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初產(chǎn)母豬妊娠后期日糧淀粉/脂肪比值和能量攝入對母豬和仔豬生產(chǎn)性能、脂肪代謝的影響

發(fā)布單位:天津瑞孚農(nóng)牧科技集團(tuán)有限公司

查看次數(shù)：5263

時(shí)間：2022-04-11
      本試驗(yàn)研究了母豬妊娠后期日糧淀粉/脂肪比值和能量攝入對母豬和仔豬生產(chǎn)性能、脂肪代謝的影響。

      選用80頭妊娠84天長白×約克夏初產(chǎn)母豬，根據(jù)體重完全隨機(jī)區(qū)組分至2×2個(gè)處理。試驗(yàn)處理分為2個(gè)能量攝入水平（正常能量攝入，8375 kcal代謝能/d；高能攝入，9600kcal代謝能/d），2個(gè)日糧淀粉/脂肪（10:1 VS 15:1）。從妊娠85天開始飼喂試驗(yàn)日糧，直到分娩。運(yùn)用SPSS的GLM程序分析試驗(yàn)數(shù)據(jù)。

      高能量攝入顯著提高母豬在妊娠110天時(shí)的體重（P=0.031），以及仔豬初生重（P=0.018）。能量攝入的增加提高了母豬和仔豬血漿中甘油三酯水平（P=0.027，0.044）。母豬高能量攝入改變了新生仔豬肝臟代謝，與碳水化合物和亞油酸代謝相關(guān)的代謝產(chǎn)物。此外，高能組新生仔豬肝臟總膽固醇和甘油三酯水平顯著提高（P=0.023,0.026），肝臟中脂肪酸合成酶的轉(zhuǎn)錄豐度和磷酸蛋白激酶B的蛋白豐度顯著提高（P=0.001,0.001）。高淀粉/脂肪顯著降低了母豬血漿、新生仔豬血漿和肝臟中低密度脂蛋白膽固醇的水平（P=0.044,0.048,0.015）。母豬日糧高淀粉/脂肪顯著提高了新生仔豬脂肪酸合成酶的轉(zhuǎn)錄豐度。

       總之，母豬高能量攝入顯著提高新生仔豬出生重，并且母豬高能量攝入和高日糧淀粉/脂肪可以改善出生仔豬脂肪代謝。


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.

文章來源：豬營養(yǎng)國際論壇
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