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。     

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。     

Evaluation of high nutrient diets and additional dextrose on reproductive performance and litter performance of heat‐stressed lactating sows

This study investigated the litter performance of lactating sows fed nutrient‐dense diets with or without dextrose at farrowing to weaning, during the summer with an average room temperature of 28.4°C. A total of 60 (13 first parity, 13 second parity, 19 third parity, and 15 forth parity) cross‐bred sows were assigned to three treatments. The three treatments were: standard diet (ST), high nutrient diet (HN; ST + 3% higher energy and 18.0% protein), and high nutrient diet plus dextrose (HND; 3% higher energy, 18.0% protein, and 5% dextrose). BW loss was reduced in the HND sows compared with the ST sows during lactation. The HN and HND sows had a higher piglet and litter weight at weaning. Also, the HND sows had the highest post‐prandial insulin levels at weaning and the shortest weaning‐to‐service interval (WSI). Serum LH was higher in the HND sows than the ST sows. The milk fat level was higher in the HND sows compared with the ST sows, but similar to the HN sows. In conclusion, these results suggest that it is possible to increase the blood insulin response by supplementing dextrose to a high nutrient diet, thus, improving WSI interval and litter growth during heat stress.     

饲粮阴离子配比对母猪生殖机能与血清生化指标的影响

选取胎次相近、体况相似、健康状况良好的长×大二元杂交空怀母猪100头,将其均分成5组,每组20头。第1、2、3、4、5组母猪被分别喂以D1、D2、D3、D4、D5试验饲粮。在饲养试验期间,测定母猪窝产仔数,仔猪初生重、成活率、断奶重,母猪产后发情间隔天数（空怀天数）、返情率等繁殖指标;并分别于母猪采食试验饲粮后5d、孕后30d、产仔后7d,每组取8头母猪前腔静脉采血,测定血清中Cl-、Na＋、HCO3-、FSH、LH、Pg含量,GPT、GOT活性等生化参数。根据各项指标测定的结果可推断：第3组母猪饲粮中阴离子的配比（即添加：NaCl 0．40％、NaHC3。0．40％）最宜;其次是第4组母猪饲粮中阴离子的配比（即添加：NaCl0．40％、NaHCO。0．80％）较宜;再次是第2组母猪饲粮中阴离子的配比（即添加：NaCl0．40％、NaHCO30．80％）。第1、5组母猪饲粮中阴离子的配比似乎不够理想,即母猪饲粮中添加的NaCl过少（0．20％）或过多（0．80％）。     

皖南花母猪血清Tf多态性及其与繁殖性能的关系

采用垂直板聚丙烯酰胺凝胶电泳法对 115头皖南花母猪血清转铁蛋白 (Tf)多态性进行检测 ,并用二因素有互作的最小二乘模型对不同Tf基因型与母猪繁殖力的关系进行分析。结果表明 ,皖南花母猪Tf位点受 3个等位基因控制 (TfA、TfB 和TfC) ,Tf位点基因的遗传多样性指数为0 390 7,Shannon信息指数为 0 9985。不同转铁蛋白类型的皖南花母猪繁殖性能存在一定差异 ,其中TfAA个体的产仔数、产活仔数和断奶仔猪数较高 ,TfBC型个体相应指标较差 ,二者在窝产仔数上差异达到显著水平 (P <0 0 5)。但其他Tf型母猪产仔性状的最小二乘均数差异均不显著 (P >0 0 5)。同时 ,Tf型与分娩季节之间有较强的互作效应。     

日粮n-3多不饱和脂肪酸对母猪繁殖性能的影响

n-3多不饱和脂肪酸作为一种重要的营养物质,能影响家畜繁殖性能。本文主要从n-3多不饱和脂肪酸作用机理、使用效果等方面阐述n-3多不饱和脂肪酸对母猪繁殖性能的影响。     

泌乳期母猪的饲喂频率对其体况、生产和繁殖性能的影响

文章评估了哺乳期间母猪的饲喂频率(2或3次/d)对母猪体况、繁殖性能及仔猪生长性能的影响。试验选择68头母猪,随机分为8组(每组8~10头母猪),哺乳期间其中4组母猪每天饲喂2次,另外4组每天饲喂3次,母猪分为青年母猪(<2胎次)和老龄母猪(≥3胎次),试验结束后记录母猪体况评分、肩部组织病变、发情率、母猪生产及仔猪生长性能。结果显示:每天饲喂3次的母猪比饲喂2次的母猪采食量高(P<0.05),肩部组织病变低(P<0.05)。在每天饲喂3次的母猪中,青年母猪返情率为0%,老龄母猪返情率为29%,而在每天饲喂2次的母猪中,青年母猪发情率为20%,老龄母猪为5%。综上所述,在哺乳期,母猪每天饲喂3次较每天饲喂2次提高了采食量,对母猪体况评分和肩部组织病变有改善作用,同时也降低了年轻母猪的返情率。     

