日粮中添加茴香和大蒜素对母猪初乳抗氧化特性及仔猪早期生长性能的影响

通过在母猪妊娠后期和哺乳前期的日粮中添加茴香或大蒜素,来研究茴香和大蒜素对母猪初乳抗氧化特性及仔猪早期生长的影响。选取健康的经产母猪36头,将母猪随机地分为3组,其中对照组母猪21头,茴香组母猪7头,大蒜组母猪8头。从母猪的妊娠后期(产前第30天)至哺乳前期(产后第7天),日粮中分别添加300 mg/kg的茴香或大蒜素。结果显示:茴香组和大蒜素组母猪初乳中的T-SOD含量显著高于对照组(P<0.05),茴香组母猪初乳中的MDA含量显著低于对照组(P<0.05)。同时,茴香组母猪所产仔猪的出生重极显著高于对照组(P<0.01),7日龄时的体重也显著高于对照组(P<0.05)。试验表明,茴香能够增强母猪初乳的抗氧化性能,改善仔猪的早期生长性能。     

Effects of alpha‐lipoic acid supplementation on growth performance,antioxidant capacity and biochemical parameters for ammonia‐exposed broilers

In order to estimate the effect of alpha‐lipoic acid (LA) supplementation on relieving ammonia stress of broilers, 180 22‐day‐old male broilers were assigned to three groups, six replicates in each group and 10 birds per replicate. The three groups were: (1) a control group without ammonia stress; (2) exposure to 70 ppm atmospheric ammonia (AM); (3) exposure to 70 ppm atmospheric ammonia and administration of 300 mg/kg LA (AM + LA). The experimental period was 3 weeks. Results showed that average daily weight gain was increased and feed conversion ratio was decreased in the AM + LA group, compared with the AM group (P < 0.05). Total superoxide dismutase and glutathione peroxidase activities in serum, and glutathione content in liver were higher in the AM + LA group than that in the AM group (P < 0.05); however, serum malondialdehyde content was decreased by LA addition (P < 0.05). Additionally, serum glutamic‐pyruvic transaminase, creatine kinase and lactate dehydrogenase activities were reduced and albumin level was increased by LA addition (P < 0.05). In conclusion, LA addition could relieve ammonia stress to restore broiler production performance to normal levels.     

日粮中添加酵母核酸对断奶仔猪生长性能的影响

为探讨日粮中添加酵母核酸对断奶仔猪生长性能的影响,试验选取体重相近,公母各半,23日龄杜×长×大健康断奶仔猪120头,按照体重和公母比例随机分为三个处理组,每个处理组4个重复,每个重复10头仔猪,进行为期23 d的饲养试验。对照组使用正常营养标准的断奶仔猪料,试验组Ⅰ在仔猪料中添加0.3%的酵母核酸提取物(雅康宝450),试验组Ⅱ在仔猪料中添加0.5%的酵母核酸提取物。试验结果表明:在断奶仔猪料中添加酵母核酸提取物可显著地提高断奶仔猪的日均采食量(P<0.05)和平均日增重(P<0.05),显著降低断奶仔猪的腹泻率(P<0.05)。     

Effects of 25‐hydroxycholecalciferol supplementation in maternal diets on milk quality and serum bone status markers of sows and bone quality of piglets

Twenty primiparous sows were allocated to two treatments to evaluate the effects of maternal 25‐hydroxycholecalciferol (25OHD₃) supplementation during gestation and lactation on milk quality and serum bone status markers of sows and bone quality of piglets. Immediately after mating, sows were randomly allotted to one of two diets supplemented with 50 µg/kg 25OHD₃ or basal diets without 25OHD₃. Blood and milk samples were obtained. At birth and weaning, 10 piglets from each treatment were killed for bone quality analysis. 25OHD₃‐fed sows provided one more piglet at farrowing and 1.17 more piglets at weaning than sows fed basal diets. The contents of solids not‐fat, protein, fat or lactose were increased in milk from days 7 and 14 of lactation in 25OHD₃‐supplemented sows and 25OHD₃ concentrations in milk were increased by dietary 25OHD₃ supplementation. Dietary 25OHD₃ supplementation increased serum alkaline phosphatase activity but had no effect on serum tartrate‐resistant acid phosphatase activity of sows. Maternal 25OHD₃ supplementation improved bone strength, density and ash content of newborn piglets rather than those of weaning piglets. In conclusion, 25OHD₃ supplementation in maternal diets improved reproductive performance, milk quality and bone status of sows as well as bone quality of newborn piglets.     

