Publication Date
1985
Location
Kyoto Japan
Description
This study was undertaken because there is a paucity of information in the literature on the efficiency of microbial protein synthesis in the rumen of cattle when grass is fed as the sole diet. There is also little experimental data available on the factors which affect the efficiency of microbial protein synthesis. The work involved feeding six rumen fistulated Friesian steers with three species of grass which were harvested at various tages of maturity. In addition each maturity of forage was fed at three 15levels of orp5 nic matter ( OM) intake.
as sampled at the omasum and microbial protein was labelled with Nitrogen( N). The results show that there was a significant difference between grass species in the efficiency of microbial protein synthesis in the rumen. The temperate species had the highest efficiency compared to the tropical species (27 versus 20 and 16g microbial N per 1000g truely fermented OM). There was a marked reduction in the efficiency of microbial protein synthesis with the advancing maturity of kikuyu (24 versus llg microbial N per 1000g truely fermented OM), but for oats and paspalum there was little effect of the stage of maturity. Generally the level of OM intake (5.7 to 2.7 kg per day) had little effect on the efficiency of microbial protein synthesis in the rumen. The significance of the present study is to show how different species of forage and the stage of maturity of the forage can markedly effect the efficiency of microbial protein synthesis and indirectly the supply of amino acids to the small intestine of the host animal.
Citation
Hart, F J. and Leibholz, Jane, "The Effect of the Species, Stage of Maturity and Level of Intake of Grass on the Efficiency of Microbial Protein Synthesis in the Rumen of Cattle" (1985). IGC Proceedings (1985-2023). 4.
(URL: https://uknowledge.uky.edu/igc/1985/ses10/4)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
The Effect of the Species, Stage of Maturity and Level of Intake of Grass on the Efficiency of Microbial Protein Synthesis in the Rumen of Cattle
Kyoto Japan
This study was undertaken because there is a paucity of information in the literature on the efficiency of microbial protein synthesis in the rumen of cattle when grass is fed as the sole diet. There is also little experimental data available on the factors which affect the efficiency of microbial protein synthesis. The work involved feeding six rumen fistulated Friesian steers with three species of grass which were harvested at various tages of maturity. In addition each maturity of forage was fed at three 15levels of orp5 nic matter ( OM) intake.
as sampled at the omasum and microbial protein was labelled with Nitrogen( N). The results show that there was a significant difference between grass species in the efficiency of microbial protein synthesis in the rumen. The temperate species had the highest efficiency compared to the tropical species (27 versus 20 and 16g microbial N per 1000g truely fermented OM). There was a marked reduction in the efficiency of microbial protein synthesis with the advancing maturity of kikuyu (24 versus llg microbial N per 1000g truely fermented OM), but for oats and paspalum there was little effect of the stage of maturity. Generally the level of OM intake (5.7 to 2.7 kg per day) had little effect on the efficiency of microbial protein synthesis in the rumen. The significance of the present study is to show how different species of forage and the stage of maturity of the forage can markedly effect the efficiency of microbial protein synthesis and indirectly the supply of amino acids to the small intestine of the host animal.
