饲喂含有可溶物的干酒糟和外源酶混合物的母鸡的产蛋性能、身体状况及蛋的内部品质标准
Laying Performance, Physical, and Internal Egg Quality Criteria of Hens Fed Distillers Dried Grains with Solubles and Exogenous Enzyme Mixture.
作者信息
El-Hack Mohamed E Abd, Mahrose Khalid M, Attia Faten A M, Swelum Ayman A, Taha Ayman E, Shewita Ramadan S, Hussein El-Sayed O S, Alowaimer Abdullah N
机构信息
Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
Animal Production Department, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt.
出版信息
Animals (Basel). 2019 Apr 6;9(4):150. doi: 10.3390/ani9040150.
The effects of dietary inclusion of distillers dried grains with solubles in laying hen diets with and without exogenous enzyme mixture (EEM) on performance and egg characteristics were evaluated. One of the main objectives of this study was to examine the effects of distillers dried grains with solubles (DDGS) and enzyme cocktail on egg yolk fatty acids. The study used total of 144 Hisex Brown laying hens in a 4 × 2 factorial arrangement, including four levels of DDGS (0, 6, 12, and 18% of diet) and two levels of enzyme cocktail (0 or 250 mg EEM/kg of diet) through 32⁻42 weeks of the age. The inclusion of 18% DDGS was associated with the worst ( 0.001) egg production and the lowest daily feed intake. Numerically, hens fed 6% DDGS diet consumed more feed and had the greatest egg production. The best feed conversion ratio (FCR) was recorded in the control, while the worst was recorded in the 18% DDGS group. Compared with EEM-free diets, EEM supplementation improved FCR by about 2.79%, but the difference was not significant. Shell thickness and shell percentage were significantly increased in hens fed 6% DDGS diet compared to other groups. Egg weights in the 6% and 12% DDGS groups were significantly higher than those in the control and 18% DDGS groups. Non-significant increases in shell and albumin percentages were recorded in groups fed EEM-supplemented diets. The interaction effect of DDGS and EEM was significant ( 0.01) for the majority of egg characteristics. As dietary DDGS level increased, yolk color density increased. Elevating DDGS level up to 18% increased yolk cholesterol, total fat, and total unsaturated fatty acids. The effects of EEM supplementation on egg yolk fatty acid composition and the interaction effects between DDGS and EEM were not significant. Considering these results, it could be concluded that DDGS is an acceptable feed ingredient in layer diets and that the maximum inclusion level of DDGS should not exceed 12% of the whole diet.
本试验旨在评估在蛋鸡日粮中添加玉米酒糟及其可溶物（DDGS）以及外源酶混合物（EEM）对蛋鸡生产性能和蛋品质的影响。本研究的主要目的之一是研究DDGS和酶制剂对蛋黄脂肪酸的影响。本试验采用4×2析因设计，选用144只海赛克斯褐蛋鸡，设4个DDGS水平（占日粮的0、6、12和18%）和2个酶制剂水平（0或250 mg EEM/kg日粮），试验期为32至42周龄。添加18% DDGS时蛋鸡产蛋性能最差（P<0.001），日采食量最低。从数据上看，饲喂6% DDGS日粮的蛋鸡采食量更多，产蛋量最高。对照组的饲料转化率（FCR）最佳，18% DDGS组最差。与不添加EEM的日粮相比，添加EEM可使FCR提高约2.79%，但差异不显著。与其他组相比，饲喂6% DDGS日粮的蛋鸡的蛋壳厚度和蛋壳比例显著增加。6%和12% DDGS组的蛋重显著高于对照组和18% DDGS组。添加EEM的日粮组的蛋壳和蛋白比例有不显著增加。DDGS和EEM对大多数蛋品质指标存在显著的交互作用（P<0.01）。随着日粮中DDGS水平的增加，蛋黄颜色加深。DDGS水平提高到18%时，蛋黄胆固醇、总脂肪和总不饱和脂肪酸含量增加。添加EEM对蛋黄脂肪酸组成的影响以及DDGS和EEM之间的交互作用不显著。综合以上结果，可以得出结论，DDGS是蛋鸡日粮中一种可接受的饲料原料，DDGS的最大添加量不应超过全价日粮的12%。
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