Nutritional implications of pectins in chicks in relation to esterification and origin of pectins
Nutritional implications of pectins in chicks in relation to esterification and origin of pectins
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DOI：
10.3382/ps.0751236
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发表时间：
1996-10-01
期刊：
影响因子：
4.4
通讯作者：
Schutte, JB
中科院分区：
文献类型：
--
作者：
Langhout, DJ;Schutte, JB
本试验研究了高甲基化果胶和低甲基化果胶对肉仔鸡生产性能和生理特性的影响。将两种水平（1.5%和3%）的HM柑橘果胶（HMC）、LM柑橘果胶（LMC）或HM甜菜果胶（HMS）各自添加到半纯化的基础饮食中。试验在6 ~ 27日龄的笼养育雏鸡中进行，试验结果表明，在日粮中添加LMC或HMS对雏鸡的生产性能影响不大，但添加HMC后，雏鸡的生长和饲料利用率显著降低（P < 0.05）。日粮中添加三种果胶产品后，饮水量和水料比均显著增加（P < 0.05）。对饮水量的影响在含HMC的饲料中比在LMC或HMS饲料中更明显，并且具有剂量依赖性。在体外粘度显着增加，通过将HMC或LMC到饮食中，而HMS对这个参数没有影响。日粮中添加其中一种果胶能显著提高日粮的持水力和排泄物的持水力（P < 0.05）。饲喂HMC显著降低盲肠食糜中部分挥发性脂肪酸（VFA）含量（P < 0.05），而饲喂LMC对VFA含量无影响（P > 0.05）。相反，添加HMS可显著提高盲肠内容物中VFA的含量（P < 0.05），且呈剂量依赖性。根据本研究的结果，可以得出结论，膳食果胶对鸡的生产性能的影响取决于酯化的羧基的程度，果胶产品的来源，以及添加到饮食中的量。
An experiment was conducted to examine the effect of feeding high-methylated (HM) and low-methylated (LM) pectin on performance and physiological characteristics in broiler chicks. Two levels each (1.5 and 3%) of HM citrus pectin (HMC), LM citrus pectin (LMC), or HM sugar beet pectin (HMS) were added to a semi-purified basal diet. The experiment was conducted in battery brooders, and chicks received the diets as pellets from 6 to 27 d of age.The inclusion of LMC or HMS in the diet had little or no effect on the performance of chicks; however, when HMC was added to the diet growth and feed utilization were reduced significantly (P < 0.05). Water intake and water:feed ratio were increased (P < 0.05) after inclusion of all three pectin products in the diet. The effect on water consumption was more pronounced in the HMC-containing diets than in the LMC or HMS diets, and was dose-dependent. In vitro viscosity was increased significantly by incorporating HMC or LMC into the diet, whereas HMS had no effect on this parameter. Water-holding capacity of the diets and the excreta were increased significantly by including one (P < 0.05) of the three pectin products in the diet. The concentration of some of volatile fatty acids (VFA) in the cecal chyme was markedly decreased (P < 0.05) by feeding HMC, whereas LMC had no effect (P > 0.05) on the concentration of VFA. In contrast, inclusion of HMS in the diet significantly increased the concentration of VFA in the cecal content (P < 0.05) dose-dependently. Based on the results of the present study, it can be concluded that the effect of dietary pectin on chick performance is dependent on the degree of carboxyl groups that is esterified, the origin of the pectin product, and the amount added to the diet.