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PSII-18 Effect of L-trp Source and Standard Ileal Digestible (SID) Tryptophan to Lysine Ratio on Growth Performance of Nursery Pigs
Journal of Animal Science ( IF 2.7 ) Pub Date : 2021-05-08 , DOI: 10.1093/jas/skab054.283
Tsung Cheng Cheng Tsai 1 , kristopher Bottom 1 , Kyle Coble 2 , Amanda J Gerhart 2 , Jeffrey Chewning 3 , Charles V Maxwell 1 , Nathan Davis 1
Affiliation  

To evaluate the different sources of L-Trp on growth performance, a total of 288 weaned pigs (PIC1050 x DNA600) were stratified by gender and BW, and assigned to 1 of 7 dietary treatments. Treatments were control (devoid of feed grade Trp to create SID Trp/Lys = 17), and L-Trp from (Ajinomoto CO., INC., TrpA vs Daesang CO., LTD., TrpD) was added to form SID Trp:Lys ratios of 19, 21, and 23. Chlortetracycline (Zoetis Inc. Parsippany-Troy Hills, NJ) was supplemented in phase 1 (6 d) &2 (9 d), and Mecadox (Philbro Animal Health Corp., Ridgefield Park, NJ) was added in phase 3 (10 d) while antibiotic free diets were fed in phase 4 (17 d). Individual pig BW and pen feed intake was measured at each phase to determine BW, ADG, ADFI and F:G ratio. Data were analyzed as Mixed procedure of SAS as RCBD. Orthogonal contrast was conducted to determine linear and quadratic response with SID Trp/Lys from 17 (control) to 23 for each source of L-Trp. Adding both sources of L-Trp had minimum impact on growth performance in phase 1–3. As in phase 4, a tendency and significant linear increase on ADG with increasing level of TrpA (P = 0.09) and TrpD (P = 0.04) was observed with the highest ADG in pigs fed TrpA19. Pigs fed increasing level of SID Trp/Lys from TrpA had a quadratic reduction on F:G ratio (P = 0.09). The results suggested that a Trp:Lys ratio over 17 may enhance growth performance and source of L-Trp may impact performance.

中文翻译:

PSII-18 L-trp 源和标准回肠可消化 (SID) 色氨酸与赖氨酸比对保育猪生长性能的影响

为了评估不同来源的 L-Trp 对生长性能的影响,共有 288 头断奶猪 (PIC1050 x DNA600) 按性别和体重进行分层,并分配到 7 种日粮处理中的 1 种。处理为对照(不含饲料级色氨酸以产生 SID Trp/Lys = 17),并添加来自(Ajinomoto CO., INC., TrpA vs Daesang CO., LTD., TrpD)的 L-Trp 以形成 SID Trp: Lys 比率为 19、21 和 23。在第 1 阶段(6 天)和第 2 阶段(9 天)补充了金霉素(Zoetis Inc. Parsippany-Troy Hills,NJ)和 Mecadox(Philbro Animal Health Corp.,Ridgefield Park,NJ ) 在第 3 阶段(10 天)添加,而在第 4 阶段(17 天)饲喂无抗生素日粮。在每个阶段测量个体猪的体重和围栏采食量,以确定体重、ADG、ADFI 和 F:G 比率。数据分析为 SAS 的混合程序作为 RCBD。进行正交对比以确定每个 L-Trp 来源的 SID Trp/Lys 从 17(对照)到 23 的线性和二次响应。添加两种 L-Trp 来源对第 1-3 阶段的生长性能影响最小。与第 4 阶段一样,随着 TrpA (P = 0.09) 和 TrpD (P = 0.04) 水平的增加,观察到 ADG 呈显着线性增加的趋势,其中饲喂 TrpA19 的猪的 ADG 最高。饲喂来自 TrpA 的 SID Trp/Lys 水平增加的猪的 F:G 比率呈二次降低(P = 0.09)。结果表明,Trp:Lys 比率超过 17 可能会提高生长性能,而 L-Trp 的来源可能会影响性能。随着 TrpA (P = 0.09) 和 TrpD (P = 0.04) 水平的增加,ADG 呈显着线性增加趋势,其中饲喂 TrpA19 的猪的 ADG 最高。饲喂来自 TrpA 的 SID Trp/Lys 水平增加的猪的 F:G 比率呈二次降低(P = 0.09)。结果表明,Trp:Lys 比率超过 17 可能会提高生长性能,而 L-Trp 的来源可能会影响性能。随着 TrpA (P = 0.09) 和 TrpD (P = 0.04) 水平的增加,ADG 呈显着线性增加趋势,其中饲喂 TrpA19 的猪的 ADG 最高。饲喂来自 TrpA 的 SID Trp/Lys 水平增加的猪的 F:G 比率呈二次降低(P = 0.09)。结果表明,Trp:Lys 比率超过 17 可能会提高生长性能,而 L-Trp 的来源可能会影响性能。
更新日期:2021-05-08
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