British Poultry Science最新文献

{"title":"An innovative approach to emulsifier use in broiler feed affects nutrient digestion and growth performance in young broilers.","authors":"D Michels, S H E Verkempinck, K Vermeulen, R Spaepen, E Burton, D Scholey, A L Wealleans, T Grauwet","doi":"10.1080/00071668.2024.2440874","DOIUrl":"10.1080/00071668.2024.2440874","url":null,"abstract":"<p><p>1. This study evaluated the effect of oil-in-water (o/w) emulsion supplementation in feed compared to a conventional oil and emulsifier combination on fat and protein digestibility and growth performance in broiler chickens. The effects of this supplementation on macronutrient digestion kinetics were investigated through simulated <i>in vitro</i> digestion based on the broiler gastrointestinal tract.2. A total of 450 one-d-old Ross 308 chickens were assigned to one of the five dietary treatments consisting of nine replicates of 10 broilers each. The treatments included a control diet containing oil (3.25%) without emulsifiers, (NON-EM Low) or with a low emulsifier inclusion (0.10%), an EM Low diet supplemented with o/w emulsion using a low emulsifier concentration (3.25% oil; 0.10% emulsifier), a NON-EM High diet supplemented with oil (3.25%) and a emulsifier at high inclusion (0.65%) or a EM High diet supplemented with o/w emulsion using emulsifier at high inclusion (3.25% oil; 0.65% emulsifier). The feeding trial lasted 21 d using growing broilers.3. Body weight gain was higher in o/w emulsion diets EM Low and High compared to the other three diets. Fat digestibility at 21 d of age was not significantly different, although protein digestibility was lower in birds fed EM Low and EM High diets.4. <i>In vitro</i> digestion was substantially different in lipolysis, protein and starch hydrolysis kinetics. O/w emulsion supplementation reduced lag times in lipolysis and starch digestibility, and adding emulsifier altered the overall protein and lipid digestion kinetic behaviour.5. In conclusion, this study showed that o/w emulsion supplementation significantly improved broiler performance, most likely caused by differences in nutrient digestion kinetics in the starter phase. This research showed the potential of <i>in vitro</i> simulation to complement <i>in vivo</i> trials to understand digestion kinetics or to perform screening of potential diets before performing <i>in vivo</i> trials.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"547-557"},"PeriodicalIF":1.6,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397850","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}

{"title":"Effect of spermidine on cuproptosis in follicular granulosa cells.","authors":"S Li, Y Qi, Y Qi, Z Wang, S Xu, T Xiao, Y Zhu, W Zheng, X Wang, D Jiang, B Kang","doi":"10.1080/00071668.2025.2454962","DOIUrl":"10.1080/00071668.2025.2454962","url":null,"abstract":"<p><p>1. A study was conducted to investigate the effect of spermidine on cuproptosis in granulosa cells of goose ovarian follicles. Granulosa cells from F2-F5 grade follicles of Sichuan white geese were isolated and cultured.2. Copper sulphate, spermidine and chloroquine were administered to granulosa cells (GC). The GC activity, intracellular Cu²⁺ content, antioxidant enzyme activity, expression levels of genes and proteins related to autophagy and cuproptosis were determined.3. The results showed that spermidine significantly decreased reactive oxygen species (ROS) levels, mitochondrial membrane potential and Cu²⁺content (<i>p</i> < 0.05), and significantly increased the granulosa cell activity (<i>p</i> < 0.001). At the same time, spermidine significantly decreased the expression levels of ferredoxin 1 (<i>FDX1</i>) gene (<i>p</i> < 0.001), lipoylated-dihydrolipoamide S-acetyltransferase (Lip-DLAT) protein (<i>p</i> < 0.05), and increased the expression levels of <i>LC3</i> gene (<i>p</i> < 0.001). After the cells were treated with spermidine mixed with chloroquine for 8 h, the cells were treated with copper sulphate, and GC activity was significantly decreased (<i>p</i> < 0.001). The expression levels of <i>p62</i> and <i>FDX1</i> genes were significantly increased (<i>p</i> < 0.01) and protein levels of LC3 and p62 were significantly increased (<i>p</i> < 0.05).4. In summary, spermidine reduced ROS accumulation, improved mitochondrial membrane potential and increased granulosa cell activity. It alleviated copper sulphate-induced lipoylated protein aggregation and cuproptosis in GC by inducing autophagy. This suggested that spermidine has a broad application prospect in alleviating cuproptosis in GC.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"539-546"},"PeriodicalIF":1.6,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143603956","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}

