Effects of dietary humic substances on egg production and egg shell quality of hens after peak laying period.
Effects of dietary humic substances on egg production and egg shell quality of hens after peak laying period.
复制标题
日粮腐殖质对产蛋高峰期后母鸡产蛋量及蛋壳质量的影响
DOI：
10.4314/ajb.v8i6.60049
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Erener Guray
中科院分区：
文献类型：
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作者：
Ozturk Ergin;C. Isa;Ocak Nuh;Erener Guray
将90只51 ~ 61周龄的伊萨褐蛋鸡分为3个处理组，即H 0、H1和H2。对照组（H 0）母鸡饲喂商业饮食，而H1和H2母鸡分别饲喂含有30和90 ppm液体形式的膳食腐殖酸的饮食。将母鸡单独置于三层笼中。H2组产蛋量显著高于对照组（P < 0.05）。H2蛋鸡的蛋重显著高于H 0和H1蛋鸡（P < 0.05）。H2组总采食量显著高于H1组（P < 0.05）。蛋壳厚度H1组显著高于H2组（P <0.05）。蛋壳强度H1组显著高于对照组和H2组（P < 0.05）。蛋重、饲料转化率和蛋黄重不受日粮腐殖物质的影响。这些结果表明，与对照组相比，在日粮中添加30 ppm腐植酸可增加蛋壳强度，而不影响产蛋量和饲料效率。
Ninety Isa Brown layers from 51 to 61 weeks of age were allocated to three treatment groups, namely H0, H1 and H2. Control (H0) hens were fed a commercial diet while H1 and H2 hens were fed a diet including 30 and 90 ppm dietary humic acid in liquid form, respectively. Hens were placed individually in cages in three tier batteries. Egg production (% hen-day) in the H2 group was higher (P < 0.05) than control group. Egg mass of H2 hens was higher (P < 0.05) than H0 and H1 hens. Total feed intake in H2 group was significantly higher (P < 0.05) than H1 group. Egg shell thickness of H1 hens was higher (P <0.05) than H2 hens. Egg shell strength of H1 hens was higher (P < 0.05) than control and H2 hens. Egg weight, feed conversation ratio and yolk weight were not affected by dietary humic substances. These results indicated that the supplementation of 30 ppm humic acid into the diet may increase the egg shell strength without affecting egg production and feed efficiency compared to control counterparts.