Heinrichs A J, Conrad H R
J Dairy Sci. 1987 Mar;70(3):705-11. doi: 10.3168/jds.S0022-0302(87)80061-9.
Length, size, and interval between eating bouts were determined for four forages with two lactating dairy cows. The forages were low dry matter alfalfa haylage, high dry matter alfalfa haylage, alfalfa hay, and alfalfa pellets. Recordings were made for 96-h periods, and nibbling bouts were separated from meals according to the time and weight of eating bouts. Meal data were analyzed by a stepwise least squares analysis to determine the best model for characterizing feed intake data for lactating dairy cows. Initial meal size and lengths were not different; however, interval following the initial meal was longer on the alfalfa pellet diet. Spontaneous meals were similar in number and size for all diets; however, meal length was increased on the alfalfa hay diet. Total daily dry matter intakes were not different for the four diets. It is important to distinguish between nibbling and meals for effective analysis of intake, feeding behavior, and meal patterns.
用两头泌乳奶牛对四种草料测定了采食次数的时长、大小和间隔。这些草料分别是低干物质苜蓿青贮料、高干物质苜蓿青贮料、苜蓿干草和苜蓿颗粒料。记录时长为96小时，根据采食次数的时间和重量将啃咬次数与进食餐次区分开来。通过逐步最小二乘法分析餐次数据，以确定用于表征泌乳奶牛采食量数据的最佳模型。初始餐次大小和时长并无差异；然而，苜蓿颗粒料日粮中初始餐次后的间隔时间更长。所有日粮的自发餐次在数量和大小上相似；然而，苜蓿干草日粮的餐次时长增加。四种日粮的每日总干物质摄入量并无差异。为有效分析采食量、采食行为和餐次模式，区分啃咬和餐次很重要。
