The Experts below are selected from a list of 20109 Experts worldwide ranked by ideXlab platform

H C Kirby - One of the best experts on this subject based on the ideXlab platform.

  • the effect of protein supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets
    Journal of Animal Science, 2001
    Co-Authors: A R Castillo, Ermias Kebreab, David E. Beever, J H Barbi, J D Sutton, H C Kirby
    Abstract:

    The study set out to examine the effects of supplementing grass silage with various levels of protein concentration and Degradability on dietary ni- trogen (N) excretion in lactating dairy cows consuming at least 60% forage. Six Holstein/Friesian cows in early to midlactation were offered six diets comprising two levels of crude protein (210 and 290 g/kg DM) and three levels of protein Degradability in the concentrate achieved using different amounts of untreated or form- aldehyde-treated soybean meal. Despite a difference of almost 100 g/d in N intake, apparent fecal and milk N outputs were not significantly affected. Protein degra- dability also had no effect on N outputs in feces and milk. However, there was a major effect of both level and Degradability of CP on urinary N output. Moreover,

  • the effect of protein supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets
    Journal of Animal Science, 2001
    Co-Authors: A R Castillo, J D Sutto, Ermias Kebreab, D E Eeve, J H Arbi, H C Kirby
    Abstract:

    The study set out to examine the effects of supplementing grass silage with various levels of protein concentration and Degradability on dietary nitrogen (N) excretion in lactating dairy cows consuming at least 60% forage. Six Holstein/Friesian cows in early to midlactation were offered six diets comprising two levels of crude protein (210 and 290 g/kg DM) and three levels of protein Degradability in the concentrate achieved using different amounts of untreated or formaldehyde-treated soybean meal. Despite a difference of almost 100 g/d in N intake, apparent fecal and milk N outputs were not significantly affected. Protein Degradability also had no effect on N outputs in feces and milk. However, there was a major effect of both level and Degradability of CP on urinary N output. Moreover, an interaction between level and Degradability of CP was detected, such that the rate at which urinary N increases with increasing CP Degradability was higher on the high-CP than on the low-CP diet. A low level of protein (150 g/kg DM in the diet) and medium to low rumen-degradable protein supplements provided a significant reduction in N excretion without compromising lactational performance (mean 24.8 kg/d), in terms of both milk yield and composition. This study also demonstrated that a high efficiency of N utilization could be achieved on low-CP diets (supplying less than 400 g N/d), with feces being the main route of N excretion, whereas an exponential excretion of urinary N was observed as N intake exceeded 400 g N/d.

A R Castillo - One of the best experts on this subject based on the ideXlab platform.

  • the effect of protein supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets
    Journal of Animal Science, 2001
    Co-Authors: A R Castillo, Ermias Kebreab, David E. Beever, J H Barbi, J D Sutton, H C Kirby
    Abstract:

    The study set out to examine the effects of supplementing grass silage with various levels of protein concentration and Degradability on dietary ni- trogen (N) excretion in lactating dairy cows consuming at least 60% forage. Six Holstein/Friesian cows in early to midlactation were offered six diets comprising two levels of crude protein (210 and 290 g/kg DM) and three levels of protein Degradability in the concentrate achieved using different amounts of untreated or form- aldehyde-treated soybean meal. Despite a difference of almost 100 g/d in N intake, apparent fecal and milk N outputs were not significantly affected. Protein degra- dability also had no effect on N outputs in feces and milk. However, there was a major effect of both level and Degradability of CP on urinary N output. Moreover,

  • the effect of protein supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets
    Journal of Animal Science, 2001
    Co-Authors: A R Castillo, J D Sutto, Ermias Kebreab, D E Eeve, J H Arbi, H C Kirby
    Abstract:

