怀孕奶牛体重和身体状况评分对后代胴体性状的影响:Meta分析

IF 0.7 4区 农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Sander Martinho Adams, Jon Klein, Diego Soares Machado, Dari Celestino Alves Filho, Ivan Luiz Brondani, Luiz Angelo Damian Pizzuti
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引用次数: 0

摘要

本荟萃分析的目的是评估肉牛妊娠第2和/或第3孕期体重变化对子代胴体某些参数的影响。计算奶牛在妊娠期的增重,以标准化处理:中度损失(ML=奶牛体重减轻0 ~ 5%)和中度增加(MG=奶牛体重增加0 ~ 5%)。所有参数的效应量以中差(MD)计算,95%置信区间和异质性使用Q检验和I2统计量确定。各指标分别作为中对照组和实验组进行随机效应meta分析。试验时间内奶牛体重变化对子代胴体性状无显著影响(P < 0.05)。然而,MG奶牛犊牛的热胴体重(P=0.15)和皮下脂肪厚度(P=0.10)均高于ML奶牛犊牛。然而,荟萃分析表明,在怀孕的后半期,奶牛体重的微小变化不会影响后代的胴体特征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Efecto del peso y la puntuación de la condición corporal de vacas gestantes en las características de la canal de su progenie: Meta análisis
The objective of the meta-analysis was to evaluate the effects of beef cows weight variation during the 2nd and / or 3rd trimester pregnancy on some parameters of the progeny carcass. The cow weight gain during this gestational period was calculated to standardize the treatments: moderate loss (ML= cows that lost 0 to 5 % of weight) and moderate gain (MG= cows that gained 0 to 5 % of weight). The effect size for all parameters was calculated as medium difference (MD) with a 95% confidence interval and heterogeneity determined using the Q test and the I2 statistic. A random effects meta-analysis was performed for each indicator separately as the medium control and experimental groups. The cow’s weight variation during the studied time variation did not influence the progeny carcass characteristics (P>0.05). Although, a trend towards greater hot carcass weight (P=0.15) and thickness of subcutaneous fat (P=0.10) was observed in calves from MG cows in relation to calves from ML cows. However, the meta-analysis demonstrated that small variations in cow weight during the final half of pregnancy do not affect progeny carcass characteristics.
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来源期刊
Revista Mexicana de Ciencias Pecuarias
Revista Mexicana de Ciencias Pecuarias AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
1.20
自引率
0.00%
发文量
93
审稿时长
>12 weeks
期刊介绍: The MEXICAN MAGAZINE OF SCIENCES PECUARIAS is an organ of scientific and technical diffusion of the livestock sector. Its periodicity is quarterly and arbitrated by pairs in the double-blind mode. Its objective is to make known the results of the research carried out by any scientific institution, in Mexico and in any part of the world, related to the livestock sciences, particularly those that refer to the different disciplines of Veterinary Medicine and Animal Science. The Journal is bilingual, publishes the complete articles in Spanish or English and is included in various indexing services and international dissemination platforms, such as the Index of Mexican Journals of Scientific and Technological Research of the National Council of Science and Technology (CONACYT); In the EBSCO Host database; In the Network of Scientific Journals of Latin America and the Caribbean, Spain and Portugal (RedALyC); In the Ibero-American Network of Scientific Journals of Free Access Veterinary Medicine. Indexed in the ISI Journal Citation Report Science Edition; And Elsevier''s SCOPUS and EMBASE indices.
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