Dietary calcium and non-phytate phosphorus levels affect performance, follicular development, and egg quality of native chicken at peak laying period

IF 3.8 1区农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Poultry Science Pub Date : 2025-03-16 DOI:10.1016/j.psj.2025.105055

L.F. Cheng , Q.Q. Zhang , W.Y. Zhao , C. Chang , X. Wang , Z.X. Yan , J. Cao , H.G. Liu , A.L. Geng

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引用次数: 0

Abstract

The experiment aimed to study effects of dietary calcium (Ca) and non-phytate phosphorus (NPP) levels on performance, follicular development, egg quality and serum biochemical indices in native bird-Beijing You Chicken (BYC). A 3 × 3 factorial design was adopted, dietary Ca levels were 2.8 %, 3.2 % and 3.6 %, dietary NPP levels were 0.33 %, 0.38 % and 0.43 %. A total of 972, 28-wk-old BYC laying hens were randomly divided into 9 groups with 4 replicates per group, and 27 birds per replicate. The trial was conducted after 2 wks of pre-adaptation. The performance was determined during 30∼35 wks, 36∼41 wks and 30∼41 wks; follicular development, egg quality and serum biochemical indices were determined at 41 wks of age. The results showed that dietary Ca and NPP levels alone and the interaction affected feed egg ratio (FER) of BYC during 30∼35 wks (P < 0.05), the FER was the lowest (2.65±0.05) and the egg-laying rate was the highest (77.45±3.19 %) in the group with 3.6 % Ca and 0.43 % NPP. Dietary 0.33 % NPP and 0.43 % NPP increased the number of small yolk follicles (P < 0.05). Dietary 3.6 % Ca deepened the yolk color (YC) (P < 0.001), dietary NPP level affected the YC, Haugh unit (HU), relative yolk weight (RYW) and relative albumen weight (RAW) (P < 0.05). The interaction of dietary Ca and NPP levels affected eggshell color (ESC) (P < 0.05), YC (P < 0.001), and relative eggshell weight (RESW) (P < 0.001), also had the trend to affect eggshell strength (ESS) (P = 0.073), albumen height (AH) (P = 0.077) and HU (P = 0.055). 4) 0.43 % NPP had a trend to affect malondialdehyde (MDA) (P = 0.064). In summary, dietary Ca and NPP levels alone and the interaction did not affect egg production of BYC, and FER in the group with 3.6 % Ca and 0.43 % NPP seemed to be the lowest during 35∼41 wks. Dietary NPP may be related to pre-graded follicular development. The recommended dietary Ca level is 3.6 % and NPP level is 0.43 % for BYC during the peak laying period. The Ca/NPP ratio in the range of 8.39∼9.67 may be beneficial to laying performance and egg quality of laying hens.

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来源期刊

Poultry Science 农林科学-奶制品与动物科学

CiteScore

7.60

自引率

15.90%

发文量

审稿时长

94 days

期刊介绍： First self-published in 1921, Poultry Science is an internationally renowned monthly journal, known as the authoritative source for a broad range of poultry information and high-caliber research. The journal plays a pivotal role in the dissemination of preeminent poultry-related knowledge across all disciplines. As of January 2020, Poultry Science will become an Open Access journal with no subscription charges, meaning authors who publish here can make their research immediately, permanently, and freely accessible worldwide while retaining copyright to their work. Papers submitted for publication after October 1, 2019 will be published as Open Access papers. An international journal, Poultry Science publishes original papers, research notes, symposium papers, and reviews of basic science as applied to poultry. This authoritative source of poultry information is consistently ranked by ISI Impact Factor as one of the top 10 agriculture, dairy and animal science journals to deliver high-caliber research. Currently it is the highest-ranked (by Impact Factor and Eigenfactor) journal dedicated to publishing poultry research. Subject areas include breeding, genetics, education, production, management, environment, health, behavior, welfare, immunology, molecular biology, metabolism, nutrition, physiology, reproduction, processing, and products.