不同铜源对保育猪生长性能的影响

IF 2.7 2区农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Journal of animal science Pub Date : 2025-05-20 DOI:10.1093/jas/skaf102.332

Daniel G Rosales, Ryan S Samuel, Eric M Weaver

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引用次数: 0

摘要

铜对猪的生长性能有重要影响，影响饲料效率和养分保留。最近的研究表明，铜的来源和浓度会显著影响平均日增重（ADG）和饲料系数等生长指标。本试验选用初断奶仔猪1144头（初始体重5.9±1.2 kg），研究饲粮中添加2种三碱式氯化铜（TBCC）和1种螯合铜（cCu）两种铜源对育幼猪生长性能的影响。采用体重封闭设计，44个猪圈每栏26头猪。每只猪栏被分配到四种饲粮处理中的一种，包括：1)对照（玉米-豆粕（SBM）饲粮，从TBCC中提供12 ppm的铜），2)对照+ TBCC #1提供150 ppm的铜，3)对照+ TBCC #1提供150 ppm的铜，4)对照+ TBCC #2提供150 ppm的铜。猪体重分别为2.5、5.5和16 kg，第1、2和3期分别饲喂12、9和14 d。根据喂料器顶部到饲料顶部的距离和饲料密度，使用校准曲线计算每周剩余饲料。此外，每周使用秤测量猪圈总重量，以捕获每个猪圈中所有猪的重量。在第一阶段（0-12 d）， ADG （200 vs 170 g/d）和ADFI （230 vs 210 g/d）得到改善(P <；0.01)。TBCC #1的增重：料重比（G:F）也显著高于对照组(0.82 vs 0.62；P = 0.02)。在第2期和第3期，无显著差异(P >；ADG、ADFI与G:F差异无统计学意义（0.05）。总的来说，在整个试验过程中，所有的铜补充剂都显示出相同的结果，彼此之间只有轻微的数值差异。由此可见，铜包合物增加采食量会影响猪的生长性能。

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PSIII-10 Effect of different copper sources on growth performances in nursery pigs

Copper plays a significant role in the growth performance of pigs, influencing feed efficiency and nutrient retention. Recent studies indicate that the source and concentration of copper can markedly affect growth metrics such as average daily gain (ADG) and feed conversion ratios. A total of 1,144 newly weaned pigs (initial body weight (BW) 5.9 ± 1.2 kg) were used to evaluate the effects of copper (Cu) supplementation from two tribasic copper chloride (TBCC) sources and one chelated copper (cCu) source on growth performance of nursery pigs. Pigs were blocked by BW and housed 26 pigs per pen in 44 pens in a randomized block design. Each pen was assigned to one of four dietary treatments within each block that consisted of: 1) Control (corn-soybean meal (SBM) diet which was formulated to provide 12 ppm of Cu from TBCC), 2) Control + TBCC #1 providing 150 ppm of Cu, 3) Control + cCu providing 150 ppm of Cu, and 4) Control + TBCC #2 providing 150 ppm of Cu. Pigs received 2.5, 5.5, and 16 kg and the feeding phases lasted 12, 9, and 14 days for Phases 1, 2, and 3, respectively. Feed remaining each week was calculated using a calibration curve based on the distance from the top of the feeder to the top of the feed and the feed density. Additionally, total pen weights were measured each week using a scale to capture the weight of all pigs in each pen. In Phase 1 (0-12 d), ADG (200 vs. 170 g/d) and ADFI (230 vs. 210 g/d) were improved (P < 0.01) by Cu compared to Control. Also, TBCC #1 had a significantly higher gain:feed ratio (G:F) than Control (0.82 vs. 0.62; P = 0.02) in Phase 1. In Phase 2 and Phase 3, no significant differences (P > 0.05) were observed among treatments in ADG, ADFI, nor G:F. Overall, all Cu supplementation showed equivalent results throughout the trial, with only slight numerical differences between each other. These results indicate that growth performance of pigs was influenced influenced by increasing feed intake due to copper inclusion.

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来源期刊

Journal of animal science 农林科学-奶制品与动物科学

CiteScore

4.80

自引率

12.10%

发文量

1589

审稿时长

3 months

期刊介绍： The Journal of Animal Science (JAS) is the premier journal for animal science and serves as the leading source of new knowledge and perspective in this area. JAS publishes more than 500 fully reviewed research articles, invited reviews, technical notes, and letters to the editor each year. Articles published in JAS encompass a broad range of research topics in animal production and fundamental aspects of genetics, nutrition, physiology, and preparation and utilization of animal products. Articles typically report research with beef cattle, companion animals, goats, horses, pigs, and sheep; however, studies involving other farm animals, aquatic and wildlife species, and laboratory animal species that address fundamental questions related to livestock and companion animal biology will be considered for publication.