Withdrawal of antibiotic growth promoters from broiler diets: performance indexes and economic impact.
Withdrawal of antibiotic growth promoters from broiler diets: performance indexes and economic impact.
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DOI：
10.3382/ps/pez536
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发表时间：
2019-12-01
期刊：
影响因子：
4.4
通讯作者：
Machado Leal Ribeiro A
中科院分区：
文献类型：
--
作者：
Maria Cardinal K;Kipper M;Andretta I;Machado Leal Ribeiro A
本研究旨在评估停用抗生素生长促进剂（AGP）对肉鸡生产和经济的影响。收集了肉鸡（从初始阶段到最终阶段）饲粮中添加或不添加AGP （AGP+/AGP−）的索引出版物，并将采食量、增重和饲料转化率的结果汇编到数据库中。按照顺序分析进行meta分析：图形法（观察生物学数据的一致性）、相关性法（确定相关因素）和方差协方差法（比较组）。以巴西肉鸡年屠宰数、各阶段目标增重和饲料转化率、饲料转化率变化、饲料成本和AGP成本为指标，建立模型估算AGP退出对饲养成本的影响。该数据库包括174篇科学论文，包含183个实验，共计121643只肉鸡，其中大部分是罗斯（52%的研究）。数据库中最常见的AGP来源/形式是阿维拉霉素（占AGP+治疗的41%）、黄霉素（19%）、弗吉尼亚霉素（16%）和杆菌肽（14%）。在初始阶段（1 ~ 21 D）， AGP+饲粮的采食量、增重和饲料系数均显著提高（P < 0.05）。在最后阶段（22至42 D），没有观察到性能变量的差异。全期（1 ~ 42 D） AGP+处理的增重较高，饲料系数较好。阿维拉霉素和黄霉素可提高饲料转化率（P < 0.05）；维吉尼亚霉素提高了体重增加和饲料转化率。在整个期间，每头动物的经济影响为0.03美元，每年总计为183,560,232美元。由此可见，AGP+饲粮比AGP -饲粮具有更高的增重和饲料系数，停用AGP增加了生产成本。
This study aimed to estimate the productive and economic impacts caused by the withdrawal of antibiotic growth promoters (AGP) from broilers diet. Indexed publications that compared diets with or without AGP (AGP+/AGP−) for broilers (from initial to final phase) were collected and the results of feed intake, weight gain, and feed conversion were compiled in a database. A meta-analysis was performed following sequential analyses: graphical approach (to observe biological data coherence), correlation (to identify related factors), and variance-covariance (to compare groups). The annual number of broiler slaughtered in Brazil, target weight gain and feed conversion for each phase, the variation in feed conversion, feed cost, and AGP costs were used to build a model to estimate the effects of the AGP withdrawal on feeding costs. The database comprised 174 scientific articles containing 183 experiments, totaling 121,643 broilers, most of which were Ross (52% of the studies). The most frequent AGP sources/forms in the database were Avilamycin (41% of the AGP+ treatments), Flavomycin (19%), Virginiamycin (16%), and Bacitracin (14%). Higher feed intake, weight gain, and lower feed conversion were attributed (P < 0.05) to AGP+ diets during Initial phase (1 to 21 D). In Final phase (22 to 42 D) no differences were observed in performance variables. Treatments AGP+ presented higher weight gain and better feed conversion in the Total period (1 to 42 D). The results of feed conversion were improved (P < 0.05) with Avilamycin and Flavomycin; Virginiamycin improved weight gain and feed conversion. In the Total period, the economic impact was $0.03 per animal and a total of $183,560,232 per year. It was concluded that broilers fed AGP+ diets have higher weight gain and better feed conversion than those fed AGP− diets, and withdrawing AGP increases production costs.
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DOI：
10.1590/s1516-35982007000900011
发表时间：
2007-12-01
期刊：
Revista Brasileira de Zootecnia
影响因子：
--
作者：
Carvalho, Amanda d'Ávila;Lovatto, Paulo Alberto;Zanella, Irineo
通讯作者：
Zanella, Irineo
影响因子：
3.7
作者：
Costa MC;Bessegatto JA;Alfieri AA;Weese JS;Filho JA;Oba A
通讯作者：
Oba A
影响因子：
4.4
作者：
Gelaude, P.;Schlepers, M.;Dewulf, J.
通讯作者：
Dewulf, J.
影响因子：
4.2
作者：
Knarreborg, A;Lauridsen, C;Jensen, SK
通讯作者：
Jensen, SK
影响因子：
3.6
作者：
Geyra, A;Uni, Z;Sklan, D
通讯作者：
Sklan, D