Growth performance and meat quality of finishing pigs fed diets supplemented with antioxidants and organic acids in late summer

IF 1.4 4区农林科学 Q2 Agricultural and Biological Sciences

Animal Production Science Pub Date : 2024-08-26 DOI:10.1071/an23313

Hieu H. Le, Robert Hewitt, Sally Tritton, Darryl Nicholas D’Souza, Majid Shakeri, Yasir Iqbal, Minh Ha, Robyn D. Warner, Frank R. Dunshea, Jeremy J. Cottrell

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引用次数: 0

Abstract

Context

Heat stress compromises growth performance and meat quality and results in economic losses in pork production.

Aims

We investigated the effects of supranutritional levels of selenium (Se) and vitamin E (VitE), along with organic acid blends, on the growth performance and meat quality of finishing pigs over a period of weeks during late summer to early autumn in Westbrook, Queensland, Australia.

Methods

A total of 264 crossbred pigs (25.8 ± 2.4 kg, mean ± s.d.) at 11 weeks of age were randomly assigned in a 2 × 2 × 2 factorial design with two aging times (2 or 5 days) nested within each pig. The factors included antioxidants (Se/E, with recommended or supranutritional doses of Se and VitE), an organic acids (OA) blend added to drinking water (control vs supplemented), and sex (female vs male).

Key results

Between 16 and 18 weeks of age, high Se/E decreased daily feed intake (P = 0.010) but had no effects on average daily gain or feed conversion efficiency (FCE). Male pigs grew faster (P = 0.040) and had a higher FCE than females (P = 0.050). Supplementation with OA increased FCE in males but not females (OA × Sex interaction, P = 0.035). Between Weeks 16 and 20, male pigs grew faster (P < 0.001), tended to eat more (P = 0.057), and had higher FCE (P = 0.002) than females (P < 0.001). There were no main effects of Se/E or OA on meat quality, except protein oxidation was reduced by high Se/E (P = 0.047). Sex impacted only Warner-Bratzler shear force (WBSF), with male pigs having lower WBSF than females (P = 0.053). Meat aging decreased WBSF (P < 0.001), but it increased cooking loss (P = 0.036), myofibrillar fragmentation index (P < 0.001), lipid oxidation (P < 0.001) and colour parameters (P < 0.001 for all).

Conclusions

Supplementation with Se/E for up to 10 weeks and OA for 5 weeks did not influence production parameters or pork quality in late summer, except that high Se/E decreased protein oxidation, and significant heat stress conditions were not experienced as expected.

Implications

Supplementation with Se/E and OA may be effective when environmental temperatures are higher.

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夏末饲喂添加了抗氧化剂和有机酸的日粮的育肥猪的生长性能和肉质

背景热应激会影响猪的生长性能和肉质，并导致猪肉生产的经济损失。目的我们研究了在澳大利亚昆士兰州韦斯特布鲁克夏末至初秋的数周内，超营养水平的硒（Se）和维生素 E（VitE）以及有机酸混合物对育成猪生长性能和肉质的影响。方法将 264 头 11 周龄的杂交猪（25.8 ± 2.4 千克，平均值 ± 标准差）随机分配到一个 2 × 2 × 2 的因子设计中，每头猪有两个老化时间（2 天或 5 天）。因素包括抗氧化剂（Se/E，Se 和 VitE 的推荐剂量或超营养剂量）、添加到饮用水中的有机酸（OA）混合物（对照组 vs 补充组）以及性别（雌性 vs 雄性）。主要结果16-18周龄期间，高Se/E会降低日采食量（P = 0.010），但对平均日增重或饲料转化效率（FCE）没有影响。与雌性猪相比，雄性猪生长速度更快（P = 0.040），饲料转化效率更高（P = 0.050）。补充 OA 可提高公猪的 FCE，但不能提高母猪的 FCE（OA × 性别交互作用，P = 0.035）。在第 16 周和第 20 周之间，公猪比母猪长得快（P < 0.001）、吃得多（P = 0.057）、FCE 高（P = 0.002）（P < 0.001）。Se/E或OA对肉质没有主要影响，但高Se/E会降低蛋白质氧化（P = 0.047）。性别只影响华氏剪切力（WBSF），公猪的 WBSF 比母猪低（P = 0.053）。肉的老化会降低 WBSF（P < 0.001），但会增加蒸煮损失（P = 0.036）、肌纤维破碎指数（P < 0.001）、脂质氧化（P < 0.001）和色泽参数（P < 0.001）。结论补充 Se/E 长达 10 周和 OA 5 周不会影响夏末的生产参数或猪肉质量，只是高 Se/E 会降低蛋白质氧化，而且没有出现预期的显著热应激条件。意义当环境温度较高时，补充 Se/E 和 OA 可能有效。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Animal Production Science Agricultural and Biological Sciences-Food Science

CiteScore

3.00

自引率

7.10%

发文量

139

审稿时长

3-8 weeks

期刊介绍： Research papers in Animal Production Science focus on improving livestock and food production, and on the social and economic issues that influence primary producers. The journal (formerly known as Australian Journal of Experimental Agriculture) is predominantly concerned with domesticated animals (beef cattle, dairy cows, sheep, pigs, goats and poultry); however, contributions on horses and wild animals may be published where relevant. Animal Production Science is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.