The experiment was conducted to determine the long-term effects of dietary canola meal (CM) inclusion as the main protein source in gestation and lactation diets on sow and litter performance. Sows (n = 68) from two baches were randomly allotted 1 of 2 diets on d 80 of pregnancy. The two diets were a corn-barley and soybean meal control diet (CTRL) and a corn-barley and CM treatment diet (CCM). All diets were formulated to be similar in standardized ileal digestible amino acid and net energy contents. Sow body weight (BW) and backfat (BF) thickness were determined on d 1, 35, 80, and 111 of pregnancy, on d 1 and 21 post-farrowing. Piglets were weighed on d 0 and at weaning (d 21). Data were analyzed using the PROC MIXED procedure of SAS 9.4 for a randomized complete block design with repeated measures. Over the two reproductive cycles, dietary treatments did not influence sow BW and BF thickness on d 80 and 111 of pregnancy, as well as d 1 and 21 post-farrowing (P > 0.10). However, sows fed the CCM diet had less (P < 0.05) BW and BF thickness on d 1 and 35 of pregnancy in the second reproductive cycle than sows fed the CTRL diet. The CCM diet decreased gestation gain from d 80 to d 111 of pregnancy compared with the CTRL diet over the two reproductive cycles (P < 0.05). No dietary effect on litter size or litter performance was found during the experimental period (P > 0.10). However, reproductive cycle had significant effects (P < 0.05) on BW gain and BF thickness from d 80 to 111 of pregnancy as well as BW and BF thickness on d 1 of lactation. In addition, litter weight at birth and after cross-fostering were significantly improved during the second reproductive cycle compared with the first cycle (P < 0.05). An interaction between dietary treatment and reproductive cycle on BW gain and BW on d 1 of lactation was observed (P < 0.05). In conclusion, feeding gestation and lactation diets containing CM as the main protein source to sows over two reproductive cycles supported similar sow reproductive and litter performance as the control.

中文翻译：

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494 妊娠和哺乳期日粮中添加菜籽粕对两个繁殖周期中母猪和仔猪生产性能的长期影响


进行该实验以确定在妊娠和哺乳日粮中加入菜籽粕 （CM） 作为主要蛋白质来源对母猪和窝产仔猪生产性能的长期影响。来自两头母猪的母猪 （n = 68） 在怀孕第 80 天被随机分配到 2 种日粮中的 1 种。两种日粮是玉米-大麦和豆粕对照日粮 （CTRL） 和玉米-大麦和 CM 处理日粮 （CCM）。所有日粮的标准化回肠可消化氨基酸和净能量含量均相似。在妊娠第 1 天、第 35 天、第 80 天和第 111 天、分娩后第 1 天和第 21 天测定母猪体重 （BW） 和背膘 （BF） 厚度。仔猪在第 0 天和断奶时 （第 21 天） 称重。使用 SAS 9.4 的 PROC MIXED 程序分析数据，进行重复测量的随机完全区组设计。在两个繁殖周期中，日粮处理对妊娠第 80 天和第 111 天以及分娩后第 1 天和第 21 天的母猪体重和 BF 厚度没有影响 （P > 0.10）。然而，饲喂 CCM 日粮的母猪在第二个繁殖周期的第 1 天和第 35 天体重和 BF 厚度低于饲喂 CTRL 日粮的母猪。在两个生殖周期中，与 CTRL 饮食相比，CCM 饮食降低了妊娠 80 至 111 天的胎龄增重 （P < 0.05）。在实验期间，饮食对窝产数或窝产粒性能没有影响 （P > 0.10）。然而，生殖周期对妊娠 d 80 至 111 的 BW 增加和 BF 厚度以及哺乳期 d 1 的 BW 和 BF 厚度有显著影响 （P < 0.05）。此外，与第一周期相比，第二生育周期出生时和交叉寄养后的窝重显著改善 （P < 0.05）。 观察到饮食处理和生殖周期对泌乳第 1 天 BW 增加和 BW 的交互作用 （P < 0.05）。总之，在两个繁殖周期中，以 CM 作为母猪主要蛋白质来源的妊娠和哺乳期日粮支持与对照组相似的母猪繁殖和窝产性能。