热带条件下泽西牛初乳的理化特性和糖度

Q2 Agricultural and Biological Sciences
E. G. S. O. Silva
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引用次数: 0

摘要

本研究的目的是评估泽西牛初乳的营养成分(脂肪、总蛋白、酪蛋白、脱脂干提取物、总固体和维生素A)、折射率和pH值,以及白利度与初乳成分之间的相关性。在产仔后的第五次挤奶中,从泽西奶牛身上采集了初乳样本。对样品进行鉴定并冷藏直至分析。对数据进行方差分析和描述性分析,同时使用SAS 9.0版软件程序通过Duncan检验比较牛奶之间的差异(P<0.05)。然后在Brix等级和牛初乳成分之间进行Pearson相关性。从第一次挤奶到第五次挤奶,初乳中的脂肪、总蛋白、酪蛋白、总固体和白利糖度百分比逐渐降低,而乳糖含量增加。Brix值与蛋白质、酪蛋白、总固体和脱脂干提取物含量呈正相关,而乳糖呈负相关。产后白利糖度均值和蛋白质浓度的快速降低表明了在出生后最短时间内给予初乳的重要性。©2021 Friends Science出版社
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physicochemical Characterization and Brix in Jersey Cow Colostrum in Tropical Conditions
The objective of this study was to evaluate the nutritional composition (fat, total protein, casein, defatted dry extract, total solids and vitamin A), refractometry and pH of Jersey cow colostrum and correlations between Brix degree and colostrum constituents. Colostrum samples were collected from Jersey cow in the fifth milking after calving. Samples were identified and refrigerated until analysis. Data were subjected to analysis of variance and a descriptive analysis, while differences between milk were compared by the Duncan’s test (P < 0.05) using the SAS version 9.0 software program. Pearson correlations were then performed between Brix grade and bovine colostrum constituents. The fat, total protein, casein, total solid and Brix percentage of the colostrum gradually decreased from the first to the fifth milking, while the lactose content increased. Positive correlations were observed between Brix values and protein, casein, total solids and defatted dry extract contents, while lactose was negatively correlated. The rapid reduction in Brix means and protein concentrations after delivery demonstrates the importance of administer colostrum in the shortest period after birth. © 2021 Friends Science Publishers
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来源期刊
International Journal of Agriculture and Biology
International Journal of Agriculture and Biology AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
1.70
自引率
0.00%
发文量
40
审稿时长
5 months
期刊介绍: Information not localized
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