de Aquino Monteiro Gabriela Oliveira, Dos Santos Difante Gelson, Júnior Marcos Antonio Ferreira, da Silva Roberto Francisca Fernanda, Araújo Carolina Marques Costa, da Silva Hitalo Rodrigues, Santana Juliana Caroline Santos, Rodrigues Jéssica Gomes, Longhini Vanessa Zirondi, Ítavo Camila Celeste Brandão Ferreira, Ítavo Luís Carlos Vinhas
Department of Animal Science, Federal University of Mato Grosso Do Sul, Campo Grande, 79070-900, Mato Grosso Do Sul, Brazil.
Integrated Health Institute, Federal University of Mato Grosso Do Sul, Campo Grande, 79070900, Mato Grosso Do Sul, Brazil.
Trop Anim Health Prod. 2025 Feb 26;57(2):81. doi: 10.1007/s11250-025-04337-3.
This study aimed to summarize the main information from published studies on the effects of dietary supplementation on the ingestive behavior and consumption of grazing sheep and to support efficient feeding strategies. The guiding question formulated based on the PICOS strategy was: Does dietary supplementation influence the ingestive behavior and voluntary forage consumption of sheep kept on pasture? Four databases were used: SCOPUS (Elsevier), Web of Science (main collection), Science Direct (Elsevier), and CAB Direct, and the search was carried out from January to July 2023. Only complete research articles, available in full, well-designed, and published in any language, with no time frame, were considered. A total of 8,132 documents were retrieved and after applying the eligibility criteria, 7 were considered eligible and included in the final sample. 28.6% evaluated ingestive behavior for 24 uninterrupted hours, 28.6% for 12 h, 14.3% for 11 h, and 28.6% for 9 h evaluated. The interval for observing behavior was every five minutes for 42.9% and every 10 min for 57.1% of the studies. The studies that evaluated grazing, rumination, and idle time, only 14% evaluated supplement intake time and water drinking time, 43% evaluated the bite rate, and 29% the bite mass. Among the methods for estimating dry matter intake (DMI), the most used were chromium oxide and titanium dioxide (42.5% each), and the estimate by formula corresponded to 14.29%. It was observed that 57.14% of the studies were published in national journals, the most used animal breed was Santa Inês (42.85%), and the most evaluated grazing method was continuous (57.14%). The use of supplementation, as well as the different levels and types of ingredients, influenced the ingestive behavior and voluntary dry matter intake of grazing sheep. By increasing the level of supplementation, the substitutive associative effect of the animals also increases the consumption of the supplement to the detriment of the pasture. Providing concentrated supplements with ingredients that have lower fiber content and higher TDN alters ingestive behavior, with a decrease in grazing and rumination time and an increase in idle time.
本研究旨在总结已发表的关于日粮补充对放牧绵羊采食量和采食行为影响的研究的主要信息，以支持有效的饲养策略。基于PICOS策略提出的指导性问题是：日粮补充是否会影响放牧绵羊的采食行为和自愿采食量？使用了四个数据库：SCOPUS（爱思唯尔）、科学网（核心合集）、Science Direct（爱思唯尔）和CAB Direct，并于2023年1月至7月进行了检索。仅考虑完整的研究文章，要求全文可获取、设计良好且以任何语言发表，无时间限制。共检索到8132篇文献，应用纳入标准后，7篇被认为符合要求并纳入最终样本。28.6%的研究评估了24小时不间断的采食行为，28.6%评估12小时，14.3%评估11小时，28.6%评估9小时。42.9%的研究观察行为的间隔为每五分钟一次，57.1%为每十分钟一次。评估放牧、反刍和空闲时间的研究中，只有14%评估了补充料采食时间和饮水时间，43%评估了采食速率，29%评估了采食质量。在估计干物质采食量（DMI）的方法中，最常用的是氧化铬和二氧化钛（各占42.5%），通过公式估计的占14.29%。观察到57.14%的研究发表在国内期刊上，最常用的绵羊品种是圣伊内斯（42.85%），评估最多的放牧方式是连续放牧（57.14%）。补充料的使用以及不同的成分水平和类型会影响放牧绵羊的采食行为和自愿干物质采食量。通过提高补充料水平，动物的替代关联效应也会增加补充料的采食量，从而减少牧草采食量。提供纤维含量较低、总可消化养分（TDN）较高的浓缩补充料会改变采食行为，放牧和反刍时间减少，空闲时间增加。
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