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Jung EH, Brauner CJ, Wood CM. Do extreme postprandial levels of oxygen, carbon dioxide, and ammonia in the digestive tract equilibrate with the bloodstream in the freshwater rainbow trout (Oncorhynchus mykiss)? J Comp Physiol B 2023; 193:193-205. [PMID: 36656334 DOI: 10.1007/s00360-023-01475-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 12/20/2022] [Accepted: 01/06/2023] [Indexed: 01/20/2023]
Abstract
The gastrointestinal tract (GIT) lumen of teleosts harbors extreme conditions, especially after feeding: high PCO2 (20-115 Torr), total ammonia (415-3710 μM), PNH3 (79-1760 μTorr in the intestine), and virtual anoxia (PO2 < 1 Torr). These levels could be dangerous if they were to equilibrate with the bloodstream. Thus, we investigated the potential equilibration of O2, CO2, and ammonia across the GIT epithelia in freshwater rainbow trout by monitoring postprandial arterial and venous blood gases in vivo and in situ. In vivo blood was sampled from the indwelling catheters in the dorsal aorta (DA) and subintestinal vein (SIV) draining the posterior intestine in the fasting state and at 4 to 48 h following catheter-feeding. To investigate possible ammonia absorption in the anterior part of the GIT, blood was sampled from the DA, SIV and hepatic portal vein (HPV) from anaesthetized fish in situ following voluntary feeding. We found minimal equilibration of all three gases between the GIT lumen and the SIV blood, with the latter maintaining pre-feeding levels (PO2 = 25-49 Torr, PCO2 = 6-8 Torr, and total ammonia = 117-134 μM and PNH3 = 13-30 μTorr at 48 h post-feeding). In contrast to the SIV, we found that the HPV total ammonia more than doubled 24 h after feeding (128 to 297 μM), indicative of absorption in the anterior GIT. Overall, the GIT epithelia of trout, although specialized for absorption, prevent dangerous levels of PO2, PCO2 and ammonia from equilibrating with the blood circulation.
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Affiliation(s)
- Ellen H Jung
- Department of Zoology, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
| | - Colin J Brauner
- Department of Zoology, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Chris M Wood
- Department of Zoology, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
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Hossain ME, Akter N. Further insights into the prevention of pulmonary hypertension syndrome (ascites) in broiler: a 65-year review. WORLD POULTRY SCI J 2022. [DOI: 10.1080/00439339.2022.2090305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Md. Emran Hossain
- Department of Animal Science and Nutrition, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Bangladesh
| | - Nasima Akter
- Department of Dairy and Poultry Science, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Bangladesh
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Lin H, Ding B, Chen L, Zhang Z, He H, Wang J, Wang X, Zhang L, Ni X, Fronte B. The effect of Aspergillus niger as a dietary supplement on blood parameters, intestinal morphology, and gut microflora in Haidong chicks reared in a high altitude environment. Vet World 2020; 13:2209-2215. [PMID: 33281358 PMCID: PMC7704321 DOI: 10.14202/vetworld.2020.2209-2215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 09/18/2020] [Indexed: 02/05/2023] Open
Abstract
AIM The effects of the inclusion of Aspergillus niger in the diet of Haidong chicks reared in the Qing-Zang high altitude area (China) under hypoxic conditions. MATERIALS AND METHODS A total of 720 Haidong chicks were randomly divided into six groups and fed diets supplemented with 0%, 0.5%, 0.75%, 1.0%, 1.25%, and 1.5% of A. niger to determine blood parameters, intestinal morphology, and gut microflora in Haidong chicks reared in a high altitude environment. RESULTS Packed cell volume (PCV), red blood cell (RBC) count, white blood cell count, and hemoglobin concentration increased in the groups fed diets containing A. niger. The administration of A. niger in 1.0% and 1.25% significantly decreased the concentration of Escherichia coli in the cecum, while the concentration of Bifidobacterium and Lactobacillus in the cecum and ileum was increased in the treated groups. When compared to the control groups, villi height, crypt depth, and goblet cell density in the intestine was raised, in general, in the groups treated with A. niger. CONCLUSION These findings suggest that 1.25% A. niger as dietary supplement may improve the resistance to ascites among birds reared under hypoxic conditions.
