Article
Agriculture, Dairy & Animal Science
Marcin Wegner, Dariusz Kokoszynski, Krzysztof Krajewski, Adrian Zurek
Summary: The aim of this study was to compare the effect of two different vaccination programs against IBV and aMPV on various factors. The findings showed that the vaccination program had a significant impact on body weight, proportion of carcass parts, and the percentage of selected internal organs in body weight.
Article
Agronomy
Anna Milczarek, Magdalena Pachnik, Maria Osek, Renata Swinarska
Summary: This study evaluated the effects of different percentages of guar meal in feed rations on the rearing performance and carcass composition of broiler chickens. The results showed that a higher percentage of guar meal had a negative impact on the chickens' weight gain and feed intake. Additionally, chickens fed with higher percentages of guar meal had a higher feed conversion rate. Furthermore, their meat was classified as DFD and contained a lower amount of intramuscular fat.
Article
Agriculture, Dairy & Animal Science
S. L. Weimer, S. Zuelly, M. Davis, D. M. Karcher, M. A. Erasmus
Summary: This study evaluated the carcass composition and meat quality of conventional (CONV) broilers and slower growing (SG) broilers at different stocking densities. The results showed that the strain of broilers had a greater impact on meat quality than stocking density. Compared to CONV broilers, the meat quality of SG broilers was more affected by stocking density in this study.
Article
Agriculture, Dairy & Animal Science
M. Singh, A. J. Lim, W. I. Muir, P. J. Groves
Summary: This study compared a novel crossbred slow-growing broiler breed with a conventional fast-growing broiler to assess their suitability as an alternative for chicken meat production in Australia. The crossbred reached the target weight later than the fast-growing broiler, but displayed longer latency-to-lie, higher thigh, drumstick, and wing yields, as well as darker and redder meat. The fast-growing broiler outperformed in feed conversion efficiency, antibody production, apparent metabolizable energy, breast yield, and meat drip loss, suggesting that the crossbred is a suitable candidate for a slow-growing alternative in Australia.
Article
Agriculture, Multidisciplinary
Lei Xie, Jiang-tao Qin, Lin Rao, Deng-shuai Cui, Xi Tang, Shi-jun Xiao, Zhi-yan Zhang, Lu-sheng Huang
Summary: Pork cutting is crucial and the research findings show that carcass weight, sex, and breed composition have significant effects on the weight and proportion of meat cuts. The study also reveals correlations between meat cuts, carcass traits, and meat quality traits. The results provide important insights for breeding pig carcass cuts and composition.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2023)
Article
Agriculture, Dairy & Animal Science
Carlos B. Rabello, Manuel J. Costa, Wedson C. L. Nogueira, Jose Guilherme Barbosa, Juan Carlos Rios-Alva, Craig L. Wyatt, Tara W. York, Martina P. Serrano, Edgar Orlando Oviedo-Rondon
Summary: This experiment evaluated the interactive effects of xylanase, amino acid density, and additional fat on the growth performance, energy utilization, and digestibility of broilers. The results showed that different combinations of additives may have significant effects on broiler growth, but dietary amino acid density and additional fat did not markedly influence the response to xylanase in maize-based diets.
Article
Agriculture, Dairy & Animal Science
Reza Barekatain, Luis F. Romero, Jose Otavio B. Sorbara, Aaron J. Cowieson
Summary: Adjusting the ratio of amino acids to ME has an impact on body weight gain and feed conversion rate in broiler chickens, indicating the potential of balanced nutrient density in optimizing growth performance.
Article
Food Science & Technology
Santosh Haunshi, Suresh Devatkal, Lawrence Leslie Leo Prince, Rajkumar Ullengala, Kannaki Ramasamy, Rudranath Chatterjee
Summary: This study compared the carcass and meat quality traits of the Kadaknath chicken breed with commercial broilers. The Kadaknath had lower carcass and breast yields, but higher leg, wing, back, and neck yields compared to broilers. The meat of the Kadaknath was darker and more yellow in color, had a lower pH decline, and higher protein content, and lower fat, moisture, and ash content than broilers. Additionally, Kadaknath meat had a richer amino acid composition, including those associated with sweet and umami taste. Both genotypes were similar in meeting the daily requirements of indispensable amino acids for adult humans.
