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初产母猪妊娠后期日粮淀粉/脂肪比值和能量摄入对母猪和仔猪生产性能、脂肪代谢的影响

发布单位:350vip葡亰集团

查看次数:1373

时间:2022-04-11
      本试验研究了母猪妊娠后期日粮淀粉/脂肪比值和能量摄入对母猪和仔猪生产性能、脂肪代谢的影响。

      选用80头妊娠84天长白×约克夏初产母猪,根据体重完全随机区组分至2×2个处理。试验处理分为2个能量摄入水平(正常能量摄入,8375 kcal代谢能/d;高能摄入,9600kcal代谢能/d),2个日粮淀粉/脂肪(10:1 VS 15:1)。从妊娠85天开始饲喂试验日粮,直到分娩。运用SPSS的GLM程序分析试验数据。

      高能量摄入显著提高母猪在妊娠110天时的体重(P=0.031),以及仔猪初生重(P=0.018)。能量摄入的增加提高了母猪和仔猪血浆中甘油三酯水平(P=0.027,0.044)。母猪高能量摄入改变了新生仔猪肝脏代谢,与碳水化合物和亚油酸代谢相关的代谢产物。此外,高能组新生仔猪肝脏总胆固醇和甘油三酯水平显著提高(P=0.023,0.026),肝脏中脂肪酸合成酶的转录丰度和磷酸蛋白激酶B的蛋白丰度显著提高(P=0.001,0.001)。高淀粉/脂肪显著降低了母猪血浆、新生仔猪血浆和肝脏中低密度脂蛋白胆固醇的水平(P=0.044,0.048,0.015)。母猪日粮高淀粉/脂肪显著提高了新生仔猪脂肪酸合成酶的转录丰度。

       总之,母猪高能量摄入显著提高新生仔猪出生重,并且母猪高能量摄入和高日粮淀粉/脂肪可以改善出生仔猪脂肪代谢。


Effect of maternal dietary starch-to-fat ratio and daily energy intake during late pregnancy on the performance and lipid metabolism of primiparous sows and newborn piglets
The present study evaluated the effects of maternal dietary energy intake and starch-to-fat ratio during late gestation on the performance and lipid metabolism of sows and their offspring. On day 84 of gestation, 80 Landrace × Yorkshire primiparous sows were assigned to 2 × 2 factorial arrangements according to body weight following a randomized complete block design. The factors were daily energy intake (8,375 kcal ME/d [CE] vs. 9,600 kcal ME/d [HE]) and dietary starch-to-fat ratio (10:1 [CR] vs. 15:1 [HR]). All sows were fed one of four diets from day 85 of gestation until farrowing. Data were analyzed using the GLM procedure in SPSS. High energy intake increased the body weight of sows on day 110 of gestation (P = 0.031) as well as the weight of piglets at birth (P = 0.018). Increased energy intake elevated the plasma triglyceride concentrations in sows (P = 0.027) and piglets (P = 0.044). Maternal high energy intake altered the liver metabolome of newborn piglets in terms of metabolites related to carbohydrate and linoleic acid metabolism. Moreover, maternal high energy intake increased hepatic total cholesterol (P = 0.023) and triglyceride (P = 0.026) concentration in newborn piglets. Furthermore, maternal high energy intake significantly increased the transcript abundance of fatty acid synthase (FAS; P = 0.001) and protein abundance of phosphorylated protein kinase B (P =0.001) in the liver of newborn piglets. A high starch-to-fat ratio reduced low-density lipoprotein cholesterol (LDL-C) concentration in the plasma of sows (P = 0.044) and newborn piglets (P = 0.048) as well as in the liver of newborn piglets (P = 0.015). Furthermore, maternal high starch-to-fat ratio increased the transcript abundances of FAS (P = 0.004) in newborn piglets. In conclusion, high daily energy intake of sows increased the birth weight of newborn piglets. Moreover, maternal high daily energy intake and high dietary starch-to-fat ratio improved the lipid metabolism of newborn piglets.

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