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Affiliation(s)
- Hao Lin
- State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Baoan Ding
- State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Lingyun Chen
- State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Zhenming Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Hailian He
- State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Jingge Wang
- State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Xiezhong Wang
- Qinghai Animal Disease Control Center, Xining 810001, China
| | - Licheng Zhang
- Qinghai Animal Disease Control Center, Xining 810001, China
| | - Xiaoming Ni
- State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Baldassare Fronte
- Department of Science Veterinary, University of Pisa, Viale delle Piagge 2, 56124, Pisa, Italy
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4
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Lake JA, Brannick EM, Papah MB, Lousenberg C, Velleman SG, Abasht B. Blood Gas Disturbances and Disproportionate Body Weight Distribution in Broilers With Wooden Breast. Front Physiol 2020; 11:304. [PMID: 32317988 PMCID: PMC7154160 DOI: 10.3389/fphys.2020.00304] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/19/2020] [Indexed: 12/13/2022] Open
Abstract
Wooden breast syndrome is a widespread and economically important myopathy and vasculopathy of fast growing, commercial broiler chickens, primarily affecting birds with high feed efficiency and large breast muscle yield. To investigate potential systemic physiological differences between birds affected and unaffected by wooden breast, a total of 103 market-age Cobb 500 broilers were sampled for 13 blood parameters and the relative weights of the pectoralis major muscle, pectoralis minor muscle, external oblique muscle, wing, heart, lungs, liver, and spleen. Blood analysis was performed on samples taken from the brachial vein of live birds and revealed significant differences in venous blood gases between affected and unaffected chickens. Chickens with wooden breast exhibited significantly higher potassium (K+) and lower partial pressure of oxygen (pO2), oxygen saturation (sO2), and pH. Additionally, affected males had significantly higher partial pressure of carbon dioxide (pCO2) and total carbon dioxide (TCO2) than unaffected males. Wooden breast affected broilers also possessed a significantly heavier pectoralis major muscle and whole feathered wing compared to unaffected broilers. Blood gas disturbances characterized by high pCO2 and low pH are indicative of insufficient respiratory gas exchange, suggesting that wooden breast affected broilers have an elevated metabolic rate that may also be inadequately compensated due to cardiovascular deficiencies such as poor venous return or respiratory insufficiency. Lung tissues from 12 birds with extreme sO2 values were subsequently examined to assess whether lung pathology contributed to the observed blood gas disturbance. Comparison of lung morphology between affected and unaffected birds revealed no apparent differences that could contribute to decreased parabronchial gas exchange. However, an interesting finding was the detection of pulmonary phlebitis in one of the wooden breast-affected samples consistent with vascular changes observed in pectoralis major muscle exhibiting the wooden breast phenotype. Our results suggest that the effects of wooden breast are not limited to the pectoralis major muscle and further indicate the importance of research into metabolic changes associated with the myopathy.
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Affiliation(s)
- Juniper A Lake
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE, United States.,Department of Animal and Food Sciences, University of Delaware, Newark, DE, United States
| | - Erin M Brannick
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, United States
| | - Michael B Papah
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, United States
| | - Cory Lousenberg
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, United States
| | - Sandra G Velleman
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, OH, United States
| | - Behnam Abasht
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE, United States.,Department of Animal and Food Sciences, University of Delaware, Newark, DE, United States
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5
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Rowland K, Persia ME, Rothschild MF, Schmidt C, Lamont SJ. Venous blood gas and chemistry components are moderately heritable in commercial white egg-laying hens under acute or chronic heat exposure. Poult Sci 2019; 98:3426-3430. [PMID: 31002114 PMCID: PMC6698185 DOI: 10.3382/ps/pez204] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/21/2019] [Indexed: 11/20/2022] Open
Abstract
Heat stress has a large negative impact on poultry around the world in both intensive and small-scale production systems. Better understanding of genetic factors contributing to response to high ambient temperatures would provide a basis to develop strategies for alleviating negative impacts of heat on poultry production. The objective of this work was to characterize the genetic control (heritability estimate and quantitative trait loci (QTL)) of blood chemistry components before and after exposure to acute and chronic high ambient temperature in a commercial egg laying line Hy-Line W-36 female parent line mature hens were exposed to 4 wk of daily cyclic heat exposure. Blood was collected pre-heat, on the first day of heat, and 2 and 4 wk post heat initiation and analyzed immediately using an i-STAT® hand-held blood analyzer. Thirteen blood components were quantified at the 4 time points: pH, pCO2, pO2, HCO3, TCO2, sO2, iCa, Na, K, base excess, glucose, "hematocrit" (estimated from blood electrical conductivity, BEC), and "hemoglobin" (calculated from BEC). Heritabilities were estimated using genomic relationship information obtained from 600k SNP chip data. All 13 parameters exhibited a significant change after 5 h of heat exposure and most did not return to pre-heat levels throughout the duration of the study. Eight parameters (base excess, glucose, hemoglobin, HCO3, hematocrit, K, pCO2, TCO2) had heritability estimates differing from zero at one or more time points (0.21 to 0.45). The traits with significant heritability would be good candidates for use as biomarkers in a selection program if they are correlated with traits of economic importance that are more difficult to measure. QTL were identified for nine of the traits at one or more time point. These nine traits, however, did not have significant heritability estimates suggesting that while some QTL have been identified their effects are generally small.
