British Poultry Science最新文献_第7页

Are slow-growing broiler chickens actually better for animal welfare? Shining light on a poultry welfare concern using a farm-scale economic model. 生长缓慢的肉鸡真的更有利于动物福利吗？用农场规模的经济模式来关注家禽福利问题。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-01-06 DOI: 10.1080/00071668.2024.2432926

I Khire, R Ryba

{"title":"Are slow-growing broiler chickens actually better for animal welfare? Shining light on a poultry welfare concern using a farm-scale economic model.","authors":"I Khire, R Ryba","doi":"10.1080/00071668.2024.2432926","DOIUrl":"https://doi.org/10.1080/00071668.2024.2432926","url":null,"abstract":"1. It remains unclear whether slow-growing broilers actually represent an overall animal welfare improvement - a major knowledge gap for policymakers and animal welfare NGOs. This paper addresses this knowledge gap by using an economic model to produce an all-things-considered estimate of the welfare effects of slow-growing genotypes. A quantitative end-point welfare metric that accounts for welfare challenges throughout the production cycle used the Pain-Track method from the Cumulative Pain Framework.2. Longer lifespans of slow-growing broilers (relative to fast-growing broilers) typically caused an increase in the time spent in low-intensity negative affective states. However, despite the additional broilers being farmed and their longer growth period, switching to slow-growing genotypes caused a decrease in higher-intensity negative affective states - a major win for welfare.3. These results can be used to alleviate consumer and producer concerns that any transition causes a welfare risk and provide an optimistic understanding of the overall welfare impact of transitioning to slow-growing broilers.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Avian pathogenic Escherichia coli alters complement gene expression in chicken erythrocytes. 禽致病性大肠杆菌改变鸡红细胞补体基因表达。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-01-06 DOI: 10.1080/00071668.2024.2435618

G L Liu, M L Qiao, H C Zhang, C H Xie, X Y Cao, J Zhou, J Yu, R H Nie, Z X Meng, R Q Song, Y Wang, J L Ren, Y J Zhao, J Q Sun, R W Fan, G J Shang, S Niu, W X Tian

{"title":"Avian pathogenic Escherichia coli alters complement gene expression in chicken erythrocytes.","authors":"G L Liu, M L Qiao, H C Zhang, C H Xie, X Y Cao, J Zhou, J Yu, R H Nie, Z X Meng, R Q Song, Y Wang, J L Ren, Y J Zhao, J Q Sun, R W Fan, G J Shang, S Niu, W X Tian","doi":"10.1080/00071668.2024.2435618","DOIUrl":"https://doi.org/10.1080/00071668.2024.2435618","url":null,"abstract":"1. Avian Escherichia coli (E. coli) causes significant losses in livestock by inducing morbidity and mortality. Erythrocytes, the most abundant in blood, possess dual functions of oxygen transportation and immune regulation. In recent years, the interaction between erythrocytes and the complement system has gradually become a focal point of study. However, the transcription dynamics of the complement system in chicken erythrocytes post-E. coli invasion remains unclear.2. In this study, chicken erythrocytes and E. coli were co-cultured for 0.25-2 h to assess adhesion, analysed by indirect immunofluorescence (IIF) and scanning electron microscopy (SEM). Quantitative real-time PCR (qRT-PCR) examined differential expression of complement genes (CD93, C1q, C1s, C2, C3, C3AR1, C4, C4A, C5, C5AR1, C6, C7, C8G, CFI, MBL) in vitro using erythrocytes at 0.25-2 h and in vivo using chicks at 1, 3 and 7 d post-E. coli infection.3. E. coli adheres to chicken erythrocytes, as observed using IF and SEM. Gene expression analysis revealed early downregulation of C4, C4A, MBL and late upregulation of CD93, C1q, C1s, C3, C3AR1, C5AR1, C6, with C5, C7, C8G downregulated at 7 dpi. C2 expression varied at each time point.4. This study first showed E. coli adhering to erythrocytes, which activated complement genes rapidly. In vivo recovery from chickens with colibacillosis favours classical pathway activation, while lectin pathway may be inhibited, suggesting early immune down-regulation.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of extended lairage periods on physio-metabolic status and meat quality in commercial broilers. 延长养期对商品肉鸡生理代谢状态和肉质的影响。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-02 DOI: 10.1080/00071668.2024.2430620