Article
Agriculture, Dairy & Animal Science
J. P. Wu, R. Zhou, L. S. Liu, D. P. Casper, X. Lang, C. L. Wang, L. P. Zhang, S. Wei, H. B. Liu
Summary: Feeding a blend of oregano essential oils and Co lactate could improve lamb growth and carcass performance, resulting in greater body weight, average daily gains, feed conversions, and carcass weights. Plasma triglyceride and cholesterol concentrations were lower for lambs fed the blend, while albumin, total serum protein, and glucose concentrations were greater, indicating improved immunity and overall health.
Article
Infectious Diseases
Marhaba Ahmat, Junhao Cheng, Zaheer Abbas, Qiang Cheng, Zhen Fan, Baseer Ahmad, Min Hou, Ghenijan Osman, Henan Guo, Junyong Wang, Rijun Zhang
Summary: The study found that Bacillus amyloliquefaciens LFB112 supplementation significantly improved the growth performance, carcass traits, immunity, and blood chemical indices of broiler chickens, indicating its potential as an efficient broiler feed supplement.
Article
Agriculture, Dairy & Animal Science
Hani H. Al-Baadani, Rashed A. Alhotan, Mahmoud M. Azzam
Summary: The present study investigated the effects of gum arabic as a prebiotic and different stocking densities on broiler chickens. The results showed that gum arabic improved the growth performance and intestinal morphology of the chickens, while high stocking density negatively affected their performance, blood indices, carcass characteristics, and intestinal morphology.
Article
Agriculture, Dairy & Animal Science
Munyadziwa Felicia Dorcus Nemauluma, Tlou Grace Manyelo, Jones Wilfred Ng'ambi, Sekobane Daniel Kolobe, Emmanuel Malematja
Summary: This study aimed to determine the effect of bee pollen inclusion in broiler chicks' diets. The results showed that bee pollen inclusion had a positive impact on body weight, weight gain, and feed conversion ratio. However, it did not affect nutrient digestibility and metabolizable energy. Furthermore, bee pollen inclusion improved carcass yield. Therefore, adding 12 g/kg or more of bee pollen in starter diets can have positive effects on broiler chicks' growth performance and carcass yield.
Article
Agriculture, Dairy & Animal Science
Javier Herrero-Encinas, Almudena Huerta, Marta Blanch, Jose Javier Pastor, Sofia Morais, David Menoyo
Summary: This study explored the mechanism of action of a mixture of extracts containing capsaicin, black pepper, and ginger, which showed positive effects on broiler chicken growth performance. The results showed an enhancement of growth parameters, improved nutrient digestibility, and effects on antioxidant enzyme activity. In conclusion, the inclusion of this mixture in broiler diets improved growth performance and positively affected nutrient digestibility and antioxidant response.
Article
Agriculture, Dairy & Animal Science
Kobe Buyse, Evelyne Delezie, Luc Goethals, Noemie Van Noten, Richard Ducatelle, Geert P. J. Janssens, Marta Lourenco
Summary: Chestnut tannins negatively impacted broiler performance at higher doses, but positively influenced meat quality, intestinal growth, and antioxidative status in various diets.
Article
Agriculture, Dairy & Animal Science
F. O. Marx, A. Massuquetto, L. S. Bassi, E. L. Krabbe, C. Rocha, S. G. Oliveira, A. Maiorka
Summary: The experiment investigated the effects of different particle sizes of soybean meal (SBM) in diets on digestible energy, nutrient digestibility, and growth performance of broiler chickens. It was found that larger SBM particles result in similar crude protein digestibility and digestible energy but improved weight gain and feed conversion ratio compared to smaller particles. Feed intake was linearly reduced with increasing SBM particle size, and carcass yield was not influenced.