    The study set out to examine the effects of supplementing grass silage with various levels of protein concentration and Degradability on dietary nitrogen (N) excretion in lactating dairy cows consuming at least 60% forage. Six Holstein/Friesian cows in early to midlactation were offered six diets comprising two levels of crude protein (210 and 290 g/kg DM) and three levels of protein Degradability in the concentrate achieved using different amounts of untreated or formaldehyde-treated soybean meal. Despite a difference of almost 100 g/d in N intake, apparent fecal and milk N outputs were not significantly affected. Protein Degradability also had no effect on N outputs in feces and milk. However, there was a major effect of both level and Degradability of CP on urinary N output. Moreover, an interaction between level and Degradability of CP was detected, such that the rate at which urinary N increases with increasing CP Degradability was higher on the high-CP than on the low-CP diet. A low level of protein (150 g/kg DM in the diet) and medium to low rumen-degradable protein supplements provided a significant reduction in N excretion without compromising lactational performance (mean 24.8 kg/d), in terms of both milk yield and composition. This study also demonstrated that a high efficiency of N utilization could be achieved on low-CP diets (supplying less than 400 g N/d), with feces being the main route of N excretion, whereas an exponential excretion of urinary N was observed as N intake exceeded 400 g N/d.

Jungwoog Shin - One of the best experts on this subject based on the ideXlab platform.

  • promotion of in vivo Degradability vascularization and osteogenesis of calcium sulfate based bone cements containing nanoporous lithium doping magnesium silicate
    International Journal of Nanomedicine, 2017
    Co-Authors: Liehu Cao, Weizong Weng, Xiao Chen, Jun Zhang, Qirong Zhou, Jin Cui, Yuechao Zhao, Jungwoog Shin
    Abstract:

    Nanoporous lithium doping magnesium silicate (nl-MS) was introduced into calcium sulfate hemihydrate to prepare calcium sulfate composite (nl-MSC) bone cements. The introduction of nl-MS improved the in vitro Degradability of nl-MSC cements, which could neutralize acidic degradable products of calcium sulfate and prevented the pH from dropping. The cements were implanted into the bone defects of femur bone of rabbits, and the results of histological and immunohistochemical analysis revealed that massive new bone tissue formed in the defects while the cements were degradable, indicating that the osteogenesis and Degradability of the nl-MSC cements were much better than the control calcium sulfate dihydrate (CSD) cements. Furthermore, the positive expression of vascular endothelial growth factor and collagen type I for nl-MSC cements was higher than CSD, indicating that addition of nl-MS into the cements enhanced vascularization and osteogenic differentiation. The results suggested that the nl-MSC cements with good biocompatibility and Degradability could promote vascularization and osteogenesis, and had great potential to treat bone defects.

Ermias Kebreab - One of the best experts on this subject based on the ideXlab platform.

  • the effect of protein supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets
    Journal of Animal Science, 2001
    Co-Authors: A R Castillo, Ermias Kebreab, David E. Beever, J H Barbi, J D Sutton, H C Kirby
    Abstract:

    The study set out to examine the effects of supplementing grass silage with various levels of protein concentration and Degradability on dietary ni- trogen (N) excretion in lactating dairy cows consuming at least 60% forage. Six Holstein/Friesian cows in early to midlactation were offered six diets comprising two levels of crude protein (210 and 290 g/kg DM) and three levels of protein Degradability in the concentrate achieved using different amounts of untreated or form- aldehyde-treated soybean meal. Despite a difference of almost 100 g/d in N intake, apparent fecal and milk N outputs were not significantly affected. Protein degra- dability also had no effect on N outputs in feces and milk. However, there was a major effect of both level and Degradability of CP on urinary N output. Moreover,

  • the effect of protein supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets
    Journal of Animal Science, 2001
    Co-Authors: A R Castillo, J D Sutto, Ermias Kebreab, D E Eeve, J H Arbi, H C Kirby
    Abstract:

