文献类型： 外文期刊

作者： Xia, W. G. ¹ ; Abouelezz, K. ¹ ; Huang, X. B. ¹ ; Li, K. C. ¹ ; Chen, W. ¹ ; Wang, S. ¹ ; Zhang, Y. N. ¹ ; Jin, C. L. ¹ ; Azzam, M. M. M. ³ ; Zheng, C. T. ¹ ;

作者机构： 1.Guangdong Acad Agr Sci, Guangdong Publ Lab Anim Breeding & Nutr, Nutr Guangdong Key Lab Anim Breeding & Nutr, Inst Anim Sci,Key Lab Anim Nutr & Feed Sci South C, Guangzhou 510640, Peoples R China

2.Assiut Univ, Fac Agr, Dept Poultry Prod, Assiut 71526, Egypt

3.King Saud Univ, Coll Food & Agr Sci, Anim Prod Dept, Riyadh 11451, Saudi Arabia

关键词： Duck breeder; Egg incubation; Egg production; Inorganic phosphorus; Tibial characteristics

期刊名称：ANIMAL （ 影响因子：3.6； 五年影响因子：3.7 ）

ISSN： 1751-7311

年卷期： 2023 年 17 卷 12 期

页码：

收录情况： SCI

摘要： Optimal dietary non-phytate phosphorus (NPP) is essential in poultry to maximise productive and reproductive performance, along with indices of egg and bone quality. This study aimed to establish the NPP requirements of egg-type duck breeders aged from 54 to 80 weeks on the following traits: egg production, egg incubation, egg quality, tibial characteristics, reproductive organ, plasma indices, and the expression of genes related to phosphorus absorption. Longyan duck breeders aged 54 weeks (n = 300) were randomly allotted to five treatments, each containing six replicates of 10 individually caged birds. Birds were fed corn-soybean meal-based diets containing 0.18, 0.25, 0.32, 0.38, and 0.45% NPP/kg for 27 weeks. The tested dietary NPP levels did not affect egg production or egg quality indices. The hatchling weight of ducklings increased (quadratic, P < 0.01) as dietary NPP level increased, and the highest value occurred with 0.25% NPP. The number of large yellow follicles (LYF), and the relative weights of LYF and ovary showed linear and quadratic responses to dietary NPP levels; the lowest number and relative weight of LYF occurred with 0.38% NPP, and the lowest ovarian weight was obtained with 0.25% NPP. There were no differences in tibial length, breaking strength, and mineral density in response to dietary NPP levels. In contrast, tibial content of Ca increased (linear, P < 0.01) with dietary NPP levels increasing from 0.18 to 0.45%, and the tibial content of P increased at 0.32% NPP and the higher dietary NPP levels. Plasma concentration of P showed a quadratic (P < 0.05) response to the dietary NPP levels, where the highest value was seen at 0.38% NPP. In conclusion, dietary NPP levels from 0.18 to 0.45% had no effects on egg production, and egg and tibial quality of duck breeders. The duck breeders fed a diet with 0.25% NPP showed the highest hatchling weight of their offspring, while those fed 0.38% NPP had the lowest number and relative weight of LYF. These results indicated that the diet with 0.25% NPP can be used in egg-type duck breeders to improve the hatchling weight of their offspring, without adverse effects on their productivity. The regression model indicated that the maximal hatchling weight of ducklings was obtained from duck breeders fed the diet with 0.30% NPP.(c) 2023 The Authors. Published by Elsevier B.V. on behalf of The Animal Consortium. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).