< Topic > One division (1 dayss amount) of the rotary board does not become too small, the using selfishness is good, the ideal propagation management rotary board is offered to management of propagation of the cow of the propagation farmer who designates 1 year 1 product as target.Solutions As for propagation management rotary board 1, movable side component 3 of the disc-like which revolution is possibly provided concentrically fixed side component vis-a-vis 2 of the disc-like and fixed side component 2 and, it has. Splitting into the field 140 in the rim section according to circumferential direction, the date indicatory field 5 which was formed is provided in fixed side component 2. After the childbirth where date indicatory field 5 shows childbirth day and follows to that with the digit of 0, 1 days are shown and after the childbirth where is also artificial insemination day of 1 year 1 product limit from 1 80 days are shown and the 1st date indicatory field 7 where the digit to of 80 is displayed in clockwise sequence and, continuing in 1st date indicatory field, 7 it is provided, after the artificial inseminating shows 1 days after the artificial inseminating 59 days are shown from and the 2nd date indicatory field where the digit to 1 of 59 is displayed in clockwise sequence8 and it has consisted of.< Choice figure > Drawing 1【課題】 回転盤のひと目盛(1日分)が細かくなりすぎず、使い勝手の良い、「1年1産」を目標とする繁殖農家の牛の繁殖管理に好適な繁殖管理回転盤を提供する。【解決手段】 繁殖管理回転盤1は、円板状の固定側部材2と、固定側部材2に対して同心状に回転可能に設けられた円板状の可動側部材3と、を備えている。固定側部材2には、その外周部に円周方向に沿って140個の領域に分割して形成された日付表示欄5が設けられている。日付表示欄5は、分娩日を示す“0”の数字と、それに続く分娩後1日を示す“1”から1年1産リミットの人工授精日ともなる分娩後80日を示す“80”までの数字とが時計方向に順に表示された第1の日付表示欄7と、第1の日付表示欄7に続けて設けられ、人工授精後1日を示す“1”から人工授精後59日を示す“59”までの数字が時計方向に順に表示された第2の日付表示欄8とからなっている。【選択図】 図1
