Comparison of the effects of slow-release urea vs conventional urea supplementation on some finishing cattle parameters: A meta-analysis
| Autor: | Lucas Milani, Jullia Sehorek Teixeira, Rangel Fernandes Pacheco, Diego Soares Machado, Alexandra Fabielle Pereira Viana |
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| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
General Veterinary 0402 animal and dairy science 04 agricultural and veterinary sciences Random effects model 040201 dairy & animal science Feed conversion ratio Confidence interval 03 medical and health sciences chemistry.chemical_compound 030104 developmental biology Animal science chemistry Strictly standardized mean difference Meta-analysis Feedlot Urea Animal Science and Zoology Dry matter Mathematics |
| Zdroj: | Livestock Science. 250:104549 |
| ISSN: | 1871-1413 |
| Popis: | The aim of this study was to compare between the effects of slow-release urea (SRU) versus conventional urea (CU) supplementation on some finishing cattle parameters through the meta-analysis method using published scientific data. Data were extracted from nine experiments involving 532 bovines, 259 of which received CU and 273 who received SRU. When preparing the database, the applied sample unit was the average response for each article. Data from peer-reviewed articles published in indexed journals including the finishing phase of feedlot feeding were used. Furthermore, only studies applying conventional urea as a control group tested against slow-release urea and reporting the mean and variability of dry matter intake (DMI), average daily gain (ADG), feed conversion (FC), hot carcass weight (HCW) and subcutaneous fat thickness (SFT) were included in the meta-analysis. The effect size for all parameters was calculated as mean difference (MD) or standardized mean difference (SMD) with a 95% confidence interval and heterogeneity determined by the Q test and I2 statistics. A meta-analysis of random effects was conducted when I2 > 50% and fixed effects with I2 |
| Databáze: | OpenAIRE |
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