畜牧与兽医2018，Vol.50Issue(6)：29-32,4.
日粮NFC/NDF水平对泌乳后期奶牛生产性能、血液生化及抗氧化指标的影响
Effects of NFC/NDF levels on performance, blood biochemical and antioxidant index of cows in late lactation
摘要
Abstract
The aim of this study was to investigate the effects of NFC/NDF levels on milk production,milk composition,blood biochemi cal,and antioxidant index in late-lactation cows.Eighteen Chinese-Holstein cows were randomly divided,using 3×3 Latin square design,into three groups (6 cows in each group) according to parities (2.00±0.22),days in milk (202.53± 17.13 days),and milk production 24.47± 1.27 kg/d).The cows were fed with three types of diets with different NFC/NDF ratios (A (1.38);B (1.19);and C 1.08)),respectively.The experiment was conducted in three periods of 28 days each.On days 14,21,and 28 of each period,feed in take and milk yield were recorded and milk samples (approximately 50 mL) were collected.On day 28 of each period,blood samples (approximately 10 mL) was collected via the tail vein.The results showed that,compared with group A,the serum T-AOC (total antioxidant capacity) in group B was increased and the MDA (malondialdehyde) concentration was decreased (P＜0.05).In terms of milk yield,milk composition,and blood metabolism,the three groups did not differ significantly (P＞0.05).In summary,proper reduction of dietary NFC/ NDF level has no significant effect on lactation performance and blood metabolism in late-lactation cows.An appropriate dietary NFC/NDF level (1.19) can improve antioxidant capacity in dairy cows and ensure their healthy production performance.关键词
非纤维性碳水化合物/中性洗涤纤维/泌乳性能/血液指标/抗氧化指标/奶牛Key words
NFC/NDF/lactation performance/blood parameters/antioxidant index/dairy cows分类
农业科技引用本文复制引用
张林,李烨青,王泽栋,曾涵芳,陈孟姣,韩兆玉..日粮NFC/NDF水平对泌乳后期奶牛生产性能、血液生化及抗氧化指标的影响[J].畜牧与兽医,2018,50(6):29-32,4.基金项目
江苏农业科技自主创新项目(CX (17) 1005) （CX (17）
