PDF(Pubmed)
Abstract：
UNASSIGNED: The study aimed to investigate the potential effects of varying wheat levels in broiler diets on growth performance, intestinal barrier, and cecal microbiota.
UNASSIGNED: Day-old male broilers were fed the same diet until 10 d of age. Then they were randomly assigned to 1) the low-level wheat group, where inclusion of 15.0% and 25.0% wheat in the grower and finisher diet, respectively, 2) the medium-level wheat group with 30.0% and 40.0% of wheat in the grower and finisher periods; and 3) the high-level wheat dietary group, in which the grower and finisher diets contained 55.77% and 62.38% of wheat, respectively.
UNASSIGNED: Dietary treatments unaffected the body weight at 39 d, whereas incorporating high wheat in diets significantly increased the feed intake and reduced the feed conversion ratio from 10 to 39 d (p < 0.05). Except for increased phosphorus digestibility in the high wheat group, dietary treatments had no significant effect on the apparent digestibility of dry matter, crude protein, and ether extract. Meanwhile, the broilers that consumed the medium and high content of wheat presented a higher villus height and the ratio of villus height to crypt depth than those fed the low-level wheat birds. Feeding the medium-level wheat enhanced ileal integrity and depressed the expression of proinflammatory cytokines in the ileum. The addition of high levels of wheat reduced the Chao1 index and the abundance of Lactobacillaceae, Bacteroidaceae, and Ruminococcacea in cecal content, which probably decreased the metabolism of histidine, sulfur-containing amino acids, and the biosynthesis of lysine.
UNASSIGNED: These results support the medium-level wheat diet improved intestinal barrier function and had no deleterious effects on the growth performance of broiler; dietary inclusion of high wheat reduced the feed conversion rate, which might be associated with the disturbed gut microbiota and decreased metabolism of amino acids.
UNASSIGNED: Day-old male broilers were fed the same diet until 10 d of age. Then they were randomly assigned to 1) the low-level wheat group, where inclusion of 15.0% and 25.0% wheat in the grower and finisher diet, respectively, 2) the medium-level wheat group with 30.0% and 40.0% of wheat in the grower and finisher periods; and 3) the high-level wheat dietary group, in which the grower and finisher diets contained 55.77% and 62.38% of wheat, respectively.
UNASSIGNED: Dietary treatments unaffected the body weight at 39 d, whereas incorporating high wheat in diets significantly increased the feed intake and reduced the feed conversion ratio from 10 to 39 d (p < 0.05). Except for increased phosphorus digestibility in the high wheat group, dietary treatments had no significant effect on the apparent digestibility of dry matter, crude protein, and ether extract. Meanwhile, the broilers that consumed the medium and high content of wheat presented a higher villus height and the ratio of villus height to crypt depth than those fed the low-level wheat birds. Feeding the medium-level wheat enhanced ileal integrity and depressed the expression of proinflammatory cytokines in the ileum. The addition of high levels of wheat reduced the Chao1 index and the abundance of Lactobacillaceae, Bacteroidaceae, and Ruminococcacea in cecal content, which probably decreased the metabolism of histidine, sulfur-containing amino acids, and the biosynthesis of lysine.
UNASSIGNED: These results support the medium-level wheat diet improved intestinal barrier function and had no deleterious effects on the growth performance of broiler; dietary inclusion of high wheat reduced the feed conversion rate, which might be associated with the disturbed gut microbiota and decreased metabolism of amino acids.
摘要：
■该研究旨在调查不同小麦水平在肉鸡日粮中对生长性能的潜在影响，肠屏障,和盲肠微生物群。
■日龄雄性肉鸡饲喂相同的饮食，直到10日龄。然后他们被随机分配到1)低水平小麦组，在种植者和整理者的饮食中包含15.0％和25.0％的小麦，分别,2）中等水平小麦组，在种植期和整理期分别占小麦的30.0％和40.0％；3）高水平小麦饲粮组，其中种植者和整理者日粮含有55.77%和62.38%的小麦，分别。
■第39天的饮食治疗不影响体重，从10d到39d，在日粮中掺入高小麦显着增加了采食量，并降低了饲料转化率（p<0.05）。除了高小麦组的磷消化率增加外，日粮处理对干物质的表观消化率没有显著影响，粗蛋白，和乙醚提取物。同时,食用中高含量小麦的肉鸡比饲喂低水平小麦的肉鸡具有更高的绒毛高度和绒毛高度与隐窝深度之比。饲喂中等水平的小麦可增强回肠的完整性，并抑制回肠中炎性细胞因子的表达。高水平小麦的添加降低了Chao1指数和乳杆菌科的丰度,拟杆菌科,和盲肠内容物中的Ruminococacea，这可能会降低组氨酸的代谢，含硫氨基酸,和赖氨酸的生物合成。
■这些结果支持中等水平的小麦饲粮改善了肠道屏障功能，对肉鸡的生长性能没有有害影响；饲粮中添加高小麦降低了饲料转化率，这可能与肠道菌群紊乱和氨基酸代谢减少有关。
■日龄雄性肉鸡饲喂相同的饮食，直到10日龄。然后他们被随机分配到1)低水平小麦组，在种植者和整理者的饮食中包含15.0％和25.0％的小麦，分别,2）中等水平小麦组，在种植期和整理期分别占小麦的30.0％和40.0％；3）高水平小麦饲粮组，其中种植者和整理者日粮含有55.77%和62.38%的小麦，分别。
■第39天的饮食治疗不影响体重，从10d到39d，在日粮中掺入高小麦显着增加了采食量，并降低了饲料转化率（p<0.05）。除了高小麦组的磷消化率增加外，日粮处理对干物质的表观消化率没有显著影响，粗蛋白，和乙醚提取物。同时,食用中高含量小麦的肉鸡比饲喂低水平小麦的肉鸡具有更高的绒毛高度和绒毛高度与隐窝深度之比。饲喂中等水平的小麦可增强回肠的完整性，并抑制回肠中炎性细胞因子的表达。高水平小麦的添加降低了Chao1指数和乳杆菌科的丰度,拟杆菌科,和盲肠内容物中的Ruminococacea，这可能会降低组氨酸的代谢，含硫氨基酸,和赖氨酸的生物合成。
■这些结果支持中等水平的小麦饲粮改善了肠道屏障功能，对肉鸡的生长性能没有有害影响；饲粮中添加高小麦降低了饲料转化率，这可能与肠道菌群紊乱和氨基酸代谢减少有关。
