02186naa a2200265 a 450000100080000000500110000800800410001902400560006010000150011624501210013126000090025252013650026165000100162665000210163665000240165765000130168165000230169465000120171765000150172965300290174465300260177370000190179970000190181877300830183715208862023-06-29 1975 bl uuuu u00u1 u #d7 ahttps://doi.org/10.1080/00128325.1975.116627462DOI1 aMBA, A. U. aNitrogen-balance studies with red sokoto (Maradi) goats for the minimum protein requirements.h[electronic resource] c1975 aEight Red Sokoto (Maradi) castrated goats in their early maturity, weighing between 16 and 21 kg were used. Two sources of nitrogen (N), urea and groundnut/palm kernel cake mixture, were used at four levels of crude protein (N x 6.25), viz., 1, 5, 9 and 13 per cent, in cassava flour-based rations. These rations were then used as supplements to dry, poor quality Cynodon nlemfuensis forage (4.5 per cent CP). The results for the two sources of N indicate that linear relationship exists between absorbed N and N intake, retained N and N intake as well as between retained N and absorbed N. From these regression equations, it is estimated that at zero N-balance (or N equilibrium) the daily N intake per Wkg°. 734 was 0.74g for the mixed protein and 0.36g for the urea rations. However, the protein-fed goat and the ureafed goat required 0.35g digestible N (2.20g DCP) and 0.13g digestible N (0.81g DCP) per Wk ,°. 734 respectively for maintenance. The protein-fed goat therefore required 2.7 times as much digestible N as the urea-fed goat for N equilibrium. The digestibility, retention and indices of "biological values" were also higher, indicating better utilization of the urea-N than the protein-N contents of the rations. These goats therefore required far less protein than that normally recommended for sheep or goats in the temperate environment. aGoats aNitrogen balance aProtein requirement aProteins aRuminant nutrition aCaprino aNutrição aNutritional requirements aRequerimento proteico1 aEGBUIWE, C. P.1 aDYENUGA, V. A. tEast African Agricultural and Forestry Journalgv. 40, n. 3, p. 285-291, 1975.