Cinnamon oil supplementation of the lactation diet improves feed intake of multiparous sows and reduces pre-weaning piglet mortality in a tropical environment
2021
Abstract 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
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