Uso de suplemento energético para novilhas de corte em pastagens de estação fria -análise de banco de dados

Ciencia Rural

article

Amanda Carneiro Martini¹  Fernando Forster Furquim¹  Camille Carijo Domingues¹  Paula de Oliveira Severo¹  Tuani Lopes Bergoli¹  Marta Gomes da Rocha¹  Luciana Pötter¹ 

[1] Universidade Federal de Santa Maria

关键词: average daily gain;    meta-analysis;    ryegrass;    stocking rate;    supplement conversion;   

DOI  :  10.1590/0103-8478cr20220182

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

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.

【 授权许可】

Unknown