P M Bagade, A K Wankar, P M Kekan, S N Rindhe, K K Khose, P B Ghorpade, Manimaran S

{"title":"Impact of extended lairage periods on physio-metabolic status and meat quality in commercial broilers.","authors":"P M Bagade, A K Wankar, P M Kekan, S N Rindhe, K K Khose, P B Ghorpade, Manimaran S","doi":"10.1080/00071668.2024.2430620","DOIUrl":"https://doi.org/10.1080/00071668.2024.2430620","url":null,"abstract":"1. This study investigated the impact of different lairage duration on physiology, metabolism and meat quality in commercial broilers.2. A total of sixty, one-d-old Vencobb broilers were reared until 42 d of age and subjected to five lairage treatments (T0-T5), with the control with no lairage and then each timepoint increasing by 2 h.3. Head, eye and feet temperature increased progressively (P˂0.05), from 21 to 42 d. During lairage, temperature for the head, eye and feet were significantly higher in birds held until T3-T4 (P˂0.05), than at T0-T2 and T5 treatments.4. Serum total protein, creatinine, lipase and TBARS showed no variation due to lairage (p > 0.05). Glucose levels were highest at T4 (p < 0.05) than at T1-T3 or T5 and serum albumin increased only at T4 as compared to T5 (p < 0.05). Higher levels for blood triglycerides were recorded for T0, T1 and T5 (p < 0.05), than at T2-T4 and total blood antioxidants were significantly higher at T1 (p < 0.05), than at T0 and T2-T5 treatments, respectively.5. There was no significant difference for meat pH, ERV and WHC (p > 0.05), while, higher tyrosine levels (p < 0.05) were noted for birds in T5 than for the rest of the lairage treatments (T0-T4). On the same trend, TBA concentration was highest for birds in T5, as compared to T4 (p < 0.05).6. In conclusion, lairage over eight hours for commercial broilers is not recommended, as there are drastic changes in physiology, metabolism and deterioration of meat, reducing meat quality.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-7"},"PeriodicalIF":1.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142766392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of LED light spectra and photoperiods on performance, bone characteristics and related genes expression in broiler breeders. LED光谱和光周期对肉种鸡生产性能、骨骼特性及相关基因表达的影响

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-02 DOI: 10.1080/00071668.2024.2425627

N Nasirzadeh, M J Zamiri, A Akhlaghi, S Ghovvati, S Kargar, J Amini

{"title":"Influence of LED light spectra and photoperiods on performance, bone characteristics and related genes expression in broiler breeders.","authors":"N Nasirzadeh, M J Zamiri, A Akhlaghi, S Ghovvati, S Kargar, J Amini","doi":"10.1080/00071668.2024.2425627","DOIUrl":"https://doi.org/10.1080/00071668.2024.2425627","url":null,"abstract":"1. Lighting is a crucial environmental factor in poultry production. This study evaluated the effects of light-emitting diodes (LED) on performance and several bone characteristics, including bone mineralisation, morphometry, histology and selected gene expression in broiler breeders.2. A total of 800 one-d-old female broiler breeder chickens (Ross 308) were randomly allocated to one of 20 light-proof pens and reared under green (GL) or white (WL) LED light for two photophases (8 or 12 h) in a 2 × 2 factorial experiment and compared to a control group (incandescent lamp at 8 L:16D duration; CON). Weight gain, feed consumption and feed conversion ratio (FCR) were calculated. Femoral and tibial characteristics were measured.3. The LED colour affected feed intake during the rearing period, being higher for birds under white compared to green light. Tibial calcium (Ca) concentration in WL birds was lower than for green LED lighting regimens but not different from the CON group (p ≤ 0.05). Birds under 12 h lighting had greater tibia bone dry matter and trabecular separation (mm) than those in the 8 h groups. However, bone volume fraction and trabecular number per mm in 8 h birds were higher than in 12 h groups (p ≤ 0.01). There was greater expression of the osteocalcin gene under WL compared with CON. Osteopontin expression in WL8 was 4.63 times greater than in the CON group (p ≤ 0.05). The alkaline phosphatase gene expression in WL12 was higher than in the CON group (p ≤ 0.05).4. Exposure to white and green LED spectra enhanced bone gene expression and mineralisation, respectively, without adverse effects on bird performance. Thus, LED light may be beneficial to broiler breeder bone traits.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142766447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incidence of erysipelas in waterfowl in Poland - clinical and pathological investigations. 波兰水禽红斑病发病率--临床和病理调查。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-10-07 DOI: 10.1080/00071668.2024.2406331