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Affiliation(s)
- Kaylee Rowland
- Department of Animal Science, Iowa State University, Ames, IA 50011
| | - Michael E Persia
- Virginia Tech, Department of Animal and Poultry Sciences, Blacksburg, VA 24061
| | - Max F Rothschild
- Department of Animal Science, Iowa State University, Ames, IA 50011
| | - Carl Schmidt
- University of Delaware, Animal and Food Sciences, Newark, DE 19716
| | - Susan J Lamont
- Department of Animal Science, Iowa State University, Ames, IA 50011
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6
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Taheri HR, Nasiri H, Ahmadkhani R. Which source and level of dietary sodium is appropriate for broiler chickens reared in a high-altitude area? J Anim Physiol Anim Nutr (Berl) 2019; 103:1090-1098. [PMID: 31012184 DOI: 10.1111/jpn.13096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 11/30/2022]
Abstract
This study investigated effect of increasing level of dietary sodium using sodium bicarbonate or sodium chloride on growth performance, mortality, characteristics of carcass, organs and tibia, calcium and phosphorus of serum in broilers reared in a high-altitude area (1,700 m above sea level). A total of 588 Ross 308 male broiler chicks were used in seven treatments, six replicates per treatment of 14 birds per each from 1 to 38 d of age. Seven dietary treatments consisted of a basal diet (with 0.16% sodium and 0.23% chloride), top-dressed for six diets to give three supplementary levels of sodium (0.07%, 0.14% and 0.21%) from sodium bicarbonate (respectively by 0.26%, 0.52% and 0.78%) or sodium chloride (respectively by 0.18%, 0.36% and 0.54%), resulting in seven diets with total sodium and chloride levels of 0.16% and 0.23%, 0.23% and 0.23%, 0.30% and 0.23%, 0.37% and 0.23%, 0.23% and 0.33%, 0.30% and 0.44%, 0.37% and 0.55% respectively. Increasing sodium level improved feed conversion ratio (FCR) linearly and quadratically. However, when FCR was calculated without adjusting for feed intake of mortalities, the enhanced sodium level did not improve this parameter. Increasing sodium level via sodium chloride enhanced ascites mortality, total mortality, relative weight of heart and right ventricle linearly. Increasing sodium level reduced serum calcium and enhanced serum phosphorus linearly; however, there was a linear tendency to increase tibia ash when sodium level was enhanced by sodium bicarbonate (p = 0.08) or sodium chloride (p = 0.07). Increasing sodium level via sodium bicarbonate tended (p = 0.08) to reduce tibia strength linearly. In conclusion, a diet with 0.16% sodium and 0.23% chloride is enough for broiler chicken reared in a high-altitude area, and increasing dietary sodium level via sodium chloride has detrimental effect on survivability of broiler in such condition.
