British Poultry Science最新文献

Pharmacokinetics and plasma protein binding of oxytetracycline in ducks (Anas platyrhynchos) following intravenous, intramuscular, subcutaneous and oral administration. 鸭（Anas platyrhynchos）静脉、肌肉、皮下和口服给药后土霉素的药代动力学和血浆蛋白结合

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-11-09 DOI: 10.1080/00071668.2026.2738152

E Badillo, P Marín, O Corum, H Oguz, E Escudero, D Durna Corum, E Turk, T Erdogan, H R Ceyhan, B Kılınc, K Uney

{"title":"Pharmacokinetics and plasma protein binding of oxytetracycline in ducks (Anas platyrhynchos) following intravenous, intramuscular, subcutaneous and oral administration.","authors":"E Badillo, P Marín, O Corum, H Oguz, E Escudero, D Durna Corum, E Turk, T Erdogan, H R Ceyhan, B Kılınc, K Uney","doi":"10.1080/00071668.2026.2738152","DOIUrl":"https://doi.org/10.1080/00071668.2026.2738152","url":null,"abstract":"1. Tetracyclines are among the most widely used antibiotics in poultry, with oxytetracycline (OTC) playing a key role due to its routine administration via feed and water to treat susceptible bacterial infections. Despite its widespread clinical use, understanding of the pharmacokinetics of OTC in the genus Anas remains remarkably limited. The following study characterised the pharmacokinetic profile of OTC after intravenous (IV), intramuscular (IM), subcutaneous (SC) and oral administration in ducks (Anas platyrhynchos).2. A total of 24 ducks (six per group in a parallel study) were given OTC at a dose of 40 mg/kg via IV, IM, SC and oral routes. Blood samples were collected at various time points ranging from 0 min (control) to 96 h post-administration. The samples were examined by high-performance liquid chromatography (HPLC) and the pharmacokinetic parameters were assessed through non-compartmental analysis.3. Following IV administration, the volume of distribution (2.73 l/kg) suggested extensive tissue penetration. Elimination half-lives were 12.69 h (IM), 13.54 h (SC) and 12.62 h (oral), all slightly longer than after IV dosing (9.72 h) with no significant differences between extravascular routes. Bioavailability was high after parenteral administration (≈90-98%), suggesting near-complete absorption, whereas oral bioavailability was low (≈17%), indicating gastrointestinal absorption as the main limiting factor. Plasma protein binding was high (87-93%).4. Parenteral administration of OTC (40 mg/kg) in ducks can achieve effective exposure against pathogens with minimum inhibitory concentration (MIC) ≤0.5 µg/ml.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-7"},"PeriodicalIF":1.7,"publicationDate":"2026-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149377514","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

Effects of environmental enrichments applied to pasture areas on free-range laying hens: 2. Pasture use, behaviour and welfare. 牧区环境富集对散养蛋鸡的影响：牧场使用、行为和福利。

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-11-06 DOI: 10.1080/00071668.2026.2751461

