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首页> 外文期刊>Applied Animal Behaviour Science >Behaviour of dairy calves suckling the dam in a barn with automatic milking or being fed milk substitute from an automatic feeder in a group pen
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Behaviour of dairy calves suckling the dam in a barn with automatic milking or being fed milk substitute from an automatic feeder in a group pen

机译：用自动挤奶或从组合笔中的自动喂食器喂奶代乳品的小牛在大棚中哺乳的行为

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The aim of this study was to investigate the suckling behaviour of dairy calves allowed to suckle freely in a barn with an automatic milking (AM) system and how their behaviour differed from the behaviour of calves given milk substitute from an automatic feeder. For the first 8 weeks of life, calves of the dairy breed Swedish Red were either suckling freely (FS, n =16) from the dam in an AM barn or kept in groups with automatic feeding (HM, n =18) with an allowance of 9kg of milk substitute per day. All treatments had concentrate and hay ad lib. Focal calves in FS and HM treatments were observed one day in weeks 2, 4 and 8, at 08:00-10:00 and the FS calves' suckling behaviour was observed for a 24-h period once weekly. The HM calves moved, ate concentrate and ate hay more than the FS calves, whereas the FS calves lay down and ruminated more than the HM calves. Cross-sucking and tongue-rolling were displayed in HM but not in FS calves. Of the suckling bouts recorded in FS calves 80% was on the dam. Four calves were recorded suckling solely on their dam, but most of the calves were observed attempting to suckle or suckling on other cows in the group once or twice. The total suckling time and number of suckling bouts during week 2-8 on all cows decreased with increasing calf age. In conclusion, the free-suckling calves ate less solid feed, rested more and exhibited fewer non-nutritive oral and abnormal behaviours compared to the calves fed milk substitute from an automatic feeder, and some calves often suckled on other cows.
机译：这项研究的目的是调查允许在带有自动挤奶（AM）系统的谷仓中自由哺乳的小牛的哺乳行为，以及它们的行为与用自动喂料器替代牛奶的犊牛的行为有何不同。在生命的前8周，奶牛瑞典红的犊牛在AM谷仓中从坝上自由哺乳（FS，n = 16）或成组地自动喂养（HM，n = 18），有津贴每天需要9公斤牛奶替代品。所有处理均集中处理和随意处理。在第2、4和8周的一天中，在08：00-10：00，每天在FS和HM处理中观察到小牛，每周24小时观察一次FS小牛的哺乳行为。与FS犊牛相比，HM犊牛移动，吃草和吃干草更多，而FS犊牛比HM犊牛更容易躺下和反刍。交叉吸吮和卷舌显示在HM中，但不显示在FS小牛中。 FS小牛记录的哺乳回合中有80％在大坝上。记录到有四头小牛只在其母坝上哺乳，但观察到大多数小牛试图在该组中的其他母牛上哺乳或哺乳一次或两次。随着犊牛年龄的增加，所有奶牛的总哺乳时间和哺乳期数在第2-8周减少。总之，与从自动饲喂器喂养的牛犊相比，自由哺乳的犊牛吃更少的固体饲料，休息更多，并且表现出更少的非营养性口腔行为和异常行为，并且一些犊牛经常在其他母牛身上哺乳。

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