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Affiliation(s)
- Hamid Reza Taheri
- Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
| | - Hadi Nasiri
- Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
| | - Rasoul Ahmadkhani
- Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
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7
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A. Olanrew H, D. Collier S, L. Purswel J, L. Branton S. Effects of Light Sources and Intensity on Broilers Grown to Heavy Weights: Hematophysiological and Biochemical Assessment. ACTA ACUST UNITED AC 2016. [DOI: 10.3923/ijps.2016.384.393] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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Kamely M, Torshizi MAK, Rahimi S, Wideman RF. Caffeine causes pulmonary hypertension syndrome (ascites) in broilers. J Anim Sci 2016; 94:1493-500. [DOI: 10.2527/jas.2015-0152] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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9
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Hasanpur K, Nassiri MR, Hosseini Salekdeh G, Vaez Torshizi R, Pakdel A, Kermanshahi H, Naghous M. The suitability of some blood gas and biochemical parameters as diagnostic tools or early indicators of ascites syndrome in broiler sire lines. J Anim Physiol Anim Nutr (Berl) 2015; 100:456-63. [PMID: 26608233 DOI: 10.1111/jpn.12395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 07/29/2015] [Indexed: 11/28/2022]
Abstract
In recent few years, there have been some attempts to find a reliable indicator trait as a selection criterion against susceptibility to ascites syndrome (AS). Blood parameters were of great interest as they could be measured in live animals without implementing an ascites-inducing challenge (AIC). In this work, the suitability of some blood parameters was evaluated for diagnosing AS-susceptible chicks in later steps of the disease in trial 1 as well as their early predictive ability in trial 2. In the first trial, one hundred 1-day-old chicks from two pure broiler lines namely S1 and S2 and, in the second trial, 226 1-day-old chicks from line S2 were subjected to AIC. Saline drinking water (1200 mg/l) and lower-than-standard ambient temperatures were the implemented AICs in trials 1 and 2 respectively. The blood parameters including pH, partial pressure of O2 (pO2 ), partial pressure of CO2 (pCO2 ), bicarbonate ion concentration (BIC), percentage of haematocrit (HCT) and saturated haemoglobin (SaO2 ) were measured twice per each bird at days 28 and 35 in trial 1 and once in trial 2 at day 21. The results of the first trial revealed that in line S2 some of the blood parameters differed significantly between the ascitic and non-ascitic groups following exposure to AIC. In this line, the incidence of AS was accompanied by a lower pO2 , SaO2 and BIC, while with higher pCO2 and HCT values. In the second trial, however, although almost all of the parameters showed meaningful differences between the ascitic and non-ascitic broilers, only mean difference of BIC parameter was statistically significant. The general conclusion of this study is that the blood parameters can somewhat have diagnostic ability in the condition in which the AIC is already present, whereas the results did not approve their usefulness as early predictors of AS.
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Affiliation(s)
- K Hasanpur
- Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - M R Nassiri
- Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | | | - R Vaez Torshizi
- Department of Animal Science, Tarbiat Modares University, Tehran, Iran
| | - A Pakdel
- Department of Animal Science, Isfahan University Of Technology, Isfahan, Iran
| | - H Kermanshahi
- Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - M Naghous
- Department of Animal Science, Birjand University, Birjand, Iran
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10
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Khajali F, Wideman RF. Nutritional approaches to ameliorate pulmonary hypertension in broiler chickens. J Anim Physiol Anim Nutr (Berl) 2015; 100:3-14. [DOI: 10.1111/jpn.12315] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 02/11/2015] [Indexed: 01/01/2023]
Affiliation(s)
- F. Khajali
- Department of Animal Science; Shahrekord University; Shahrekord Iran
| | - R. F. Wideman
- Department of Poultry Science; University of Arkansas; Fayetteville AR USA
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11
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Wideman RF, Rhoads DD, Erf GF, Anthony NB. Pulmonary arterial hypertension (ascites syndrome) in broilers: a review. Poult Sci 2013; 92:64-83. [PMID: 23243232 DOI: 10.3382/ps.2012-02745] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) syndrome in broilers (also known as ascites syndrome and pulmonary hypertension syndrome) can be attributed to imbalances between cardiac output and the anatomical capacity of the pulmonary vasculature to accommodate ever-increasing rates of blood flow, as well as to an inappropriately elevated tone (degree of constriction) maintained by the pulmonary arterioles. Comparisons of PAH-susceptible and PAH-resistant broilers do not consistently reveal differences in cardiac output, but PAH-susceptible broilers consistently have higher pulmonary arterial pressures and pulmonary vascular resistances compared with PAH-resistant broilers. Efforts clarify the causes of excessive pulmonary vascular resistance have focused on evaluating the roles of chemical mediators of vasoconstriction and vasodilation, as well as on pathological (structural) changes occurring within the pulmonary