Supplementing daidzein in diets improves the reproductive performance,endocrine hormones and antioxidant capacity of multiparous sows

Certain hormones play important roles in modulating mammalian reproductive behaviour. Daidzein is a well-known isoflavonic phytoestrogen that possesses oestrogenic activity. This study was conducted to probe the effects of daidzein supplementation in gestation diets on the reproductive performance in sows. A total of 120 multiparous sows (Landrace × Yorkshire) were randomly assigned to 2 groups (n = 60) and fed either a base diet (control) or one containing 200 mg/kg daidzein during gestation. We discovered that daidzein supplementation significantly increased the total number of piglets born per litter and number of piglets born alive per litter (P < 0.05), decreased the farrowing time (P < 0.05) and increased the serum oestrogen and progesterone concentrations (P < 0.05) at 35 d of gestation. Moreover, serum immunoglobulin G (IgG) concentration and superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were higher in the daidzein-treated group than in the control group at 35 d of gestation (P < 0.05). Daidzein increased the serum SOD activity and total anti-oxidative capacity (T-AOC) at 85 d of gestation (P < 0.05). Interestingly, daidzein elevated the expression levels of the sodium-coupled neutral amino acid transporter 1 (SLC38A1) and insulin-like growth factor 1 (IGF-1) genes in the placenta (P < 0.05). These results suggest that daidzein ingestion could improve sow reproductive performance by changing serum hormones, elevating anti-oxidative capacity and up-regulating critical functional genes in the placenta.     

ORIGINAL ARTICLE: Effects of dietary glucose inclusion on reproductive performance,milk compositions and blood profiles in lactating sows

Twenty‐four multiparous sows were used to investigate the effects of dietary glucose inclusion on reproductive performance, milk compositions, blood metabolites and hormones during lactation. The sows were randomly assigned to four treatments and each treatment had six replicates (sows). The diets were added with 0%, 1%, 3% or 5% glucose at the expense of corn and fed to sows for 24 days. The loss of backfat thickness during lactation was quadratically decreased (p = 0.008) and the wean‐to‐oestrus interval was shortened (linear, p = 0.013; quadratic, p = 0.009) with increasing levels of dietary glucose supplementation. The reproductive performance was not affected (p > 0.05) by different dietary glucose contents. Increased concentrations of total solid and fat in milk were noted (p < 0.05), whereas there was no difference on colostrum compositions. With increasing levels of dietary glucose inclusion, the concentrations of blood urea nitrogen (p = 0.004) and glucose (p = 0.029) were linearly increased at weaning. The concentrations of insulin were increased at post‐farrowing (linear, p = 0.027; quadratic p = 0.013) and weaning (linear, p = 0.029; quadratic, p = 0.017), respectively. Furthermore, the pulses of insulin and FSH at weaning were linearly (p = 0.049) and quadratically (p = 0.015) increased with the increasing levels of dietary glucose inclusion. In conclusion, this study indicated that inclusion of 3% glucose in lactating diet could reduce backfat loss, increase milk fat and have no negative effect on reproductive performance in multiparous sows.     

饲养管理、环境及体况对妊娠母猪繁殖性能影响的研究进展

在母猪饲养过程中,通过考虑到个体差异可以降低饲料成本,从而提高动物生产效率.因此,对母猪进行精准饲喂可以提供有关动物生产性能和生活条件的实时信息,这些信息应被集成到需求估计中.到目前为止,只有体重和背膘厚度的生产数据被集成到个体营养需求计算中.但文献报道,健康状况和行为(如身体活动、社会行为和在围栏中的位置)会强烈影响...     

