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Li Y, Liu M, Kong Y, Guo L, Yu X, Yu W, Shen J, Wen K, Wang Z. Significantly improved detection performances of immunoassay for ractopamine in urine based on highly urea-tolerant rabbit monoclonal antibody. Food Chem Toxicol 2022; 168:113358. [PMID: 35964837 DOI: 10.1016/j.fct.2022.113358] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/21/2022] [Accepted: 08/06/2022] [Indexed: 10/16/2022]
Abstract
Highly sensitive and accurate screening of ractopamine (RAC) residue in animal urine is greatly needed to ensure food security. The detection performance of immunoassay for RAC was always seriously harmed by the antibody inactivation derived from urea. Here, we first discovered one rabbit monoclonal antibody (RmAb) to RAC with a high affinity of 0.007 ng mL-1 and a surprising urea tolerance of 3 M urea, which is beneficial for developing robustly developed immunoassay in urine without sample pretreatment. The limits of detection of developed indirect competitive enzyme-linked immunosorbent assay based on RmAb1 for RAC were 0.0042-0.014 μg L-1 with the coefficient of variation below 11.7% in swine, sheep, and cow urine, significantly improved 10-100-fold in sensitivity. Moreover, the urea-tolerant mechanism of RmAb1 showed that more non-polar amino acids, more hydrogen bond donors on the surface, and preponderant Pi interaction of antibody-RAC all contributed to the stability of the RmAb1 in a high concentration of urea.
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Affiliation(s)
- Yuan Li
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Minggang Liu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Yihui Kong
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Lina Guo
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Xuezhi Yu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Wenbo Yu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Jianzhong Shen
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Kai Wen
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Zhanhui Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, People's Republic of China.
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Teixeira ODES, Machado DS, Pereira LB, Reis NP, Domingues CC, Klein JL, Cattelam J, Nörnberg JL, Alves Filho DC, Brondani IL. Main altered characteristics in the meat of young cattle of different sexual conditions supplemented in tropical pasture. AN ACAD BRAS CIENC 2022; 94:e20210302. [PMID: 35920487 DOI: 10.1590/0001-3765202220210302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 10/01/2021] [Indexed: 11/22/2022] Open
Abstract
The aim was to identify the predominant variables in the differentiation of meat quality of cattle submitted to surgical castration, immunocastration, or non-castration and finished in a tropical pasture. Thirty-nine crossbred cattle were used and distributed in three treatments: i) surgical castration; ii) immunocastration; and iii) non-castration, with an initial mean age of 14.06±0.72 months and a mean weight of 284.10±31.40 kg. We used the principal component analysis to differentiate the qualitative meat characteristics between the treatments. Based on that analysis, we found that the first three principal components explained 71.44% of the total variation in the meat quality data, which ensures that the variation found is associated with the effect of the treatments. The characteristics correlated with the first three principal components and responsible for the discrimination between sexual conditions were subcutaneous fat thickness, instrumental meat color, cooking loss and shear force. These characteristics were similar among castrated animals, regardless of the methods. Therefore, immunological castration preserves the attributes of the meat and prevents possible damage to the physical and mental integrity of the animals. Finally, principal component analysis is an important methodology in the objective investigation of beef meat attributes.
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Affiliation(s)
- Odilene DE S Teixeira
- Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Diego S Machado
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, Campus Alegrete, RS-377, Km 27, Passo Novo, 97555-000 Alegrete, RS, Brazil
| | - Lucas B Pereira
- Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Nathália P Reis
- Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Camille C Domingues
- Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - John L Klein
- Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Jonatas Cattelam
- Programa de Pós-Graduação em Saúde, Bem-Estar e Produção Animal Sustentável na Fronteira Sul, Universidade Federal da Fronteira do Sul, Campus de Realeza, Avenida Edmundo Gaievski, 1000, Rodovia BR-182, Km 466, 85770-000 Realeza, PR, Brazil
| | - José L Nörnberg
- Universidade Federal de Santa Maria, Departamento de Tecnologia e Ciência dos Alimentos, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Dari C Alves Filho
- Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Ivan L Brondani
- Programa de Pós-Graduação em Zootecnia, Universidade Federal de Santa Maria, Departamento de Zootecnia, Campus Sede, Avenida Roraima, 1000, Cidade Universitária, Camobi, 97105-900 Santa Maria, RS, Brazil
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Caetano M, Goulart RS, Silva SL, Leme PR, Pflanzer SB, dos Santos ACR, Lanna DPD. Effects of the Duration of Zilpaterol Hydrochloride Supplementation and Days on Feed on Performance, Carcass Traits and Saleable Meat Yield of Nellore Bulls. Animals (Basel) 2021; 11:ani11082450. [PMID: 34438906 PMCID: PMC8388753 DOI: 10.3390/ani11082450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 12/02/2022] Open
Abstract