arterioles (e.g., vascular remodeling and pathology) during the pathogenesis of PAH. The objectives of this review are to (1) summarize the pathophysiological progression initiated by the onset of pulmonary hypertension and culminating in terminal ascites; (2) review recent information regarding the factors contributing to excessively elevated resistance to blood flow through the lungs; (3) assess the role of the immune system during the pathogenesis of PAH; and (4) present new insights into the genetic basis of PAH. The cumulative evidence attributes the elevated pulmonary vascular resistance in PAH-susceptible broilers to an anatomically inadequate pulmonary vascular capacity, to excessive vascular tone reflecting the dominance of pulmonary vasoconstrictors over vasodilators, and to vascular pathology elicited by excessive hemodynamic stress. Emerging evidence also demonstrates that the pathogenesis of PAH includes characteristics of an inflammatory/autoimmune disease involving multifactorial genetic, environmental, and immune system components. Pulmonary arterial hypertension susceptibility appears to be multigenic and may be manifested in aberrant stress sensitivity, function, and regulation of pulmonary vascular tissue components, as well as aberrant activities of innate and adaptive immune system components. Major genetic influences and high heritabilities for PAH susceptibility have been demonstrated by numerous investigators. Selection pressures rigorously focused to challenge the pulmonary vascular capacity readily expose the genetic basis for spontaneous PAH in broilers. Chromosomal mapping continues to identify regions associated with ascites susceptibility, and candidate genes have been identified. Ongoing immunological and genomic investigations are likely to continue generating important new knowledge regarding the fundamental biological bases for the PAH/ascites syndrome.
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Affiliation(s)
- R F Wideman
- Department of Poultry Science, University of Arkansas, FAyetteville 72701, USA.
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12
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Saedi M, Khajali F. Blood gas values and pulmonary hypertension as affected by dietary sodium source in broiler chickens reared at cool temperature in a high-altitude area. Acta Vet Hung 2010; 58:379-88. [PMID: 20713328 DOI: 10.1556/avet.58.2010.3.10] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
One hundred and twenty day-old male chicks (Ross 308) reared at a cool temperature at high altitude were subjected to the following two treatments in a completely randomised design: (1) a group for which the sodium requirements were supplied by sodium chloride from day-old age and regarded as control, (2) a group similar to the control but for which 50% of the sodium requirements was supplied by sodium bicarbonate from day-old age. Provision of sodium equally from NaCl and NaHCO₃ significantly (P < 0.05) increased the partial pressure of oxygen and the saturation of haemoglobin with oxygen, and significantly (P < 0.05) decreased the heterophil to lymphocyte ratio. The right ventricle to total ventricles ratio shifted to lower values as a result of substituting NaHCO₃ for NaCl as a sodium source. Growth performance and carcass characteristics were not affected significantly by the dietary sodium source.
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Affiliation(s)
- Mostafa Saedi
- 1 Shahrekord University Department of Animal Science 88186-34141 Shahrekord Iran
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13
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Closter A, van As P, Groenen M, Vereijken A, van Arendonk J, Bovenhuis H. Genetic and phenotypic relationships between blood gas parameters and ascites-related traits in broilers. Poult Sci 2009; 88:483-90. [DOI: 10.3382/ps.2008-00347] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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14
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Ejaz S, Kim BS, Lim CW. Gout Induced by Intoxication of Sodium Bicarbonate in Korean Native Broilers. Drug Chem Toxicol 2008; 28:245-61. [PMID: 15865264 DOI: 10.1081/dct-52559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Gout is a metabolic disorder that results in hyperuricemia and the deposition of positively birefringent monosodium urate crystals in various parts of the body. Intoxication of sodium bicarbonate (SBC) for 35 days in Korean native broilers was investigated. Sixty birds, aged 2 weeks, divided into 5 groups were exposed to excess SBC: 2 g/L (group A), 7.5 g/L (group B), 20 g/L (group C), 40 g/L (group D). Toxicopathological examination of all exposed birds revealed the manifestation of visceral and articular gout in group C, while birds of group D showed acute kidney damage with manifestation of excessive visceral gout. Interestingly, few birds in group D also showed signs of rare condition of acute articular gout. Dose-dependent increments in erythrocytic count, hematocrit values, and hemoglobin levels of the exposed birds were observed. Hypernatremia, hyperuricemia, hypokalemia, and hypochloremia were common findings among exposed birds. Microscopic examination of birds that manifested visceral gout revealed significant urate deposit, tubular necrosis, and tophi formation in renal interstitium. These findings provide a pathophysiological link that SBC intoxication may support hyperuricemia, which is an independent risk factor for gout and other renal dysfunctions. Further study is required to delineate the effect of lowering uric acid on progression of gout and other renal diseases.