Effects of phyto‐oestrogen quercetin on productive performance,hormones, reproductive organs and apoptotic genes in laying hens

Quercetin, a polyphenolic flavonoid with diverse biological activities including anti‐inflammatory and antiviral, inhibits lipid peroxidation, prevents oxidative injury and cell death. The purpose of the research was to investigate the effect of quercetin on productive performance, reproductive organs, hormones and apoptotic genes in laying hens between 37 and 45 weeks of age, because of the structure and oestrogenic activities similar to 17β‐oestradiol. The trial was conducted using 240 Hessian laying hens (37 weeks old), housed in wire cages with two hens in each cage. These hens were randomly allotted to four treatments with six replicates, 10 hens in each replicate and fed with diets containing quercetin as 0, 0.2, 0.4 and 0.6 g/kg feed for 8 weeks. The results showed that dietary quercetin significantly increased (p < .05) the laying rate and was higher in group supplemented with 0.4 g/kg, and feed‐egg ratio was decreased (p < .05) by quercetin. Dietary quercetin has no effect (p > .05) on average egg weight and average daily feed intake. Compared with control, secretion of hormones, oestradiol (E₂)_, progesterone (P4), follicle‐stimulating hormone (FSH), luteinizing hormone (LH), insulin‐like growth factors‐1 (IGF‐1) and growth hormone (GH), was found to be significantly higher (p < .05) in quercetin‐supplemented groups. Also ovary index, uterus index and oviduct index were not significantly influenced (p > .05) by quercetin, whereas magnum index, isthmus index, magnum length, isthmus length and follicle numbers were significantly increased (p < .05) with quercetin supplementation. Additionally, expression of apoptotic genes was significantly (p < .05) up‐regulated or down‐regulated by quercetin. These results indicated that quercetin improved productive performance, and its mechanism may be due to the oestrogen‐like activities of quercetin.     

Season-dependent effect of daily frequency of feed distribution on the rate of feed consumption and reproductive performance in sows during lactation

The effects of the daily frequency of feed distribution (once, One; twice, Two; and four times, Four,) on the rate of feed consumption (RFC) and reproductive performance were investigated in Large White sows farrowing in the hot season from June to September (H sows) and in the rest of the year (R sows). The RFC was greater in feeding treatment Four than Two (P < 0.01) in H sows; however, bodyweight loss during lactation was not affected by the feeding treatment. No difference in effects of frequency of feed distribution for sows was observed on piglet growth. The survival rate of the piglets was not different between feeding treatments. The number of sows that came into estrus within 7 days post‐weaning was smaller in the feeding treatment Four than One (P < 0.05) in H sows and those of Four than One (P < 0.01) and Two (P < 0.05) in R sows. These results suggest that in sows during lactation increasing the daily frequency of feed distribution may have a negative effect on reproductive performance.     

Effects of different n‐6 to n‐3 polyunsaturated fatty acids ratio on reproductive performance,fecal microbiota and nutrient digestibility of gestation‐lactating sows and suckling piglets

This study was conducted to evaluate the effects of dietary ratios of n‐6:n‐3 polyunsaturated fatty acids (PUFA) on reproductive performance, fecal microbiota and nutrient digestibility of gestation‐lactating sows and suckling piglets. Fifteen primiparous sows (Landrace × Yorkshire) were randomly allotted into three treatments. Fed diets contained different ratios of n‐6:n‐3 PUFA, including 20:1, 15:1 and 10:1. No differences were detected among the treatments for average daily feed intake (ADFI) of sows and the back fat levels during lactation (P > 0.05). Body weight (BW) loss of sows after farrowing to weanling was greater in the 10:1 treatment compared with 15:1 or 20:1 (P < 0.05). In piglets, a great significant difference for BW was observed at 4 weeks (P < 0.01). Furthermore, average daily gain (ADG) of piglets in the 10:1 treatment was higher (P < 0.05). No difference was observed among treatments in nutrient digestibility of sows (P > 0.05). A great significant difference for fecal microbiota was in the 10:1 treatment compared with 20:1 and 15:1 treatments (P < 0.01). In conclusion, altering the ratio of n‐6:n‐3 PUFA in gestation‐lactating sow diet had no difference on nutrient digestibility in gestation‐lactating sows, but it can partially improve reproductive performance.     

Feeding of different levels of metabolite combinations produced by Lactobacillus plantarum on growth performance,fecal microflora,volatile fatty acids and villi height in broilers

The effects of feeding different dosages of metabolite combination of L. plantarum RS5, RI11, RG14 and RG11 strains (Com3456) on the performance of broiler chickens was studied. A total of 504 male Ross broilers were grouped into 7 treatments and offered different diets: (i) standard corn‐soybean based diet (negative control); (ii) standard corn‐soybean based diet +100 ppm neomycin and oxytetracycline (positive control); (iii) standard corn‐soybean based diet + 0.1% metabolite combination of L. plantarum RS5, RI11, RG14 and RG11 strains (Com3456); (iv) standard corn‐soybean based diet + 0.2% of Com3456; (v) standard corn‐soybean based diet + 0.3% of Com3456 (vi) standard corn‐soybean based diet + 0.4% of Com3456 and (vii) standard corn‐soybean based diet + 0.5% of Com3456. Supplementation of Com3456 with different dosages improved growth performance, reduced Enterobacteriaceae and increased lactic acid bacteria count, and increased villi height of small intestine and fecal volatile fatty acid concentration. Treatment with 0.4% and 0.2% Com3456 had the best results, especially in terms of growth performance, feed conversion ratio and villi height among other dosages. However, the dosage of 0.2% was recommended due to its lower concentration yielding a similar effect as 0.4% supplementation. These results indicate that 0.2% is an optimum level to be included in the diets of broiler in order to replace antibiotic growth promoters.     

