179 Determining the productive energy of soybean meal relative to corn and feed-grade amino acids

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/skaf102.189

Ty Kim, Ethan B Stas, Jessica L Smallfield, Hilario M Cordoba, Michael D Tokach, Robert D Goodband, Joel M DeRouchey, Jason C Woodworth, Katelyn N Gaffield, Jordan T Gebhardt, Keith D Haydon

{"title":"179 Determining the productive energy of soybean meal relative to corn and feed-grade amino acids","authors":"Ty Kim, Ethan B Stas, Jessica L Smallfield, Hilario M Cordoba, Michael D Tokach, Robert D Goodband, Joel M DeRouchey, Jason C Woodworth, Katelyn N Gaffield, Jordan T Gebhardt, Keith D Haydon","doi":"10.1093/jas/skaf102.189","DOIUrl":null,"url":null,"abstract":"A total of 2,153 finishing pigs (PIC 337 × 1050; initially 28.8 ± 0.47 kg) were used in a 112-d growth study to determine the productive energy of soybean meal (SBM) relative to corn and feed-grade amino acids. Pens of pigs were blocked by initial BW and allotted to 1 of 4 dietary treatments in a randomized complete block design. There were 26 or 27 pigs per pen and 20 pens per treatment across two barns. Soybean meal NE value used in diet formulation was 2,087 kcal/kg (78% NE of corn). The four treatments consisted of a diet containing a low level of SBM (Low SBM) and three diets with 3.37 (Med-Low SBM), 6.69 (Med-High SBM), or 10% (High SBM) increase in SBM compared to the Low SBM diet. Feed-grade amino acid inclusion decreased as SBM increased with the High SBM diet not containing any feed-grade L-lysine. Treatment diets were fed in four phases. Pigs were weighed and feed disappearance was measured every 14 d to determine ADG, ADFI, G:F, and caloric efficiency (CE). Overall (d 0 to 112), there was a decrease (linear, P &lt; 0.05) in ADG and ADFI as SBM level increased, but there was no effect on G:F. Caloric efficiency improved (linear, P &lt; 0.05) as SBM increased suggesting a greater NE concentration than initially estimated. Increasing SBM decreased (linear, P &lt; 0.05) carcass ADG and carcass G:F, but there was no effect on carcass CE. Increasing SBM decreased (linear, P &lt; 0.05) HCW and carcass yield. Backfat depth and percentage lean were lowest and greatest, respectively, (quadratic, P &lt; 0.05) for pigs fed the intermediate levels of SBM. There was an increase (linear, P &lt; 0.05) in pig removals with increasing SBM but no treatment effect on mortality. However, when combined, removals and mortality were increased (linear, P &lt; 0.05) as SBM increased. The results of this study suggest that when using caloric efficiency, the productive energy of SBM is estimated at 93.5% on a liveweight basis and 83.9% on a carcass weight basis of the energy of corn.","PeriodicalId":14895,"journal":{"name":"Journal of animal science","volume":"19 1","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of animal science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1093/jas/skaf102.189","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}

引用次数: 0

Abstract

A total of 2,153 finishing pigs (PIC 337 × 1050; initially 28.8 ± 0.47 kg) were used in a 112-d growth study to determine the productive energy of soybean meal (SBM) relative to corn and feed-grade amino acids. Pens of pigs were blocked by initial BW and allotted to 1 of 4 dietary treatments in a randomized complete block design. There were 26 or 27 pigs per pen and 20 pens per treatment across two barns. Soybean meal NE value used in diet formulation was 2,087 kcal/kg (78% NE of corn). The four treatments consisted of a diet containing a low level of SBM (Low SBM) and three diets with 3.37 (Med-Low SBM), 6.69 (Med-High SBM), or 10% (High SBM) increase in SBM compared to the Low SBM diet. Feed-grade amino acid inclusion decreased as SBM increased with the High SBM diet not containing any feed-grade L-lysine. Treatment diets were fed in four phases. Pigs were weighed and feed disappearance was measured every 14 d to determine ADG, ADFI, G:F, and caloric efficiency (CE). Overall (d 0 to 112), there was a decrease (linear, P < 0.05) in ADG and ADFI as SBM level increased, but there was no effect on G:F. Caloric efficiency improved (linear, P < 0.05) as SBM increased suggesting a greater NE concentration than initially estimated. Increasing SBM decreased (linear, P < 0.05) carcass ADG and carcass G:F, but there was no effect on carcass CE. Increasing SBM decreased (linear, P < 0.05) HCW and carcass yield. Backfat depth and percentage lean were lowest and greatest, respectively, (quadratic, P < 0.05) for pigs fed the intermediate levels of SBM. There was an increase (linear, P < 0.05) in pig removals with increasing SBM but no treatment effect on mortality. However, when combined, removals and mortality were increased (linear, P < 0.05) as SBM increased. The results of this study suggest that when using caloric efficiency, the productive energy of SBM is estimated at 93.5% on a liveweight basis and 83.9% on a carcass weight basis of the energy of corn.

查看原文本刊更多论文

测定豆粕相对于玉米和饲料级氨基酸的生产能

共育肥猪2153头(PIC 337 × 1050；初始为28.8±0.47 kg)，在112 d的生长试验中测定豆粕（SBM）相对于玉米和饲料级氨基酸的生产能。采用完全随机区组设计，按初始体重封锁猪圈，并按4种饲粮处理中的1种进行分组。每个猪圈26或27头猪，每个处理20头猪，跨越两个猪圈。日粮配方中豆粕NE值为2087 kcal/kg（玉米NE值78%）。4个处理包括低SBM水平的饲粮（低SBM）和3个饲粮，与低SBM饲粮相比，SBM水平分别提高3.37（中-低SBM）、6.69（中-高SBM）和10%（高SBM）。饲料级氨基酸包涵率随着饲料粗密度的增加而降低，而高饲料粗密度饲粮不含任何饲料级l -赖氨酸。试验饲粮分4期饲喂。每14 d称重，测定饲料消失量，测定平均日增重、平均ADFI、G:F和热效率（CE）。总体而言（d 0至112），有下降(线性，P <；随着SBM水平的升高，ADG和ADFI显著降低（0.05），但对G:F无影响。热效率提高(线性，P <；0.05)，随着SBM的增加，表明NE浓度高于最初估计。增加SBM降低(线性，P <；0.05)胴体ADG和G:F，但对胴体CE无影响。增加SBM降低(线性，P <；0.05) HCW和胴体产量。背膘深度和瘦肉百分比分别最小和最大，(二次，P <；0.05)。有一个线性增长(P <；0.05)，但对猪的死亡率没有影响。然而，当联合使用时，清除率和死亡率增加(线性，P <；0.05)，随着SBM的增加。本研究结果表明，以热效率计算，以活重为基础的玉米生产能估计为93.5%，以胴体重为基础的玉米生产能估计为83.9%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.