动物营养学报2025，Vol.37Issue(2)：879-892,14.DOI:10.12418/CJAN2025.077
低蛋白质饲粮中添加发酵棉籽粕和发酵干酒糟及其可溶物对育肥猪生长性能、抗氧化功能和肉品质的影响
Effects of Low-Protein Diets Supplemented with Fermented Cottonseed Meal and Fermented Dried Distiller's Grains with Solubles on Growth Performance,Antioxidant Function and Meat Quality of Finishing Pigs
摘要
Abstract
This experiment was conducted to investigate the effects of supplementation of fermented cottonseed meal and fermented dried distiller's grains with solubles(DDGS)instead of soybean meal in low-protein diets on growth performance,antioxidant function and meat quality of finishing pigs.Using a single-factor random block design,64 healthy"Duroc×Landrace×Yorkshire"three-way hybrid pigs with similar body weight of(59.45±2.00)kg were randomly divided into 4 groups with 8 replicates per group and 2 pigs per replicate(1 male and 1 female).Pigs in the positive control group were fed a common corn-soybean meal type basal diet with 13.50％crude protein;those in the negative control group were fed a low-protein corn-soybean meal type diet with synthetic amino acid supplementation,and the crude protein level was reduced to 11.55％;and those in experimental groups Ⅰ and Ⅱ were fed the low-protein diet supplemented with fermented cottonseed meal and fermented DDGS partially replacing the soybean meal in the negative control group,and supplemented with synthetic amino acids,respectively,and the crude protein level in the diets of the two groups was 11.56％.The experiment ended when the pig weight reached 110 kg,and slaughter sampling and subsequent index determi-nation were carried out.The results showed as follows:1)compared with unfermented cottonseed meal,the contents of crude protein and crude ash in fermented cottonseed meal were increased,and the free gossypol content was significantly decreased;compared with unfermented DDGS,the crude protein content in fermented DDGS was significantly increased,while the crude fiber content was decreased.2)There were no significant differences in growth performance,carcass weight,dressing percentage and loin eye muscle area of finishing pigs among all groups(P＞0.05);compared with the positive control group,the average backfat thickness in the negative control group,experimental groups Ⅰ and Ⅱ was significantly increased(P＜0.05).3)There were no significant differences in total antioxidant capacity(T-AOC),activities of superoxide dismutase(SOD)and catalase(CAT)as well as malondialdehyde(MDA)content in serum of finishing pigs among all groups(P＞0.05);compared with the other three groups,the serum glutathione peroxidase(GSH-Px)activity in experimental group Ⅰ was significantly decreased(P＜0.05).There were no significant differences in activi-ties of SOD and GSH-Px in longissimus dorsi muscle of fattening pigs among all groups(P＞0.05);compared with the other three groups,the T-AOC in longissimus dorsi muscle in experimental group Ⅱ was significantly decreased(P＜0.05).4)There were no significant differences in meat color,drip loss,pH,shear force and marbling score in longissimus dorsi muscle of fattening pigs among all groups(P＞0.05).Compared with posi-tive control group,the intramuscular fat content in longissimus dorsi muscle in the negative control group was significantly increased(P＜0.05),the inosine monophosphate content in longissimus dorsi muscle in the nega-tive control group,experimental groups Ⅰ and Ⅱ was significantly increased(P＜0.05),the eicosandienoic acid proportion in longissimus dorsi muscle in experimental groups Ⅰ and Ⅱ was significantly decreased(P＜0.05),and the monounsaturated fatty acid(MUFA)proportion in longissimus dorsi muscle in the negative control group and experimental group Ⅰ was significantly increased(P＜0.05).In conclusion,the supplemen-tation of fermented cottonseed meal and fermented DDGS to partially replace soybean meal in low-protein diets has no negative effects on growth performance and carcass traits of finishing pigs,but can increase muscle ino-sine monophosphate content and improve muscle fatty acid composition.[Chinese Journal of Animal Nutri-tion,2025,37(2):879-892]关键词
育肥猪/低蛋白质饲粮/发酵棉籽粕/发酵DDGS/生长性能/抗氧化功能/肉品质Key words
fattening pigs/low-protein diet/fermented cottonseed meal/fermentation DDGS/growth per-formance/antioxidant function/meat quality分类
农业科技引用本文复制引用
田朝阳,刘世龙,田敏,邱月琴,叶国豪,杨雪芬,朱晓萍,尚秀国..低蛋白质饲粮中添加发酵棉籽粕和发酵干酒糟及其可溶物对育肥猪生长性能、抗氧化功能和肉品质的影响[J].动物营养学报,2025,37(2):879-892,14.基金项目
国家重点研发计划项目(2021YFD1300402) （2021YFD1300402）
广州市科技计划项目(202206010193) （202206010193）
广东省农业科学院中青年学科带头人培养项目(R2020PY-JX007) （R2020PY-JX007）
食品营养与健康研究中心建设运行经费(XTXM202205) （XTXM202205）
财政部和农业农村部——国家现代农业产业技术体系 （）