Modulation of post‐partum reproductive performance in dairy cows through supplementation of long‐ or short‐chain fatty acids during transition period

Thirty‐six cross‐bred cows were used to study the effect of long‐chain (flaxseed) or short‐chain (butyric acid) fatty acid supplementation on metabolic status, ovarian function and reproduction performance during transition period. Control cows received a routine feed of transition diet, while the cows in two treatment groups were supplemented with either 750‐g crushed flaxseed or 250 g butyric acid per cow per day. Ovarian activity was monitored by transrectal ultrasonography on 10th, 20th and 30th days post‐partum. Blood samples were collected by jugular venipuncture into heparinized polystyrene tubes; plasma was prepared and stored under ?20 °C until analysis. Results indicated that cows in flaxseed group were in positive energy balance as indicated by lower NEFA and Beta hydroxy Butyrate and higher glucose concentrations. Uterine involution was completed well within 30 days post‐partum in all the cows in flaxseed fed group compared to 76.9% in butyric acid supplemented and 61.5% in control groups. The size of dominant follicle and corpus luteum was significantly higher (p < 0.05) for flaxseed group compared to control group, which in turn resulted in higher concentrations of plasma progesterone. Cows fed on diets supplemented with flaxseed exhibited post‐partum heat earlier and bred sooner (p < 0.05) than control cows. It has been noticed that supplementation of flaxseed and butyric acid enhanced involution of uterus, early resumption of cyclicity and thereby early breeding. However, in view of the encouraging results obtained for flaxseed supplemented group, its organic nature and easier availability at farmer's gate, we concluded that flaxseed can be safely included in transition diet to modulate reproductive performance of dairy cattle.     

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.     

丁酸钠和芽孢杆菌制剂联用对彭县黄鸡屠宰性能、脂肪酸及肠道菌群的影响

为比较添加不同浓度丁酸钠和枯草芽孢杆菌单用和联用对地方家禽彭县黄鸡屠宰性能、脂肪酸、肠道菌群的影响,试验选取健康且体重相近的100日龄彭县黄鸡(公鸡)共288羽,随机分成四个组,每组四个重复,每个重复18羽。Y0为对照组,饲喂基础日粮,Y1、Y2、Y3组分别在基础日粮中添加0.05%丁酸钠、0.03%枯草芽孢杆菌、0.05%丁酸钠+0.03%枯草芽孢杆菌。152日龄屠宰,测定屠宰性能、腿肌脂肪酸含量和盲肠菌群含量和pH。结果表明:日粮中添加0.05%的丁酸钠能提高活重、腹脂重,较对照组分别提高3.50%、369.30%(P<0.05);降低腺胃率、致病菌沙门氏菌的数量,较对照组分别降低18.75%、83.58%(P<0.05)。日粮中添加0.03%的枯草芽孢杆菌能提高活重、肌胃重、肌胃率(P<0.05),较对照组分别提高4.3%、17.08%、16.33%;降低饱和脂肪酸中的硬脂酸C18:0含量,较对照组降低18.39%(P<0.05)。日粮中添加0.05%丁酸钠+0.03%枯草芽孢杆菌能降低屠体重、全净膛重、全净膛率和半净膛率,较对照组分别降低2.52%、6.95%、8.29%、6.90%(P<0.05);提高肌胃重、γ-亚油酸C18:3n6的水平、双歧杆菌数量,较对照组分别提高15.52%、31.25%、652.19%(P<0.05)。综上,单独添加0.05%丁酸钠、0.03%枯草芽孢杆菌均能在提高屠宰性能、改善肠道微生物菌群、改善肉质脂肪酸水平方面起到有利作用,而二者联用并不理想。     

Dietary administration of probiotics to sows and/or their neonates improves the reproductive performance,incidence of post‐weaning diarrhea and histopathological parameters in the intestine of weaned piglets