T Nowak, K Wódz, P Kwieciński, A Kwieciński, M Dec

{"title":"Incidence of erysipelas in waterfowl in Poland - clinical and pathological investigations.","authors":"T Nowak, K Wódz, P Kwieciński, A Kwieciński, M Dec","doi":"10.1080/00071668.2024.2406331","DOIUrl":"10.1080/00071668.2024.2406331","url":null,"abstract":"1. Erysipelas in geese and ducks is an infectious disease causing considerable economic losses in the poultry sector in Poland. The aim of this study was to determine the distribution of erysipelas cases in age groups of geese and in periods of the calendar year and to assess macroscopic lesions in birds infected with Erysipelothrix rhusiopathiae.2. The study used 286 geese and 16 ducks delivered to the laboratory for diagnosis in the years 2019-2021. The birds came from 99 different farms. E. rhusiopathiae from clinical samples were cultured on Columbia blood agar and identified by real-time PCR. Pathological lesions were characterised during anatomopathological examination.3. Distribution of erysipelas cases in age groups of geese and periods of the calendar year differed significantly from the assumed even distribution. Most cases were noted in August and September in birds aged between 11 and 13 weeks. Necropsy of birds infected with E. rhusiopathiae showed anatomopathological lesions characteristic of generalised infection, affecting multiple organs.4. The uneven distribution of erysipelas cases in geese in different age groups and periods of the calendar year suggested that both the age of the birds and climatic conditions are predisposing factors for infection.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"762-768"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of lipopolysaccharides from pathogenic bacteria on broiler chickens' productivity: a meta-analysis. 病原菌脂多糖对肉鸡生产率的影响：一项荟萃分析。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-06-28 DOI: 10.1080/00071668.2024.2364331

H L Sanjaya, B P Maharani, A P Baskara, Muhlisin, R Martien, Zuprizal

{"title":"Effect of lipopolysaccharides from pathogenic bacteria on broiler chickens' productivity: a meta-analysis.","authors":"H L Sanjaya, B P Maharani, A P Baskara, Muhlisin, R Martien, Zuprizal","doi":"10.1080/00071668.2024.2364331","DOIUrl":"10.1080/00071668.2024.2364331","url":null,"abstract":"1. This meta-analysis investigated the impact of LPS and covariates (serotype, rearing period and administration route) on the productivity parameters of broiler chickens (average daily feed intake (ADFI), average daily gain (ADG) and feed conversion ratio (FCR)).2. Thirty-two eligible studies were included. Hedges' g effect size was determined using a random-effects model at 95% confidence interval.3. Results showed that LPS significantly decreased average daily feed intake (ADFI; p < 0.0001) and average daily gain (ADG; p < 0.0001) and increased FCR (p < 0.0001). The serotypes Escherichia coli 055: B5 (EC055: B5) and Escherichia coli 0127: B8 (EC 0127: B8) significantly reduced ADFI and ADG, and the serotype EC 055: B5 significantly increased the FCR (p < 0.05).4. The intraperitoneal administration of the LPS significantly reduced the productivity of broiler chickens (p < 0.05), but other administration routes did not show such effects. The reduction in ADFI and ADG was found in all rearing periods (p < 0.05), and the increase in FCR was observed in the starter (p = 0.0302) and grower periods (p = 0.0031).5. Exposure to LPS significantly reduced the productivity of broiler chickens (p < 0.05). However, no relationship was observed between LPS dosage and productivity as indicated by the meta-regression study.6. The findings indicated that LPS has detrimental effects on broiler chickens' ADFI, ADG and FCR across various LPS serotypes and rearing periods. These detrimental impacts of LPS remain consistent regardless of the administered dosage.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"708-721"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141466322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mapping genome-wide diversity and population dynamics in Indian chicken breeds for targeted conservation and breeding. 绘制印度鸡种的全基因组多样性和种群动态图，以便进行有针对性的保护和育种。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-08-30 DOI: 10.1080/00071668.2024.2379968

