1. Official Methods of Analysis,1984
2. Fatty acid digestibility in lactating cows fed increasing amounts of protected vegetable oil, fish oil, or saturated fat;Børsting;Acta Agric. Scand. Sect. A Anim. Sci.,1992
3. Modified reagents for determination of urea and ammonia;Chaney;Clin. Chem.,1962
4. Nutritional factors influencing the nitrogen composition of bovine milk: a review;DePeters;J. Dairy Sci.,1992
5. Feeding tallow triglycerides of different saturation and particle size to lactating dairy cows;Eastridge;J. Dairy Sci.,1992