The use of urinary excretion of purine metabolites as an index of microbial nitrogen from the rumen in Brahman cattle (Bos indicus) fed with different diets

被引：0
|
作者：
Jetana, Thongsuk [1 ]
Usawang, Sungworn [1 ]
Thongruay, Sirima [1 ]
Tasripoo, Kriengsak [1 ]
Suthikrai, Wanvipa [1 ]
Jintana, Ratree [1 ]
Vongpipatana, Chirapath [1 ]
Kitsamraj, Surlya [1 ]
Sophon, Sunpeth [1 ]
机构：
[1] Chulalongkorn Univ, Fac Vet Sci, Phathumwan 10330, Thailand
来源：
Proceedings of the 44th Kasetsart University Annual Conference: ANIMALS; VETERINARY MEDICINE | 2006年
关键词：
purine derivatives; microbial nitrogen; pineapple waste (Ananas comosus linn. mer.); rice straw (Oryza sativa); pangola hay (Digitaria decumbens); vetiver grass (Vetiveria nemoralis A. Camus); Brahman cattle;
D O I：
暂无
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
Three experiments in Brahman cattle fed with different types of diets, the experiments were conducted to determine microbial nitrogen production from the rumen by using the equation of the relationship between urinary purine derivatives excretion and microbial purines absorption at small intestine which was developed in the temperate. In addition, the efficiency of microbial nitrogen production to nutrient intake on different types of diets were compared among three experiments, The results demonstrated that mathematical equation that was developed in the temperate can be used well to calculate the microbial nitrogen production, and the efficiency of microbial nitrogen production (g MN) to dry matter intake (kg DMI) increased when the N content of diet increased. However, the efficiency of microbial nitrogen production (g MN) to N intake (g N) increased when digestible DMI (kg) in cattle decreased. In conclusion, the efficiency of microbial nitrogen production (g MN) to DMI (kg DMI) depended on the quality of diet.
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页码：18 / 28
页数：11
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