首页|饲粮中添加胱氨酸对安哥拉兔产毛性能的影响

饲粮中添加胱氨酸对安哥拉兔产毛性能的影响

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本试验旨在考察饲粮中添加不同水平胱氨酸对安哥拉兔产毛性能的影响.选取已剪二刀毛安哥拉兔180只,随机分为5组,每组36个重复,每个重复1只.对照组饲喂玉米-豆粕型基础饲粮,试验组饲喂在基础饲粮中分别添加0.1％、0.2％、0.3％和0.4％胱氨酸的试验饲粮.预试期3 d,正试期73 d.结果显示:与对照组相比,饲粮中添加0.1％、0.2％和0.3％的胱氨酸显著提高了安哥拉兔的平均日采食量(P＜0.05),添加0.1％和0.2％的胱氨酸显著降低了安哥拉兔的料毛比(P＜0.05);饲粮中添加0.4％的胱氨酸显著提高了血清中谷胱甘肽过氧化物酶(GSH-Px)活性(P＜0.05);饲粮中添加0.1％和0.3％的胱氨酸显著提高了安哥拉兔背部皮下次级毛囊密度(P＜0.05),添加0.1％、0.2％和0.4％的胱氨酸显著提高了安哥拉兔毛的断裂强力(P＜0.05),添加0.4％的胱氨酸显著提高了安哥拉兔毛的纤维细度(P＜0.05);此外,饲粮中添加0.2％和0.3％的胱氨酸显著上调了安哥拉兔背部皮肤中角蛋白关联蛋白6.1(KAP6.1)的表达(P＜0.05).综上所述,饲粮中添加胱氨酸可改善安哥拉兔毛品质,促进毛囊发育;本试验条件下,安哥拉兔饲粮中胱氨酸的适宜添加水平为0.1％.
Effects of Dietary Cystine Supplementation on Hair Production Performance of Angora Rabbits
This study was conducted to investigate the effects of diet supplemented with different levels of cys-tine on hair production performance of Angora rabbits.A total of 180 wool clipped Angora rabbits were divided into five groups with 36 replicates per group,and each replicate had one rabbit.Rabbits in the control group were fed a corn-soybean meal type basal diet,and those in the experimental groups were fed the basal diet sup-plemented with 0.1％,0.2％,0.3％and 0.4％cystine,respectively.The pre-trial lasted for 3 days,and the formal trial lasted for 73 days.The results showed that,compared with the control group,diet supplemented with 0.1％,0.2％and 0.3％cystine significantly improved the average daily feed intake(P＜0.05),and diet supplemented with 0.1％and 0.2％cystine significantly reduced the feed/wool ratio(P＜0.05);diet supple-mented with 0.4％cystine significantly increased the activity of glutathione peroxidase(GSH-Px)in serum(P＜0.05);diet supplemented with 0.1％and 0.3％cystine significantly increased the secondary hair follicle density of subcutaneous of back(P＜0.05),diet supplemented with 0.1％,0.2％and 0.4％cystine significant-ly increased the breaking force of rabbit hair(P＜0.05),and diet supplemented with 0.4％cystine significantly increased the fiber fineness of rabbit hair(P＜0.05);in addition,diet supplemented with 0.2％and 0.3％cys-tine significantly upregulated the expression of keratin-associated protein 6.1(KAP6.1)in back skin of rabbits(P＜0.05).In conclusion,dietary cystine supplementation can improve wool quality and promote the hair folli-cle development of Angora rabbits.Under the conditions of this experiment,the optimal supplemental level of cystine in the diet of Angora rabbits is 0.1％.[Chinese Journal of Animal Nutrition,2024,36(4):2586-2593]

Angora rabbitscystinewool qualityhair follicle development

时文君、陈佳力、叶姝祺、刘永需、赵红、李福昌、刘磊

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山东农业大学动物科技学院,农业农村部非粮食饲料资源高效利用重点实验室(部省共建),山东省动物生物技术与疾病预防控制重点实验室,泰安 271018

青岛康大佳惠饲料有限公司,青岛 266499

安哥拉兔 胱氨酸 毛品质 毛囊发育

山东省重点研发计划(乡村振兴科技创新提振行动计划)山东省自然科学基金山东省自然科学基金山东省特种经济动物产业技术体系建设项目山东省农业良种工程项目青岛西海岸新区科技项目(科技攻关"揭榜制"专项)(2021)现代农业产业技术体系建设项目

2023TZXD044ZR2021MC043ZR2021QC108SDAIT-21-162021LZGC0022021-17CARS-43-B-1

2024

10.12418/CJAN2024.222

动物营养学报
中国畜牧兽医学会

动物营养学报

CSTPCD北大核心
影响因子：1.297
ISSN：1006-267X
年,卷(期)：2024.36(4)
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