Effect of ginseng polysaccharides on the immunity and growth of piglets by dietary supplementation during late pregnancy and lactating sows

There are many reports that dietary supplementation with plant polysaccharides in pigs might promote their growth, but little is known about the maternal effect of ginseng polysaccharides (GPS) on piglets’ growth by dietary supplementation to pregnant and lactating sows. In the current study, the effects of dietary supplementation with GPS on the immunity of sows and growth of their piglets were investigated. Results showed no significant difference among the four groups in the total number of piglets, live piglets, weak piglets and birth weight of piglets, indicating the GPS‐treatment has no adverse effect on reproduction. Furthermore, the weaning weight of the GPS‐treated groups was higher than that of control group (P < 0.05); among them, the addition of 200 mg/kg dose has the best effect. Interestingly, GPS increased the total immunoglobulin G concentration in milk and serum of sows (P < 0.05). The concentrations of interleukin (IL)‐2, IL‐6, tumor necrosis factor (TNF)‐α, and interferon‐γ in milk and serum of sows were also increased in the experimental groups relative to the control (P < 0.05). Meanwhile, maternal supplementation of GPS significantly increased IL‐2 and TNF‐α concentration in the piglets’ serum of the experimental groups relative to control (P < 0.05). GPS (200 mg/kg) significantly increased the glutathione peroxidase activity in milk and serum (P < 0.05), while the concentrations of malondialdehyde were significantly reduced (P < 0.05). The present results indicated that GPS supplementation during late pregnancy and lactation improved immunity‐related bio‐molecular levels in sow serum and milk, which may be further beneficial to piglet health and growth through biological transmission effects.     

Effects of cellulase supplementation to corn soybean meal‐based diet on the performance of sows and their piglets

A total of 15 primiparous sows (Landrace × Yorkshire) and their litters were used in the current study to evaluate the efficacy of cellulase supplementation on the production performance of sows and piglets. Pigs were randomly allocated into one of three treatments with five replicates per treatment. The dietary treatments were as follows: (i) CON (corn‐soybean meal‐based control); (ii) EZ1 (CON + 0.05% cellulase); and (iii) EZ2 (CON + 0.10% cellulase). The supplementation of cellulase had no effect (P > 0.05) on body weight and feed intake of lactating sows. At weaning, back fat thickness loss decreased (P = 0.04) linearly in EZ1 and EZ2 treatments. The average daily gain (ADG) of piglets increased (linear P = 0.06, quadratic P = 0.04)) during days 14 to 21 as well as at days 21 to 25 (linear P = 0.03 and quadratic P = 0.01) with the increase in the level of supplemented enzyme. Dry matter and nitrogen digestibility increased (linear P = 0.01) in lactating sows fed EZ1 and EZ2 diet compared with CON. In conclusion, it is suggested that cellulase supplementation to corn‐soybean meal based diet exerts beneficial effects to sows in reducing their back fat thickness loss at weaning and also helps to improve nutrient digestibility. It also helped to improve the ADG of piglets.     