Simple Summary Zilpaterol hydrochloride (ZH) is a β-adrenergic agonist (βAA) to be feed to feedlot cattle at a rate of 8.3 mg/kg during the final 20 to 40 d of the finishing period followed by a minimum 3 d withdrawal period. This compound has the potential to increase animal performance, improve carcass weight and meat yield. Although significant information regarding the effects of duration of ZH supplementation and days on the feed of Bos taurus cattle has been provided, there is a lack of information relative to its effects on Bos indicus breeds such as Nellore cattle. The current study aimed to evaluate the effects of the duration of ZH supplementation and DOF on performance, carcass characteristics, and saleable meat yield of Nellore bulls. The HCW and total saleable meat yield linearly increased with the duration of ZH supplementation as well as when the length of the feedlot period increased. We recommend supplementing ZH for Nellore bulls at least for 20 days, independently of days on feed, to improve hot carcass weight, hindquarter, and saleable meat yields of Nellore bulls. Abstract This study evaluated the effects of the duration of ZH supplementation and days on feed (DOF) on performance, carcass characteristics, and saleable meat yield of Nellore young bulls. The fixed effects included the duration (0, 20, 30, or 40 d before slaughter plus a 3 d ZH withdrawal period—8.33 mg of ZH/kg of DM) and DOF (90 and 117 d). Feed efficiency (G:F) linearly increased when the duration of ZH supplementation increased (p < 0.01). Nellore bulls fed ZH had greater HCW (p < 0.01), dressing percentage (p < 0.01) and Longissimus muscle area (LMA) (p < 0.01), but less 12th-rib fat (p = 0.04) than the control group. The hot carcass weight (HCW) (p < 0.01), and dressing percentage increased linearly (p < 0.01) with the increase of duration of ZH supplementation. The HCW, ossification, and 12th-rib fat increased with DOF (p < 0.01). The ZH supplemented group had most of the individual cuts of hindquarters and total saleable meat increased compared with the control. Zilpaterol hydrochloride was effective in improving hot carcass weight, hindquarter, and saleable meat yields of Nellore bulls when fed for at least 20 d before slaughter, independently of days on feed.
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Affiliation(s)
- Mariana Caetano
- Davies Livestock Research Centre, Department of Animal and Veterinary Bioscience, School of Animal and Veterinary Sciences, Roseworthy Campus, The University of Adelaide, Roseworthy, SA 5371, Australia;
| | - Rodrigo S. Goulart
- Department of Animal Science, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (S.L.S.); (P.R.L.)
- Correspondence:
| | - Saulo L. Silva
- Department of Animal Science, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (S.L.S.); (P.R.L.)
| | - Paulo R. Leme
- Department of Animal Science, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (S.L.S.); (P.R.L.)
| | - Sérgio B. Pflanzer
- Department of Food Technology, Faculty of Food Engineering, The University of Campinas, Campinas 13083-862, SP, Brazil;
| | - Antonio C. R. dos Santos
- Department of Animal Science, College of Agriculture, University of São Paulo, Luiz de Queiroz, Piracicaba 13418-900, SP, Brazil; (A.C.R.d.S.); (D.P.D.L.)
| | - Dante P. D. Lanna
- Department of Animal Science, College of Agriculture, University of São Paulo, Luiz de Queiroz, Piracicaba 13418-900, SP, Brazil; (A.C.R.d.S.); (D.P.D.L.)
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Swanson RM, Tait RG, Galles BM, Duffy EM, Schmidt TB, Petersen JL, Yates DT. Heat stress-induced deficits in growth, metabolic efficiency, and cardiovascular function coincided with chronic systemic inflammation and hypercatecholaminemia in ractopamine-supplemented feedlot lambs. J Anim Sci 2020; 98:5840746. [PMID: 32428228 DOI: 10.1093/jas/skaa168] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 05/13/2020] [Indexed: 01/03/2023] Open
Abstract
Heat stress hinders growth and well-being in livestock, an effect that is perhaps exacerbated by the β1 agonist ractopamine. Heat stress deficits are mediated in part by reduced feed intake, but other mechanisms involved are less understood. Our objective was to determine the direct impact of heat stress on growth and well-being in ractopamine-supplemented feedlot lambs. Commercial wethers were fed under heat stress (40 °C) for 30 d, and controls (18 °C) were pair-fed. In a 2 × 2 factorial, lambs were also given a daily gavage of 0 or 60 mg ractopamine. Growth, metabolic, cardiovascular, and stress indicators were assessed throughout the study. At necropsy, 9th to 12th rib sections (four-rib), internal organs, and feet were assessed, and sartorius muscles were collected for ex vivo glucose metabolic studies. Heat stress increased (P < 0.05) rectal temperatures and respiration rates throughout the study and reduced (P < 0.05) weight gain and feed efficiency over the first week, ultrasonic loin-eye area and loin depth near the end of the study, and four-rib weight at necropsy. Fat content of the four-rib and loin were also reduced (P < 0.05) by heat stress. Ractopamine increased (P < 0.05) loin weight and fat content and partially moderated the impact of heat stress on rectal temperature and four-rib weight. Heat stress reduced (P < 0.05) spleen weight, increased (P < 0.05) adrenal and lung weights, and was associated with hoof wall overgrowth but not organ lesions. Ractopamine did not affect any measured indicators of well-being. Heat stress reduced (P < 0.05) blood urea nitrogen and increased (P < 0.05) circulating monocytes, granulocytes, and total white blood cells as well as epinephrine, TNFα, cholesterol, and triglycerides. Cortisol and insulin were not affected. Heat stress reduced (P < 0.05) blood pressure and heart rates in all lambs and increased (P < 0.05) left ventricular wall thickness in unsupplemented but not ractopamine-supplemented lambs. No cardiac arrhythmias were observed. Muscle glucose uptake did not differ among groups, but insulin-stimulated glucose oxidation was reduced (P < 0.05) in muscle from heat-stressed lambs. These findings demonstrate that heat stress impairs growth, metabolism, and well-being even when the impact of feed intake is eliminated by pair-feeding and that systemic inflammation and hypercatecholaminemia likely contribute to these deficits. Moreover, ractopamine improved muscle growth indicators without worsening the effects of heat stress.