Article
Biotechnology & Applied Microbiology
Xiaodong Tan, Ranran Liu, Yonghong Zhang, Xicai Wang, Jie Wang, Hailong Wang, Guiping Zhao, Maiqing Zheng, Jie Wen
Summary: In chickens with FLHS, a genome-wide dysregulated DNA methylation pattern was found, with hypo-methylated regions up- and down-stream of gene body. Genes related to lipogenesis and oxygenolysis showed up-regulated expression associated with down-regulated DNA methylation, while genes related to cellular junction and communication pathways exhibited inhibition with associated up-regulation of DNA methylation. These findings suggest that increased lipid accumulation and hepatocyte rupture are central pathways regulated by DNA methylation in FLHS chickens.
Article
Agriculture, Dairy & Animal Science
Mohamed Shafey Elsharkawy, Ying Chen, Ranran Liu, Xiaodong Tan, Wei Li, Ibrahim El-Wardany, Dongqin Zhao, Maiqing Zheng, Jie Wen, Guiping Zhao
Summary: The study shows that paternal dietary supplementation with 0.1% methionine can enhance offspring carcass traits and meat quality, such as increasing thigh muscle yield, reducing abdominal fat, and affecting meat quality indicators like pH value and color. Genes associated with meat quality also support these results. The findings suggest that the addition of 0.1% methionine to rooster diets can improve the carcass characteristics and meat quality of progeny.
Article
Chemistry, Applied
Yuxi Jin, Huanxian Cui, Xiaoya Yuan, Lu Liu, Xiaojing Liu, Yongli Wang, Jiqiang Ding, Hai Xiang, Xinxiao Zhang, Jianfeng Liu, Hua Li, Guiping Zhao, Jie Wen
Summary: The study analyzed the volatile organic compounds in chicken meat from 972 Chinese local chickens and identified various VOCs belonging to aldehyde, alcohol, and alkane classes. The breeds with the highest total aldehyde content were negatively correlated with the content of the other two classes, and their flavor could be distinguished by E-nose. Additionally, 9 common VOCs were shared by different breeds, and principal component analysis identified hexanal and 1-octen-3-ol as the major VOCs in each breed based on different criteria.
Article
Genetics & Heredity
Xiaodong Tan, Lu Liu, Xiaojing Liu, Huanxian Cui, Ranran Liu, Guiping Zhao, Jie Wen
Summary: This study investigated the genetic architecture and key variants associated with breast muscle weight (BrW) in Jingxing yellow chickens. The researchers identified high-impact single nucleotide polymorphisms (SNPs) and muscle-related genes through genome-wide association study and integrated analysis. They also discovered a major haplotype and a crucial gene, IGF2BP1, associated with BrW.
Article
Genetics & Heredity
Yuxi Jin, Xiaoya Yuan, Wenjuan Zhao, Hua Li, Guiping Zhao, Jianfeng Liu
Summary: This study identifies key genes and pathways related to the formation of hexanal using gene expression analysis and co-expression network analysis. The results show that differentially expressed genes and hub genes are enriched in various signaling pathways, including the PPAR signaling pathway and the MAPK signaling pathway. These findings are important for understanding and further researching genes related to hexanal content.
Article
Genetics & Heredity
Jiahong Sun, Xiaodong Tan, Xinting Yang, Lu Bai, Fuli Kong, Guiping Zhao, Jie Wen, Ranran Liu
Summary: This study identifies candidate genes associated with chicken meat color by comparing fast-growing, white-feathered chickens and slow-growing, yellow-feathered chickens. The findings contribute to the understanding of the molecular mechanisms regulating meat color and the development of molecular markers for chicken meat color selection.
Article
Agriculture, Dairy & Animal Science
Mamadou Thiam, Astrid Lissette Barreto Sanchez, Jin Zhang, Maiqing Zheng, Jie Wen, Guiping Zhao, Qiao Wang
Summary: The H/L ratio is associated with intestinal immunity and could be a potential resistance indicator in chickens, with individuals displaying enhanced intestinal barrier function and immunity when having a low H/L ratio. The study suggests that selecting poultry with a low H/L ratio may improve survival, immune response, and resistance to Salmonella infection.
