dextran injection has higher blood iron, white blood cell, red blood cell and hemoglobin concentrations in piglets. 相似文献
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During the course of parturition seven high pregnant sows, crossbreds of the Large White and Landrace breeds, and their 69 piglets being born, were studied for the changes of the total and separate free amino acids in the blood plasma in relation to the time of duration of the parturition, to the sequence of piglets being born in the litter, and to the birth weight of the piglets. The concentration of the total free amino acids in blood plasma is 2.44 +/- 0.182 mmol.l-1 just before parturition; after the birth of the last piglet it decreases insignificantly to 2.17 +/- 0.190 mmol.l-1. The concentration of the total free amino acids in the blood plasma of newborn piglets is always significantly higher than in their mothers (p less than 0.001) and is 4.24 +/- 0.109 mmol.l-1. The rank of each piglet in the sequence of births in litter has no influence on the level of plasma concentration of the total free amino acids amino acidaemia was 4.03 +/- 0.268 mmol.l-1 in the piglets born first and insignificantly changed to 3.99 +/- 0.445 mmol.l-1 of blood plasma in the last piglets born in the litter. The time factor of parturition is also statistically insignificant. However, the differences in the free "amino acids" concentration in the blood plasma between the piglets with the lowest weight and the piglets with a weight of up to 1200 and 1500 g are statistically significant (p less than 0.02). Alanine (0.43 +/- 0.052 mmol.l-1) and glycine (0.43 +/- 0.063 mmol.l-1) constitute the largest proportions of all the 17 amino acids studied in the blood plasma in the high pregnant sows before parturition. The tyrosine concentration in piglets at birth is remarkably high (1.44 +/- 0.035 mmol.l-1); it represent 34 per cent of the total amino acidaemia. Tyrosine, histidine and lysine concentration in the blood plasma is statistically highly significantly higher (p less than 0.001) in newborn piglets than in their mothers. The phenomenon of 6-times higher tyrosinaemia in piglets, compared with the sows is discussed in connection with the weight at birth and with the data on the function and concentration of thyroid hormones in piglets during the first days of their lives. 相似文献