British Poultry Science最新文献_第2页

The effect of intraperitoneal injection of Glycyrrhizin on central regulation of food intake in broilers injected with LPS. 腹腔注射甘草酸苷对注射 LPS 的肉鸡摄食中枢调节的影响

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-09-09 DOI: 10.1080/00071668.2024.2396451

A Rahdari, F Hamidi

{"title":"The effect of intraperitoneal injection of Glycyrrhizin on central regulation of food intake in broilers injected with LPS.","authors":"A Rahdari, F Hamidi","doi":"10.1080/00071668.2024.2396451","DOIUrl":"10.1080/00071668.2024.2396451","url":null,"abstract":"1. Poultry farming faces challenges regarding correct hygiene and nutrition. One of the challenges is gram-negative bacteria that stimulate pro-inflammatory reactions through lipopolysaccharide (LPS) and cause disease and anorexia. Liquorice, a medicinal plant containing glycyrrhizin (Glz; a saponin and emulsifier compound) as its main active ingredient, was injected into broilers to investigate any beneficial effects on feed intake in LPS-injected broilers.2. The study involved three experiments using 72 male broiler chickens in each, to examine the impact of Glz on feed intake, especially when challenged with lipopolysaccharide (LPS) by intra-peritoneal (IP) injection to cause inflammation (n = 24). Experiment 1 was conducted to examine the effects of intraperitoneal injection of Glz (12.5, 25 and 50 mg) on feed intake in chickens. In experiment 2, the effects of intracerebroventricular injections of LPS (6.25, 12.5 and 25 ng) were examined. The third experiment investigated the impact of IP injection of Glz on inflammation induced by LPS.3. Injection of Glz significantly increased feed intake in a dose-dependent manner. Whereas LPS significantly reduced the feed intake in feed-deprived chickens (p < 0.05).4. In conclusion, Glz can neutralise the feed intake reduction caused by inflammation in broilers, highlighting its potential role in modulating feed intake in broilers.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"124-130"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142153166","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 housing systems on the oxidative defence system, heterophil functions, cellular immune response and cytokines in laying hens. 不同饲养方式对蛋鸡氧化防御系统、异性嗜血杆菌功能、细胞免疫反应和细胞因子的影响

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-09-04 DOI: 10.1080/00071668.2024.2395500

M Erek, E Matur

{"title":"Effects of different housing systems on the oxidative defence system, heterophil functions, cellular immune response and cytokines in laying hens.","authors":"M Erek, E Matur","doi":"10.1080/00071668.2024.2395500","DOIUrl":"10.1080/00071668.2024.2395500","url":null,"abstract":"1. This study investigated the effects of different housing systems on oxidative defence mechanisms, heterophil functions, cellular immune response and cytokine production in laying hens. One hundred and twenty laying hens were allocated into one of four groups: conventional cages, furnished cages, deep litter, and free range.2. Housing system did not affect malondialdehyde concentrations and enzymatic antioxidant status. Ascorbic acid values were higher in deep-litter hens than in those in conventional cages and free range.3. Phagocytic and chemotactic activities tended to rise in the deep-litter system, and oxidative burst was higher than in furnished cages. Cytotoxic T cells were decreased in furnished cages, both cytotoxic and helper T cells decreased in deep litter compared to free range.4. The IL-2 and IL-13 expression was higher in deep litter than in conventional cages, and IL-6 expression was higher in furnished cages than in free range.5. Housing system had no significant effects on the oxidative defence system; however, they affected heterophil functions, cellular defence mechanisms and cytokine production. The results suggested that breeders need to consider the housing system's potential effects on immune defence responses while applying a breeding strategy appropriate for animal welfare and consumer demand.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142124886","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

Supplementing pigeon grit with acidifier improves metabolism and the reproductive performance of breeding pigeons as well as the development of growth performance of squabs. 在鸽砂中添加酸化剂可改善种鸽的新陈代谢和繁殖性能，以及乳鸽的生长发育性能。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-09-30 DOI: 10.1080/00071668.2024.2400692

S Zheng, Y Tang, W Huang, W Zhang, Y Zhang, M Yang, H Lu, Z Li, Y He, X Qiu, Y Liu, Z Gou, Z Qiu, Y Bin, Z Zhang, H Gao, W Wang, J Peng, Y Huang, Y Liang