{"title":"Evaluation of calcium and non-phytate phosphorus deficient diets: effects on growth performance, carcase yield, tibia characteristics and jejunum histomorphology at 42 days of age in broilers.","authors":"Yusuf Cufadar, Osman Olgun, Seyit A Gökmen, Esra T Gül, Behlül Sevim","doi":"10.1080/00071668.2025.2530559","DOIUrl":"https://doi.org/10.1080/00071668.2025.2530559","url":null,"abstract":"<p><p>1. The objective of this study was to ascertain the impact of dietary calcium (Ca) and non-phytate phosphorus (nPP) levels that were progressively reduced in feed on performance, carcase, tibia traits and jejunum crypt depth and villus height in broilers.2. For the purposes of this study, 480, one-day-old chicks were randomly distributed into four treatment groups, with eight replicates per group and 15 birds per replicate. The starter period consisted of two different diets; the control diet contained 0.96% Ca and 0.48% non-phytase phosphorus (nPP) and the L-nPP diet contained 0.90% Ca and 0.45% nPP. The grower and finisher periods consisted of four different diets, namely control, L-nPP1, L-nPP2 and L-nPP3. The Ca contents of the control, L-nPP1, L-nPP2 and L-nPP3 diets during the grower period were 0.87%, 0.83%, 0.79%, 0.75% and the nPP contents were 0.44%, 0.42%, 0.40%, 0.38%, respectively. In the finisher period, the Ca contents of the control, L-nPP1, L-nPP2 and L-nPP3 diets were 0.78%, 0.71%, 0.60%, 0.50% and the nPP contents were 0.39%, 0.35%, 0.30%, 0.30%, respectively.3. Dietary treatments had no effect on body weight or body weight gain; however, a decrease was observed in the L-nPP2 and L-nPP3 diet groups compared to the control group over the 11-24 d period.4. No significant differences were observed in terms of tibial diameter, wall thickness or cross-sectional area. However, tibial ash and shear force were significantly lower in all groups with reduced Ca and nPP levels compared to the control group. The group fed the L-nPP3 diet exhibited a significantly higher crypt depth in comparison to the control and L-nPP1 groups, which was accompanied by a lower ratio of villus height to crypt depth.5. Wheat and maize-based broiler diets can be fed with 23% reduced Ca and nPP levels of recommended values without adversely affecting growth performance but may compromise skeletal health and intestinal histomorphology of broilers.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-8"},"PeriodicalIF":1.7,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144741272","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}

{"title":"<i>Aronia melanocarpa</i> pomace enhances egg production and quality in late-laying hens <i>via</i> modulating gut microbiota and lipid metabolism.","authors":"W Yuan, W Gou, Y Liu, J Fu, Q Si, M Liu, N Zhang, H Shang","doi":"10.1080/00071668.2025.2526157","DOIUrl":"https://doi.org/10.1080/00071668.2025.2526157","url":null,"abstract":"<p><p>1. This study investigated the effects of <i>Aronia melanocarpa</i> pomace (AP) supplementation on serum variables, egg quality, laying performance, nutrient utilisation and gut microflora in late-stage laying hens.2. A total of 288 Hy-Line Brown hens (60 weeks old) were randomly allocated to one of four groups: a control (basal) or the basal diet supplemented with either 1% AP (APL), 2% AP (APM), or 3% AP (APH) for 20 weeks. Each group contained six replicates of 12 hens.3. Egg production, egg mass and shell thickness increased with AP supplementation, peaking in the 3% AP group (<i>p</i> < 0.05). The AP supplementation significantly reduced serum total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C) and aspartate aminotransferase (ALT) concentrations, with the greatest reductions observed in the 3% AP group (<i>p</i> < 0.05). Linear decreases in TG, TC and LDL-C were more pronounced in the 2% and 3% AP groups (<i>p</i> < 0.05). Linear improvements in calcium metabolism were observed in AP groups compared to the control group (<i>p</i> < 0.05).4. Crypt depth decreased in the duodenum, jejunum and ileum (<i>p</i> < 0.05), while the villus height-to-crypt depth ratio increased in the duodenum and ileum (<i>p</i> < 0.05), with a similar trend for the jejunal samples (<i>p</i> = 0.092). The AP supplementation increased beta diversity of caecal microbiota. At the genus level, <i>Megamonas</i> and <i>Olsenella</i> spp. abundance rose (<i>p</i> < 0.05), while <i>Barnesiella</i> spp. decreased (<i>p</i> < 0.05).5. Supplementation with 3% AP enhanced laying performance and egg quality in late-stage hens by improving lipid metabolism, calcium utilisation and gut microbiota composition. These findings highlighted AP as a functional feed additive for sustainable poultry production.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-15"},"PeriodicalIF":1.7,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144728078","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}