Article
Microbiology
Mamadou Thiam, Astrid Lissette Barreto Sanchez, Jin Zhang, Jie Wen, Guiping Zhao, Qiao Wang
Summary: This study revealed the association between H/L ratio and Salmonella resistance, and proposed a method for selecting and breeding Salmonella-resistant chickens.
Article
Agriculture, Dairy & Animal Science
Zhengxiao He, Sen Li, Wei Li, Jiqiang Ding, Maiqing Zheng, Qinghe Li, Alan G. Fahey, Jie Wen, Ranran Liu, Guiping Zhao
Summary: This study compared the GBLUP model and GA-BLUP model with previously identified associated SNPs. The GA-BLUP model with nine RFI-associated SNPs showed improved prediction accuracy compared to the GBLUP model.
Article
Biotechnology & Applied Microbiology
Na Luo, Jingting Shu, Xiaoya Yuan, Yuxi Jin, Huanxian Cui, Guiping Zhao, Jie Wen
Summary: By studying the deposition of IMF and AF in chicken meat, the study revealed the regulatory mechanisms of crucial genes and signaling pathways in their deposition, providing a theoretical basis for producing high-quality broilers.
Article
Agriculture, Dairy & Animal Science
Xiaodong Tan, Ranran Liu, Wei Li, Maiqing Zheng, Dan Zhu, Dawei Liu, Furong Feng, Qinghe Li, Li Liu, Jie Wen, Guiping Zhao
Summary: This study demonstrates the effective use of genomic selection (GS) for improvements in body weight and meat production in a chicken line. The study also identifies genomic regions and genes that are influenced by intensive genetic selection.
Article
Genetics & Heredity
Astrid Lissette Barreto Sanchez, Qiao Wang, Mamadou Thiam, Zixuan Wang, Jin Zhang, Qi Zhang, Na Zhang, Qinghe Li, Jie Wen, Guiping Zhao
Summary: This study evaluated the heat tolerance and identified potential driver and hub genes related to heat stress in native and commercial chicken breeds through phenotypical, physiological, liver transcriptome comparative analysis and WGCNA. The results showed that native chickens were less affected by heat stress and had fewer differentially expressed genes (DEGs) related to metabolism activity, while commercial chickens had pathways related to inflammatory reactions. CPT1A and ANGPTL4 were identified as candidate genes associated with heat stress in native chickens, while HSP90B1 and HSPA5 were identified in commercial chickens. TLR7, AR, and BAG3 genes were revealed as hub genes playing an important role in heat stress.
Article
Agriculture, Dairy & Animal Science
Jiqiang Ding, Fan Ying, Qinghe Li, Gaomeng Zhang, Jin Zhang, Ranran Liu, Maiqing Zheng, Jie Wen, Guiping Zhao
Summary: Genetic analyses on 11,279 chickens from seven material lines identified a genomic region associated with egg number in meat-type chickens, as well as 29 SNPs and 9 candidate genes potentially affecting egg production traits.
JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Qiao Wang, Jin Zhang, Hailong Wang, Zixuan Wang, Qinghe Li, Guiping Zhao, Maiqing Zheng, Jie Wen
Summary: Runs of homozygosity (ROHs) are effective for assessing inbreeding and detecting selection in livestock populations. This study investigated the occurrence and distribution of ROHs, compared genomic inbreeding coefficients, and identified genomic regions with high ROH frequencies in different Beijing-You chicken populations. The findings contribute to understanding genetic diversity and population demography.
Article
Agriculture, Dairy & Animal Science
G. M. Zhang, P. H. Liu, L. Chen, J. M. Zheng, G. P. Zhao, W. H. Xing, J. Wen, Q. H. Li
Summary: Researchers identified genome-wide significant markers on chromosome 7 related to semen volume in white-feathered broilers, and four candidate genes (FAPP1, OSBPL6, SESTD1, and SSFA2) potentially involved in semen volume were identified. These findings may contribute to further research on the genetic mechanism and marker-assisted selection of semen volume in white-feathered broilers.
Article
Agriculture, Dairy & Animal Science
Jesper Tessin, Judith Rohde, Arne Jung, Nicole Kemper, Jochen Schulz
Summary: In this study, samples from poultry house environment and culled birds were collected, and E. cecorum was successfully isolated. The principle of isolating the pathogen by streaking on a chromogenic agar may motivate researchers to investigate transmission routes and optimize biosecurity measures.