{"title":"Supplementing pigeon grit with acidifier improves metabolism and the reproductive performance of breeding pigeons as well as the development of growth performance of squabs.","authors":"S Zheng, Y Tang, W Huang, W Zhang, Y Zhang, M Yang, H Lu, Z Li, Y He, X Qiu, Y Liu, Z Gou, Z Qiu, Y Bin, Z Zhang, H Gao, W Wang, J Peng, Y Huang, Y Liang","doi":"10.1080/00071668.2024.2400692","DOIUrl":"10.1080/00071668.2024.2400692","url":null,"abstract":"1. This study evaluated the effectiveness of different types of acidifiers on reproductive performance, body weight loss and plasma biochemical indices of breeding pigeons as well as on growth performance, carcass characteristics, meat quality and plasma biochemical indices of squabs.2. In a 45 d trial, 144 pairs of European white Mimas pigeons were selected and randomly divided into three experimental groups. Three groups of pigeons were fed plain pigeon grit (NC), pigeon grit supplemented with 5% single acidifier (SAG) and pigeon grit supplemented with 5% combined acidifiers (CAG).3. Supplementing with SAG and CAG significantly increased the weight gain in male pigeons from 1-12 d of incubation. However, SAG and CAG had no significant effect on the feed intake of breeding pigeons during incubation, but significantly increased total feed intake of breeding pigeons during the lactation period. Breeder pigeons fed SAG and CAG had significantly higher egg-laying rate at 40 d. In addition, feeding SAG and CAG significantly increased growth rate and slaughter weight of squabs, but SAG reduced the diameter of pectoral muscle fibres. Biochemical indices showed that feeding SAG and CAG improved metabolism and increased the liver function of breeder pigeons and squabs.4. In conclusion, supplementing pigeon grit with acidifiers increased feed intake of breeding pigeons during lactation, protected liver function, enhanced reproductive performance and promoted the growth and development of squabs.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"81-91"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142342059","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

Catalase, superoxide dismutase and butylated hydroxytoluene benefit mid-term storage of red-legged partridge sperm (Alectoris rufa). 过氧化氢酶、超氧化物歧化酶和丁基羟基甲苯有利于红腿鹧鸪精子（Alectoris rufa）的中期储存。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-10-11 DOI: 10.1080/00071668.2024.2394185

B Bernal, I Gallarosa-García, A Toledano-Díaz, C Castaño, R Velázquez, O Torres, M G Gil, J Santiago-Moreno

{"title":"Catalase, superoxide dismutase and butylated hydroxytoluene benefit mid-term storage of red-legged partridge sperm (Alectoris rufa).","authors":"B Bernal, I Gallarosa-García, A Toledano-Díaz, C Castaño, R Velázquez, O Torres, M G Gil, J Santiago-Moreno","doi":"10.1080/00071668.2024.2394185","DOIUrl":"10.1080/00071668.2024.2394185","url":null,"abstract":"1. The present study assessed the effect of different antioxidants on the quality of chilled/frozen-thawed sperm of red-legged partridge.2. Sperm samples from 40 red-legged partridges were collected and extended 1:1 (v:v) with Lake and Ravie 84, supplemented with ascorbic acid or butylated hydroxytoluene (BHT) at 0, 0.2, 0.4, 0.8 mM and catalase (CAT) or superoxide dismutase (SOD) at 0, 100, 200 and 300 IU/ml. Ten sperm samples were used per concentration. Motility and viability were evaluated in fresh and after 6 h of chilling at 5°C or after freezing-thawing.3. For chilled sperm, the presence of ascorbic acid decreased viability and several motility variables; BHT 0.8 mM increased non-progressive motility (NPM, 26.7 ± 1.99 vs. 20.7 ± 2.12); CAT 200 IU/ml improved the rectilinear velocity (40.4 ± 4.63 μ/s vs. 29.9 ± 4.62 μ/s) and linear progression ratio (52.8 ± 3.11% vs. 45.4 ± 2.98%); SOD 100 IU/ml increased NPM (24.5 ± 1.21% vs. 19.3 ± 1.75%) and tended to improve total progressive motility (42.7 ± 3.33% vs. 33.2 ± 3.26%, p = 0.07). Using an extender supplemented with CAT 200 or SOD 100 did not improve the post-thawed sperm quality.4. The present work provides an advance in the optimisation of chilling and freezing protocols for red-legged partridge sperm.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"131-138"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142399471","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

