湖南农业大学学报（自然科学版）2025，Vol.51Issue(4)：68-77,10.DOI:10.13331/j.cnki.jhau.2025.04.009
不同NFC/NDF水平饲粮对赣西山羊屠宰性能和血液生化指标与肌肉品质的影响
Effects of different dietary NFC/NDF levels on slaughter performance,blood biochemical parameters and meat quality of Ganxi goats
摘要
Abstract
Thirty-nine healthy Ganxi goats aged 4 months with similar body masses((15.25±0.46)kg)were divided into three groups with 13 goats in each group.Goats in experimental groups Ⅰ,Ⅱ,and Ⅲ were fed diets with ratios of non-fibrous carbohydrates to neutral detergent fiber content(NFC/NDF)at levels of 0.9,1.2,and 1.5,respectively.The experimental period lasted for 70 days,consisting of a 10-day adaptation period followed by a 60-day formal trial period.At the conclusion of the feeding period,slaughter performance,blood biochemical indicators,rumen fermentation parameters,rumen bacterial gene expression levels,intestinal morphology,and muscle nutritional components of the Ganxi goats were determined to investigate the effects of dietary NFC/NDF levels on these metrics.Results indicated that the pre-slaughter live mass of goats in Group Ⅱ was significantly higher than that in Group Ⅲ,being 1.09 times that of Group Ⅲ.On day 10 of the formal trial period,blood glucose(GLU)concentration of goats in Group Ⅲ was significantly higher than that in Group Ⅱ,being 1.31 times that of Group Ⅱ.On day 30 of the formal trial period,the serum total cholesterol(TC)concentration of goats in Group Ⅰ was significantly higher than that in Group Ⅲ,being 1.42 times that of Group Ⅲ,while the GLU concentration of goats in Group Ⅲ was significantly higher than that in Group Ⅱ,being 1.15 times that of Group Ⅱ.On day 60 of the formal trial period,the TC and triglyceride(TG)concentrations of goats in Group Ⅰ were significantly higher than those in Group Ⅲ,being 1.23 times and 1.53 times those of Group Ⅲ,respectively,while the GLU concentration and alanine aminotransferase(ALT)activity of goats in Group Ⅰ were significantly lower than those in the other two groups.The rumen pH of goats in Group Ⅰ was significantly lower than that in Group Ⅱ,while total volatile fatty acids and propionate concentrations of goats in GroupⅠ were significantly higher than those in Group Ⅱ,being 1.07 times and 2.48 times those of GroupⅡ,respectively.The relative gene expression levels of Ruminobacter amylophilus,Fibrobacter succinogenes and Butyrivibrio fibrisolvens in goat rumen in Group Ⅱ were significantly higher than those in the other two groups,with the lowest levels observed in Group Ⅰ,while the relative gene expression levels of Ruminococcus albus,Prevotella ruminicola,Lactobacillus spp.and Ruminococcus flavefaciens in goat rumen in Group Ⅰ were significantly higher than those in the other two groups,with the lowest levels observed in Group Ⅲ.Group Ⅰ goats exhibited significantly lower mass fractions of muscle glycine,histidine,total amino acids,non-essential amino acids,and sweet amino acids compared to the other two groups,and alanine mass fraction of goats in Group Ⅰ was significantly lower than that in Group Ⅱ.Meanwhile,Group Ⅱgoats had significantly lower muscle methionine mass fraction than those in the other two groups.No statistically significant differences were observed among the three groups in intestinal morphological indicators,muscle nutritional components or fatty acid mass fractions.In conclusion,diets with different NFC/NDF levels could regulate ruminal microbial community structure in Ganxi goats,thereby influencing fiber and protein degradation,which affected rumen fermentation and improved pre-slaughter live mass.Under the conditions of this study,an NFC/NDF level of 1.2 was found to be optimal.关键词
赣西山羊/非纤维性碳水化合物(NFC)/中性洗涤纤维(NDF)/屠宰性能/瘤胃发酵参数/肠道形态/血液生化指标/肌肉品质/脂肪酸/氨基酸Key words
Ganxi goat/non-fibrous carbohydrates(NFC)/neutral detergent fiber(NDF)/slaughter performance/rumen fermentation parameters/intestinal morphology/blood biochemical indicators/muscle quality/fatty acids/amino acids分类
农业科技引用本文复制引用
潘月,占今舜,江浩筠,王海波,贾浩滨,钟小军,张建斌,霍俊宏..不同NFC/NDF水平饲粮对赣西山羊屠宰性能和血液生化指标与肌肉品质的影响[J].湖南农业大学学报（自然科学版）,2025,51(4):68-77,10.基金项目
江西省农业科学院基础研究与人才培养专项(JXSNKYJCRC202407) （JXSNKYJCRC202407）
江西省现代农业产业技术体系建设专项(JXARS-13-肉羊岗位) （JXARS-13-肉羊岗位）
