Sequential feeding can increase activity and improve gait score in meat-type chickens
Sequential feeding can increase activity and improve gait score in meat-type chickens
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DOI：
10.1093/ps/81.12.1798
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发表时间：
2002-12-01
期刊：
影响因子：
4.4
通讯作者：
Faure, JM
中科院分区：
文献类型：
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作者：
Bizeray, D;Leterrier, C;Faure, JM
为了研究日粮低赖氨酸和高赖氨酸交替顺序饲喂对肉鸡生长发育、步态评分和行为的短期和长期影响，从第2天到第12天，将10只鸡分成6组，分别饲喂标准正常赖氨酸日粮(NL)(ME=3,250千卡/公斤，CP=23%，Lys=1.19%)，其中6组饲喂低赖氨酸日粮(Lys=0.85%)，半天饲喂NL。从第13天到21日龄，所有组都饲喂NL，从第21天到42日龄，顺序(S)鸡在第13天(304+/-6比378+/-7克)和42天(2,588+/-31只比2,714+/-10克)轻于对照鸡，在42天时腿部状况较好(平均GS=1.6+/-0.1比2.1+/-0.11 P小于或等于0.05)。在S饲养的一天里，S雏鸟的食量比NL少，浪费的LL比NL多。与饲喂NL时相比，顺序鸟的站立时间更短，闲置时间更长。顺序鸟比对照鸟花更多的时间进食，在连续进食的一天中，它们逐渐增加窝中的啄木鸟数量。结果表明，食物组成对行为有很大影响。顺序饲养可能是减少肉鸡腿部问题的一种方法。
This study investigated the short- and long-term effects of sequential feeding by alternating low- and high-lysine diets during the day on growth, gait score (GS), and behavior in broilers.From Days 2 to 12, 6 pens of 10 birds were assigned to control treatment and fed a standard normal lysine diet (NL) (ME=3,250 kcal/kg, CP=23%, Lys=1.19%) and six pens of 10 birds were assigned to the sequential treatment and fed a low-lysine diet (LL) (Lys=0.85%) for half of the day and NL for the other half of the day. From Days 13 to 21, all groups were fed NL, and from Days 21 to 42, they were fed a grower diet.Sequential (S) chicks were lighter than Control chicks at Days 13 (304+/-6 vs. 378+/-7 g) and 42 (2,588+/-31 vs. 2,714+/-10 g) and had better leg condition at Day 42 (mean GS=1.6+/-0.1 vs. 2.1+/-0.11 Pless than or equal to0.05). During a day of S feeding, S birds ate less and wasted more LL than NL. Sequential birds spent less time standing and more time lying idle when fed LL than when fed NL. Sequential birds spent more time eating than Control birds, and they gradually increased the number of pecks in the litter during a sequential feeding day.The results suggest a major effect of food composition on behavior. Sequential feeding could be a means of decreasing leg problems in broilers.