Below is an instruction that describes a task. Write a response that appropriately completes the request in Chinese. Please answer in Chinese.

### Instruction:
 汉娜的家庭在农场上有十头猪。他们的奶牛数量是猪的两倍减去三头，而山羊数量比奶牛多六头。他们农场上有多少动物？


### Response:
 奶牛的数量是2 * 10 - 3 = <<2*10-3=17>>17头。
山羊的数量是17 + 6 = <<17+6=23>>23只。
农场上的动物数量是10 + 17 + 23 = <<10+17+23=50>>50只。