R Arora, H Kumar, U Sharma, S Ahlawat, R Sharma, P Chhabra, V Sankhyan, R K Vijh

{"title":"Mapping genome-wide diversity and population dynamics in Indian chicken breeds for targeted conservation and breeding.","authors":"R Arora, H Kumar, U Sharma, S Ahlawat, R Sharma, P Chhabra, V Sankhyan, R K Vijh","doi":"10.1080/00071668.2024.2379968","DOIUrl":"10.1080/00071668.2024.2379968","url":null,"abstract":"1. Genetic improvement and widespread use of artificial selection may have impacted the genetic make-up of Indian chicken breeds. The genetic architecture of contemporary chicken population of India needs to be assessed for future improvement and conservation programmes. This study utilised whole-genome sequences in 180 chicken samples from 16 indigenous breeds, along with the Red Jungle Fowl and the commercial White Leghorn.2. A panel of 76 978 genome-wide single-nucleotide polymorphisms (SNP) was selected for comparative genome analysis after stringent screening. Breeds originating from the eastern regions of India exhibited higher genomic diversity, indicative of a rich repository of distinct germplasm. Conversely, the Uttara breed, from the northern hilly areas, display considerable genetic differentiation with diminished diversity compared to others, underscoring conservation concerns. The average coefficient (FIS) of 0.084 caution the need to mitigate risks associated with inbreeding.3. The study revealed that the analysis of 76 978 genome-wide SNP will serve as a cornerstone in refining conservation strategies, to design interventions with greater precision.4. The contribution of Red Jungle Fowl to the gene pool of all native breeds was supported by this study. Genetic structuring indicated a relationship among breeds based on geographical proximity, underscored by varying levels of admixture.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"665-676"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The inhibition roles of RAB23 gene in granulosa cell proliferation and progesterone synthesis of hen ovarian prehierarchical follicles. RAB23基因对母鸡卵巢前层卵泡颗粒细胞增殖和孕酮合成的抑制作用

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-07-22 DOI: 10.1080/00071668.2024.2377748

D Zhang, H Wu, Y Wang, Z Xu, X Sun, S Liswaniso, N Qin, R Xu

{"title":"The inhibition roles of RAB23 gene in granulosa cell proliferation and progesterone synthesis of hen ovarian prehierarchical follicles.","authors":"D Zhang, H Wu, Y Wang, Z Xu, X Sun, S Liswaniso, N Qin, R Xu","doi":"10.1080/00071668.2024.2377748","DOIUrl":"10.1080/00071668.2024.2377748","url":null,"abstract":"1. The proliferation of granulosa cells is vital for the development and recruitment of hen ovarian prehierarchical follicles (PF). The RAB23 protein is a member of the Rab family, belonging to the GTPase family. This study studied the regulatory roles of the RAB23 gene in PF.2. The expression of RAB23 was significantly increased in granulosa cells (GC) during PF growth and was highest in GC at 6-8 mm diameter (p < 0.05). The RAB23 protein was mainly expressed in the GC, oocytes (OC) as well as somatic cells (SC) of the PF.3. The mRNA expression of FSHR, CCND1,CYP11A1, StAR and HSD3B1 was significantly increased in the siRNA RAB23 group (p < 0.05). Additionally, protein expression of FSHR, CCND1, CYP11A1, HSD3B1 was significantly increased (p < 0.05) after GC were transfected with RAB23-specific siRNA. Protein expression of StAR in the siRNA RAB23 group was numerically higher than that in the positive control (PC) and negative control (NC) groups. The GC proliferation rate and progesterone synthesis of the prehierarchical follicles in hen ovaries were markedly increased in vitro (p < 0.05).4.This study revealed that RAB23 might play an inhibitory role in GC proliferation and progesterone synthesis during the prehierarchical follicles development in vitro.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"690-698"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nutritional and technological potential of chicken feathers for the food industry. 鸡毛在食品工业中的营养和技术潜力。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-07-12 DOI: 10.1080/00071668.2024.2365859