{"title":"Genome-wide scanning for selection signatures in two autochthonous Anatolian chicken breeds.","authors":"E Demir, B Argun Karsli, D Özdemir, U Bilginer, H Doğru, S Kaya, V Atmaca, N Tufan, E Demir, T Karslı","doi":"10.1080/00071668.2025.2528239","DOIUrl":"https://doi.org/10.1080/00071668.2025.2528239","url":null,"abstract":"<p><p>1. Double digest restriction site-associated DNA sequencing (ddRADseq) data were utilised to perform genome-wide scanning for selection signatures within Denizli (DNZ) and Gerze (GRZ) by a combination of runs of homozygosity (ROH) and Tajima's D index. The genome of native Anatolian chicken breeds was compared to commercial broiler (BROHIB) and layer (LAYHIB) lines <i>via</i> the <i>Rsb</i> approach to identify genomic regions associated with economically important traits.2. Tajima's D index-based selection signatures were detected in 269 and 772 single nucleotide polymorphisms (SNP) in DNZ and GRZ breeds, respectively, overlapped with 32 and 58 protein-coding genes. These genes were positioned within a ROH island, which indicated their fixation across the population.3. A literature review confirmed that numerous genes under selection in Anatolian chicken breeds were associated with environmental adaptation. These included thermo-tolerance (<i>HIKESHI</i> and <i>DINAJC13</i>), pathogen and disease resistance (<i>OTOGL, GRAP2, ACKR4, CDK1, LRRC3B, DLC1, TRMT9B, GULP1</i> and <i>ABL2</i>) as well as survival traits including hearing (<i>PTPRQ</i>), vocal learning (<i>GRIN2B</i>), vision (<i>ADAM22</i> and <i>LONRF1</i>) and reaction to fear (<i>TOR3A</i>). The results of comparative <i>Rsb</i> analysis revealed 10 (<i>DDAH1, BCL10, SYDE2, DNAI3, MCOLN3, MCOLN2, LAMA5, RPS21, CABLES2</i> and <i>RBBP8NL</i>) and three (<i>NRP1, ITGB1</i> and <i>EPC1</i>) genes common in native Anatolian chicken breeds and commercial hybrid lines implying that they are likely to affect economically important traits.4.This study confirmed that the genome of native Anatolian chicken breeds has been shaped by natural selection in response to adverse environmental conditions. Among detected genes, <i>GRIN2B</i> seems promising for explaining the genetic underpinnings of the long crowing characteristics of the DNZ breed since it is linked to vocalisation and learning ability in avian species.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-10"},"PeriodicalIF":1.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144706414","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}

{"title":"Eggshell colour affecting the safety and quality of Japanese quail eggs (<i>Coturnix coturnix japonica</i>).","authors":"M Ludoški, N Grković, B Suvajdžić, I Vićić, I Branković Lazić, T Baltić, N Čobanović","doi":"10.1080/00071668.2025.2527225","DOIUrl":"https://doi.org/10.1080/00071668.2025.2527225","url":null,"abstract":"<p><p>1. This study determined the presence of <i>Salmonella</i> spp. on the shell of Japanese quail eggs of different colour and to examine effects of eggshell colour on the internal and external quality characteristics and chemical composition of eggs. A total of 360 Japanese quail eggs derived from the same farm (near Belgrade, Serbia) were divided into two groups based on shell colour: brown-spotted (<i>n</i> = 180) and blue (<i>n</i> = 180) eggs.2. Out of 360 Japanese quail eggs examined, <i>Salmonella</i> spp. was found on the shells of 12 samples (3.33%), all of which originated from blue quail eggs (6.67%).3. Blue quail eggs had higher egg weight, dirty eggs, egg width and E_{whole egg} value, but lower eggshell dirtiness score, percentage of normal-shaped eggs and eggshell thickness. Brown-spotted quail eggs had a higher albumen percentage and height, Haugh units, albumen index, yolk height, index and <i>L*</i> and <i>b*</i> value. Contrarily, blue quail eggs had higher albumen pH and width, yolk weight, percentage and width and <i>a*</i> value.4. A higher occurrence of meat and blood spots was detected in blue quail eggs. Blue quail eggs had higher content of proteins, fats, dry matter, ash, oleic acid, linoleic acid, polyunsaturated fatty acids (PUFAs), monounsaturated fatty acids (MUFAs) and Σn-6. They had higher nutritive value index, hypocholesterolaemia/hypercholesterolemic index, <i>n</i>-6/n-3 ratio and PUFA/SFA ratio. Contrarily, brown-spotted quail eggs had higher content of moisture, palmitic acid, palmitoleic acid, stearic acid, elaidic acid and saturated fatty acids (SFAs), as well as higher atherogenic and thrombogenic index.5. In conclusion, brown-spotted quail eggs are safer for consumption and have higher internal and external quality characteristics, whereas blue quail eggs have more favourable chemical composition, fatty acid profile and lipid indexes.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-13"},"PeriodicalIF":1.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144706413","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}

