Relationship between dry matter, fibre and nitrogen degradation characteristics of silage and silage intake of steers

2000 ◽  
Vol 70 (3) ◽  
pp. 537-546 ◽  
Author(s):  
L.E.R. Dawson ◽  
R.W.J. Street
Keyword(s):  
Dry Matter ◽  
Live Weight ◽  
Ammonia Concentration ◽  
Fibre Concentration ◽  
The Poor ◽  
Acid Detergent Fibre ◽  
Highly Correlated ◽  
The Relationship ◽  
Poor Relationship

AbstractA study was carried out to examine the relationship between silage intake and rumen degradability characteristics of silage. The dry matter (DM), neutral-detergent fibre (NDF), acid-detergent fibre (ADF), hemicellulose and nitrogen (N) degradability characteristics of 136 silages were determined using polyester bags in three rumen fistulated beef cross steers. The bags were incubated for 0, 6, 12, 24, 48 and 72 h. Intakes of these silages, by steers, were reported by Steen et al., 1998. The relationships between silage DM intake (g/kg metabolic live weight) and DM, fibre and N degradability characteristics of the silages were poor (R2 < 0·32). Degradability characteristics of the silages were highly negatively correlated with fibre concentration of the silages (R < –0·82) and highly positively correlated with the soluble N minus ammonia concentration (R < 0·77). Some of the degradability characteristics were highly correlated with organic matter digestibility, particularly the proportion of DM, fibre and N degraded after 72 h (R = 0·75 to 0·85). In view of the poor relationship between silage intake and degradability, the results of this study question the rôle of degradation characteristics of DM, fibre and N in the rumen on silage intake.

Prediction of the voluntary intake of grass silages by beef cattle. 1. Linear regression analyses

1990 ◽  
Vol 50 (3) ◽  
pp. 425-438 ◽  
Author(s):  
A. J. Rook ◽  
M. Gill
Keyword(s):  
Dry Matter ◽  
Volatile Fatty Acids ◽  
Live Weight ◽  
Ammonia Nitrogen ◽  
Dry Matter Intake ◽  
Digestible Organic Matter ◽  
Voluntary Intake ◽  
Relationship Of ◽  
The Relationship ◽  
Linear Regressions

ABSTRACTData on individually recorded silage dry-matter intake (SDMI), concentrate dry-matter intake (CDMI) and live weight of steers and data on silage composition including toluene dry matter (TDM), pH, total nitrogen (N), ammonia nitrogen (NH3-N), volatile fatty acids (VFAs), digestible organic matter in the dry matter (DOMD) and neutral-detergent fibre (NDF) obtained from experiments conducted at three sites were used to obtain simple and multiple linear regressions of SDMI on other variables.Live weight accounted for a high proportion of the variation in intake but this effect could generally be removed by scaling intake by live weight raised to the power of 0·75 (M0·75). CDMI was the most important factor affecting scaled intake in mixed diets. TDM, NH,-N and VFAs all had important effects on SDMI. The relationship of SDMI with TDM was curvilinear suggesting that there is little to be gained in intake terms from wilting to TDM above 250 g/kg. The effect of NH3-N appeared to be related more to its correlation with VFAs than with any other nitrogenous constituent while the VFAs appeared to have a direct effect on SDMI. The effects of N and pH on SDMI were generally small. DOMD and NDF had relatively little effect on SDMI. Significant differences in intercepts between sites were found for most relationships although common slopes were often found.

Collective action among rural poor

2019 ◽  
Vol 37 (1) ◽  
pp. 20-43
Author(s):  
George Okello Candiya Bongomin ◽  
John C. Munene ◽  
Joseph Mpeera Ntayi ◽  
Charles Akol Malinga
Keyword(s):  
Collective Action ◽  
Financial Institutions ◽  
Financial Intermediation ◽  
Financial Inclusion ◽  
Content Type ◽  
Mediating Role ◽  
The Poor ◽  
Bootstrap Approach ◽  
The Relationship

