Tables and Figures

This study aimed to evaluate the effects of varying fat levels and ratios of coconut to palm fat on solid feed intake and growth performance of male dairy calves fed high allowance of milk replacer. Calves were fed three different levels of fat (17 %, 24 %, 31 %) in study 1, and three different coconut to palm fat ratios (20:80, 35:65, and 50:50 %) in study 2. Results showed that feeding a low-fat milk replacer (17 % of the DM) formulated with a spray-dried blend of 20 % coconut to 80 % palm fat promoted solid feed intake and growth performance, and that feeding a spray-dried blend of 35 % coconut to 65 % palm fat, included at 21 % fat in the DM, resulted in greater growth performance. This study suggests that fat levels and different ratios of coconut to palm fat may be used to modulate solid feed intake and improve calf growth performance of calves fed high allowance of milk replacer.

本研究旨在评估不同脂肪水平及椰子脂与棕榈脂的配比对饲喂高饲喂量代乳粉的公犊牛固体采食量与生长性能的影响。试验1中，犊牛饲喂三种不同脂肪水平（占干物质（Dry Matter，DM）的17%、24%、31%）的代乳粉；试验2中，犊牛则饲喂三种不同椰子脂与棕榈脂配比（20:80、35:65、50:50）的代乳粉。结果显示，采用20%椰子脂与80%棕榈脂喷雾干燥混合油脂配制的低脂代乳粉（脂肪占DM的17%），可提升犊牛的固体采食量与生长性能；而采用35%椰子脂与65%棕榈脂喷雾干燥混合油脂配制、脂肪占DM的21%的代乳粉，则可使犊牛获得更优异的生长性能。本研究表明，脂肪水平与不同椰子脂-棕榈脂配比可用于调控饲喂高饲喂量代乳粉的公犊牛的固体采食量，并改善其生长性能。