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Affiliation(s)
- Sohail Ejaz
- Biosafety Research Institute, Chonbuk National University, Jeonju, South Korea
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15
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Guo X, Huang K, Chen F, Luo J, Pan C. High Dietary Calcium Causes Metabolic Alkalosis in Egg-Type Pullets. Poult Sci 2008; 87:1353-7. [DOI: 10.3382/ps.2008-00058] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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16
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Baghbanzadeh A, Decuypere E. Ascites syndrome in broilers: physiological and nutritional perspectives. Avian Pathol 2008; 37:117-26. [DOI: 10.1080/03079450801902062] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Li C, Ford ES. Definition of the Metabolic Syndrome: What's New and What Predicts Risk? Metab Syndr Relat Disord 2006; 4:237-51. [DOI: 10.1089/met.2006.4.237] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Chaoyang Li
- Division of Adult and Community Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Earl S. Ford
- Division of Adult and Community Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
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18
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Sandercock DA, Hunter RR, Mitchell MA, Hocking PM. Thermoregulatory capacity and muscle membrane integrity are compromised in broilers compared with layers at the same age or body weight. Br Poult Sci 2006; 47:322-9. [PMID: 16787856 DOI: 10.1080/00071660600732346] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
1. The effects of acute heat stress (2 h at 32 degrees C and 75% RH) on body temperature and indices of respiratory thermoregulation and skeletal muscle function were examined in two divergently selected male grandparent lines of broiler and layer-type chickens at two ages (35 and 63 d), or at a similar body weight (approximately 2.2 kg). 2. The two chicken lines exhibited markedly different baseline blood acid-base and skeletal muscle characteristics. At the same age or live weight, birds from the broiler line had significantly higher venous blood carbon dioxide tensions associated with lower blood pH. Plasma creatine kinase (CK) activities reflecting muscle membrane damage were also greatly elevated in the broiler line. 3. Exposure to acute heat stress caused an increase in deep body temperature, panting-induced acid-base disturbances and elevated plasma CK activity in both lines of chicken, an effect that increased with age. The extent of disturbances in acid-base regulation and heat-stress-induced myopathy were more pronounced in the broiler than the layer line at the same age or similar live weights. 4. It is suggested that genetic selection for high muscle growth in broiler lines has compromised their capacity to respond to an acute thermal challenge, leading to detrimental consequences for muscle function. This reduction in heat tolerance may have important implications for bird welfare and subsequent meat quality.
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de los SFS, Tellez G, Farnell MB, Balog JM, Anthony NB, Pavlidis HO, Donoghue AM. Hypobaric hypoxia in ascites resistant and susceptible broiler genetic lines influences gut morphology. Poult Sci 2005; 84:1495-8. [PMID: 16206574 DOI: 10.1093/ps/84.9.1495] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Genetic selection based on rapid growth rates, improved feed conversion, and increased body weights has led to a predisposition to ascites in broiler populations. Sire-family selection was applied to a commercial elite line to produce divergent lines of ascites-resistant (RES) and ascites-susceptible (SUS) broilers by the 8th generation. One objective of this research was to determine the effects of hypobaric hypoxia on gut morphology in these genetic lines. In two separate trials, pedigree broiler chickens were randomly assigned to cages in a hypobaric chamber (simulated 2,900 m above sea level) or a matching local altitude chamber (390 m above sea level). Ascites incidence was characterized by heart enlargement and fluid accumulation in the abdominal cavity. At the end of the study on d 42, all surviving birds were killed and evaluated for the presence of ascites and 2-cm sections from the duodenum and lower ileum were collected from 5 chickens per line, per altitude for each trial for morphometric analysis. At a high altitude, ascites incidence was lower in the RES line (20.9 and 3.7%) than in the SUS line (86.4 and 66.9%, Trials 1 and 2, respectively). No ascites was observed at a local altitude. Under hypoxic conditions, duodenum villus surface area was higher (P < 0.05) in the RES line (181.3 +/- 16.8 and 219 +/- 10.9 microm) compared with the SUS line (130.1 +/- 10.5 and 134.3 +/- 9.3 microm; Trials 1 and 2, respectively). No differences in ileum villus morphology were observed for any of the parameters measured. The reduced surface area in the duodenum of birds selected for ascites susceptibility suggests reduced enteric function and may provide clues as to why these birds have increased incidence of ascites.
