不同能量摄入量对育成期北京鸭卵巢发育的影响

发布时间：2018-06-30 18:13

本文选题：饲粮能量 + 脂肪沉积　；参考：《中国畜牧杂志》2017年08期

【摘要】：为研究不同的能量摄入量对北京鸭卵巢发育的影响,试验选取8周龄、平均体重为(2 931±291)g的雌性北京鸭240只,随机分为5个组,每组6个重复,每个重复8只。5组试验日粮的能量水平分别为10.00、10.65、11.30、11.95、12.60 MJ/kg。通过统一控制鸭的饲料采食量,使不同日粮能量组试验鸭的平均日能量摄入水平分别控制在1.63、1.73、1.84、1.94、2.05 MJ/d。20周龄时,每个重复中随机选取1只试验鸭进行屠宰,分别观测其卵巢组织形态、血液生化与激素指标,以及卵巢中相关激素受体的m RNA转录水平。结果表明:提高能量摄入量可显著降低育成期北京鸭的耗料增重比(F/G)(P0.05),显著提高日增重(ADG)(P0.05);同时能量摄入量能够显著影响血液生化指标并调节繁殖相关激素在卵巢中的表达量(P0.05)。以上研究提示,提高育成期北京鸭的能量摄入量能显著提高脂肪沉积能力,影响育成期北京鸭卵巢的发育。
[Abstract]:In order to study the effect of different energy intake on ovarian development of Beijing duck, 240 female Peking ducks with average body weight of (2 931 卤291) g at 8 weeks of age were randomly divided into 5 groups with 6 replicates in each group. The dietary energy levels of each of the 8 groups were 10.00 ~ 10.65 ~ 11.30 ~ 11.955 ~ 12.60 MJ 路kg ~ (-1) 路min ~ (-1), respectively. By unifying the feed intake of the ducks, the average daily energy intake level of the experimental ducks with different dietary energy groups was controlled at 1.63 ~ 1.73 ~ 1.83 ~ 1.84 ~ 1.94 ~ 1.94 ~ 2.05 MJ / d 路20 weeks old respectively. One of the tested ducks was selected randomly for slaughter in each repeat, and their ovarian tissue morphology was observed. Biochemical and hormone markers in blood and mRNA transcription level of hormone receptors in ovary. The results showed that the increase of energy intake could significantly decrease the feed / weight gain ratio (F- / G) and ADG (P0.05), and significantly affect the biochemical parameters of blood and regulate the expression of reproductive hormones in the ovary (P0.05). These results suggest that increasing the energy intake of Beijing duck can significantly improve the ability of fat deposition and affect the development of ovaries of Beijing duck.
【作者单位】：东北农业大学动物医学学院;中国农业科学院北京畜牧兽医研究所动物营养学国家重点实验室;
【基金】：现代水禽技术体系建设专项(CARS-43)
【分类号】：S834.5

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