家畜生态学报2024，Vol.45Issue(8)：22-27,6.DOI:10.3969/j.issn.1673-1182.2024.08.004
不同精粗比饲粮对西藏地区娟珊牛泌乳性能、消化代谢、瘤胃发酵参数及免疫能力的影响
Effects of Diets with Different Concentrate to Forage Ratios on Lactation Performance,Digestion and Metabolism,Rumen Fermentation Parameters and Immunity of Jersey Cattle in Tibet
摘要
Abstract
To explore the effects of diets with different concentrate to forage ratios on the lactation per-formance,digestion and metabolism,rumen fermentation parameters and immunity of Jersey cattle in Ti-bet,the experiment adopted a single-factor completely randomized block trial design,with different con-centrate to roughage ratios(group Ⅰ,40∶60;group Ⅱ,50∶50,and group Ⅲ,60∶40).Results show:(1)The dry matter intake,milk production and milk protein content of dairy cows in group Ⅲ and Ⅱ were significantly higher than those in group Ⅰ(P＜0.05).The ratio of feed to milk in group Ⅱ was signifi-cantly lower than that in group Ⅲ and Ⅰ(P＜0.05).The milk fat rate of group Ⅲ and group Ⅱ was sig-nificantly lower than that of group Ⅰ(P＜0.05).(2)The apparent digestibility of DM,NDF,ADF and CP in group Ⅲ and group Ⅱ was significantly higher than that in group Ⅰ(P＜0.05).(3)The content of TVFA and the proportion of propionic acid in the rumen fluid of dairy cows in group Ⅲ were significantly higher than those in group Ⅱ(P＜0.05),and that of group Ⅱ was significantly higher than group Ⅰ(P＜0.05).The contents of NH3-N and MCP in group Ⅲ and Ⅱ were significantly higher than those in groupⅠ(P＜0.05).(4)The TP content of dairy cows in group Ⅲ and Ⅱ was significantly higher than that in group Ⅰ(P＜0.05).Group Ⅲ and group Ⅱ had significantly higher content of serum IgA than group Ⅰ(P＜0.05).IL-4 content in group Ⅰ was significantly lower than that in other two groups(P＜0.05).The level of TNF-α in group Ⅰ was significantly higher than that in group Ⅲ and Ⅱ(P＜0.05).In summary,diets with concentrate to roughage ratio of 50∶50 and 60∶40 can significantly increase the milk produc-tion of the Jersey cattle,improve the digestibility of nutrients,and improve its immunity and anti-inflam-matory ability.关键词
娟珊牛/精粗比/泌乳性能/消化代谢/免疫能力Key words
Jersey cattle/concentrate to roughage ratio/lactation performance/digestion and metabo-lism/immunity分类
农业科技引用本文复制引用
赵丽,索朗曲吉,次仁罗布,旦增洛桑,晋美加措,巴桑珠扎..不同精粗比饲粮对西藏地区娟珊牛泌乳性能、消化代谢、瘤胃发酵参数及免疫能力的影响[J].家畜生态学报,2024,45(8):22-27,6.基金项目
娟姗牛纯种基地种群扩繁(XZ-2019-NK-NS-003) （XZ-2019-NK-NS-003）
