Stoĭkov D, Shishkov I
Vet Med Nauki. 1976;13(8):43-7.
Experiments were carried out in 1975 with feeding urea-phosphate to year-old sheep of the Black face Plevenska breed in the course of three months. Results showed that giving urea-phosphate instead of urea produces a favourable effect on the digestibility of nutrient matter, the coefficient of digestibility of the test group sheep rising as follows: for fats--11.12 at p less than 0.001; for proteins--5.10 at p less than 0.01; for phosphorus--10.0 per cent (p less than 0.01); etc. Dietary nitrogen was used 83.05 per cent (p less than 0.001) better when ureaphosphate was offered. A ration composed of meadow hay 1000 g, maize mash 300 g, barley mash 100 g, lime 5 g, sodium chloride 10 g, and urea-phosphate 15 g influenced favorably productivity of sheep, the weight gain rising by 90 per cent (p less than 0.001). Mutton obtained from sheep fed urea-phosphate the rate of 0.4 g per kg proved of higher quality, containing more protein and less fats, the dressing percentage being 3.5 per cent higher.
1975年进行了实验，在三个月的时间里给普列文斯卡黑脸品种的一岁绵羊喂饲磷酸脲。结果表明，用磷酸脲代替尿素对营养物质的消化率产生了有利影响，试验组绵羊的消化系数提高如下：脂肪——提高11.12，p<0.001；蛋白质——提高5.10，p<0.01；磷——提高10.0%（p<0.01）等。提供磷酸脲时，日粮氮的利用率提高了83.05%（p<0.001）。由1000克草地干草、300克玉米糊、100克大麦糊、5克石灰、10克氯化钠和15克磷酸脲组成的日粮对绵羊的生产力产生了有利影响，体重增加了90%（p<0.001）。以每千克0.4克的比例喂饲磷酸脲的绵羊所产羊肉质量更高，蛋白质含量更高，脂肪含量更低，屠宰率高3.5%。