    The study set out to examine the effects of supplementing grass silage with various levels of protein concentration and Degradability on dietary nitrogen (N) excretion in lactating dairy cows consuming at least 60% forage. Six Holstein/Friesian cows in early to midlactation were offered six diets comprising two levels of crude protein (210 and 290 g/kg DM) and three levels of protein Degradability in the concentrate achieved using different amounts of untreated or formaldehyde-treated soybean meal. Despite a difference of almost 100 g/d in N intake, apparent fecal and milk N outputs were not significantly affected. Protein Degradability also had no effect on N outputs in feces and milk. However, there was a major effect of both level and Degradability of CP on urinary N output. Moreover, an interaction between level and Degradability of CP was detected, such that the rate at which urinary N increases with increasing CP Degradability was higher on the high-CP than on the low-CP diet. A low level of protein (150 g/kg DM in the diet) and medium to low rumen-degradable protein supplements provided a significant reduction in N excretion without compromising lactational performance (mean 24.8 kg/d), in terms of both milk yield and composition. This study also demonstrated that a high efficiency of N utilization could be achieved on low-CP diets (supplying less than 400 g N/d), with feces being the main route of N excretion, whereas an exponential excretion of urinary N was observed as N intake exceeded 400 g N/d.

Xiao Chen - One of the best experts on this subject based on the ideXlab platform.

  • effects of sintering temperature on surface morphology microstructure in vitro Degradability mineralization and osteoblast response to magnesium phosphate as biomedical material
    Scientific Reports, 2017
    Co-Authors: Zhiwei Wang, Weizong Weng, Xiao Chen, Quan Li, Jiacan Su
    Abstract:

    Magnesium phosphate (MP) was fabricated using a chemical precipitation method, and the biological performances of MP sintered at different temperatures as a biomedical material was investigated. The results indicated that the densification and crystallinity of MP increased as the sintering temperature increased. As the sintering temperature increased, the Degradability of MP in PBS decreased, and the mineralization ability in SBF significantly increased. In addition, the MP sintered at 800 °C (MP8) possessed the lowest Degradability and highest mineralization ability. Moreover, the positive response of MG63 cells to MP significantly increased as the sintering temperature increased, and MP8 significantly promoted the cell spreading, proliferation, differentiation and expressions of osteogenic differentiation-related genes. Faster degradation of MP0 resulted in higher pH environments and ion concentrations, which led to negative responses to osteoblasts. However, the appropriate degradation of MP8 resulted in suitable pH environments and ion concentrations, which led to positive responses to osteoblasts. This study demonstrated that the sintering temperature substantially affected the surface morphology/microstructure, Degradability and mineralization, and osteoblasts response to magnesium phosphate.

  • promotion of in vivo Degradability vascularization and osteogenesis of calcium sulfate based bone cements containing nanoporous lithium doping magnesium silicate
    International Journal of Nanomedicine, 2017
    Co-Authors: Liehu Cao, Weizong Weng, Xiao Chen, Jun Zhang, Qirong Zhou, Jin Cui, Yuechao Zhao, Jungwoog Shin
    Abstract:

    Nanoporous lithium doping magnesium silicate (nl-MS) was introduced into calcium sulfate hemihydrate to prepare calcium sulfate composite (nl-MSC) bone cements. The introduction of nl-MS improved the in vitro Degradability of nl-MSC cements, which could neutralize acidic degradable products of calcium sulfate and prevented the pH from dropping. The cements were implanted into the bone defects of femur bone of rabbits, and the results of histological and immunohistochemical analysis revealed that massive new bone tissue formed in the defects while the cements were degradable, indicating that the osteogenesis and Degradability of the nl-MSC cements were much better than the control calcium sulfate dihydrate (CSD) cements. Furthermore, the positive expression of vascular endothelial growth factor and collagen type I for nl-MSC cements was higher than CSD, indicating that addition of nl-MS into the cements enhanced vascularization and osteogenic differentiation. The results suggested that the nl-MSC cements with good biocompatibility and Degradability could promote vascularization and osteogenesis, and had great potential to treat bone defects.