M Gündüz, A İpek

{"title":"Effects of environmental enrichments applied to pasture areas on free-range laying hens: 2. Pasture use, behaviour and welfare.","authors":"M Gündüz, A İpek","doi":"10.1080/00071668.2026.2751461","DOIUrl":"https://doi.org/10.1080/00071668.2026.2751461","url":null,"abstract":"1. This study assessed the effects of environmental enrichment on outdoor ranges for birds aged either 25, 36, 48 and 56 weeks on pasture use, behaviour and welfare of free-range laying hens. In total, 900 hens (25 weeks old) were randomly divided into three groups (control, object enrichment and tree enrichment) with three pens each (100 hens/pen). Each group was provided with a closed shelter and pasture range nearby.2. A control (CON) group of birds was maintained without any extra enrichment. Various rectangular, square, cylindrical and triangle shaped boxes, pipes, buckets and structures in yellow, red and orange colour were used for the 'object' (OBJ) enrichment treatment, whereas tall and broad-leaved plants and Thuja trees were used for the 'tree' (TREE) enrichment treatment.3. The use of total pasture area in hens was not different amongst enrichment treatment groups or bird age. While the proportion of OBJ hens using the inner zone of the pasture was higher (p < 0.01), CON and TREE hen groups were found more in the outer zone of the pasture (p < 0.01).4. Enrichment treatment and age did not affect blood heterophil, lymphocyte and heterophil/lymphocyte (H/L) ratio. Feeding, drinking, walking, foraging, resting/laying, perching, scratching/preening and pecking behaviours were not different between enrichment treatment groups. Hens exhibited more feeding, drinking, walking, foraging and less perching, scratching/preening and pecking behaviours with age (p < 0.01).5. There were no differences in feather condition, comb wounds, foot pad dermatitis, keel bone damage, duration of tonic immobility or induction number amongst the enrichment groups. Older hens were showed significant deterioration in feather condition, increased occurrence of comb wounds, footpad dermatitis, hock burns and keel bone damage (p < 0.01). These findings indicated that environmental enrichment can increase the use of a specific area of the pasture where objects are used for enrichment.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-10"},"PeriodicalIF":1.7,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149357140","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

Effects of embryonic thermal manipulation and post-hatch synbiotic supplementation on growth performance, gut morphology, skeletal traits and caecal microbiota of broiler chickens under tropical conditions. 热带条件下胚胎热处理和孵化后添加合成菌对肉鸡生长性能、肠道形态、骨骼性状和盲肠菌群的影响

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-11-06 DOI: 10.1080/00071668.2026.2738150

A A Jupilin, C A H C Ab Ghani, M H Zulkifli, O X Ler, C P Yuan, Z Idrus, A S Ahmad

{"title":"Effects of embryonic thermal manipulation and post-hatch synbiotic supplementation on growth performance, gut morphology, skeletal traits and caecal microbiota of broiler chickens under tropical conditions.","authors":"A A Jupilin, C A H C Ab Ghani, M H Zulkifli, O X Ler, C P Yuan, Z Idrus, A S Ahmad","doi":"10.1080/00071668.2026.2738150","DOIUrl":"https://doi.org/10.1080/00071668.2026.2738150","url":null,"abstract":"1. This study investigated the effects of embryonic thermal manipulation and post-hatch synbiotic supplementation on growth performance, intestinal morphology, foot health, leg strength and tibial characteristics of broiler chickens reared in tropical conditions.2. A total of 840 fertile Ross 308 eggs were incubated at either the optimal temperature (37.5°C) or subjected to embryonic thermal manipulation (38.5°C from embryonic days (ED) 8 to 14). After hatch, chicks received either a basal diet or a basal diet supplemented with a synbiotic (1 g/kg) until 42 d of age.3. From d 21-28 all birds experienced an outbreak of leucocytozoonosis and received identical antiparasitic treatment, enabling comparisons of treatments under disease challenge.4. Embryonic thermal manipulation reduced hatchability (87.7 vs. 95.7%), starter feed intake and early body weight, but did not affect final body weight. Synbiotic supplementation improved overall feed conversion ratio. Under optimal incubation conditions, synbiotic supplementation increased body weight gain and duodenal villus height, whereas, following embryonic thermal manipulation, it increased tibial phosphorus content but reduced villus height.5. Neither embryonic thermal manipulation nor synbiotic supplementation affected gait score, latency-to-lie or caecal bacteria. Footpad dermatitis and hock burn scores increased only in synbiotic-supplemented broilers incubated at optimal temperature.6. Embryonic thermal manipulation altered the response to post-hatch synbiotic supplementation, shifting the benefits from enhanced intestinal morphology and growth performance to improved tibial mineralisation. These findings underscored the importance of incubation conditions when devising nutritional strategies for broiler production.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-11"},"PeriodicalIF":1.7,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149340925","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

Effects of environmental enrichments applied to pasture areas on free-range laying hens: 1. Performance and egg quality. 牧区环境富集对散养蛋鸡的影响：生产性能和鸡蛋品质。

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-11-06 DOI: 10.1080/00071668.2026.2733989