香菇多糖对仔猪生产性能、营养物质消化率及抗氧化能力的影响

通过在玉米-豆粕型基础日粮中添加香菇多糖,研究其对仔猪生产性能、营养物质消化率及抗氧化能力的影响。选取120头(长白×大白,体重11.34 kg左右)仔猪,随机分为4组,每组设5个重复,每个重复6头猪,试验期28 d。第Ⅰ组为对照组,饲喂基础日粮,第Ⅱ、Ⅲ、Ⅳ组分别在基础日粮中添加150 mg/kg、300 mg/kg、450 mg/kg的香菇多糖。结果显示:添加香菇多糖能够显著提高仔猪0 d~14 d、14 d~28 d及试验全期的平均日增重(ADG);试验各组的平均日采食量(ADFI)在0 d~14 d及试验全期均得到显著提高;而料重比(F/G)在各时期并没有显著降低。第Ⅱ、Ⅲ、Ⅳ组粗蛋白(CP)消化率分别相对提高了3.16%(P<0.05)、2.64%(P>0.05)、0.13%(P>0.05),第Ⅱ、Ⅲ组粗脂肪(EE)消化率分别相对提高了1.53%(P>0.05)、1.37%(P>0.05),较第Ⅳ组分别相对提高了1.80%(P>0.05)、1.65%(P>0.05)。第Ⅱ、Ⅲ、Ⅳ组血清总蛋白(TP)、白蛋白(ALB)、球蛋白(GLO)、血糖(GLU)水平较第Ⅰ组有所提高,第Ⅲ组血清尿素氮(SUN)相对降低了0.32%(P>0.05),但均未达到显著水平(P>0.05)。第Ⅱ、Ⅲ、Ⅳ组丙二醛(MDA)含量较第Ⅰ组分别相对下降了13.22%(P>0.05)、23.42%(P<0.05)、31.54%(P<0.01),超氧化物岐化酶(SOD)活力分别相对提高了4.13%(P>0.05)、13.13%(P<0.05)、24.69%(P<0.01),谷胱甘肽过氧化物酶(GSH-Px)活力分别相对提高了5.54%(P>0.05)、10.43%(P<0.05)、12.13%(P<0.05)。     

Potential effect of two Bacillus probiotic strains on performance and fecal microbiota of breeding sows and their piglets

The effect of long-term administration of two Bacillus strains was tested on 98 breeding sows and their litters allotted into three treatments: a control group (CON); supplemented with 5 × 10⁸ cfu/kg B. subtilis − 541 (BSU); or with 5 × 10⁸ cfu/kg B. amyloliquefaciens − 516 (BAM). Reproductive and performance variables were recorded over three cycles with 56 dams remaining through the third lactation. Blood and fecal samples were taken longitudinally from 12 sows per treatment on days 8 and 21 of the third lactation and milk samples were taken on day 21. Feces from one piglet per litter was sampled on days 21 and 33 and jejunal gene expression was assessed in two piglets on day 21. Changes in fecal microbiota were assessed by 16S rRNA gene sequencing (Illumina MiSeq) and gene expression by Open-Array technology. Metabolomic responses were analyzed in milk by NMR and Ig-G and Ig-A specific antibodies were determined by ELISA. No significant differences were observed on feed intake, body weight, or fat mobilization of the sows. However, a significant increase in the total number of piglets born was observed in supplemented sows. Although the increase was seen from the first cycle with BAM, improvements were not seen with BSU until the third cycle. BAM also increased the number of born-alive and weaned piglets. NMR analysis showed an impact of BAM on milk composition. No differences were found in milk or blood immunoglobulins. A different structure of the fecal microbiota was found in supplemented sows, with changes across phylum, family, and genus. These changes were greater at day 8, suggesting a relevant role of probiotics establishing a new intestinal balance after labor. Shifts in the microbiota were also seen in the piglets, with a clearer impact post-weaning than in suckling. In this regard, correlations between microbial groups of sows and piglets showed a higher link with weaned (d33) than with suckling pigs (d21), reinforcing the idea of an early maternal carry-over. No changes due to treatment in jejunal gene expression were detected; however, piglet size had a clear impact on different genes. In summary, the addition of both probiotics, and particularly Bacillus amyloliquefaciens, demonstrated potential benefits on the prolificacy of sows. Daily feeding of Bacillus amyloliquefaciens resulted in an increase in the number of weaned piglets. The high correlations between the compositions of the microbiota of sows and their piglets are evidence of maternal imprinting, with effects lasting beyond weaning.     

