Sharma A K, Gangwar P C
Acta Physiol Pharmacol Bulg. 1981;7(4):10-9.
Nine normal lactating Murrah buffaloes from Punjab Agricultural University Dairy herd were used to assess the effect of spray and evaporative cooling on certain galactopoietic responses in buffaloes in three equal groups of control (Group I), showers (Group II) and evaporative cooling (Group III). At 10.30, 12.30, 14.30 and 16.30 h daily the animals in Group II were given showers for fifteen minutes while the animals of Group III were kept on evaporative cooling system from 07.00 to 21.00 h daily. All the animals of Groups I, II and III were given showers by splashing water on their bodies with buckets once a day as a general routine being practised in the farm. Physical parameters included were dry bulb temperature, wet bulb temperature, maximum and minimum temperature, light intensity, % R. H., total day length and cooling power of air. The various galactopoietic responses recorded were the let down time, the milking time, the milk yield, the average flow rate, the fat and lactose percentages. The results of this study revealed that the showers amd the evaporative cooling were responsible for increasing the galactopoietic responses, i. e. the milk yield, the milking time, the the average flow rate and decreasing the let down time in both the periods. This may be attributed to the added comfort to such animals.
来自旁遮普农业大学奶牛群的9头正常泌乳的穆拉水牛被用于评估喷雾和蒸发冷却对水牛某些泌乳反应的影响，分为三个相等的组：对照组（第一组）、喷淋组（第二组）和蒸发冷却组（第三组）。每天10:30、12:30、14:30和16:30，第二组的动物接受15分钟的喷淋，而第三组的动物每天从07:00至21:00置于蒸发冷却系统中。第一组、第二组和第三组的所有动物每天都按照农场常规做法，用桶往它们身上泼水进行一次喷淋。记录的物理参数包括干球温度、湿球温度、最高和最低温度、光照强度、相对湿度、全天时长和空气冷却能力。记录的各种泌乳反应有放乳时间、挤奶时间、产奶量、平均流速、脂肪和乳糖百分比。本研究结果表明，喷淋和蒸发冷却均能提高泌乳反应，即在两个时间段内提高产奶量、挤奶时间、平均流速并缩短放乳时间。这可能归因于给这些动物增加了舒适度。
