The quality and nutritional value of beef from Angus steers fed different levels of humate (K Humate S100R)

IF 1.9 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Veterinary and Animal Science Pub Date : 2024-04-23 DOI:10.1016/j.vas.2024.100355

Forough Ataollahi, John W. Piltz, Geoff R. Casburn, Benjamin W.B. Holman

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Abstract

This study compared the effect of four levels of K Humate S100R (potassium humate) supplementation on the quality, shelf-life, and nutritional properties of beef. Angus steers (n = 40) were individually housed and fed either 0, 35, 70, or 140 g K Humate S100R/animal/day for 100 days, following a 30 day adjustment period. The steers were slaughtered at the completion of the feeding study. The left m. longissimus lumborum (LL) was collected at 24 h post-mortem and aged for either 2 or 6 weeks before analysis. K Humate S100R supplementation did not affect beef drip loss, cooking loss, shear force, sarcomere length, ultimate pH, intramuscular fat content, or total volatile basic nitrogen concentrations (P > 0.05). Steers supplemented with 70 g/day K Humate S100R produced beef with higher a* values on Days 1 and 3 of retail display (P < 0.05). Beef mineral composition was unchanged by K Humate S100R supplementation (P > 0.05), but there were minor changes to the fatty acid profile. Specifically, the ratio of omega-6 to omega-3 (P < 0.05) and C20:2n-6 concentrations (P < 0.05) increased with supplementation level. Together, these results demonstrate no detrimental effects on beef quality and shelf-life as a result of K Humate S100R supplementation.

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饲喂不同腐植酸含量（K Humate S100R）的安格斯母牛的牛肉质量和营养价值

本研究比较了补充四种水平的 K Humate S100R（腐植酸钾）对牛肉质量、货架期和营养特性的影响。对安格斯小公牛（n = 40）进行单独饲养，每头小公牛/天喂食 0、35、70 或 140 克腐植酸钾 S100R，连续喂食 100 天，然后经过 30 天的调整期。饲喂研究结束后，这些阉牛被宰杀。在宰后 24 小时收集左侧腰长肌（LL），并在分析前陈化 2 或 6 周。补充 K Humate S100R 不会影响牛肉的滴水损失、蒸煮损失、剪切力、肌纤维长度、最终 pH 值、肌肉内脂肪含量或总挥发性碱基氮浓度（P > 0.05）。在零售展示的第 1 天和第 3 天，每天补充 70 克 K Humate S100R 的母牛生产的牛肉具有更高的 a* 值（P < 0.05）。补充 K Humate S100R 后，牛肉的矿物质组成没有变化（P >0.05），但脂肪酸组成发生了细微变化。具体来说，ω-6 与ω-3 的比例（P <0.05）和 C20:2n-6 的浓度（P <0.05）随着补充量的增加而增加。总之，这些结果表明，补充腐植酸 K S100R 不会对牛肉质量和货架期产生不利影响。

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来源期刊

Veterinary and Animal Science Veterinary-Veterinary (all)

CiteScore

3.50

自引率

0.00%

发文量

审稿时长

47 days