M Gündüz, A İpek

{"title":"Effects of environmental enrichments applied to pasture areas on free-range laying hens: 1. Performance and egg quality.","authors":"M Gündüz, A İpek","doi":"10.1080/00071668.2026.2733989","DOIUrl":"https://doi.org/10.1080/00071668.2026.2733989","url":null,"abstract":"1. This study assessed the effects of environmental range enrichments, bird age and their interactions on laying performance and egg quality from Lohmann Brown hens.2. In total, 900 hens (25 weeks old) were randomly divided into three groups (control, object [OE] and tree [TE] enrichment) with three pen replicates each (100 hens/pen). Each pen was a closed shelter with pasture access nearby. Variously rectangular, square, cylindrical and triangle shaped, red, orange and yellow-coloured boxes, pipes, buckets and structures were used for the OE group, whereas tall and broad-leaved plants and Thuja trees were used for the tree enrichment group.3. Laying performance and egg quality traits were measured at 25-32, 33-40, 41-48 and 49-56 weeks of age.4. Significant differences in egg production were found amongst all groups (p < 0.01) due to differences in mortality at the start of the experimental period (p <<0.001). There were no significant differences between treatments in hen-day egg production. Environmental enrichment significantly decreased the albumen index and affected dirty egg ratio, shell thickness (p < 0.01) and shell weight (p < 0.05). Shell weight showed an interaction between enrichment and age (p < 0.01).5. Age had a significant effect on all performance and egg quality traits (p < 0.05), with 48-week-old hens generating the highest egg mass and hen-day and hen-housed egg production levels (p < 0.01).6. Although environmental enrichment can potentially increase egg production slightly, TE and OE resulted in fewer clean eggs. However, positive effects on albumen and shell quality traits were evident in the OE group.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-10"},"PeriodicalIF":1.7,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149357139","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

In ovo green light cycles (6 versus 12 hours) modulate embryonic development via hepatic gene expression and amino acid metabolism in ducks. 在蛋中，绿光周期（6和12小时）通过肝脏基因表达和氨基酸代谢调节鸭的胚胎发育。

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-11-02 DOI: 10.1080/00071668.2026.2685076

Y Li, H Liu, T Berthie, J Cai, T Zeng, P V Tran, Z Bai, F Shi, D Mao, G Han, Q Wei

{"title":"In ovo green light cycles (6 versus 12 hours) modulate embryonic development via hepatic gene expression and amino acid metabolism in ducks.","authors":"Y Li, H Liu, T Berthie, J Cai, T Zeng, P V Tran, Z Bai, F Shi, D Mao, G Han, Q Wei","doi":"10.1080/00071668.2026.2685076","DOIUrl":"https://doi.org/10.1080/00071668.2026.2685076","url":null,"abstract":"1. While in ovo green lighting (IOL) promotes embryo growth and shortens the incubation period in meat-type ducks, photoperiod effects remain unclear. This study investigated the impact of different IOL photoperiods on embryo development, the hepatic transcriptome and amino acid metabolism.2. A total of 300 fertilised Pekin duck eggs were divided into three groups (n = 100/group) with eight replicates per group and 12-13 eggs per replicate. For the light-treated groups, green LED lamps (520-526 nm, 150 lux) were inserted into the air cells on embryonic day (ED) 9. From ED10 to ED24, eggs were subjected three treatments. 1. Control group conventional total darkness without LED implantation (CON), 6 h/day short-term lighting (STL), or 12 h/day long-term lighting (LTL), both with lights turned on at 07:00 daily. Embryo, heart and liver weights were measured on ED17 and 24, with ED24 livers collected for free amino acid, transcriptomic and PCR analyses.3. Heart and liver weights were unaffected by IOL. However, while embryo weight on ED24 was significantly higher in the LTL group, relative embryonic weight did not differ significantly. Apart from proline, IOL significantly reduced free amino acid levels in the liver, which increased in decline with longer photoperiods. Transcriptomic comparisons between the LTL and CON embryos revealed that light exposure upregulated genes related to energy, lipid and amino acid metabolism, but suppressed extracellular matrix (ECM) genes.4. The 12 h/day green IOL photoperiod altered transcriptomic signatures associated with amino acid utilisation and energy metabolism during the late stages of embryogenesis. This contributed to absolute embryonic biomass accumulation in meat-type ducks.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-10"},"PeriodicalIF":1.7,"publicationDate":"2026-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149318291","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

