Dietary resistant potato starch improves growth performance and feather development in Pekin ducks fed a low phosphorus diet.
Dietary resistant potato starch improves growth performance and feather development in Pekin ducks fed a low phosphorus diet.
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日粮抗性马铃薯淀粉可改善低磷日粮喂养的北京鸭的生长性能和羽毛发育
DOI：
10.1016/j.psj.2020.12.044
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发表时间：
2021-03
期刊：
影响因子：
4.4
通讯作者：
Zeng QF
中科院分区：
文献类型：
--
作者：
Xu HM;Zhang KY;Bai SP;Ding XM;Wang JP;Peng HW;Xuan Y;Su ZW;Gang T;Zeng QF
本研究旨在探讨饲粮中添加抗性马铃薯淀粉（RPS）是否能通过改善营养物质利用率和盲肠微生物组发酵能力来改善低非植酸磷（nPP）饲粮对北京鸭生长性能、羽毛生长、羽囊发育和胴体性状的负面影响。试验采用2 × 2随机区组设计，设2个RPS水平（0或12%）和2个水平的nPP（低或正常，低：1-14日龄为0.22%，15-35日龄为0.18%;正常：1-14日龄为0.40%，15-35日龄为0.35%），共4个处理，每个处理8个重复围栏，每个围栏12只鸡。在生长性能和屠体性状方面，添加RPS显著提高（P < 0.05）低nPP日粮鸭14和35日龄的体重、1-14、15-35和1-35日龄的体增重和采食量以及35日龄的腹脂率和胸肌率，显著降低（P < 0.05）低nPP日粮鸭的死亡率。在35日龄时，添加RPS显著（P < 0.05）提高了低nPP日粮鸭的第四初级羽长、绝对羽重和背皮初级羽密度。在营养利用方面，添加RPS显著提高了低nPP日粮鸭35日龄DM、CP、能量的利用率和AME利用率（P < 0.05）。而添加RPS对低nPP日粮鸭盲肠短链脂肪酸含量、盲肠植酸酶和纤维素酶活性无显著影响（P > 0.05）。这些结果表明，RPS可以提高营养物质的利用率，改善低氮磷日粮对北京鸭生产性能和羽毛发育的负面影响。
This study investigated whether dietary resistant potato starch (RPS) inclusion could ameliorate the negative impact of a low nonphytate phosphorus (nPP) diet on growth performance, feather growth, feather follicles (FF) development, and carcass traits by improving nutrient utilization and cecal microbiome fermentation capacity in Pekin ducks. The experiment was performed with a 2 × 2 randomized block design with 2 levels of RPS (0 or 12%) and 2 levels of nPP (low or normal, low: 0.22% at 1–14 d and 0.18% at 15–35 d of age; normal: 0.40% at 1–14 d and 0.35% at 15–35 d of age) for a total of 4 treatments, each with 8 replicate pens per treatment of 12 birds per pen. As regards growth performance and carcass traits, RPS inclusion markedly increased (P < 0.05) BW of 14 and 35 d, BWG and FI of 1–14 d, 15–35 d, and 1–35 d as well as abdominal fat and breast meat percentage of 35 d in ducks fed low nPP diets; moreover, RSP inclusion significantly reduced (P < 0.05) mortality in ducks fed low nPP diets. As regards feather growth and follicles development of 35 d, RPS inclusion significantly increased (P < 0.05) the fourth primary feather length, absolute feather weight, and the density of primary FF in the back skin in ducks fed low nPP diets. In regard to nutrition utilization, RPS supplementation significantly increased (P < 0.05) the availability of DM, CP, and energy, as well as dietary AME at 35 d of age in ducks fed low nPP diets. However, RPS supplementation had no effect (P > 0.05) on the concentration of cecal short-chain fatty acids and the activities of cecal phytase and cellulase in ducks fed low nPP diets. These results indicate that RPS can improve nutrient availability to ameliorate the negative effects on performance and feather development caused by a low nPP diet in Pekin ducks.
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影响因子：
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影响因子：
4.4
作者：
Qin, S. M.;Zhang, K. Y.;Zeng, Q. F.
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