M M F Santos, C V B Grisi, M S Madruga, F A P Silva

{"title":"Nutritional and technological potential of chicken feathers for the food industry.","authors":"M M F Santos, C V B Grisi, M S Madruga, F A P Silva","doi":"10.1080/00071668.2024.2365859","DOIUrl":"10.1080/00071668.2024.2365859","url":null,"abstract":"1. The production of chicken meat has resulted in high volumes of byproducts, such as feathers, bones, skin, viscera, and feet. The structure of feathers is one of the most complex among vertebrates, with a central axis and lateral filamentary structures, providing rigidity, lightness, and flexibility. Chicken feathers are composed of proteins, lipids, and water, with the highest protein content, especially keratin, which is responsible for the material's rigidity.2. Industries still make little use of feathers, which are generally intended for the production of flour or organic fertilisers. These are low added value products, and discarded feathers can harm the environment.3. Keratin extraction techniques and resulting protein hydrolysates have been studied in chicken feathers. Acid, alkaline or enzymatic hydrolysis is the most commonly used method for obtaining molecules with functional properties such as antioxidant, antimicrobial, antihypertensive and antidiabetic activity.4. The development of keratin-based biodegradable films represents an area of interest for reducing the economic and environmental impacts caused by inappropriate disposal of feathers.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"722-729"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141589709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increasing digesta viscosity altered nutrient transporter gene expression and decreased nutrient utilisation in Eimeria-challenged birds. 增加消化液粘度会改变营养物质转运体基因的表达，并降低感染艾美耳病的鸟类对营养物质的利用率。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2024-12-01 Epub Date: 2024-08-30 DOI: 10.1080/00071668.2024.2377276

E O Alagbe, P Jaynes, C S Park, O Adeola

{"title":"Increasing digesta viscosity altered nutrient transporter gene expression and decreased nutrient utilisation in Eimeria-challenged birds.","authors":"E O Alagbe, P Jaynes, C S Park, O Adeola","doi":"10.1080/00071668.2024.2377276","DOIUrl":"10.1080/00071668.2024.2377276","url":null,"abstract":"1. Two experiments were conducted, the first was to investigate the effect of increasing digesta viscosity by dietary carboxymethyl cellulose (CMC) on the growth performance and intestinal morphology and characteristics of healthy birds. The second experiment evaluated the impact of increased digesta viscosity in birds during an Eimeria spp. challenge.2. In experiment 1, a corn-soybean meal-based basal diet was supplemented with 0, 10 or 20 g/kg CMC at the expense of cornstarch and offered to seven birds in each of eight replicate cages per diet from d 8 to 22 post hatching.3. Increasing digesta viscosity due to dietary CMC linearly reduced (p < 0.05) body weight (BW) gain and the apparent ileal digestibility of nutrients. The relative lengths of the duodenum, jejunum and ileum linearly increased (p < 0.01) with dietary CMC inclusion.4. In experiment 2, on d 14, 256 broiler chickens were randomly assigned to eight replicate cages in a 2 × 2 factorial arrangement of treatments with two CMC concentrations (0 or 10 g CMC/kg of diet), with or without an Eimeria challenge. On d 15, birds in the challenge groups were orally gavaged with a 1 ml solution containing 25,000, 25,000 or 125,000 oocysts of E. maxima, E. tenella and E. acervulina; or 1% PBS, respectively.5. Increasing digesta viscosity in Eimeria-challenged birds decreased the total tract digestibility of dry matter and gross energy (p < 0.05). The ileal gene expression of glucose transporters was upregulated (p < 0.05) in challenged birds that received the CMC-supplemented diet.6. In summary, increased digesta viscosity induced changes in the expression of nutrient transporter genes and decreased nutrient utilisation in Eimeria-challenged birds.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"769-780"},"PeriodicalIF":1.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0