Long Li

Guangdong Academy of Agricultural Sciences

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Shouqun Jiang

Guangdong Academy of Agricultural Sciences

Zhongyong Gou

Guangdong Academy of Agricultural Sciences

Qiuli Fan

Nanjing Medical University

Xiajing Lin

Ministry of Agriculture and Rural Affairs

Yibing Wang

Shaanxi University of Science and Technology

Zongyong Jiang

Guangdong Academy of Agricultural Sciences

Zongyong Jiang

Guangdong Academy of Agricultural Sciences

HebatAllah Kasem El‐Senousey

Cairo University

Xiaoyan Cui

Nanjing Tech University

Yongle Duan

North China Municipal Engineering Design & Research Institute

Cooperative Institutions

Ministry of Agriculture and Rural Affairs

Guangdong Academy of Agricultural Sciences

Key Laboratory of Guangdong Province

Chinese Academy of Agricultural Sciences

Fuzhou University

Northwest A&F University

South China Agricultural University

Poultry Research Institute

Chinese Academy of Sciences

China Agricultural University

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Growth performance, carcass traits and meat quality of yellow‐feathered broilers fed graded levels of alfalfa meal with or without wheat

Animal Science Journal (2017)

Shouqun Jiang Zhongyong Gou Long Li Xiajing Lin Zongyong Jiang

Abstract The effects of 0, 40 and 80 g/kg alfalfa meal on growth performance, carcass traits and meat quality of Chinese yellow‐feathered broilers fed diets containing or lacking wheat (0 or 200 g/kg) as part of the energy source, were examined using random design with a 2 × 3 factorial arrangement of treatments. Dressing percentage and semi‐eviscerated proportion were lower, and meat color a* (redness) value was higher in birds fed diets containing wheat than diets lacking wheat ( P < 0.05). Drip loss was reduced by the addition of alfalfa meal to diets containing or lacking wheat ( P < 0.05). Average sensory score of breast meat was higher in chickens fed corn‐based diets than in those fed wheat ( P < 0.05). Meat from those supplemented with 40 g/kg alfalfa meal had better taste than the other two levels ( P < 0.05). The inclusion of wheat significantly reduced the activities of creatine kinase and calpain of breast muscle ( P < 0.05). In conclusion, Chinese yellow‐feathered broilers fed diets containing wheat had better meat color and lower drip loss than those fed the diets without wheat, and adding 40 g/kg alfalfa meal generally improved meat quality and taste.

10.1111/asj.12968

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白斑患者の焦慮、抑うつ情緒と皮膚損傷との関連性【JST・京大機械翻訳】

Zhonghua Pifuke Zazhi (2008)

Lu Yonghong Xiaojie Su Xiang Danli Shu Yu Wu Bo

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Effects of dietary threonine supplementation on productivity and expression of genes related to protein deposition and amino acid transportation in breeder hens of yellow-feathered chicken and their offspring

Poultry Science (2019)

Shouqun Jiang HebatAllah Kasem El‐Senousey Qiuli Fan Xiajing Lin Zhongyong Gou

This study investigated the effects of the dietary threonine (Thr) levels on the performance, offspring traits, embryo amino acid transportation, and protein deposition in breeder hens of yellow-feathered chickens. In total, 720 breeder hens of Lingnan yellow-feathered chickens were randomly assigned to 1 of 6 dietary treatments, with 6 replicates per treatment (20 birds per replicate). The breeder hens were fed either basal diet (Thr = 0.38%) or basal diet supplemented with 0.12, 0.24, 0.36, 0.48, or 0.60% Thr from 197 to 266 D. There was a positive response in terms of the laying rate after adding different levels of Thr to the diet, but no significant effects on the average daily gain, average daily egg weight, feed conversion ratio, average broken eggs, and unqualified egg rate (P > 0.05). However, the eggshell strength and eggshell percentage decreased in a linear manner as the dietary Thr concentration increased (P = 0.05). Dietary supplementation with Thr had significant effects on the expression of mucin 2 (MUC2) in the uterus and zonula occludens protein 1 (ZO-1) in the duodenum of breeders (P < 0.05). In chick embryos at embryonic age 18 D, significant upregulation of poultry target of rapamycin (pTOR) occurred in the liver and breast muscle, as well as threonine dehydrogenase (TDH) in the thigh, and aminopeptidase (ANPEP) (P < 0.05) in the duodenum and ileum due to dietary Thr supplementation, but there were no effects on MUC2 expression in the duodenum and ileum (P > 0.05). The livability of the progeny broilers tended to increase with the dietary Thr concentration (quadratic, P = 0.08). Thus, dietary supplementation with Thr had positive effects on the laying production by breeder hens and offspring performance, and it also regulated the expression levels of genes related to amino acid transportation and protein deposition. The optimal dietary Thr concentration that maximized the laying rate in yellow-feathered chicken breeders aged 197 to 266 D was 0.68% according to quadratic regression analysis.