Dietary pequi oil (Caryocar brasiliense Camb.) improves feed efficiency and oxidative stability in broiler chickens. 饲粮中添加核桃油可提高肉鸡饲料效率和氧化稳定性。

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-11-02 DOI: 10.1080/00071668.2026.2746684

J M Cruvinel, P M Groff-Urayama, C Y Oura, F K de Lima Krenchinski, T S Dos Santos, P P L Trevisani, J R Sartori, A C Pezzato

{"title":"Dietary pequi oil (Caryocar brasiliense Camb.) improves feed efficiency and oxidative stability in broiler chickens.","authors":"J M Cruvinel, P M Groff-Urayama, C Y Oura, F K de Lima Krenchinski, T S Dos Santos, P P L Trevisani, J R Sartori, A C Pezzato","doi":"10.1080/00071668.2026.2746684","DOIUrl":"https://doi.org/10.1080/00071668.2026.2746684","url":null,"abstract":"1. The effects of increasing dietary levels of pequi oil (PO) on growth performance, oxidative status, and meat quality of broilers over a 42-d production period were evaluated. A total of 1,440 one-day-old male Cobb 500 broilers were randomly allocated to one of six dietary treatments with eight replicates and 30 birds per pen. These included a positive control diet supplemented with Avilamycin (0.05 g/kg; AGP), a negative control diet (without treatment; CON) or CON supplemented with 1.5, 3.0, 4.5 or 6.0 g/kg PO.2. During the starter phase (d 1-21), increasing PO levels reduced body weight (BW) and average daily gain (ADG; p < 0.05) linearly. Feed conversion ratio (FCR) responded quadratically to PO level (p = 0.001). The highest PO inclusion (6.0 g/kg) decreased average daily feed intake (FI) compared with the birds fed AGP (p = 0.037). Over the whole trial period (d 1-42), increasing PO linearly improved FCR (p = 0.036) and European performance index values (p = 0.046). Both ADG and FI were not affected (p > 0.05).3. There was no effect of diet on blood biochemical parameters, leukocyte profiles, or relative organ weights, although PO supplementation reduced plasma lipid oxidation (p < 0.001). Meat quality data showed that PO supplementation caused reductions in redness (a*), cooking loss and shear force (p < 0.05). Malondialdehyde content in breast meat decreased in line with PO inclusion in tests covering over 90 days of storage (p = 0.049).4. Supplementing diets with PO improved FCR and oxidative stability without adverse effects on bird health or carcass traits. The data support the use of PO as a natural feed additive to enhance performance and meat quality in broilers.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.7,"publicationDate":"2026-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149318292","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

Neuro-behavioural modulatory and bio-disinfectant effects of standardised Peganum harmala L. extract on incubation performance and neonatal welfare in quail. 标准荆芥提取物对鹌鹑孵化性能和新生儿福利的神经行为调节和生物消毒作用。

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-11-02 DOI: 10.1080/00071668.2026.2749060

