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pro vyhledávání: '"John Nolan"'
Autor:
R. A. Leng, John Nolan
Publikováno v:
Journal of dairy science. 67(5)
Nitrogen metabolism is reviewed with emphasis on methods for quantitating various nitrogen-transactions in the rumen of animals on a variety of diets. Ammonia kinetics, microbial cell synthesis, the inputs of endogenous nitrogen, degradation of dieta
Publikováno v:
The British journal of nutrition. 54(1)
1. Nitrogen kinetics were studied in six sheep (45–55 kg live weight) consuming either a high-N grass silage or a low-N dried grass made from swards of perennial ryegrass (Lolium perenne). The diets were fed hourly at a level of 600 g dry matter/d
Publikováno v:
The British journal of nutrition. 46(2)
1. Experiments were undertaken to examine the kinetics of large ciliate protozoa in the rumen of cattle on sugar-cane diets.2. Three Zebu bulls were fed once daily on a diet of sugar cane and wheat bran. The diurnal patterns of volatile fatty acids a
Autor:
John Nolan, R. M. Dixon
Publikováno v:
The British journal of nutrition. 50(3)
1. A study was made of nitrogen kinetics in the large intestine of sheep given 800 g chopped lucerne (Medicago sativa) hay/d. Four sheepwere continuously infused with (15NH4)2SO4into the caecum and three other sheep were infused intravenously with [1
Autor:
R. M. Dixon, John Nolan
Publikováno v:
The British journal of nutrition. 47(2)
1. Fermentation and absorption of constituents of digesta in segments of the large intestine of sheep given different diets were studied by analysis of gut contents obtained at slaughter after a period during which the sheep had been administered a n
Autor:
R. M. Dixon, John Nolan
Publikováno v:
The British journal of nutrition. 55(2)
1. Experiments involving 15N and 14C tracers were made in sheep consuming 800 g air-dry chopped lucerne (Merlicugo sativa) hay/d and providing 20.4 g N/d to study N and C flows within the caecal digesta and between the caecum, blood and rumen.2. Cont