Effects of forage ratio in the diet on growth of body, feed efficiency and meat production in Japanese black calves produced in Hyogo prefecture
2005
Noda, M. (Hyogo-ken. Research Center for Agriculture, Forestry and Fisheries, Kasai (Japan)) | Sakase, M. | Fukushima, M. | Oka, A. | Iwaki, F.
42 Japanese Black Calves were used to study the growth in weight and measurements of body after 16 to 40 weeks of age. 10 calves were examined by slaughter experiment. 32 calves were used to feeder cattle, and studied about meat production. (1} The forage ratio treated 20%,40% and 60% roughage was observed. Daily gain from 16 weeks to 40 weeks was 20%-0.92kg , 40%-0.87kg and 60%-0.71kg. Concentrate group grew larger in body weight and daily gain. Group of 60% treated roughage grew little until 28 weeks of age. But the length of abdomen grew larger. (2) The concentrate group treated 20% roughage grew larger by little TDN. (3) The weight and capacity of rumen and reticulum grew larger in high roughage group. Group of 60% treated roughage had much fat in their body. (4) Group of 60% treated roughage grew large until 30 months of age. And they had much carcass weight. There were no effect of forage ratio in the diet on carcass characteristics.
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