Mannan oligosaccharide as an alternative to infeed antibiotics to improve growth performance of broilers: a meta-analysis. 用甘露寡糖替代饲料抗生素提高肉鸡生长性能：一项荟萃分析。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-08-30 DOI: 10.1080/00071668.2024.2391764

B R Polidoro, M J K de Oliveira, F D S C Braga, G D V Polycarpo

{"title":"Mannan oligosaccharide as an alternative to infeed antibiotics to improve growth performance of broilers: a meta-analysis.","authors":"B R Polidoro, M J K de Oliveira, F D S C Braga, G D V Polycarpo","doi":"10.1080/00071668.2024.2391764","DOIUrl":"10.1080/00071668.2024.2391764","url":null,"abstract":"1. The purpose of this meta-analysis was to evaluate the effect of mannan oligosaccharide (MOS) as an alternative to antibiotic growth promoters (AGP) on feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) of broilers.2. Data from 75,594 broilers were extracted from 17 articles (19 trials) published between January 2010 and March 2023. The main criteria for the publication selection were as follows, at least three treatments applied (negative control group without MOS or AGP versus MOS or AGP supplementation), presence of performance results, and intra-experimental variation associated with the mean of response (such as standard error). Treatments were classified as control, MOS, or AGP, and adjusted means of treatment were compared. Additionally, the average daily gain (ADG) and average daily feed intake (ADFI) of each type of supplementation were calculated relative (Δ) to the control group (ΔADFI and ΔADG) and expressed as a percentage of the difference.3. Broilers receiving a diet supplemented with MOS had a 3.7% better BWG and 3% better FCR compared to the control diet (P < 0.001), but these variables were similar to the group receiving AGP supplementation. No significant difference was detected in FI among treatments (P > 0.050). The relationship between ΔADG and ΔADFI was linear for the MOS and AGP-supplemented group (P < 0.050). The ΔADG of broilers fed diets supplemented with MOS or AGP was 6.4% and 4.54% when ΔADFI was zero, respectively. The ΔADG of MOS increased by 0.58% for every 1% of increasing observed in ΔADFI. The corresponding value for the increased ΔADG for the AGP group was 0.69%.4. The results of this meta-analysis indicated that MOS supplementation is effective in increasing BWG and reducing FCR, similar to broilers fed a diet supplemented with AGP. Therefore, MOS is a safe and sustainable alternative for AGP-free poultry production.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"98-106"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142104612","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

Whole genome analysis of Salmonella Gallinarum strains isolated from a fowl typhoid outbreak in southern Brazil. 从巴西南部禽伤寒疫情中分离出的加里纳氏沙门氏菌菌株的全基因组分析。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-09-11 DOI: 10.1080/00071668.2024.2394973

N N Rizzo, A S P Núncio, R Levandowski, C A D Nascimento, K A Borges, T Q Furian, L Ruschel Dos Santos, F Pilotto, L B Rodrigues, V P Nascimento

引用次数: 0

Effects of dietary calcium and microbial phytase on the bioavailability of two sources of zinc in broilers. 日粮钙和微生物植酸酶对肉鸡两种锌源生物利用率的影响。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-09-25 DOI: 10.1080/00071668.2024.2383920

