机构地区:[1]广东省农业科学院动物科学研究所,畜禽育种国家重点实验室,农业农村部华南动物营养与饲料重点实验室,广东省畜禽育种与营养研究重点实验室,广州510640
出 处:《动物营养学报》2022年第2期888-896,共9页CHINESE JOURNAL OF ANIMAL NUTRITION
基 金:广东省重点领域研发计划项目(2020B0202090004);财政部和农业农村部国家现代农业产业技术体系(CARS-41);国家自然科学基金青年基金项目(31802104);广东省自然科学基金项目(2021A1515012412,2021A1515010830);广东省重点领域研发计划项目(2020B0202090004);广东省农业科学院科技计划项目(202106TD,R2019PY-QF008)。
摘 要:本试验旨在研究饲粮中添加植物精油对黄羽肉种鸡产蛋性能、蛋品质、孵化性能、生殖器官发育以及血浆和肝脏生化指标的影响。选择288只产蛋率和体重接近的45周龄岭南黄羽肉种母鸡,随机分为4个组,每组6个重复,每个重复12只鸡。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加10、20、30 mg/kg植物精油。试验期10周。结果显示:1)饲粮中添加植物精油对黄羽肉种鸡的平均日产蛋重、料蛋比、平均蛋重、产蛋率、合格蛋率均无显著影响(P>0.05)。2)对照组的蛋白高度显著低于其他各组(P<0.05),对照组的哈氏单位显著低于10和20 mg/kg植物精油组(P<0.05),对照组的蛋壳厚度显著低于20 mg/kg植物精油组(P<0.05)。3)对照组的受精蛋孵化率显著低于10 mg/kg植物精油组(P<0.05)。4)对照组的卵巢系数显著低于10和20 mg/kg植物精油组(P<0.05),对照组的输卵管重量和输卵管系数显著低于10 mg/kg植物精油组(P<0.05)。5)对照组的血浆低密度脂蛋白胆固醇含量显著高于20 mg/kg植物精油组(P<0.05),对照组的肝脏甘油三酯含量显著高于10 mg/kg植物精油组(P<0.05)。由此可知,饲粮中添加植物精油不影响黄羽肉种鸡的产蛋性能,但能够改善蛋品质,提高受精蛋孵化率和生殖器官(输卵管和卵巢)系数,降低血浆低密度脂蛋白胆固醇含量和肝脏甘油三酯含量。本试验条件下,产蛋期黄羽肉种鸡饲粮植物精油适宜添加水平为10~20 mg/kg。This experiment was conducted to investigate the effects of dietary plant essential oil on laying performance,egg quality,hatching performance,reproductive organ development and plasma and liver biochemical indices of yellow-feathered breeder hens. A total of 288 forty-five-week-old Lingnan yellow-feathered breeder hens with similar laying rate and body weight were randomly divided into 4 groups with 6 replicates per group and 12 birds per replicate. Hens in the control group were fed a basal diet,and others in experimental groups were fed basal diets supplemented with 10,20 and 30 mg/kg plant essential oil,respectively. The experiment lasted for 10 weeks. The results showed as follows:1)dietary plant essential oil had no significant effects on average daily egg weight,feed to egg ratio,average egg weight,laying rate and qualified egg rate of yellow-feathered breeder hens(P>0.05). 2)The albumen height of the control group was significantly lower than that of other groups(P<0.05),the Haugh unit of the control group was significantly lower than that of10 and 20 mg/kg plant essential oil groups(P<0.05),and the eggshell thickness of the control group was significantly lower than that of 20 mg/kg plant essential oil group(P<0.05). 3)The hatchability of fertilized eggs of the control group was significantly lower than that of 10 mg/kg plant essential oil group(P<0.05). 4)The ovarian coefficient the control group was significantly lower than that of 10 and 20 mg/kg plant essential oil groups(P<0.05),and the weight of oviduct and oviduct coefficient of the control group were significantly lower than those of 10 mg/kg plant essential oil group(P<0.05). 5)The plasma low density lipoprotein cholesterol content of the control group was significantly lower than that of 20 mg/kg plant essential oil group(P<0.05),and the liver triglyceride content of the control group was significantly lower than that of 10 mg/kg plant essential oil group(P<0.05). In conclusion,dietary plant essential oil do not affect the laying performance of
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