Effects of Dietary Tryptophan on Growth Performance, Plasma Parameters, and Internal Organs of 1-28-Day-Old Sichuan White Geese.

IF 1.8 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Journal of Poultry Science Pub Date : 2023-01-01 DOI:10.2141/jpsa.2023008
Yang Fu, Bo Liu, Hui Lei, Zhenping Lin, JunPeng Chen, Yongwen Zhu, Hui Ye, Lin Yang, Wence Wang
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引用次数: 2

Abstract

Although the nutrient requirements of geese during the growing stage are known, the dietary requirement of amino acids during the starting period remains unclear. Optimum nutrient supplementation during the starting period is crucial for improved survival rates, body-weight gain, and marketing weight in geese. Our study focused on the effect of dietary tryptophan (Trp) supplementation on the growth performance, plasma parameters, and internal-organ relative weights in 1-28-day-old Sichuan white geese. A total of 1080 1-day-old geese were divided randomly into six Trp-supplemented (0.145%, 0.190%, 0.235%, 0.280%, 0.325%, and 0.370%) groups. Average daily feed intake (ADFI), average daily gain (ADG), and duodenal relative weight were highest in the 0.190% group, brisket protein level and jejunal relative weight in the 0.235% group, and plasma total protein and albumin levels in the 0.325% group (P < 0.05). Dietary Trp supplementation did not significantly affect the relative weights of the spleen, thymus, liver, bursa of Fabricius, kidneys, and pancreas. Moreover, the 0.145% - 0.235% groups showed significantly decreased liver fat (P < 0.05). Based on the non-linear regression analysis of ADG and ADFI, the dietary Trp levels between 0.183% and 0.190% were estimated to be optimal for 1-28-day-old Sichuan white geese. In conclusion, optimal dietary Trp supplementation in 1-28-day-old Sichuan white geese resulted in increased growth performance (0.180% - 0.190%) along with improved proximal intestinal development and brisket protein deposition (0.235%). Our findings provide basic evidence and guidance for optimal levels of Trp supplementation in geese.

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饲粮中添加色氨酸对1-28日龄四川白鹅生长性能、血浆参数和内脏器官的影响
虽然生长期鹅对营养物质的需要量是已知的,但起始期对氨基酸的日粮需要量尚不清楚。起始期的营养补充对提高鹅的成活率、增重和出市体重至关重要。本试验旨在研究饲粮中添加色氨酸对1-28日龄四川白鹅生长性能、血浆参数和内脏相对重量的影响。试验选用1080只1日龄鹅,随机分为添加色氨酸0.145%、0.190%、0.235%、0.280%、0.325%和0.70% 6个组。平均日采食量(ADFI)、平均日增重(ADG)和十二指肠相对重以0.190%组最高,胸肉蛋白质水平和空肠相对重以0.235%组最高,血浆总蛋白和白蛋白水平以0.25%组最高(P < 0.05)。饲粮中添加色氨酸对脾脏、胸腺、肝脏、法氏囊、肾脏和胰腺的相对重量无显著影响。0.145% ~ 0.235%组肝脏脂肪显著降低(P < 0.05)。通过对ADG和ADFI的非线性回归分析,得出1-28日龄四川白鹅饲粮色氨酸水平在0.183% ~ 0.190%之间较为适宜。综上所述,饲粮中添加适量色氨酸可提高1-28日龄四川白鹅的生长性能(0.180% ~ 0.190%),改善近端肠道发育和胸肉蛋白质沉积(0.235%)。本研究结果为鹅饲粮中色氨酸的最佳添加水平提供了基础依据和指导。
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来源期刊
Journal of Poultry Science
Journal of Poultry Science AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
2.80
自引率
13.30%
发文量
26
审稿时长
12 months
期刊介绍: The Journal of Poultry Science will publish original reports and reviews which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: breeding and genetics, nutrition and feeds, physiology, reproduction, immunology, behavior, environmental science, management and housing welfare, processing and products, and health in poultry. Submission of original articles to the Journal is open to all poultry researchers. The review articles are invited papers written by international outstanding researchers. Articles will be published in English, American style.
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