不同蛋氨酸来源对肉种鸡生产性能、繁殖性能、蛋品质及血清生化指标的影响
Effects of different methionine sources on production and reproduction performance, egg quality and serum biochemical indices of broiler breeders.
作者信息
Xiao Xue, Wang Yongxia, Liu Weilong, Ju Tingting, Zhan Xiuan
机构信息
Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, Zhejiang 310058, China.
College of Animal Science and Technology, Zhejiang Agricultural and Forestry University, Lin'an, Zhejiang 311300, China.
出版信息
Asian-Australas J Anim Sci. 2017 Jun;30(6):828-833. doi: 10.5713/ajas.16.0404. Epub 2016 Dec 17.
OBJECTIVE
The study was conducted to evaluate the effects of different methionine (Met) sources on production performance, reproduction performance, egg quality and serum biochemical indices in broiler breeders.
METHODS
After receiving a basal diet (containing 0.25% Met) for a 2-wk pretreatment period, a total of 360 39-wk-old Lingnan yellow broiler breeders were randomly allocated to four treatments with six replicates each (15 birds per replicate). Breeders were fed with basal diets (control) or diets supplemented with DL-methionine (DLM), DL-2-hydroxy-4-methylthio butytric calcium (MHA-Ca) and coated DL-Met (CME) respectively.
RESULTS
The results showed that CME supplementation promoted laying rate and decreased feed-to-egg ratio (F/E) (p<0.05), DLM and MHA-Ca supplementation decreased F/E (p<0.05) when compared with control group. The rate of fertility, hatchability and birthrate were higher (p<0.05) in DLM, MHA-Ca, and CME groups than control group. Compared with control group, CME increased the eggshell thickness (p<0.05); MHA-Ca improved the eggshell thickness, shell ratio and eggshell strength (p<0.05). Results also showed that CME elevated the concentration of total protein in serum (p<0.05); MHA-Ca improved the concentration of calcium in serum (p<0.05). The concentration of serum uric acid in DLM, MHA-Ca, and CME groups was lower than that in control group (p<0.05). Besides, CME had higher concentrations of serum taurine, cysteine and cystanthionine (p<0.05) while MHA-Ca and DLM promoted the serum taurine concentration (p<0.05) compared with control group.
CONCLUSION
Based on the results, it was concluded that Met supplementation could enhance the production and reproduction performance as well as the antioxidant status and egg quality of broiler breeders. In terms of improving the production performance, reproduction performance and antioxidant performance, CME was superior to DLM and MHA-Ca; but in regard to the enhancement of eggshell quality and serum Ca concentration, MHA-Ca was superior to DLM and CME.
目的
本研究旨在评估不同蛋氨酸（Met）来源对肉种鸡生产性能、繁殖性能、蛋品质和血清生化指标的影响。
方法
在为期2周的预试验期内给予基础日粮（含0.25% Met）后，将360只39周龄岭南黄肉种鸡随机分为4组，每组6个重复（每个重复15只鸡）。分别给种鸡饲喂基础日粮（对照组）或添加DL-蛋氨酸（DLM）、DL-2-羟基-4-甲硫基丁酸钙（MHA-Ca）和包膜DL-蛋氨酸（CME）的日粮。
结果
结果表明，与对照组相比，添加CME可提高产蛋率并降低料蛋比（F/E）（p<0.05），添加DLM和MHA-Ca可降低F/E（p<0.05）。DLM、MHA-Ca和CME组的受精率、孵化率和出生率均高于对照组（p<0.05）。与对照组相比，CME增加了蛋壳厚度（p<0.05）；MHA-Ca提高了蛋壳厚度、壳重比和蛋壳强度（p<0.05）。结果还显示，CME提高了血清总蛋白浓度（p<0.05）；MHA-Ca提高了血清钙浓度（p<0.05）。DLM、MHA-Ca和CME组的血清尿酸浓度低于对照组（p<0.05）。此外，与对照组相比，CME的血清牛磺酸、半胱氨酸和胱硫醚浓度较高（p<0.05），而MHA-Ca和DLM提高了血清牛磺酸浓度（p<0.05）。
结论
基于研究结果得出结论，补充蛋氨酸可提高肉种鸡的生产性能、繁殖性能以及抗氧化状态和蛋品质。在提高生产性能、繁殖性能和抗氧化性能方面，CME优于DLM和MHA-Ca；但在提高蛋壳质量和血清钙浓度方面，MHA-Ca优于DLM和CME。
Zotero 插件