PurposeThe purpose of this paper is to establish the mediating role of collective action in the relationship between financial intermediation and financial inclusion of the poor in rural Uganda.Design/methodology/approachThe paper uses structural equation modeling (SEM) through bootstrap approach constructed using analysis of moment structures to test for the mediating role of collective action in the relationship between financial intermediation and financial inclusion of the poor in rural Uganda. Besides, the paper adopts Baron and Kenny’s (1986) approach to establish whether conditions for mediation by collective action exist.FindingsThe results revealed that collective action significantly mediates the relationship between financial intermediation and financial inclusion of the poor in rural Uganda. The findings further indicated that the mediated model had better model fit indices than the non-mediated model under SEM bootstrap. Furthermore, the results showed that both collective action and financial intermediation have significant and direct impacts on financial inclusion of the poor in rural Uganda. Therefore, the findings suggest that the presence of collective action boost financial intermediation for improved financial inclusion of the poor in rural Uganda.Research limitations/implicationsThe study used quantitative data collected through cross-sectional research design. Further studies through the use of interviews could be adopted in future. Methodologically, the study adopted use of SEM bootstrap approach to establish the mediating effect of collective action. However, it ignored the Sobel’s test and MedGraph methods. Future studies could adopt the use of alternative methods of Sobel’s test and MedGraph. Additionally, the study focused only on semi-formal financial institutions. Hence, further studies may consider the use of data collected from formal and informal institutions.Practical implicationsPolicy makers and managers of financial institutions should consider the role of collective action in promoting economic development, especially in developing countries. They should create structures and design financial services and products that promote collective action among the poor in rural Uganda.Originality/valueAlthough several scholars have articulated financial inclusion based on both the supply and demand side factors, this is the first study to test the mediating role of collective action in the relationship between financial intermediation and financial inclusion of the poor in rural Uganda using SEM bootstrap approach. Theoretically, the study combines the role of collective action with financial intermediation to promote financial inclusion. Financial intermediation theory ignores the role played by collective action in the intermediation process between the surplus and deficit units.

“Until the Day of His Death”

2021 ◽  
Vol 2021 (139) ◽  
pp. 52-74
Author(s):  
Henrique Espada Lima
Keyword(s):  
Nineteenth Century ◽  
Old Age ◽  
Human Aging ◽  
Southern Brazil ◽  
Contractual Arrangements ◽  
The Poor ◽  
Slave Society ◽  
The Relationship ◽  
Over Time

Abstract This article examines postmortem inventories and notarial records from Brazilian slaveholders in southern Brazil in the nineteenth century. By discussing selected cases in detail, it investigates the relationship between “precarious masters” (especially the poor and/or disabled, widows without family, and single elderly slaveholding women and men) and their slaves and former slaves to whom they bequeathed, in their testaments and final wills, manumission and property. The article reads these documents as intergenerational contractual arrangements that connected the masters’ expectations for care in illness and old age with the slaves’ and former slaves’ expectations for compensation for their work and dedication. Following these uneven relationships of interdependence and exploitation as they developed over time, the article suggests a reassessment of the role of paternalism in Brazil during the country’s final century of slavery. More than a tool to enforce relations of domination, paternalism articulated with the dynamics of vulnerability and interdependency as they changed over the life courses of both enslaved people and slave owners. This article shows how human aging became a terrain of negotiation and struggle as Brazilian slave society transformed throughout the nineteenth century.

scholarly journals The Mediating Role of Organizational Commitment on the Relationship between Procedural Justice and Public Service Motivation: A Case of Public Universities in Pakistan

2018 ◽  
Vol 8 (1) ◽  
pp. 266
Author(s):  
Xu Xiaolin ◽  
Nagina Gul ◽  
Arshad Mahmmod Sadozai
Keyword(s):  
Public Service ◽  
Quantitative Research ◽  
Public Universities ◽  
Mediating Effect ◽  
The Public ◽  
Mediating Role ◽  
Highly Correlated ◽  
The Relationship ◽  
Study Questionnaire

This study aims to unearth the interactive role of OC on the relationship between PJ of the PA and PSM in public universities in Pakistan. The study not only discusses that PJ is imperative for the overall PSM, but also discusses how to retain a motivated workforce via OC. Qualitative as well as quantitative research methodology has been adopted in this study. Questionnaire was designed to get the view of employees working in the public universities. The results obtained from 980 employees show that the discharge of PJ is highly correlated with employee perception of OC and that the level of OC is highly correlated with PSM. The results further show that OC has a mediating effect on the relationship between PJ and PSM. The implications of our findings are discussed. 