{"title":"Disposition kinetics and tissue residues of Lincomycin following intravenous, intramuscular and single and multiple oral dosing in domestic geese (<i>Anser anser domesticus</i>).","authors":"K Bourdo, C Fadel, M Giorgi, M Gbylik-Sikorska, A Matras, A Poapolathep, B Lebkowska-Wieruszewska","doi":"10.1080/00071668.2025.2524711","DOIUrl":"https://doi.org/10.1080/00071668.2025.2524711","url":null,"abstract":"<p><p>1. Lincomycin, a lincosamide antibiotic, is commonly used for treating necrotic enteritis and chronic respiratory disease caused by avian mycoplasmas. Given its similar use in other birds, it has the potential to be applied off-label in geese. 2. This study examined the pharmacokinetics and tissue residues of Lincomycin in 16 healthy adult male geese. The study consisted of four phases, each separated by a one-month 'washout' period. Geese received Lincomycin <i>via</i> intravenous (IV, 1 mg/kg), single intramuscular (IM, 15 mg/kg), single oral (PO, 50 mg/kg) and multiple oral (SID, 5 mg/kg for 7 d consecutively) routes. Blood and tissue samples were collected at specific intervals for analysis using a validated UHPLC-MS/MS method. 3. Following IV administration, the mean values t1/2, V_d, and Cl were at 4.19 h, 2727.16 ml/kg, and 451.26 ml/h/kg, respectively. For both extravascular routes, Lincomycin displayed a high bioavailability (109% IM; 95% single PO) and rapid absorption (MAT 0.42 h IM; 2 h single PO) in geese. Multiple oral doses showed no plasma accumulation, but tissue data revealed quantifiable concentrations at 72 h. The calculated preliminary WT were determined as 1 d for the muscles, and 4 d for the kidneys and liver. 4. Despite the promising PK profile, the administered doses were inadequate to sustain drug concentrations above the MIC₉₀ for certain target pathogens, indicating the need for further optimisation of treatment regimens, including combinations with spectinomycin, as practiced in other animal species.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-9"},"PeriodicalIF":1.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641868","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}

{"title":"Treating scaly leg in backyard poultry: a case study from Greece.","authors":"M A B Christodoulopoulos, M Lefkaditis, G I Papakonstantinou, D A Gougoulis, N Tsekouras, V G Papatsiros","doi":"10.1080/00071668.2025.2525516","DOIUrl":"https://doi.org/10.1080/00071668.2025.2525516","url":null,"abstract":"<p><p>1. Scaly leg, caused by <i>Cnemidocoptes mutans</i>, is occasionally observed in backyard poultry farms in Greece. In Greece, infestations with <i>C. mutans</i> typically result in mild lesions and occasional scratching behaviour.2. This study evaluated the therapeutic efficacy and safety of two antiparasitic treatments - Phoxim (<i>via</i> foot baths and barn spraying) and Ivermectin (in feed) - in 36 backyard poultry farms in southern Greece, in groups of 15-82 chickens.3. All treatment protocols were found to be effective and safe for clinical use. A single application of either treatment was as effective as two applications administered 11 d apart. Barn spraying with Phoxim solution did not enhance the efficacy of the Phoxim foot bath. For Ivermectin administered via medicated feed, it was observed that providing the drug for only 1 d may result in some birds not consuming the necessary dose. Therefore, it is recommended to administer the medicated feed over at least two consecutive days to ensure adequate drug intake.4. The study investigated the impact of scaly leg on egg production, the potential effects of Ivermectin on egg production and the role of cohabiting Muscovy ducks in an additional 10 backyard poultry farms. The results indicated that (i) scaly leg disease was associated with a reduction in egg production, (ii) Ivermectin had no adverse effects on egg production in laying hens and (iii) Muscovy ducks were not affected by <i>Cnemidocoptes mutans</i> and did not contribute to its transmission or epidemiology.5. These findings provide practical recommendations for managing scaly leg in backyard flocks and contribute to improved poultry health and productivity in small-scale farming systems.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-7"},"PeriodicalIF":1.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641870","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}

