确定生长猪的最佳能量系统和水平。

IF 2.7 3区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Journal of Animal Science and Technology Pub Date : 2024-05-01 Epub Date: 2024-05-31 DOI:10.5187/jast.2023.e63
Sangwoo Park, Jeehwan Choe, Jin Ho Cho, Ki Beom Jang, Hyunjin Kyoung, Kyeong Il Park, Yonghee Kim, Jinmu Ahn, Hyeun Bum Kim, Minho Song
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引用次数: 0

摘要

本研究主要评估了生长猪对不同能量系统和能量水平日粮的生长性能反应。随后,我们比较了每种能量水平日粮的养分消化率和可消化养分浓度。在实验 1 中,144 头平均初始体重(BW)为 26.69 ± 7.39 kg 的生长猪被随机分配到 6 个日粮处理中(4 头猪/圈;6 个重复/处理),按照 2 × 3 的因子排列,产生两种能量系统(代谢能 [ME] 和净能 [NE])和三种能量水平(低能 [LE]、推荐能 [C] 和高能 [HE])。猪饲喂实验日粮 6 周,实验期间允许自由采食和饮水。在实验 2 中,12 头平均初始体重为 27.0 ± 1.8 千克的生长猪被随机分配到各个新陈代谢箱中,并以 6 × 6 拉丁方设计重复饲喂六种日粮。六种日粮处理与生长试验中使用的日粮处理相同。猪每天的日粮摄入量为维持生命所需的能量的 2.5 倍,在实验期间分为两餐,每天两次。在本研究中,能量系统和能量水平的差异对生长猪的生长性能和营养物质消化率(酸水解醚提取物 [AEE] 除外)没有显著影响。然而,日粮中乙醚提取物、AEE 和酸性洗涤纤维的可消化浓度(克/千克干物质 [DM])随着能量水平的增加而显著增加(p < 0.05)。此外,随着日粮能量含量的增加,可消化粗蛋白含量(克/千克 DM)也有增加的趋势(p = 0.09)。因此,能量体系和水平的差异并不影响生长猪的体重、平均日增重和平均日采食量。这意味着,在考虑可消化养分浓度时,可能需要日粮能量水平有更大的差异,才能显著影响生长性能和养分消化率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Determination of optimal energy system and level for growing pigs.

This study mainly evaluated the responses in growth performance of growing pigs to different energy systems and energy levels in diets. Subsequently, we compared the nutrient digestibility and digestible nutrient concentrations of each energy level diet. In experiment 1, a total of 144 growing pigs with an average initial body weight (BW) of 26.69 ± 7.39 kg were randomly allotted to six dietary treatments (four pigs/pen; six replicates/treatment) according to a 2 × 3 factorial arrangement resulting from two energy systems (metabolizable energy [ME] and net energy [NE]) and three energy levels (low [LE], recommended [C], and high energy [HE]). Pigs were fed the experimental diets for 6 weeks and were allowed free access to feed and water during the experimental period. In experiment 2, 12 growing pigs with an average initial BW of 27.0 ± 1.8 kg were randomly allotted to individual metabolism crates and fed the six diets in a replicated 6 × 6 Latin square design. The six dietary treatments were identical to those used in the growth trial. Pigs were fed their respective diets at 2.5 times the estimated energy requirement for maintenance per day, and this was divided into two equal meals provided twice per day during the experimental period. Differences in energy systems and energy levels had no significant effect on the growth performance or nutrient digestibility (except acid-hydrolyzed ether extract [AEE]) of growing pigs in the current study. However, the digestible concentrations of ether extract, AEE, and acid detergent fiber (g/kg dry matter [DM]) in diets significantly increased (p < 0.05) with increasing energy levels. Additionally, there was a tendency (p = 0.09) for an increase in the digestible crude protein content (g/kg DM) as the energy content of the diet increased. Consequently, differences in energy systems and levels did not affect the BW, average daily gain, and average daily feed intake of growing pigs. This implies that a higher variation in dietary energy levels may be required to significantly affect growth performance and nutrient digestibility when considering digestible nutrient concentrations.

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来源期刊
Journal of Animal Science and Technology
Journal of Animal Science and Technology Agricultural and Biological Sciences-Food Science
CiteScore
4.50
自引率
8.70%
发文量
96
审稿时长
7 weeks
期刊介绍: Journal of Animal Science and Technology (J. Anim. Sci. Technol. or JAST) is a peer-reviewed, open access journal publishing original research, review articles and notes in all fields of animal science. Topics covered by the journal include: genetics and breeding, physiology, nutrition of monogastric animals, nutrition of ruminants, animal products (milk, meat, eggs and their by-products) and their processing, grasslands and roughages, livestock environment, animal biotechnology, animal behavior and welfare. Articles generally report research involving beef cattle, dairy cattle, pigs, companion animals, goats, horses, 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 also be considered for publication. The Journal of Animal Science and Technology (J. Anim. Technol. or JAST) has been the official journal of The Korean Society of Animal Science and Technology (KSAST) since 2000, formerly known as The Korean Journal of Animal Sciences (launched in 1956).
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