Cloutier Laetitia, Galiot Lucie, Sauvé Béatrice, Pierre Carole, Guay Frédéric, Dumas Gabrielle, Gagnon Patrick, Létourneau Montminy Marie-Pierre
Centre de Développement du Porc du Québec Inc., 815 Rte Marie-Victorin, Lévis, QC G7A 3S6, Canada.
Département des Sciences Animales, Université Laval, 2425 rue de l'Agriculture, Québec, QC G1V 0A6, Canada.
Animals (Basel). 2024 Dec 5;14(23):3513. doi: 10.3390/ani14233513.
This study evaluated the impact of precision feeding and bump feeding strategies during gestation on the reproductive performance of sows monitored over three cycles. Four treatments were compared: two constant-concentration feeding strategies (0.53% standardized ileal digestible lysine content; SID Lys) with the feed supply remaining constant (flat feeding; FF) or variable (bump feeding; BF) and two precision feeding strategies based on the InraPorc model considering performance by parity (precision feeding per parity; PFP) or the weight of each sow at breeding (precision feeding by individual; PFI). Sows were followed over three gestation and lactation cycles. In the first cycle (n = 502), the birth-to-weaning piglet mortality for PFP (8.7%) and PFI (10.3%) was lower than for BF (13.8%), with FF (11.3%) being intermediate ( = 0.001). No differences were observed in litter performance during the second cycle (n = 340). During the third cycle (n = 274), the stillborn rate was lower for PFP (6.2%) than for BF (9.1%) and FF (10.4%), with PFI (7.0%) being intermediate ( = 0.01). The BF strategy did not significantly improve sow or litter performance during lactation. Meanwhile, precision feeding could reduce nitrogen (10-13%) and total phosphorus intake (6-9%) with PFP and PFI strategies. Also, the results showed that it could even reduce piglet mortality during lactation.
本研究评估了妊娠期精准饲喂和递增饲喂策略对连续三个繁殖周期监测的母猪繁殖性能的影响。比较了四种处理方式：两种恒定浓度饲喂策略（标准回肠可消化赖氨酸含量为0.53%；SID Lys），饲料供应保持恒定（平饲；FF）或可变（递增饲喂；BF），以及两种基于InraPorc模型的精准饲喂策略，一种根据胎次考虑性能（按胎次精准饲喂；PFP），另一种根据配种时每头母猪的体重（个体精准饲喂；PFI）。对母猪进行了三个妊娠和泌乳周期的跟踪。在第一个周期（n = 502），PFP（8.7%）和PFI（10.3%）的仔猪出生至断奶死亡率低于BF（13.8%），FF（11.3%）居中（P = 0.001）。在第二个周期（n = 340），窝产性能未观察到差异。在第三个周期（n = 274），PFP（6.2%）的死胎率低于BF（9.1%）和FF（10.4%），PFI（7.0%）居中（P = 0.01）。BF策略在泌乳期未显著改善母猪或窝产性能。同时，精准饲喂可通过PFP和PFI策略减少氮摄入量（10 - 13%）和总磷摄入量（6 - 9%）。此外，结果表明，它甚至可以降低泌乳期仔猪死亡率。