{"title":"Impact of topical anaesthetic eye drops on corneal thickness and intraocular pressure measurements in broiler chickens: implications for ophthalmological evaluation.","authors":"Y A Ozturan, R Yaygingul, M Kaya, I Akin","doi":"10.1080/00071668.2025.2525520","DOIUrl":"https://doi.org/10.1080/00071668.2025.2525520","url":null,"abstract":"<p><p>1. Ophthalmological examinations in poultry are essential for monitoring overall health and welfare. These are commonly assessed using intraocular pressure (IOP) and corneal thickness (CT). This study examined the effects of 0.5% proparacaine HCl topical anaesthetics on IOP and CT across various corneal regions in broiler chickens.2. Ninety male broilers were housed under controlled conditions and underwent ophthalmic examinations, including CT and IOP. Baseline measurements were recorded for both eyes, after which 0.5% proparacaine HCl drops were instilled in the right eyes, while the left eyes received physiological saline solution (PSS) drops as controls.3. Significant differences were observed between proparacaine HCI and PSS groups in nasal, temporal, inferior, superior and central CT measurements post-treatment, with proparacaine HCI leading to decreased CT values across various corneal areas compared to PSS. Correlations between IOP and CT measurements varied, which suggested potential disruptions in ocular dynamics following topical intervention.4. The findings emphasised the necessity of accounting for the influence of topical anaesthetics on ocular assessments to ensure accurate diagnosis and treatment.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-7"},"PeriodicalIF":1.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641869","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}

{"title":"Arginine requirement of breeding pigeons during incubation and lactation in the 2 + 4 lactation pattern.","authors":"W Zhang, S Zheng, W Huang, X Lu, H Lu, Y Zhang, Y Lv, Z Li, W Chen, S Mo, G Tan, Y He, Q Huang, Z Gou, J Wang, Z Wang, Z Li, X Xu, W Wang, Y Huang, J Peng","doi":"10.1080/00071668.2025.2523060","DOIUrl":"https://doi.org/10.1080/00071668.2025.2523060","url":null,"abstract":"<p><p>1. This study evaluated the effectiveness of different concentrations of arginine (Arg) in the diet on reproductive performance, body weight loss and plasma biochemical indices of breeding pigeons as well as on growth performance, carcass characteristics and plasma biochemical indices of squabs.2. In total, 360 pairs of 12-16-month-old European Mimas breeding pigeons were randomly divided into six groups (10 replicates of 6 pairs each). They were fed different pelleted diets with Arg levels of 0.58, 0.73, 0.88, 1.03%, 1.18 or 1.33%, respectively, for an experimental period of 45 d.3. The highest body weight gain during the incubation period occurred in the 1.03% Arg group. Feed intake increased curvilinearly throughout the trial in line with the increase in Arg levels, the highest being observed in the 1.18% Arg group.4. Body weight of squabs increased curvilinearly with an increase in Arg levels, with the highest occurring in the 1.18% Arg group. The FCR decreased curvilinearly with an increase in Arg levels. The lowest FCR occurred in the 1.03% and 1.18% Arg groups. Slaughter weights, eviscerated weight and pectoral muscle weights of 21 d squabs increased curvilinearly with increasing Arg levels and the best slaughter yield was observed in the 1.18% group.5. In addition, the highest plasma activities of total superoxide dismutase (T-SOD) and catalase (CAT) and the lowest malondialdehyde (MDA), aspartate transaminase (AST) and uric acid (UA) levels were observed in the 1.18% group. Using binary regression modelling in SPSS, the optimal dietary Arg level for breeding pigeons, based on the slaughter performance and FCR of squabs was 1.01-1.07%. Additionally, based on the full-term weight loss and oxidative stress of breeding pigeons as evaluation indexes, 0.96-1.01% Arg was optimal.6. In conclusion, the optimal dietary Arg for the best reproductive of breeding pigeons and growth performance of squabs in a 2+4 lactation pattern was 0.96%-1.07%.</p>","PeriodicalId":9322,"journal":{"name":"British Poultry Science","volume":" ","pages":"1-11"},"PeriodicalIF":1.6,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144590514","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}