지붕자동개폐식 축사 및 톱밥우상이 한우의 생산성 및 생력사양관리에 미치는 영향 = Effects of Auto-Switchgear Roof and Sawdust Bedding Barn on Production of Korean Native Cattle

다국어 초록 (Multilingual Abstract)

This study was carried out to investigate the effects of auto-switchgear at roof on growth performance and raising management, and to determine the adequate depth of sawdust bedding down at barn in Korean Native Cattle. For this study, a total of 25 heads of Korean Native Cattle were fed at the farm located in Imsil district of Chunbuk province. Treatments were consisted of 5 groups (control :conventional barn 0cm sawdust bedding:T1 :auto-switchgear barn, 0cm;T2:auts-switchgear barn, 10cm;T3:auto-switchgear barn, 20cm;T4:auld-swichgear barn,30cm).
The results of the study were as follows ;
1. Overall means for weight gain of the steers at a control and treatment 1 through 4 were 141. 0, 159.4, 162.8, 148.4 and 153.2kg, and for daily gain were 0,654.0,754.0.687 and 0.709kg, respectively.
2. Average days of reaching slush of wastes at a control and T1 unbedded down with sawdust were 10.2 and 15 days, respectively. Average time for the elimination of slush is shorter at T1 than at a control. The coats of animals at T1 were cleaner than those of a control.
3. For the comparison among the sawdust thickness, the T4 in the average days to slush condition, the 72 in the elimination per unit hour and T4 in the cleanness of the body of animals, respectively.
4. As for the results of chemical analysis of manure with feces and sawdust, the organic matter was lowest as 32% in the control highest as 38% in the T3. The amounts of organic matterrs, phosphate, potassium were adequate to utilize as organic fertilizer, However, the nitrogen content was estimated 0.26-0.55 % and needed to be added.