Effectiveness and optimum level of protected methionine in fattening pig diets

IF 0.5 4区农林科学 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Revista Colombiana De Ciencias Pecuarias Pub Date : 2020-04-16 DOI:10.17533/udea.rccp.v33n4a02

J. L. Figueroa-Velasco, David Trujano-San-Luis, J. A. Martínez-Aispuro, M. T. Sánchez-Torres, M. M. Crosby-Galván, A. Ruíz-Flores, J. L. Cordero-Mora

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引用次数: 2

Abstract

Background: Methionine (Met) requirements have not been clearly established for fattening pigs due to their metabolic interrelationships and its bioavailability for protein synthesis. Objective: To determine the optimum level of regular crystalline or protected Met in pig diets from nursery to finishing. Methods: A total of 48 crossbred pigs (11.74±1.72 kg of initial body weight) were used. The treatments consisted of adding four levels (0.00, 0.05, 0.10, 0.15% in addition to dietary content) and two types of Met (regular and protected) to pig diets. Results: Nursery, Finishing I, and II pigs fed protected Met increased daily feed intake (DFI; p≤0.10). Protected Met raised daily weight gain (DWG) in nursery pigs and increased backfat thickness (BT) in nursery and grower pigs (p≤0.10). In Finishing I pigs, protected Met increased DWG and improved carcass characteristics (p≤0.10). In nursery and grower pigs, an extra 0.15% Met decreased feed:gain ratio (FGR; p≤0.10). In grower and Finishing II pigs fed extra 0.05% Met improved DWG and extra 0.10% Met reduced plasma urea concentration (p≤0.10). Conclusions: Feeding protected Met in pig diets increases DWG, DFI and BT. Increasing 0.05-0.15% Met level improves FGR, DWG, potentially reducing nitrogen excretion to the environment.

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育肥猪饲粮中保护性蛋氨酸的有效性及最佳水平

背景:由于蛋氨酸的代谢相互关系及其对蛋白质合成的生物利用度，育肥猪对蛋氨酸的需要量尚未明确确定。目的:确定从苗期到育肥期猪饲粮中常规结晶型或保护性蛋氨酸的最佳水平。方法:选用48头初始体重为11.74±1.72 kg的杂交猪。在饲粮中添加4个水平(0.00、0.05、0.10、0.15%)和2种蛋氨酸(常规蛋氨酸和保护性蛋氨酸)。结果:保育猪、育肥猪和育肥猪饲喂保护性蛋氨酸提高了日采食量(DFI);p≤0.10)。保护性蛋氨酸提高了保育猪的日增重(DWG)，提高了保育猪和生长猪的背膘厚度(BT) (p≤0.10)。在肥育期1期猪中，保护性蛋氨酸增加了重重，改善了胴体性状(p≤0.10)。在苗圃和生长猪中，每增加0.15%蛋氨酸可降低料重比(FGR);p≤0.10)。在生长期和育肥期，饲粮额外添加0.05%蛋氨酸可提高DWG，额外添加0.10%蛋氨酸可降低血浆尿素浓度(p≤0.10)。结论:饲粮中添加保护性蛋氨酸可提高DWG、DFI和BT，提高0.05 ~ 0.15%的蛋氨酸水平可提高FGR、DWG，可能减少氮向环境的排泄。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Colombiana De Ciencias Pecuarias AGRICULTURE, DAIRY & ANIMAL SCIENCE-

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The editors of Revista Colombiana de Ciencias Pecuarias (RCCP) welcome the submission of original manuscripts on experimental and clinical studies associated with the broad areas of animal sciences and veterinary medicine as they interface with biochemistry, molecular biology, physiology, pharmacology, toxicology, pathology, microbiology, parasitology, immunology and epidemiology. The scope of the journal includes studies of basic and applied research in animal management and production, feeding and nutrition, reproduction, breeding, genetics, animal welfare and behavior; as well as animal production focussed from biotechnology, soil science, agrostology, silvopastoral systems, livestock economics and the environment. The criteria for acceptance of papers submitted for publication are originality, quality and clarity of the content. Each contribution must be based on original, unpublished research that has not been simultaneously submitted to other journals. All papers will be peer reviewed. All authors bear responsibility for ensuring the integrity and quality of their reported research. It is the author''s responsibility to secure permission to use figures or tables that have been published elsewhere. Contributions may be classified as original research, review, rapid communication, clinical case studies or methodological articles, as well as news/commentaries or letters to the editor. Most review articles are invited by the editor. Authors interested in submitting a review article should contact the corresponding editor. Rapid publication of original manuscripts is a goal of the journal. Manuscripts must be written in English. Each manuscript is considered for publication with the understanding that it has not been simultaneously submitted to any other journal. Upon acceptance for publication, papers are subject to editorial review and revision.