香味剂对高温应激条件下母猪泌乳性能的影响

试验旨在研究高温应激条件下,日粮添加香味剂对母猪泌乳和产仔性能及仔猪生长性能的影响。选择平均胎次为2.5、妊娠110 d的母猪300头,随机分为3组,每组100头猪。采用单因素试验设计,共3种日粮,处理1组饲喂玉米-豆粕型基础日粮,处理2组在基础日粮中添加250 g/kg香味剂,处理3组在基础日粮中添加500 g/kg香味剂,试验由分娩当天开始,到断奶再发情结束。各组对母猪的采食量有显著影响,其中处理3组较处理1组和处理2组显著提高了母猪采食量(P <0.05),处理2组显著高于对照组(P <0.05)。与处理2组相比,处理3组使母猪的采食量提高了9.6%(P <0.05)。处理3组较处理2组及处理2组较处理1组显著提高了断奶后仔猪头数(P <0.05)。与处理2和处理1组相比,处理3组显著提高了泌乳期间仔猪的平均日增重(P <0.05),同时也显著提高了仔猪的断奶重(P <0.05)。处理1组呼吸频率最低(P <0.05),香味剂对直肠温度也有显著影响,处理2组和处理3组直肠温度显著高于处理1组(P <0.05)。综上所述,高温应激条件下,日粮添加香味剂可以提高母猪的采食量和泌乳性能,同时采食量的提高可以促进仔猪生长性能,降低热应激对母猪的负面影响。     

Effects of temperature and temperature‐humidity index on the reproductive performance of sows during summer months under a temperate climate

Heat stress is known to influence sow reproduction, but it is unknown to which extent under temperate climates. Therefore, the impact of temperature and temperature‐humidity index (THI) on the reproductive performance of sows during summer months from 2009 to 2011 were studied. Reproductive parameters of 22 264 inseminations and 21 610 resulting farrowings of 22 German commercial farms were analyzed. Climatic records were available from the nearest weather station. Effects of temperature and THI at different periods of the reproductive cycle were estimated from May to September where temperatures were expected to influence climatic conditions indoors. High temperatures and THI values 5 days pre‐ and 14 days post‐breeding reduced litter size by 0.01 to 0.03 piglets (P < 0.05). Prior to farrowing, the number of liveborn piglets was reduced (P < 0.05) and of stillborns increased with rising climatic variables (P < 0.001). On the day of farrowing, reduced numbers of weaned piglets were observed when temperature and THI values were elevated (P < 0.05), but pre‐weaning mortality was not influenced (P > 0.05). In conclusion, even under temperate conditions adverse effects of climatic variables on the reproductive performance of sows are present. Thereby, the number of liveborn piglets can be considered as the most sensitive parameter to heat stress. Considering the impact of climate change and predicted heat waves, strategies to mitigate the impact of heat stress are necessary.     

Effects of 25(OH)D3 supplementation during late gestation on the serum biochemistry and reproductive performance of aged sows and newborn piglets

The purpose of this study was to investigate the effects of diet type (normal or low Ca and P diets) and 25(OH)D₃ supplementation (with or with not 2000 IU/kg 25(OH)D₃) during late gestation on the serum biochemistry and reproductive performance of aged sows and newborn piglets. A total of 40 sows, which are at their 7th parity, were divided into four groups: control group (standard diet), low Ca group, 25(OH)D₃ group and low Ca plus 25(OH)D₃ group respectively (10 in each group). The blood of sows on day 100 and 114 of gestation and newborn piglets was collected for serum biochemical analyses. Results showed that the reproductive performance of sows was not influenced by diet type or 25(OH)D₃ supplementation (p > 0.05). And the addition of 25(OH)D₃ to diet low Ca group caused that the content of serum TG in sows on day 100 of gestation was not different from that of the control group (p > 0.05). The addition of 25(OH)D₃ significantly decreases the content of serum TG in sows on day 114 of gestation (p < 0.05). The addition of 25(OH)D₃ significantly increased the content of serum UREA and CREA in newborn piglets (p < 0.05). Overall, feeding 2000 IU/kg 25(OH)D₃ to aged sows at late gestation had no effects on reproductive performance, but partly contributed to keeping serum TG balance in sows and may indicate increased pressure on kidneys in newborn piglets.     

