Zhang Pengguang, Jiang Guoyuan, Ma Chenghong, Wang Yubo, Yan Enfa, He Linjuan, Guo Jianxin, Zhang Xin, Yin Jingdong
State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
J Anim Sci Biotechnol. 2023 Sep 10;14(1):114. doi: 10.1186/s40104-023-00920-6.
Maternal nutrition is essential in keeping a highly efficient production system in the pig industry. Laminarin has been shown to improve antioxidant capacity, reduce the inflammatory response, and favor the homeostasis of intestinal microbiota. However, the effect of dietary supplementation of laminarin on the reproductive performance of sows and the growth of suckling offspring remains unknown.
A total of 40 Landrace × Yorkshire multiparous sows on d 85 of gestation, similar in age, body weight (BW), parity and reproductive performance, were randomly divided into four dietary treatments with 10 sows per treatment, receiving a control diet (basal pregnancy or lactating diets) and a basal diet supplemented with 0.025%, 0.05% and 0.10% laminarin, respectively. The experiment lasted from d 85 of gestation to d 21 of lactation.
Laminarin supplementation linearly increased number born alive per litter (P = 0.03), average daily feed intake (ADFI, P < 0.01), and total milk yield of sows during the lactation of 1-21 d (P = 0.02). Furthermore, maternal laminarin supplementation increased the average daily gain (ADG) of piglets while tending to reduce the culling and death rate before weaning. In addition, alterations to the composition of colostrum and milk, as well as to serum inflammatory cytokines and immunoglobulins of sows were observed. The fecal microbiota profile of sows supported the improvement of reproductive performance in sows and the growth performance in suckling offspring.
Dietary supplementation of laminarin during late pregnancy and lactation could significantly improve reproductive performance of sows and growth performance of piglets.
母体营养对于维持养猪业高效生产系统至关重要。海带多糖已被证明可提高抗氧化能力、减轻炎症反应并有利于肠道微生物群的稳态。然而，日粮中添加海带多糖对母猪繁殖性能和哺乳仔猪生长的影响尚不清楚。
选取40头妊娠第85天的长白×大白经产母猪，它们在年龄、体重、胎次和繁殖性能方面相似，随机分为四个日粮处理组，每组10头母猪，分别饲喂对照日粮（基础妊娠或泌乳日粮）以及添加0.025%、0.05%和0.10%海带多糖的基础日粮。试验从妊娠第85天持续至泌乳第21天。
添加海带多糖使每窝产活仔数呈线性增加（P = 0.03），平均日采食量（ADFI，P < 0.01）以及母猪在泌乳第1 - 21天的总产奶量增加（P = 0.02）。此外，母体补充海带多糖提高了仔猪的平均日增重（ADG），同时趋于降低断奶前的淘汰率和死亡率。另外，还观察到初乳和乳汁成分以及母猪血清炎性细胞因子和免疫球蛋白的变化。母猪的粪便微生物群谱支持了母猪繁殖性能的改善和哺乳仔猪生长性能的提高。
妊娠后期和泌乳期日粮中添加海带多糖可显著提高母猪的繁殖性能和仔猪的生长性能。