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Solis de los Santos F, Farnell MB, Téllez G, Balog JM, Anthony NB, Torres-Rodriguez A, Higgins S, Hargis BM, Donoghue AM. Effect of prebiotic on gut development and ascites incidence of broilers reared in a hypoxic environment. Poult Sci 2005; 84:1092-100. [PMID: 16050126 DOI: 10.1093/ps/84.7.1092] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Modern broilers have been genetically selected for an increased growth rate and improved feed conversion, but they are also more susceptible to ascites. Ascites occurs when there is an imbalance between available oxygen and the oxygen demand of the broiler. We hypothesized that promoting neonatal gut development with a prebiotic, such as Aspergillus meal (Prebiotic-AM), would enhance gut efficiency, decrease the oxygen demand of the gut, and reduce ascites incidence. In this study, we compared the effect of Prebiotic-AM on ascites incidence and gut development in commercial broilers reared at a local altitude (390 m above sea level) and a simulated high altitude (2,900 m above sea level). Half of the birds received a National Research Council recommended corn-soybean ration, and the other half received the same ration supplemented with 0.2% Prebiotic-AM. These 2 groups were further divided into a local altitude group and a simulated high altitude group for a total of 4 treatment combinations. Tissues were collected on d 1, 3, 7, 14, and 21 from the duodenum and lower ileum and placed in 10% buffered formalin for morphometric analysis. At a simulated high altitude, ascites incidence was 68% for birds fed the Prebiotic-AM supplement compared with 92% ascites incidence in birds given the control feed. The simulated high altitude decreased (P < 0.05) gut development, but prebiotic-treated birds reared in hypoxic conditions had similar gut development to control birds reared at local altitude. These data suggest that a feed ration supplemented with Prebiotic-AM may reduce the effect of hypoxia on broiler gut development and ascites incidence.
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Affiliation(s)
- F Solis de los Santos
- Poultry Production and Product Safety Research Unit, Agricultural Research Service, United States Department of Agriculture, Fayetteville, Arkansas 72701, USA
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Taylor RL. Major histocompatibility (B) complex control of responses against Rous sarcomas. Poult Sci 2004; 83:638-49. [PMID: 15109061 DOI: 10.1093/ps/83.4.638] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The chicken major histocompatibility (B) complex (MHC) affects disease outcome significantly. One of the best characterized systems of MHC control is the response to the oncogenic retrovirus, Rous sarcoma virus (RSV). Genetic selection altered the tumor growth pattern, either regressively or progressively, with the data suggesting control by one or a few loci. Particular MHC genotypes determine RSV tumor regression or progression indicating the crucial B complex role in Rous sarcoma outcome. Analysis of inbred lines, their crosses, congenic lines, and noninbred populations has revealed the anti-RSV response of many B complex haplotypes. Tumor growth disparity among lines identical at the MHC but differing in their background genes suggested a non-MHC gene contribution to tumor fate. Genetic complementation in tumor growth has also been demonstrated for MHC and non-MHC genes. RSV tumor expansion reflects both tumor cell proliferation and viral replication generating new tumor cells. In addition, the B complex controls tumor growth induced by a subviral DNA construct encoding only the RSV v-src oncogene. Immunity to subsequent tumors and metastasis also exhibit MHC control. Genotypes that regressed either RSV or v-src DNA primary tumors had enhanced protection against subsequent homologous challenge. Regressor B genotypes had lower tumor metastasis compared with progressor types. Together, the data indicate that B complex control of RSV tumor fate is strongly defined by the response to a v-src-determined function. Differential RSV tumor outcomes among various B genotypes may include immune recognition of a tumor-specific antigen or immune system influences on viral replication.
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Affiliation(s)
- R L Taylor
- Department of Animal and Nutritional Sciences, University of New Hampshire, Durham, NH 03824, USA.
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