饲喂生长猪的冷压菜籽油的化学成分及可消化和代谢能含量

IF 1.3 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Oluwakemi Y Omotosho, B. Slominski, Yanxing Niu, C. Nyachoti, A. Rogiewicz
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引用次数: 0

摘要

冷榨菜籽油(CPCE)是菜籽油生产过程中产生的一种副产品,采用压榨法生产,未经热处理和化学处理。虽然 CPCE 是猪日粮能量和蛋白质的重要来源,但加工条件的差异导致不同来源的 CPCE 营养质量存在差异。本研究旨在确定生长猪饲喂 CPCE 时的化学成分、可消化能(DE)和代谢能(ME)值。从加拿大西部的五个加工厂收集了 CPCE 样品。CPCE 样品的物理外观暗示了潜在的质量差异。对样品进行了全面的化学鉴定。除非植酸磷、木糖、甘露糖和半乳糖外,其他化学成分均存在差异(P<0.05)。按克/千克干物质(DM)计算,CPCE 样品的范围如下:乙醚提取物(EE)从 85 到 177;粗蛋白(CP)从 351 到 419;中性洗涤纤维(NDF)从 231 到 300;总膳食纤维从 326 到 373;糖蛋白从 30 到 76;非淀粉多糖(NSP)从 188 到 204;非植酸磷从 5.5 到 6.4;总能量(GE)(千卡/千克)从 5,027 到 5,635。葡萄糖苷酸总量(GLS)从 5.0 微摩尔/克 DM 到 9.7 微摩尔/克 DM 不等。将平均初始体重为 19.2 ± 1.0 千克的三十六(36)头生长母猪单独饲养在新陈代谢箱中,并以完全随机设计法将其分配到六种实验日粮中的一种,每种日粮饲养六头猪。日粮包括以玉米-大豆粉(SBM)为基础的基础日粮(100%)和五(5)种实验日粮,其中基础日粮的 18% 由来自不同生产商的 CPCE 代替。猪饲喂实验日粮 10 天,其中 5 天为适应期,其后 5 天收集粪便和尿液,但粪便和尿液分开收集。不同加工厂的 CPCE DE 和 ME 含量存在显著差异(P<0.05),平均值分别为 3,531 千卡/千克 DM 和 3,172 千卡/千克 DM。在 CPCE 样品中,GE 和氮(N)的表观总消化率(ATTD)以及 DM、GE 和 N 的保留率也存在差异(P<0.05)。总之,虽然冷榨油菜籽榨油机中的化学成分以及 DE 和 ME 值因加工者而异,但通过冷榨工艺获得的副产品可以成为猪营养中重要的能量和蛋白质来源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Chemical Composition and Digestible and Metabolizable Energy Contents in Cold-pressed Canola Expellers Fed to Growing Pigs
Cold-pressed canola expellers (CPCE) is a by-product of canola oil production obtained using pressing method without thermal and chemical treatment. While CPCE is a valuable source of dietary energy and protein in swine nutrition, the discrepancy in processing conditions leads to variability in the nutritional quality of CPCE from different sources. This study aimed to determine the chemical composition, and digestible energy (DE) and metabolizable energy (ME) values of CPCE when fed to growing pigs. Samples of CPCE were collected from five processing facilities across Western Canada. The physical appearance of the CPCE samples hinted a potential quality variation. Samples were subjected to a complete chemical characterization. Variations (P<0.05) were observed in the chemical composition, with the exception of non-phytate phosphorus, xylose, mannose and galactose. On a g/kg dry matter (DM) basis, CPCE samples ranged as follow: ether extract (EE) from 85 to 177; crude protein (CP) from 351 to 419; neutral detergent fiber (NDF) 231 to 300; total dietary fiber from 326 to 373; glycoproteins from 30 to 76; non-starch polysaccharides (NSP) from 188 to 204, non-phytate phosphorus from 5.5 to 6.4, and gross energy (GE) in kcal/kg 5,027 to 5,635. The total glucosinolates (GLS) ranged from 5.0 to 9.7 µmol/g DM. Thirty-six (36) growing barrows, with an average initial body weight of 19.2 ± 1.0kg, were individually housed in metabolism crates and assigned to one of six experimental diets in a completely randomized design, with six pigs per diet. The diets included a corn-soybean meal (SBM)-based basal diet (100%) and five (5) experimental diets in which 18% of the basal diet was substituted with CPCE from different producers. Pigs were fed the experimental diets for 10 days, with 5-day adaptation period, followed by a 5-day period for the total, but separate, collection of feces and urine. Significant differences (P < 0.05) among processing plants were observed in the DE and ME contents of CPCE, which averaged 3,531 and 3,172 kcal/kg DM, respectively. Differences (P<0.05) were noted in the apparent total tract digestibility (ATTD) of GE, nitrogen (N), as well as in the retention of DM, GE, and N in CPCE samples. In conclusion, while the chemical composition and values of DE and ME in cold-pressed canola expellers vary among processors, the by-product obtained through cold pressing process can be a valuable source of energy and protein for pig nutrition.
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来源期刊
Translational Animal Science
Translational Animal Science Veterinary-Veterinary (all)
CiteScore
2.80
自引率
15.40%
发文量
149
审稿时长
8 weeks
期刊介绍: Translational Animal Science (TAS) is the first open access-open review animal science journal, encompassing a broad scope of research topics in animal science. TAS focuses on translating basic science to innovation, and validation of these innovations by various segments of the allied animal industry. Readers of TAS will typically represent education, industry, and government, including research, teaching, administration, extension, management, quality assurance, product development, and technical services. Those interested in TAS typically include animal breeders, economists, embryologists, engineers, food scientists, geneticists, microbiologists, nutritionists, veterinarians, physiologists, processors, public health professionals, and others with an interest in animal production and applied aspects of animal sciences.
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