Probiotics have gained considerable attention with respect to their beneficial effects on livestock performance and health. The most significant effects of probiotics on the gut microbiota and the host animals take place when they are included in diets during particularly stressful periods such as weaning and/or at the beginning of the lactation period. The probiotics Bacillus mesentericus strain TO‐A at 1 × 10⁸ colony forming units (CFU)/g, Clostridium butyricum strain TO‐A at 1 × 10⁸ CFU/g and Enterococcus faecalis strain T‐110 at 1 × 10⁹ CFU/g were used. Litter weight at delivery and ratio of return to estrous improved significantly (17% and 24% improvement, respectively) by probiotic administration to sows (0.2% (w/w)). Furthermore, the feed intake of the probiotics‐administered sows was greater than that of the control sows during the late lactation period. Post‐weaning diarrheal incidence and growth performance was improved by probiotics administration to neonates (0.02% (w/w)), while the combined use of probiotics in sows and their neonates induced the enlargement of villous height and prevented muscle layer thinning in the small intestine of weaning piglets. The administration of probiotics of three species of live bacteria improved the porcine reproductive performance around stressful periods of sows (farrowing) and piglets (weaning). [Corrections added on 26 April 2016, after first online publication: ‘Enterococcus faecalis strain T‐100’ has been corrected to ‘Enterococcus faecalis strain T‐110’ in the above paragraph and in the ‘Probiotics’ section under the Materials and Methods heading.]     

Repeated pregnant mare serum gonadotropin‐mediated oestrous synchronization alters gene expression in the ovaries and reduces reproductive performance in dairy goats

This study aimed to elucidate the effects of repeated pregnant mare serum gonadotropin (PMSG) treatment for oestrous synchronization (ES) on ovarian gene expression and reproductive parameters in Xinong Saanen dairy goats, the dominant breed of dairy goat in China. The experiment was carried out at the Research Station of Northwest A&F University (NWAFU), China (34°16′N, 108°4′E). Forty‐one does were randomly assigned to groups receiving ES treatments thrice every fortnight (3‐PMSG group; n = 19), or ES treatment only once simultaneously with the third ES treatment in the 3‐PMSG group (1‐PMSG group; n = 22) during middle of the breeding season from late July (14 hr light) until late September (12 hr light). ES treatment was performed via intravaginal insertion of a controlled internal drug release (CIDR) device impregnated with 300 mg progesterone (P4), followed by 300 IU PMSG injections 48 hr before CIDR withdrawal. Oestrus was monitored using vasectomized bucks. Ovaries of three goats in oestrus from both groups were harvested for morphological examination and RNA sequencing (RNA‐Seq). Then, all the oestrous goats in the 1‐PMSG (n = 21) and 3‐PMSG (n = 11) groups were artificially inseminated twice. The 3‐PMSG group showed reduced oestrous rate (57.89%), pregnancy rate (31.58%) and litter size (1.17) compared, respectively, with 95.45%, 68.18% and 1.67 for 1‐PMSG group (p < 0.05). However, no differences were found in the ovarian morphology between the 1‐PMSG and 3‐PMSG groups (p > 0.05). RNA‐Seq revealed 114 differentially expressed genes (DEGs) in the ovaries of the 3‐PMSG group, among which GCG, FSTL3, TET3 and AQP3 were deemed novel and promising candidate genes for regulating fertility. The present study indicates that the three‐time PMSG treatment dysregulated several ovarian genes, thereby reducing reproductive performance.     

Influence of dietary fat source on sow and litter performance,colostrum and milk fatty acid profile in late gestation and lactation

The objective of this study was to investigate the effects of dietary supplementation with various fat sources (3.8–3.9% of diet) during late pregnancy and lactation on the reproductive performance, fatty acids profile in colostrum, milk and serum of sow progeny. A total of 80 multiparous sows were randomly fed a control (adding no oil), palm oil (PO), fish oil (FO) or soybean oil (SO) supplemented diet from 90 days of pregnancy to weaning. Supplementation of FO increased litter size of weak piglets, compared with the control‐fed sows (P < 0.05). Dietary FO and SO supplementation, enhanced the weaning survival rate, litter weaning weight, litter weight gain and fat content in milk (P < 0.05). The highest immunoglobulin (Ig)G and IgM levels in colostrum and milk were observed in the FO group (P < 0.05). Meanwhile, the highest concentration of C22:5 (n‐3) and C22:6 (n‐3) in colostrum, milk and piglet serum was observed in the FO group (P < 0.05). Taken together, dietary inclusion of FO or SO improved growth performance of nursing piglets by increasing milk fat output, and FO consumption by sows might benefit the piglets via increasing n‐3 polyunsaturated fatty acid availability and immunoglobulins (IgG and IgM) secretion.