Jejunum

Uterine horns

10.3382/ps/pez420

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Modelling Methionine Requirements of Fast- and Slow-Growing Chinese Yellow-Feathered Chickens during the Starter Phase

Animals (2020)

Long Li Khaled Abouelezz Zhonggang Cheng A. E. G. Gad-Elkareem Qiuli Fan

Two experiments were carried out to investigate the dietary methionine requirement for fast and slow-growing Chinese yellow-feathered breeds during the starter phase, based on growth variables and regression models. In Experiment 1, a total of 2880 one-day-old Lingnan chicks (fast growing breed) were used to test the methionine requirement from 1 to 21 days of age for males and females separately. Of each gender, 1440 birds were allocated into 6 dietary methionine levels (0.28%, 0.32%, 0.37%, 0.43%, 0.50% and 0.63%), each with 6 pen replicates of 40 chicks. Experiment 2 had the same design with Guangxi chicks (slow growing breed) from 1 to 30 d of age. Results indicated that significant nonlinear or quadratic responses to increasing dietary methionine levels were observed in body weight, daily gain, feed intake and feed conversion ratio of both breeds. In summary, the quadratic polynomial regression showed that the optimal methionine requirements for maximal growth performance of Lingnan chickens were 0.52-0.58% in males, 0.51% in females, and 0.53% in mixed genders. The corresponding values for Guangxi breed were 0.53% in males by quadratic polynomial regression and 0.43% in females, and 0.48% to 0.49% in mixed sexes by exponential asymptotic models.

Starter

10.3390/ani10030443

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Effect of Soybean Isoflavones on Growth Performance, Immune Function, and Viral Protein 5 mRNA Expression in Broiler Chickens Challenged with Infectious Bursal Disease Virus

Animals (2019)

Mahmoud M. Azzam Shouqun Jiang Jia-li CHEN Xiajing Lin Zhongyong Gou

A total of 200 one-day-old male broilers were assigned to five groups, and each group consisted of four replicates with 10 birds per replicate. Chicks were fed the basal diet with 0 (non-infected control), 0 (infected control), 10, 20, and 40 mg/kg soybean isoflavones (SI) for 42 days. At 21 days of age, chickens were inoculated with an infectious bursal dose (causing 50% morbidity) of the infectious bursal disease virus (IBDV) BC 6/85 strain by the eye-drop and nasal route (except for the non-infected group). Average daily gain (ADG) and average daily feed intake (ADFI) decreased (p < 0.05) in broilers infected with infectious bursal disease virus (IBDV) from 22 to 42 days. However, infected broilers fed 10 and 20 mg SI/kg had the maximum (p <0.05) ADG and ADFI from 1 to 42 days. Body weight (BW) increased (p < 0.05) in infected broilers fed the 10 and 20 mg SI /kg diet. The bursa weight at 7 days post-infection (dpi) was increased (p < 0.05) by the supplemental 10 mg SI/kg diet. Infected broilers showed the highest (p < 0.05) bursa lesions, with an average score of 4.0 ± 0.0, while the severity of bursa lesions was decreased (p < 0.05) at 3 dpi and 7 dpi by the supplemental 20 mg SI/kg diet. Supplemental SI at 20 mg/kg decreased (p < 0.05) the viral protein 5 (VP5) mRNA expression at 3 dpi and 7 dpi. The level of interferon gamma (IFNγ) was elevated (p < 0.05) in the infected group at 3 dpi and 7 dpi as compared with the control group, while its level was decreased (p < 0.05) by supplemental 10 mg/kg SI at 3 dpi. The level of nuclear factor κB in the bursal tissue showed the lowest value (p < 0.05) with supplemental 10 and 20 mg SI/kg diet at 7 dpi. Supplemental 10, 20, 40 mg/kg SI improved (p < 0.05) the serum total antioxidant activity (T-AOC) in infected broilers at 3 dpi. In addition, the serum level of malondialdehyde (MDA) decreased (p < 0.05) in the group fed 20 mg/kg SI at 7 dpi. In conclusion, supplemental 10~20 mg/kg SI may have a positive effect on broiler chickens infected with IBDV, probably because SI decrease the severity of bursa lesions and viral protein 5 mRNA expression, and have strong antioxidant activity.