E Dogan, A Taskin

{"title":"Neuro-behavioural modulatory and bio-disinfectant effects of standardised Peganum harmala L. extract on incubation performance and neonatal welfare in quail.","authors":"E Dogan, A Taskin","doi":"10.1080/00071668.2026.2749060","DOIUrl":"https://doi.org/10.1080/00071668.2026.2749060","url":null,"abstract":"1. The following study investigated the effects of a standardised Peganum harmala L. (PH) extract on post-hatch behaviour, environmental adaptation, incubation performance and eggshell disinfection in Japanese quail (Coturnix japonica).2. A total of 520 fertile eggs were utilised in the experiment, with 130 eggs randomly assigned to each of the four treatment groups: distilled water (P1), ethanol (P2), 1% PH extract (P3) or 5% PH extract (P4) appliedviaactive humidification on d 1, 3, 7 and 14 of incubation. Analysis by GC-MS was used to identify peganine and quinazoline alkaloids as the primary bioactive components of the PH extract.3. Behavioural assessments (Open Field and Runway tests) showed shorter behavioural latency and enhanced exploratory behaviour in chicks exposed to PH extract compared with controls.4. Microbial analysis showed that the 5% extract (P4) achieved the lowest bacterial load on day 10 compared with P1 (p < 0.05). The eggs in the P4 group had the highest fertile hatchability and chick quality scores among the treatment groups.5. Standardised PH extract represents a promising botanical disinfectant associated with favourable behavioural outcomes in newly hatched chicks, with potential applications for hatchery management.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-7"},"PeriodicalIF":1.7,"publicationDate":"2026-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149318302","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

Dietary astaxanthin enhances egg yolk redness and carotenoid deposition in laying hens fed β-apo-8'-carotenoic acid ethyl ester and canthaxanthin. 蛋鸡饲粮中虾青素增加了β-apo-8′-胡萝卜素酸乙酯和角黄素的蛋黄红度和类胡萝卜素沉积。

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-10-30 DOI: 10.1080/00071668.2026.2751450

H Liu, M Umar Faruk, A Schattner, P Jenn, R Aureli

{"title":"Dietary astaxanthin enhances egg yolk redness and carotenoid deposition in laying hens fed β-apo-8'-carotenoic acid ethyl ester and canthaxanthin.","authors":"H Liu, M Umar Faruk, A Schattner, P Jenn, R Aureli","doi":"10.1080/00071668.2026.2751450","DOIUrl":"https://doi.org/10.1080/00071668.2026.2751450","url":null,"abstract":"1. This study evaluated the effects of dietary astaxanthin supplementation on yolk pigmentation, carotenoid deposition and yolk quality in laying hens fed diets containing β-apo-8'-carotenoic acid ethyl ester (apo-ester) and canthaxanthin.2. A total of 168 NovoColor hens (71 weeks of age) were assigned to one of 14 dietary treatments. Treatments included a low-pigment control (CON), canthaxanthin-only (CAN), an apo-ester (AE) plus canthaxanthin treatment, with graded levels of astaxanthin (AX) supplementation (from 5 to 100 mg/kg). Each treatment consisted of six replicates of two individually housed hens. The study lasted for 4 weeks. Egg production performance, yolk colour, carotenoid deposition and yolk index were determined.3. Dietary treatments did not affect laying performance (p > 0.05). Increasing dietary AX supplementation increased yolk concentrations of AE, CAN and AX and improved yolk pigmentation (p < 0.05). Both CAN and AX deposition efficiencies showed both linear and quadratic responses to increasing AX inclusion, whereas AE deposition responded quadratically (p < 0.05), with AE and CAN deposition peaking at 50 mg/kg astaxanthin.4. Yolk pigmentation increased rapidly after dietary introduction and reached a plateau by d 8. Eggs from carotenoid-supplemented hens had higher yolk index values than eggs from CON hens (p < 0.05), while yolk index decreased with storage duration.5. In conclusion, dietary AX enhanced yolk pigmentation and carotenoid deposition without compromising laying performance, supporting its use as a complementary red pigment in layer diets. The higher egg yolk index from hens fed carotenoid-containing diets may contribute to maintaining yolk quality during ambient storage.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149294976","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 dehydrated orange pomace inclusion and β-glucanase and xylanase supplementation on performance, egg quality and physiological responses of Japanese quails. 脱水橙渣包埋及添加β-葡聚糖酶和木聚糖酶对日本鹌鹑生产性能、蛋品质和生理反应的影响

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-10-28 DOI: 10.1080/00071668.2026.2738148

L M de Paulo, J I M Araujo, A B V S Gouveia, S A Sampaio, J M S Silva, W Justina da Silva, W Lopes Dos Santos Freitas, L F Diniz Aniceto E Silva, J Cristina Alvarenga, F R Dos Santos, C S Minafra

