5 results on '"Tianhai Yan"'
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2. Prediction of manure nitrogen output for a whole lactation period using long-term production data of dairy cows.
3. Predicting nitrogen excretion from beef cattle on diets with contrasting protein content.
4. Effects of dietary protein level on feed intake, milk production and nutrient digestibility by lactating Holstein-Friesian cows.
5. Comparison of nitrogen excretion rate of dairy cattle at different physiological states (calf vs growing vs lactating vs dry period).
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