Nutrition of lambs with chromium propionate and its effects on metabolism, performance and meat quality

IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Small Ruminant Research Pub Date : 2024-06-22 DOI:10.1016/j.smallrumres.2024.107306
Bruna Moreira Maioli , Mariana Gudrun Ribeiro , Amanda de Carvalho , Leticia Aline Gonçalves , Daniela Lázara de Almeida , André Luis do Valle de Zoppa , Paulo Roberto Leme , João Alberto Negrão , Sarita Bonagurio Gallo
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Abstract

This study aimed to evaluate the effects of two additional doses of chromium propionate on performance, carcass characteristics and meat quality, bone density and metabolites. A total of 29 uncastrated male lambs were divided into 3 treatments: CTL, no chromium added; Cr0.5, 0.5 mg/kg of DM; and Cr1.5, 1.5 mg/kg of DM. The experimental period lasted for 64 days during which blood samples were taken for biochemical analysis, the animals were weighed for performance evaluation, and individual and daily feed consumption were monitored. At slaughter, data were collected to evaluate carcass and meat characteristics, viscera, and femur weight for bone density. The experimental design was completely randomized with means compared by the Tukey test at 5 % probability. The inclusion of chromium propionate increased dry matter intake (P<0.0001), decreased feed efficiency (P=0.0002), and increased Cr concentration in the meat (P=0.0341). The cholesterol (P=0.0023) and phosphorus (P=0.0213) were lower in Cr0.5, and alkaline phosphatase decreased linearly (P=0.0274). Cr improved the parameters of total leukocytes (P=0.0126), lymphocytes (P=0.0476), and monocytes (P = 0.0058). No effect of Cr was observed on carcass characteristics, commercial cuts, meat quality, viscera, and femur density. Supplementation with 0.5 mg of chromium propionate positively affected the immune system of lambs in feedlots, increasing the amount of chromium in the meat. However, above this amount may reduce dry matter intake and feed efficiency.

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羔羊丙酸铬营养及其对新陈代谢、生产性能和肉质的影响
本研究旨在评估两种额外剂量的丙酸铬对羔羊生产性能、胴体特征、肉质、骨密度和代谢物的影响。共有 29 只未阉割的雄性羔羊被分为 3 个处理:CTL,不添加铬;Cr0.5,0.5 mg/kg DM;Cr1.5,1.5 mg/kg DM。实验期为 64 天,在此期间采集血液样本进行生化分析,称重以评估动物的生产性能,并监测个体和每日饲料消耗量。屠宰时,收集数据以评估胴体和肉质特征、内脏和股骨重量以确定骨密度。实验设计为完全随机设计,采用概率为 5 % 的 Tukey 检验比较平均值。添加丙酸铬可增加干物质摄入量(P<0.0001),降低饲料效率(P=0.0002),增加肉中铬的浓度(P=0.0341)。Cr0.5的胆固醇(P=0.0023)和磷(P=0.0213)含量较低,碱性磷酸酶呈线性下降(P=0.0274)。铬酸盐改善了白细胞总数(P=0.0126)、淋巴细胞(P=0.0476)和单核细胞(P=0.0058)的参数。铬对胴体特征、商品肉、肉质、内脏和股骨密度没有影响。补充 0.5 毫克丙酸铬对饲养场羔羊的免疫系统有积极影响,可增加肉中的铬含量。然而,超过这一用量可能会降低干物质摄入量和饲料效率。
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来源期刊
Small Ruminant Research
Small Ruminant Research 农林科学-奶制品与动物科学
CiteScore
3.10
自引率
11.10%
发文量
210
审稿时长
12.5 weeks
期刊介绍: Small Ruminant Research publishes original, basic and applied research articles, technical notes, and review articles on research relating to goats, sheep, deer, the New World camelids llama, alpaca, vicuna and guanaco, and the Old World camels. Topics covered include nutrition, physiology, anatomy, genetics, microbiology, ethology, product technology, socio-economics, management, sustainability and environment, veterinary medicine and husbandry engineering.
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