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产前饮食对犊牛生产性能的影响及胎儿编程研究展望:一项荟萃分析调查

The Effects of Prenatal Diet on Calf Performance and Perspectives for Fetal Programming Studies: A Meta-Analytical Investigation.

作者信息

Barcelos Sandra de Sousa, Nascimento Karolina Batista, Silva Tadeu Eder da, Mezzomo Rafael, Alves Kaliandra Souza, de Souza Duarte Márcio, Gionbelli Mateus Pies

机构信息

Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, PA 68515-000, Brazil.

Department of Animal Science, Universidade Federal de Lavras, Lavras, MG 37200-900, Brazil.

出版信息

Animals (Basel). 2022 Aug 21;12(16):2145. doi: 10.3390/ani12162145.

Abstract

This meta-analysis aimed to identify knowledge gaps in the scientific literature on future fetal-programming studies and to investigate the factors that determine the performance of beef cows and their offspring. A dataset composed of 35 publications was used. The prenatal diet, body weight (BW), average daily gain (ADG) during pregnancy, and calf sex were elicited as possible modulators of the beef cows and their offspring performance. Then, the correlations between these variables and the outcomes of interest were investigated. A mixed multiple linear regression procedure was used to evaluate the relationships between the responses and all the possible explanatory variables. A knowledge gap was observed in studies focused on zebu animals, with respect to the offspring sex and the consequences of prenatal nutrition in early pregnancy. The absence of studies considering the possible effects promoted by the interactions between the different stressors' sources during pregnancy was also detected. A regression analysis showed that prenatal diets with higher levels of protein improved the ADG of pregnant beef cows and that heavier cows give birth to heavier calves. Variations in the BW at weaning were related to the BW at birth and calf sex. Therefore, this research reinforces the importance of monitoring the prenatal nutrition of beef cows.

摘要

本荟萃分析旨在找出未来胎儿编程研究科学文献中的知识空白,并调查决定肉牛及其后代性能的因素。使用了一个由35篇出版物组成的数据集。产前饮食、体重(BW)、孕期平均日增重(ADG)和犊牛性别被确定为肉牛及其后代性能的可能调节因素。然后,研究了这些变量与感兴趣结果之间的相关性。采用混合多元线性回归程序来评估反应与所有可能解释变量之间的关系。在关于瘤牛动物的研究中,在后代性别和孕早期产前营养的后果方面存在知识空白。还发现缺乏考虑孕期不同应激源之间相互作用可能产生的影响的研究。回归分析表明,蛋白质水平较高的产前饮食可提高怀孕肉牛的ADG,体重较重的母牛产下的犊牛体重也较重。断奶时BW的变化与出生时BW和犊牛性别有关。因此,本研究强化了监测肉牛产前营养的重要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cf5/9404886/26106ab61073/animals-12-02145-g001.jpg

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