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Affiliation(s)
- Rebecca M Swanson
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - Richard G Tait
- Bioinformatics and Biostatistics, Neogen GeneSeek, Lincoln, NE
| | - Beth M Galles
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE
| | - Erin M Duffy
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - Ty B Schmidt
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - Jessica L Petersen
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
| | - Dustin T Yates
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
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Martello LS, Antonelo DS, Cônsolo NRB, Pacheco VM, Negrão JA, Rosa AF, Leme PR, Sousa RV, da Luz Silva S. Welfare traits of Bos indicus cattle castrated immunologically and fed beta-adrenergic agonists. Anim Biosci 2020; 34:1552-1558. [PMID: 32299174 PMCID: PMC8495331 DOI: 10.5713/ajas.19.0986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 03/17/2020] [Indexed: 11/30/2022] Open
Abstract
Objective This work was carried out to evaluate the effects of zilpaterol hydrochloride (ZH) and ractopamine hydrochloride (RH) combined with immunocastration on the welfare traits of feedlot Nellore cattle. Methods Ninety-six Nellore males (average body weight [BW] = 409±50 kg; average 20 mo of age) were divided into two groups according to BW; half of the animals in each group received two doses of an immunocastration (ImC) vaccine in a 30 day interval, and the other half did not receive the vaccine (NoC). Afterward, the animals were housed and fed a common diet for 70 days. Then, they were split into three groups and fed one of the following diets for 30 additional days: control (CO) diet, with no β-AA; ZH diet, containing 80 mg/d ZH; and RH diet, containing 300 mg/d RH. Welfare traits were assessed by monitoring body surface temperature using infrared thermography (IRT) and plasma cortisol and temperament measurements. Results There was no interaction between sexual condition and diet for any trait. The ImC and NoC groups did not differ in rectal and ocular temperatures. The ImC animals had higher flight speeds (p = 0.022) and tended to have higher cortisol levels (p = 0.059) than the NoC animals. Animals fed ZH and RH did not differ in cortisol levels, respiratory rate, rectal temperature, temperature measured by IRT, or temperament behaviour. Conclusion The ImC animals showed a less stable temperament during handling practices than NoC, whereas ZH and RH supplementation had no adverse effects on animal welfare.
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Affiliation(s)
- Luciane Silva Martello
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
| | - Daniel Silva Antonelo
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
| | | | - Verônica Madeira Pacheco
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
| | - João Alberto Negrão
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
| | - Alessandra Fernandes Rosa
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
| | - Paulo Roberto Leme
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
| | - Rafael Vieira Sousa
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
| | - Saulo da Luz Silva
- College of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635900, Brazil
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Costa C, Brichi A, Millen D, Goulart R, Pereira I, Estevam D, Perdigão A, Martins C, Arrigoni M. Feedlot performance, carcass characteristics and meat quality of Nellore bulls and steers fed Zilpaterol hydrochloride. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mazon MR, Antonelo DS, Gómez JF, Nubiato KE, Balage JM, Silva HB, Tapp WN, Leme PR, Goulart RS, Fukumasu H, Johnson BJ, Pesce DM, Silva SL. Effects of combining immunocastration and β-adrenergic agonists on the meat quality of Nellore cattle. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Effects of immunocastration and a β-adrenergic agonist on retail cuts of feedlot finished Nellore cattle. Animal 2018; 12:1690-1695. [DOI: 10.1017/s1751731117003317] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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