{"title":"Influence of dehydrated orange pomace inclusion and β-glucanase and xylanase supplementation on performance, egg quality and physiological responses of Japanese quails.","authors":"L M de Paulo, J I M Araujo, A B V S Gouveia, S A Sampaio, J M S Silva, W Justina da Silva, W Lopes Dos Santos Freitas, L F Diniz Aniceto E Silva, J Cristina Alvarenga, F R Dos Santos, C S Minafra","doi":"10.1080/00071668.2026.2738148","DOIUrl":"https://doi.org/10.1080/00071668.2026.2738148","url":null,"abstract":"1. This study evaluated the effects of replacing 10% of the maize in the diet with dehydrated orange pomace (DOP) in Japanese quail. Treatments included supplementation with β-glucanase and xylanase. Data included productive performance, nutrient digestibility, egg quality, serum biochemical profile, pancreatic characteristics and gastrointestinal tract biometry.2. A total of 144 female Japanese quails (Coturnix coturnix japonica) were used, arranged in a completely randomised design with a 2 × 2 factorial layout, consisting of two levels of DOP inclusion (0% and 10%) and two levels of enzyme supplementation (without and with β-glucanase and xylanase), with six replicates and six birds per experimental unit. The experiment lasted 84 d, divided into three experimental cycles of 28 d each. Data were subjected to analysis of variance and means were compared using Tukey's test at a 5% significance level.3. Supplementation with β-glucanase and xylanase improved feed conversion for egg mass (FCRegg) and increased the nitrogen retention and ether extract digestibility coefficients. The inclusion of 10% DOP increased egg mass, laying percentage and commercial viability, in addition to reducing serum cholesterol concentrations. No negative effects were observed for feed intake, egg quality, pancreatic parameters or development of major gastrointestinal tract organs.4. Under the conditions evaluated in this study, inclusion of 10% DOP showed potential as an alternative feed ingredient for Japanese quail. Supplementation with β-glucanase and xylanase improved aspects of FCRegg and nutrient utilisation.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-11"},"PeriodicalIF":1.7,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149285336","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

Effects of different laying management strategies on subsequent fear responses in aviary laying hens. 不同产蛋管理策略对鸟舍蛋鸡后续恐惧反应的影响。

IF 1.7 3区农林科学

British Poultry Science Pub Date : 2026-10-26 DOI: 10.1080/00071668.2026.2731577

M Petek, J M Siegford

{"title":"Effects of different laying management strategies on subsequent fear responses in aviary laying hens.","authors":"M Petek, J M Siegford","doi":"10.1080/00071668.2026.2731577","DOIUrl":"https://doi.org/10.1080/00071668.2026.2731577","url":null,"abstract":"1. This study investigated subsequent effects of different floor laying management strategies on the fear response of laying hens housed in two different aviary styles (Big Dutchman® NaturaStep and Natura60).2. Tonic immobility (TI) responses in hens were measured as reactions to a ground robot moving or a human walking on the litter area, compared with control/standard practices. Management strategies were started at 16 weeks of age (WOA) and ended at 32 WOA.3. Twenty birds from six groups (three treatments × two aviary styles) were chosen at random for TI testing at 36, 44, and 55 WOA. For this purpose, randomly collected hens were gently taken out of their pens and transported to the testing room using a mobile multi-tier cage. Each individual hen was placed gently on its back on a flat surface, and TI was induced by gently pressing on its breast. If TI was induced, the length of time to the first head movement, the latency to return to an upright position, and the number of attempts to induce TI were recorded.4. Aviary style significantly affected the length of time to first head movement (p < 0.05). Hens at 55 WOA remained in TI significantly longer than those of earlier ages (p = 0.004). There were no significant effects of stressors/management strategies or aviary style on time to upright position. The average number of attempts required to induce TI was similar for all birds.5. The results indicated that neither stressors or aviary styles had any significant effects on the traits investigated. Older hens tended to exhibit higher levels of fearfulness compared to younger hens.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.7,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149262997","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}

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