V Khaksar, F Hervo, N Même, A R Monteiro, A Narcy

{"title":"Effects of dietary calcium and microbial phytase on the bioavailability of two sources of zinc in broilers.","authors":"V Khaksar, F Hervo, N Même, A R Monteiro, A Narcy","doi":"10.1080/00071668.2024.2383920","DOIUrl":"10.1080/00071668.2024.2383920","url":null,"abstract":"1. The objective of this study was to test the effect of microbial phytase and calcium (Ca) levels on the Zn bioavailability depending on the Zn source.2. A total of 144, one-day-old broilers received a diet containing 40 mg Zn/kg for 1 week. They were then assigned to one of the eight experimental treatments during 2 weeks. Diets contained 27 mg native Zn and were formulated according to a 2 × 2 × 2 factorial design with two added Zn sources (23 mg Zn/kg), sulphate (ZnSO4) or oxide (ZnO); two dietary Ca levels of either 6 (low) or 10 g/kg (moderate); and two microbial phytase levels, of either 0 or 750 phytase unit/kg.3. Moderate Ca plus phytase improved body weight gain (BWG) and low Ca level without microbial phytase decreased tibia weight (Ca × Phy; p = 0.049). Zinc oxide resulted in a higher tibia development (i.e. tibia weight and length; p < 0.05) and BWG (p = 0.009) and lower FCR (p < 0.001) compared to ZnSO4.4. Phytase improved tibia Zn concentration especially in birds given ZnSO4 compared to ZnO (Zn × Phy; p = 0.049). Moderate Ca diets improved tibial characteristics and Zn deposition compared to low Ca diets (p < 0.05).5. Soluble Zn in the gizzard increased in the presence of phytase (p = 0.011), while higher dietary Ca reduced this in birds receiving ZnO (p = 0.004). In the jejunum, Zn solubility was higher with phytase (p = 0.008).6. Under the conditions of this study, dietary levels of Ca and microbial phytase affect Zn availability in broilers more than the Zn source.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"107-115"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142342018","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

Genetic parameter estimation and genetic evaluation of important economic traits in white and yellow broilers. 白羽肉鸡和黄羽肉鸡重要经济性状的遗传参数估计和遗传评估。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-09-09 DOI: 10.1080/00071668.2024.2394961

X Liu, D Dou, Z Xu, S Wang, C Chen, J Zhou, L Shen, S Wang, H Li, D Zhang, H Zhang

{"title":"Genetic parameter estimation and genetic evaluation of important economic traits in white and yellow broilers.","authors":"X Liu, D Dou, Z Xu, S Wang, C Chen, J Zhou, L Shen, S Wang, H Li, D Zhang, H Zhang","doi":"10.1080/00071668.2024.2394961","DOIUrl":"10.1080/00071668.2024.2394961","url":null,"abstract":"1. This study calculated descriptive statistics for the production traits of two broiler populations: 1) the Northeast Agricultural University broiler lines divergently selected for abdominal fat content (NEAUHLF white broilers), including fat and lean lines; and 2) the Guangxi yellow broilers. Their genetic parameters were estimated, including (co)variance components, heritability (h2) and genetic correlations (rg), using the REML method.2. Heritability estimates (h2) for NEAUHLF white broilers ranged from 0.07 to 0.61. Traits with high heritability (h2 >0.3) included body weight at 3, 5 and 7 weeks of age (BW3, BW5, BW7), carcass weight (CW), metatarsal circumference (MeC), liver weight (LW), gizzard weight (GW), spleen weight (SW) and testis weight (TeW), while in Guangxi yellow broilers, heritability estimates ranged from 0.18 to 0.76, with every trait exhibiting high heritability, except for SW (0.18).3. Positive genetic correlations for NEAUHLF were found (rg >0.3, ranging from 0.31 to 0.84) between BW7 and metatarsal length (MeL), MeC, body oblique length (BoL), chest angle (ChA), LW, GW, heart weight (HW) and SW. Genetic correlations between abdominal fat weight (AFW) and BW1, BW3, BW5, CW, MeL, keel length (KeL), BoL and LW were positive (rg >0.3, ranging from 0.31 to 0.58).4. Among the Guangxi population, BW (125 d of age) showed strong positive genetic correlations with all other traits (rg >0.3, ranging from 0.30 to 0.99), while AFW displayed strong positive genetic correlations with leg muscle weight (LeW), CW, BW and thigh diameter (TD) (rg >0.3, ranging from 0.44 to 0.51).5. It was concluded that the characteristics of the two populations were different, which means there is a need to use different strategies when performing the breeding work to improve productivity and efficiency in both broiler populations.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"42-48"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142153164","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

Potential of accelerometer tags for monitoring of Japanese quail (Coturnix japonica) reproductive behaviour. 加速度计标签监测日本鹌鹑（Coturnix japonica）繁殖行为的潜力。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-11-04 DOI: 10.1080/00071668.2024.2399600

