| 摘要 |
PCT No. PCT/SE90/00459 Sec. 371 Date Dec. 17, 1991 Sec. 102(e) Date Dec. 17, 1991 PCT Filed Jun. 27, 1990 PCT Pub. No. WO91/00021 PCT Pub. Date Jan. 10, 1991.The invention relates to a process for optimizing and balancing the composition of the ration feed given to a ruminant by taking a single sample or urine or milk from the ruminant and evaluating the nutrient status of the fore-stomachs with reference to energy and protein. The process comprises: measuring the excretion of urea in the sample; measuring the excretion allantoin in the sample in relation to the excretion of creatinine to calculate an allantoin:creatinine ratio; evaluating the nutrient status of the fore-stomachs as to protein and energy; and adjusting the protein and/or energy content of the ration feed to an optimum level. The calculation of the allantoin:creatinine ratio allows for a single sample of urine or milk to be used in the evaluation of the nutrient status of the ruminant's fore-stomachs. |