Article
Agriculture, Dairy & Animal Science
Junqin Zhang, Zimin Xie, Yanlin Pan, Zuoxin Chen, Yunzhen Huang, Linlin Li, Jiawen Dong, Yong Xiang, Qi Zhai, Minhua Sun, Xingying Li, Shujian Huang, Ming Liao
Summary: In recent years, there has been an increase in the occurrence of fowl adenovirus 2 (FAdV-2) in China, posing a significant threat to the poultry industry. This study investigated the epidemiology, phylogenetic relationship, genomic characteristics, and pathogenicity of FAdV-2. The results showed that FAdV-2 was the most commonly detected serotype among various FAdV serotypes. Genetic analysis revealed that these FAdV-2 strains formed a distinct branch within the FAdV-D group and had a high nucleotide similarity with reference strains. Recombination analysis identified recombination events between FAdV-2 and FAdV-11 in some strains. Pathogenicity experiments demonstrated that a recombinant FAdV-2 strain caused a high mortality rate and more severe disease in chickens. These findings contribute to our understanding of FAdV-2 and provide a basis for vaccine development.
Article
Agriculture, Dairy & Animal Science
Ebtsam Iraqi, Ali Abdel Hady, Nadia Elsayed, Hanaa Khalil, Amina El-Saadany, Karim El-Sabrout
Summary: Thermal manipulation during egg incubation, particularly at 12 to 18 days, has positive effects on embryonic development, hatching characteristics, chick quality, as well as posthatch thermotolerance and performance.
Article
Agriculture, Dairy & Animal Science
Yong Liu, Mingxin Song, He Bai, Chunhua Wang, Fei Wang, Qi Yuan
Summary: Dietary curcumin supplementation can significantly improve egg quality of quails in the late laying period, primarily by improving lipid metabolism and selectively regulating the intestinal microbial community.
Article
Agriculture, Dairy & Animal Science
Lei Zhang, Zhixuan Song, Peiyao Li, Xingju Song, Xinming Tang, Dandan Hu
Summary: This study evaluated the vaccine potential of recombinant proteins for avian coccidiosis caused by Eimeria. The results showed that the rEten5-B protein can trigger immune protection against E. tenella and may be a potential and effective subunit vaccine for the control of coccidiosis in poultry.
Article
Agriculture, Dairy & Animal Science
Milan Kumar Sharma, Amit Kumar Singh, Doyun Goo, Venkata Sesha Reddy Choppa, Hanseo Ko, Hanyi Shi, Woo Kyun Kim
Summary: The study investigates the effect of Eimeria infection on gastrointestinal physiology, growth performance, and egg production of Hy-Line W-36 laying hens during peak production. Results show that Eimeria infection negatively affects body weight, feed intake, immune response, and nutrient transporter gene expression. Egg production temporarily ceases in hens infected with high and medium-high dosages of Eimeria.
Article
Agriculture, Dairy & Animal Science
Elwy A. Ashour, Mahmoud Kamal, Hayman A. A. Altaie, Ayman A. Swelum, Gamaleldin M. Suliman, Guillermo Tellez-Isaias, Mohamed E. Abd El-Hack
Summary: This study evaluated the effects of CP and ME on the performance and nutritional value of Japanese quail lay chicken. The results showed that protein and energy levels significantly influenced all productive outcomes except feed conversion ratio. The combination of dietary energy and protein levels had a substantial effect on all egg quality trials evaluated. It is recommended to feed layer Japanese quail between the ages of 8 and 20 weeks during the summer with a dietary energy content of 2,900 kcal ME/kg and 20% CP.
Article
Agriculture, Dairy & Animal Science
J. E. Doornweerd, R. F. Veerkamp, B. de Klerk, M. van der Sluis, A. C. Bouwman, E. D. Ellen, G. Kootstra
Summary: Tracking group-housed individual broilers using video can provide valuable information on their health, welfare, and performance. This study conducted a comprehensive analysis on broiler tracking on video and potential tracking errors, highlighting the potential and challenges of phenotyping broiler locomotion. The results emphasized the importance of addressing tracking errors, potential algorithm improvements, and the need for an external animal identification system for efficient locomotion phenotyping.