F B Rossi, C Simian, R Fonseca, M C Bosch, R H Marin, L Barberis, J M Kembro

{"title":"Potential of accelerometer tags for monitoring of Japanese quail (Coturnix japonica) reproductive behaviour.","authors":"F B Rossi, C Simian, R Fonseca, M C Bosch, R H Marin, L Barberis, J M Kembro","doi":"10.1080/00071668.2024.2399600","DOIUrl":"10.1080/00071668.2024.2399600","url":null,"abstract":"1. Monitoring behavioural dynamics in complex animal environments, such as poultry breeding facilities, poses a challenge. Utilising technological approaches, such as accelerometers, offers a solution to assess long-term changes in reproductive activity at an individual bird level. Specifically, these sensors measure acceleration associated with the position and movements of the body over time. However, it is important to assess the most suitable method for attaching accelerometer tags to ensure they do not negatively impact behaviour and yield high-quality data.2. The potential of tri-axial accelerometer tags for assessing reproductive behaviour in Japanese quail was evaluated. Two attachment methods - a backpack (plastic platform with elastic bands near wing bases) and a patch (accelerometer on fabric glued to the synsacrum region) - were compared. Controls were handled similarly but without tags. Eighteen pairs of females were housed in pens and assessed immediately and 24 h after handling. After a week of habituation, a male from the same treatment group was introduced into each pen on d 8. The reproductive behaviour of the males was recorded using accelerometers and video recordings.3. The results showed that birds with patches were able to remove their conspecific's accelerometer and displayed an increased initial immobility response compared to the control and backpack groups. The presence of accelerometer tags did not impact male/female reproductive interactions nor fear responses to a novel object. From accelerometer recordings, male reproductive behaviour was easily identified as high amplitude fluctuations in the three axial components of the acceleration vectors, which was reflected as large values of dynamic body acceleration (VeDBA).4. In conclusion, the use of backpacks with accelerometers is a useful strategy to address highly relevant and difficult to tackle behavioural topics such as the temporal dynamic of male reproductive behaviour within breeding groups.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"19-30"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567624","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 intermittent lighting program and light colour on ocular health variables as welfare indicators in broiler chickens. 间歇性光照程序和光色对作为福利指标的肉鸡眼部健康变量的影响。

IF 1.6 3区农林科学

British Poultry Science Pub Date : 2025-02-01 Epub Date: 2024-08-23 DOI: 10.1080/00071668.2024.2383911

E Derelі Fіdan, R Yaygıngül, M Kaya

{"title":"Effects of intermittent lighting program and light colour on ocular health variables as welfare indicators in broiler chickens.","authors":"E Derelі Fіdan, R Yaygıngül, M Kaya","doi":"10.1080/00071668.2024.2383911","DOIUrl":"10.1080/00071668.2024.2383911","url":null,"abstract":"1. The objective of the present study was to examine the effect of lighting programs and light colour on ocular health variables as welfare indicators in Ross 308 broilers.2. A total of 384, male, one-d-old broiler chickens (Ross 308) were placed in a completely randomised design with a 2 × 2 factorial arrangement of lighting program (continuous or intermittent) and light colour (white and green LED light). Ross 308 broilers under restricted lighting had 18 h of light (18 L:6D), while those under intermittent lighting had cycles of 17 L:3D:1 L:3D throughout the experimental period, which lasted 42 d.3. At the end of the experiment, all eyes of birds (n = 96 birds) underwent a complete ophthalmic examination, which included the Schirmer tear test I, intraocular pressure and eye dimensions. In addition, 32 broilers (eight birds per trial groups) aged 42 d underwent ophthalmic examination to include assessment of ocular ultrasound biometry.4. Light colour had a significant influence on the mean intraocular pressure (p < 0.001). The Ross 308 broilers kept with intermittent lighting had lower eye weights (2.29 g; p < 0.05), palpebral fissure length (14.39 mm; p < 0.01), eye dorsoventral diameter (17.46 mm; p < 0.05), anteroposterior size (13.70 mm; p < 0.01) and corneal dorsoventral diameter (7.81 mm; p < 0.05) compared to those reared under restricted lighting.5. In conclusion, these values for Ross 308 broilers may be applied in poultry ophthalmology to detect early eye disease symptoms and to help the diagnosis of tear disorders that could cause economic losses and welfare issues. Intermittent lighting and green LED light may help reduce eye health problems thus contributing to improved welfare in broilers.","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"10-18"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142035323","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