Abstract Two experiments were conducted to determine effects of extrusion on energy and nutrient digestibility in cereal grains fed to growing pigs. One source of yellow dent corn, one source of hard red winter wheat, and one source of sorghum were ground to approximately 300 microns and each source of grain was divided into 2 batches. One batch of each grain was extruded, whereas the other batch was used without further processing. In Exp. 1, 7 diets were formulated to determine ileal starch and amino acid (AA) digestibility in the grains. Three diets contained the non-extruded grains and 3 diets contained the extruded grains. The last diet was an N-free diet that was used to determine basal endogenous losses of AA from the pigs. Seven growing barrows (initial body weight = 14.2 ± 0.9 kg) had a T-cannula installed in the distal ileum and were allotted to a 7 × 7 Latin square. Each experimental period lasted 7 days with the initial 5 days being the adaptation period and ileal digesta were collected on days 6 and 7. Results indicated that extruded grains had greater (P

中文翻译：

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生长猪对氨基酸、纤维和能量的消化率，以及黄马齿玉米、硬红冬小麦和高粱中可消化和代谢能量的浓度可能会受到挤压的影响

摘要 进行了两个实验来确定挤压对生长猪饲喂谷物的能量和养分消化率的影响。一种黄马齿玉米源、一种硬红冬小麦源和一种高粱源被研磨至大约 300 微米，每个谷物源分为 2 批。每种谷物挤出一批，而另一批未经进一步加工就使用。在 Exp. 1, 7 日粮配制以确定回肠淀粉和氨基酸 (AA) 在谷物中的消化率。三种日粮含有非挤压谷物，三种日粮含有挤压谷物。最后一个日粮是无氮日粮，用于确定猪的基础内源性氨基酸损失。七只生长中的手推车（初始体重 = 14.2 ± 0. 9 公斤）在回肠远端安装了一个 T 型套管，并被分配到一个 7 × 7 拉丁方格。每个试验期为 7 天，前 5 天为适应期，第 6 天和第 7 天收集回肠食糜。