Article
Agriculture, Dairy & Animal Science
Jiayu Wu, Yanan Wang, Yu An, Changyu Tian, Lingfeng Wang, Zuhong Liu, Desheng Qi
Summary: This study compared the gene expression differences in liver tissues of laying hens at different ages using RNA sequencing, and found that the transport and metabolism of amino acids changed during the growing period, which influenced the growth and development of the hens.
Article
Agriculture, Dairy & Animal Science
J. Raabe, G. Raveendran, W. Otten, K. Homeyer, T. Bartels
Summary: This study investigated the effects of different flicker frequencies on the behavior, performance, and stress response in male turkeys. The results showed that flicker frequencies of 165 Hz or higher had no detrimental effect on growth performance, injurious pecking, or endocrine stress response in the turkeys.
Article
Agriculture, Dairy & Animal Science
Adamu Mani Isa, Yanyan Sun, Yuanmei Wang, Yunlei Li, Jingwei Yuan, Aixin Ni, Hui Ma, Lei Shi, Hailai Hagos Tesfay, Yunhe Zong, Panlin Wang, Pingzhuang Ge, Jilan Chen
Summary: This study sequenced mRNAs and lncRNAs in the ovary stroma of specific chicken breeds and their reciprocal crossbreds to understand the molecular mechanism of heterosis for egg production. Results showed that genes with nonadditive expression were related to follicle growth and atresia as well as oxidative stress in the crossbred hens.
Article
Agriculture, Dairy & Animal Science
Zhepeng Wang, Qiu Chen, Yiwei Wang, Yulu Wang, Ruifang Liu
Summary: The study investigates the functional variants associated with chicken eggshell color in the SLCO1B3 gene by measuring the eggshell color of Lueyang black-boned chickens and analyzing the genetic data. It identifies 15 variants in SLCO1B3 that are significantly associated with eggshell color. However, the functional analysis shows that one specific variant, 1B3_SNP108, does not have a significant effect on promoter activity. This study highlights the importance of SLCO1B3 and its variants in breeding eggshell color.
Article
Agriculture, Dairy & Animal Science
P. Yin, Q. Tong, B. M. Li, W. C. Zheng, Y. Wang, H. Q. Peng, X. L. Xue, S. Q. Wei
Summary: This study investigated the welfare and health of laying hens in a multitier system. The results showed that the spatial distribution of hens changed with increasing age, and lower-ranking hens preferred to stay in lower tiers to avoid competition but still had access to resources. This improved the welfare and health of the hens near the end of the laying cycle.
Article
Agriculture, Dairy & Animal Science
Wenwen Liang, Siqiong Jie, Yiqin Wang, Xiaowei Wen, Yanling Xiong, Xiaoxi Lin, Zhengrong Lv
Summary: This study examined the effect of risk perceptions on preventive behavior among vendors in the live poultry wholesale market and the live poultry retail market in Guangdong Province using the health belief model and structural equation modeling. The results showed that perceived severity and perceived benefits positively influenced vendors' self-efficacy in the wholesale market, while perceived barriers negatively affected self-efficacy in both the wholesale and retail markets. Moreover, cues to action mediated the relationship between perceived severity, perceived benefits, and self-efficacy, and also mediated the effect of perceived susceptibility among wholesale market vendors.
Article
Agriculture, Dairy & Animal Science
Shreeya Sharma, Raveendra R. Kulkarni, Shayan Sharif, Hosni Hassan, Mohammadali Alizadeh, Scott Pratt, Khaled Abdelaziz
Summary: The study investigates the impact of exposing chick embryos to antigens via in ovo delivery of poultry-specific lactobacilli on the expression of genes associated with early bursal development and maturation. Results indicate that the supplementation of poultry-specific lactobacilli to chick embryos can accelerate the development and immunological maturation of the bursa of Fabricius.