纤维原料对母猪繁殖性能和粪便的影响

为研究妊娠后期及哺乳期母猪饲粮中添加纤维产品对母猪生产性能和粪便的影响,试验选取48头分娩日期相近的3~6胎妊娠后期母猪(长×大),按胎次、体重、膘情随机分成2组,每组24个重复。对照组饲喂基础日粮,试验组在基础日粮中添加1%的纤维产品。试验期为母猪产前30d到断奶后发情。结果表明:本次试验未观测到添加1%纤维产品组母猪哺乳期采食量和平均窝产活仔数有提高的趋势,但平均断奶重和日增重有提高,其中断奶重提高5%,日增重提高4.74%。添加纤维产品可有效降低便秘程度,其中在分娩至断奶,断奶到发情阶段达到极显著水平(P<0.01),便秘评分分别提高7.75%和28.81%。另外添加纤维还可缩短产程,减少母猪产后缺乳、发热和难产的发生率,均降低4.17%。由此可见,母猪产前30d到哺乳期饲粮中添加1%的纤维产品,能够有效改善母猪便秘,缓解母猪无乳综合征症状。     

凝结芽孢杆菌制剂对仔猪生长性能的影响

凝结芽孢杆菌除具有一般乳酸菌的维持肠道微生态平衡,刺激免疫,促进动物消化等益生作用外,还具有耐高温、耐酸和耐胆盐等高抗逆性,且具有较强的抑制肠道致病菌能力。选择21日龄仔猪,体重在6 kg左右90头,公母各半,分成三个组,分别为对照组（饲喂教槽料）,试验组1组（饲喂添加0.1%凝结芽孢杆菌制剂）、试验2组（饲喂添加0.2%凝结芽孢杆菌制剂）,每组30头,每组3个重复,试验期为10 d。试验结果表明：试验期间仔猪的毛色状态和精神状态指标较对照组均有所改善,试验组2平均日增重与试验组1和对照组相比差异显著（P＜0.05）,腹泻率和死亡率也有所下降,在添加量为0.2%凝结芽孢杆菌的日粮中效果优于添加量为0.1%的日粮。     

Effects of beet pulp supplementation on growth performance,fecal moisture,serum hormones and litter performance in lactating sows

This study was conducted to evaluate effects of beet pulp supplementation on growth performance, fecal moisture, serum hormones and litter performance in lactating sows. Ninety primiparous sows (Landrace × Yorkshire) were randomly allotted to one of three dietary treatments in a 21‐day trial starting 3 days before parturition. The three dietary treatments were supplemented with 0, 10 and 20% beet pulp, respectively. Backfat loss and fecal moisture content were increased (P < 0.05), where cortisol and norepinephrine levels were decreased (P < 0.05) in sows fed beet pulp supplementation diets compared with control diet, but there was no difference between 10% and 20% beet pulp supplementation treatments. No effect was observed on bodyweight, average daily intake, weaning to estrus interval, epinephrine level in sows and litter weight, litter size, survivability in piglets among dietary treatments. Taken together, beet pulp supplementation has no significant effect of growth performance of lactating sows and piglets with decreased cortisol and norepinephrine levels in lactating sows, but it can increase fecal moisture content which is beneficial for sow feces excretion.     

牛磺酸对肉仔鸡免疫功能和抗氧化能力的影响

试验选用1日龄艾维茵肉鸡360羽,采用单因子随机设计,分成4组,每组5个重复,空白对照组饲喂基础日粮,试验1组、试验2组和试验3组分别在基础日粮上添加0.05%、0.10%和0.15%牛磺酸。试验期42d,探讨牛磺酸对肉仔鸡免疫机能和抗氧化能力的影响。结果表明,与对照组相比,3周龄时试验各组脾脏指数和胸腺指数显著提高(P<0.05),6周龄时试验2组和试验3组IgA和IgG的含量显著提高(P<0.05),3周龄时试验2组的血清SOD和肝脏SOD活性均显著提高(P<0.05),血清MDA和肝脏MDA含量均显著降低(P<0.05)。结论,添加牛磺酸能提高肉鸡的免疫机能和机体抗氧化能力,且0.1%的牛磺酸添加效果最好。     

饲料中添加发酵豆粕对仔猪生长性能的影响

试验选择母猪胎次、初生体重相近的杜长大三元杂交哺乳仔猪24窝,随机分为对照组,试验Ⅰ、Ⅱ组,每组八窝。对照组饲喂常规乳猪料,试验Ⅰ、Ⅱ组分别饲喂添加10%、20%发酵豆粕的乳猪料,研究发酵豆粕对仔猪生长性能的影响。结果表明试验Ⅰ、Ⅱ组仔猪平均日增重、平均日采食量均显著高于对照组(P<0.05),而料肉比、腹泻率显著低于对照组(P<0.05);试验组Ⅱ平均日增重、平均日采食量高于试验组Ⅰ,料肉比、腹泻率低于试验组Ⅰ,但二者之间差异不显著(P>0.05)。     

