The aim of this study was to determine the effect of cinnamon oil supplementation of the lactation diet on sows’ daily feed intake, milk production, and pre-weaning piglet performance and mortality. A total of 85 crossbred Landrace × Yorkshire sows were distributed in two groups: i) control: sows (n = 43) received a conventional lactation diet; and ii) treatment: sows (n = 42) received the same lactation diet but supplemented with 1.0 g cinnamon oil per kilogram of feed. The feeding schedule started from 109 days of gestation and continued during lactation until weaning at 25.2 ± 2.6 days after parturition. The sow parameters recorded during the study were daily feed intake, milk production and immunoglobulin G (IgG) concentration, and wean-to-first service interval (WSI). The piglet parameters were body weight at 1, 3, 7, 10 and 21 days of age; litter weight gain; serum insulin-like growth factor I (IGF-1) and pre-weaning mortality rate. On average, the sows’ daily feed intake was 5.79 ± 2.22 kg and varied among sows from 0 to 10 kg. Mean daily feed intake during lactation of sows on the control diet (5.66 ± 0.18 kg) did not differ with parity, but dietary supplementation with cinnamon oil increased feed intake in multiparous sows (6.20 ± 0.21 versus 5.66 ± 0.20 kg, P = 0.060) but not in primiparous sows (5.13 ± 0.33 versus 5.56 ± 0.33 kg, P = 0.359). There was no effect of the cinnamon oil supplementation on milk production and piglet performance. The average daily weight gain (238.9 ± 7.3 versus 241.1 ± 7.2 g/day) and serum IGF-1 (110.7 ± 8.6 versus 114.9 ± 7.6 ng/ml) of the piglets did not differ significantly between control and treatment groups, respectively (P > 0.05). Across groups, the sows’ milk yield at 3–10 and 10–17 days of lactation was 8.22 ± 1.29 and 10.40 ± 2.12 kg, respectively (P < 0.001). The pre-weaning piglet mortality rate was lower in the treatment compared with the control group (15.5% and 25.6%, respectively, P = 0.029). In conclusion, cinnamon oil supplementation 1.0 g per kilogram of the lactation diet in a tropical environment can increase daily feed intake of multiparous sows and decrease pre-weaning piglet mortality.

本研究的目的是确定在泌乳日粮中添加肉桂油对母猪每日采食量、产奶量以及断奶前仔猪生产性能和死亡率的影响。总共 85 头长白×约克夏杂交母猪被分为两组：i ) 对照：母猪（n = 43）接受常规泌乳日粮；和ii) 处理：母猪（n = 42）接受相同的泌乳日粮，但每公斤饲料添加 1.0 克肉桂油。喂养计划从妊娠 109 天开始，在哺乳期间一直持续到分娩后 25.2 ± 2.6 天断奶。研究期间记录的母猪参数包括每日采食量、产奶量和免疫球蛋白 G (IgG) 浓度，以及断奶至首次配种间隔 (WSI)。仔猪参数是 1、3、7、10 和 21 日龄的体重；窝增重；血清胰岛素样生长因子 I (IGF-1) 和断奶前死亡率。平均而言，母猪的每日采食量为 5.79 ± 2.22 kg，并且在 0 至 10 kg 之间变化。母猪在哺乳期间使用对照日粮（5.66 ± 0.18 kg）的平均日采食量与胎次没有差异，P  = 0.060），但在初产母猪中没有（5.13 ± 0.33 vs 5.56 ± 0.33 kg，P  = 0.359）。添加肉桂油对产奶量和仔猪生产性能没有影响。仔猪的平均每日增重（238.9 ± 7.3 与 241.1 ± 7.2 g/天）和血清 IGF-1（110.7 ± 8.6 与 114.9 ± 7.6 ng/ml）分别在对照组和治疗组之间没有显着差异（P > 0.05）。在各组中，母猪在泌乳 3-10 天和 10-17 天的产奶量分别为 8.22 ± 1.29 和 10.40 ± 2.12 kg ( P < 0.001)。治疗组断奶前仔猪死亡率低于对照组（分别为15.5%和25.6%，P = 0.029）。总之，在热带环境中每公斤泌乳日粮添加 1.0 g 肉桂油可以增加经产母猪的日采食量并降低断奶前仔猪的死亡率。