Infectious bursal disease

10.3390/ani9050247

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Dietary Metabolizable Energy Responses in Yellow-Feathered Broiler Chickens from 29 to 56 d

The Journal of Applied Poultry Research (2019)

HebatAllah Kasem El‐Senousey Weiwei Wang Yibing Wang Qiuli Fan Ahmed M. Fouad

In this study, the metabolizable energy (ME) requirements were determined for Chinese yellow-feathered chickens aged from 29 to 56 d. In total, 1,200 29-d-old male yellow-feathered broilers were randomly assigned to 5 dietary treatments with 6 replicates each of 40 birds. Birds were fed 5 levels of dietary ME (2,799, 2,897, 2,997, 3,098, and 3,198 kcal ME/kg diet). Broilers that received high-energy diets had a higher (P < 0.05) final body weight, average daily gain (ADG), and average daily ME intake, and a lower (P < 0.05) feed conversion ratio (FCR) compared with those fed reduced energy diets. Increasing the dietary energy level had no significant influence on the carcass traits (P > 0.05), whereas the abdominal fat percentage and thigh intramuscular fat percentage increased significantly. The retention of energy and protein increased (P < 0.05) as the dietary energy concentration increased. Increasing the dietary energy level had no significant effect (P > 0.05) on the energy, protein, and fat contents in the whole body. The plasma concentrations of total cholesterol and total triglyceride were not (P > 0.05) affected by the dietary energy concentration but the plasma concentration of uric acid increased significantly. According to broken-line regression analysis, the recommended dietary ME levels that maximized ADG, optimized FCR, and minimized the deposition of abdominal fat (%) in yellow-feathered broiler chickens aged from 29 to 56 d were 3,198 kcal, 3,213 kcal, and 2,920 kcal ME/kg, respectively.

Abdominal fat

10.3382/japr/pfz059

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The Dynamics of Body Amino Acids Deposition in Yellow-Feathered Broilers

SSRN Electronic Journal (2022)

Sai Zhang Zongyong Jiang Zhongyong Gou Long Li Shenli Mao

Dynamic body amino acid (AA) deposition is the prerequisite for development of AA requirement according to factorial method. However, patterns of body AA in yellow-feathered broilers remain largely unknown. This study aims to establish non-linear growth model for dynamic body AA deposition and to identify effects due to gender difference. A total of 840 yellow-feathered broiler chickens at day 1 were equally allotted into 2 gender groups, and were fed for 120-d. Body weight was measured and comparative slaughter method was performed every 10 days. Non-linear regression (NLS) was applied to fit the dynamic body AA deposition, and superior model was chosen for further analysis. Results showed that the Gompertz model was superior. Maximum daily AA deposition (mg/d) reached between day 50~60, and was found in sorting order for male and female broilers that Leu (444 vs. 457), Val (318 vs. 325), Lys (304 vs. 295), Thr (248 vs. 249), Ile (241 vs. 263), Phe (223 vs. 224), Tyr (199 vs. 204), Cys (168 vs. 177), Met (84 vs. 78), Trp (46 vs. 44). To conclude, the Gompertz model was the superior non-linear model to fit dynamic body AA deposition. The inflection of daily deposition rate occurred around day 50~60. Male broilers deposited body AA faster than female except Cys, probably owing to differential feather development. Regardless gender, the AA ratios to Lys (%) for Thr, branched chain AA and aromatic AA increased as broilers grew, while relative Met or Trp to Lys (%) remained. The ratio of Cys: Lys (%) increased in female broilers, but declined in male counterparts during growth. Importantly, The allometric relationship was innovatively applied to interpret dynamics of AA profile, providing powerful tools in future study. In short, this study are the premise to develop factorial AA requirement model in future.

Deposition

Dynamics

10.2139/ssrn.4274769

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