冷季牧场肉牛的能量补充-数据库分析

IF 0.8 4区 农林科学 Q3 AGRONOMY Ciencia Rural Pub Date : 2023-02-27 DOI:10.1590/0103-8478cr20220182
A. C. Martini, Fernando Forster Furquim, C. C. Domingues, P. Severo, T. L. Bergoli, M. G. Rocha, L. Pötter
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引用次数: 0

摘要

摘要:汇总数据分析是一种综合多个研究结果的分析方法。这种技术对调查的效果提供了更可靠的估计。我们对1999年至2017年期间在巴西南大德州圣玛丽亚联邦大学开展的17项实验进行了数据库分析,以表征在冬季牧场补充或不补充替代小牛的情况下,每个地区的个体表现和放养率。数据被分为两组:提供和不提供能量补充,并根据补充水平分为五个亚组。两组犊牛在饲料生物量和叶片量相近的条件下维持。统计分析是使用一个“meta”包在R软件上运行的。补饲可使平均日增重和体况评分分别提高11.1%和20.0%。饲粮添加水平高于体重的1.2%时,单面增重较高,放养率随饲粮添加水平的增加而增加。
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Energy supplements for beef heifers on cool season pastures - a database analysis
ABSTRACT: Pooled data analysis is an analytical method that combines results from multiple studies. This technique provides a more robust estimate of the effects of an investigation. We performed a database analysis from seventeen experiments developed at Federal University of Santa Maria, Rio Grande do Sul state, Brazil, between 1999 and 2017 to characterize individual performance per area and stocking rate with or without supplementation of replacement heifers grazing winter pastures. Data were separated into two groups: with and without energy supplement provision, and into five subgroups based on supplement levels. Heifers from both groups were maintained under similar forage biomass and leaf blade allowance. Statistical analyses were run on R software using a ‘meta’ package. Supplement supply increased average daily gain and gain of body condition scores by 11.1% and 20.0%, respectively. Supplement levels higher than 1.2% of body weight resulted in higher weight gain per area, with the stocking rate increasing with higher supplement levels.
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来源期刊
Ciencia Rural
Ciencia Rural AGRONOMY-
CiteScore
1.70
自引率
0.00%
发文量
233
审稿时长
2-4 weeks
期刊介绍: The purpose of Ciência Rural is to publish the results of original research, note and reviews which contribute significantly to knowledge in Agricultural Sciences. Preference will be given to original articles that develop news concepts or experimental approaches and are not merely repositories of scientific data. The decison of acceptance for publication lies with the Editors and is based on the recommendations of Editorial Comission, Area Committee and/ or ad hoc reviewers. The editors and reviewers are external to the institution.
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