补铬对断奶仔猪代谢、免疫功能和生产性能的影响

选择(32±2)日龄、平均体重为(8.24±0.85)kg的三元杂交(杜×长×大)仔猪108头,随机分为3个处理,分别饲喂基础日粮、基础日粮添加甲基吡啶铬(C r3+含量200μg/kg)和基础日粮添加酵母铬(C r3+含量200μg/kg)3种日粮。试验持续4周,猪只自由采食和饮水。结果表明,日粮补铬对仔猪血浆铬、尿素氮、葡萄糖、甘油三酯、总蛋白、球蛋白、白蛋白等含量无显著影响(P>0.05);对卵清蛋白抗体效价、猪瘟(SFV)抗体效价以及经植物凝集素(PHA)刺激后皮褶厚度(DST)的变化无显著影响(P>0.05);对仔猪平均日增重(ADG)、平均日采食量(ADFI)和饲料转化效率(FCR)也均无显著影响(P>0.05)。结果提示,尚不能确定在生产实践中添加铬对仔猪免疫和生产性能的促进作用。     

低聚寡糖对仔猪生产性能的影响

通过在基础日粮中分别添加 2种不同寡聚糖和抗生素比较其对仔猪的生长性能、腹泻率及料重比的影响。选用 9窝 72头平均日龄为 41d的长白×皮特兰×枫泾三元杂交断奶仔猪进行试验。试验分 3组 ,每组 2个重复。对照组 (Ⅰ )为抗生素组 ,试验组Ⅱ为甘露寡糖组 ,试验组Ⅲ为低聚果糖组。 2 8d的饲养试验表明 :Ⅱ、Ⅲ组在试验 1～ 4周全程体增重分别为 (6 2 5± 1 81 )kg和 (6 0 3± 2 59)kg ,日增重分别为 (2 2 3 0 7±64 54)g和 (2 1 5 33± 1 0 0 91 )g,均显著高于Ⅰ组体增重 (5 36± 2 0 6)kg和日增重 (1 91 37± 73 55)g(P <0 0 5) ;Ⅰ组的腹泻率为 (4 90±4 48) % ,低于Ⅱ组 (5 64± 4 40 ) %和Ⅲ组 (6 37± 5 33) % ,Ⅲ组腹泻较严重 ,但各组间差异不显著 (P >0 0 5) ;1～ 4周试验全程Ⅱ组和Ⅲ组的料重比分别为 (2 0 0± 0 2 5)和 (2 0 9± 0 0 8) ,均显著低于Ⅰ组 (2 41± 0 1 3) (P <0 0 5)。结果表明 :Ⅱ、Ⅲ组低聚寡糖的使用效果明显优于Ⅰ组抗生素。寡聚糖在一定程度上可替代抗生素 ,且不同低聚寡糖的饲喂效果存在差异。     

复合有机铁对母猪繁殖性能及其抗氧化能力的影响

为研究复合有机铁对母猪繁殖性能、血液理化指标及抗氧化能力的影响,试验选用体重接近、胎次接近、预产期一致的健康“长×白”二元杂母猪30头,随机分为3组,每组10个重复,每个重复1头母猪,3个处理组分别在基础日粮中补充硫酸亚铁、甘氨酸亚铁、复合有机铁。结果显示:较硫酸亚铁组,复合有机铁组产程缩短23.57%、胎产健仔数增加14.00%、初生窝重增加14.14%(P < 0.05);母猪血红蛋白含量、红细胞数和红细胞压积分别提高19.88%、10.53%、8.33%(P < 0.05);母猪抗氧化酶活性和机体抗氧化能力提高47.33%(P < 0.05),丙二醛含量降低37.05%(P < 0.05)。综上所述,母猪日粮中额外补充复合有机铁源能提高母猪繁殖性能,改善血液理化指标,增强母猪抗氧化能力。     

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

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。