Department of Biological Sciences, University of New Hampshire, Durham 03824, USA.
J Dairy Sci. 2012 Feb;95(2):856-8. doi: 10.3168/jds.2011-4826.
Kelp is a common feed additive used on many dairy farms in the United States. However, few data are available supporting the efficacy of its addition to cattle feed. The purpose of this study was to evaluate the taste preferences of calves provided with 0, 30, or 60 g of kelp daily in a sequential elimination experiment. Calves in this study always ranked the control treatment first when given a choice and consumed 34.5% more dry matter from the control treatment in the first 3-d segment of the experiment. During the second feeding segment (d 4 and 5), when the control treatment was removed, daily dry matter consumption was reduced in 4 out of 6 calves compared with control calves when this treatment was available (first feeding segment). However, calves did not differentiate between the 2 amounts of kelp. Results indicated that calves preferred calf starter grains without kelp.
海带是美国许多奶牛场常用的一种饲料添加剂。然而，很少有数据支持在牛饲料中添加海带的功效。本研究的目的是在一个逐步淘汰实验中评估每天给小牛提供 0、30 或 60 克海带时的味觉偏好。在这个研究中，当有选择时，小牛总是将对照处理排在第一位，并且在实验的前 3 天段中从对照处理中消耗了 34.5%的更多干物质。在第二个喂养段（第 4 和第 5 天），当去除对照处理时，与对照小牛相比，在有这种处理（第一个喂养段）时，6 头小牛中有 4 头的每日干物质消耗量减少。然而，小牛并没有区分这两种海带的用量。结果表明，小牛更喜欢没有海带的小牛代乳料。
