Journal of the Faculty of Fisheries and Animal Husbandry, Hiroshima University Volume 7 Issue 2
1968-09-30 発行

鶏の消化に関する基礎的研究Ⅳ : 消化に及ぼす砂礫の影響について

Fundamental studies on the digestion in the domestic fowl IV : Effects of the grit on the digestibility of feed
Otani, Isao
Yamatani, Yoji
Sasaki, Masao
Experiments on the effects of grit feeding upon the digestibility were performed on three adult male White Leghorn adapted with artificial ani. They were fed on two types of diet: all-mash and mashgrain rations. The hens had not been allowed access to grit for about 6 months before the experiments, it was ascertained by means of X rays, that the gizzard contained no grit at all.
1) When mash-grain rations were given after feeding grit, the improvement of the digestibility of all constituents was evident.
2) when all-mash rations were given, the effect of feeding grit was, in general, slight.
3) The influence of grit on the digestion trials of all constituents showed most noticeably in crude fiber.