Poor Little Rich Kids? The Role of Nature versus Nurture in Wealth and Other Economic Outcomes and Behaviours

2019 ◽  
Vol 87 (4) ◽  
pp. 1683-1725 ◽  
Author(s):  
Sandra E Black ◽  
Paul J Devereux ◽  
Petter Lundborg ◽  
Kaveh Majlesi
Keyword(s):  
Adoptive Parents ◽  
Nature Versus Nurture ◽  
Biological Parents ◽  
Wide Range ◽  
Birth Factors ◽  
Nature And Nurture ◽  
Parental Wealth ◽  
Highly Correlated ◽  
The Relationship

Abstract Wealth is highly correlated between parents and their children; however, little is known about the extent to which these relationships are genetic or determined by environmental factors. We use administrative data on the net wealth of a large sample of Swedish adoptees merged with similar information for their biological and adoptive parents. Comparing the relationship between the wealth of adopted and biological parents and that of the adopted child, we find that, even prior to any inheritance, there is a substantial role for environment and a much smaller role for pre-birth factors and we find little evidence that nature/nurture interactions are important. When bequests are taken into account, the role of adoptive parental wealth becomes much stronger. Our findings suggest that wealth transmission is not primarily because children from wealthier families are inherently more talented or more able but that, even in relatively egalitarian Sweden, wealth begets wealth. We further build on the existing literature by providing a more comprehensive view of the role of nature and nurture on intergenerational mobility, looking at a wide range of different outcomes using a common sample and method. We find that environmental influences are relatively more important for wealth-related variables such as savings and investment decisions than for human capital. We conclude by studying consumption as an overall measure of welfare and find that, like wealth, it is more determined by environment than by biology.

scholarly journals Copper, iron, manganese and zinc concentrations in the carcases of lambs and calves and the relationship to trace element requirements for growth

1979 ◽  
Vol 42 (1) ◽  
pp. 89-96 ◽  
Author(s):  
N. F. Suttle
Keyword(s):  
Dry Matter ◽  
Live Weight ◽  
Tissue Storage ◽  
Growth Requirements ◽  
Fe And Mn ◽  
Zinc Concentrations ◽  
The Mean ◽  
Daily Intakes ◽  
Iron Manganese ◽  
The Relationship

1. The minced carcases of twenty-seven lambs, ranging from 18 to 69 kg in live weight, and twenty-five calves (30–90 kg) were analysed for copper, iron, manganese and zinc. The lambs were weaned whereas the calves were reared exclusively on milk.2. Mean concentrations of Fe, Mn and Zn for groups of lamb carcases fell within the ranges 52.6–75.1, 0.7–1.2 and 20.8–25.6 mg/kg fresh carcase weight respectively. The concentrations of Fe and Mn decreased while that of Zn increased slightly with age at slaughter. The concentrations of Fe, Mn and Zn in calves were close to thosein lambs.3. For both species, the concentration of Cu in the carcase varied erratically: variation in hepatic Cu storage was implicated. In an additional study of ten full-term foetuses from Cu-depleted or Cu-supplemented ewes, a dietary Cu supplement (10 mg/kg dry matter (DM)) increased foetal Cu status 10-fold, due largely to an increase in foetal liver Cu.4. The mean retentions of trace elements in the lamb carcases (%intake) were approximately: Cu 2.0, Fe 1.3, Mn 0.08, Zn 4.0. The corresponding values for the milk-fed calves were all probably much higher (Cu 23, Fe 43.7, Mn 4.9, Zn 34.0) but Cu intake was not accurately measured.5. After allowing for tissue storage of Fe and Mn, values of 55, 0.85 and 24 mg/kg carcase gain were taken to represent the approximate net growth requirements of lambs for Fe, Mn and Zn respectively: the corresponding value for Cu was probably < 1.0 mg/kg. Values for calves were similar to those for lambs.6. It was concluded that the total net requirements of ruminants for Fe and Zn shouldbe considered in terms of daily intakes of the metans rather than dietary concentrationsbecause of the relatively large and constant contribution of the growth component to thetotal requirement.

Muscle fatigue in frog semitendinosus: role of intracellular pH

1992 ◽  
Vol 262 (6) ◽  
pp. C1507-C1512 ◽  
Author(s):  
L. V. Thompson ◽  
E. M. Balog ◽  
R. H. Fitts
Keyword(s):  
Intracellular Ph ◽  
Contractile Function ◽  
Resting Membrane Potential ◽  
Slow Phase ◽  
Tetanic Force ◽  
Average Value ◽  
Highly Correlated ◽  
Initial Force ◽  
The Relationship

The purpose of this study was to utilize glass microelectrodes to characterize the intracellular pH (pHi) before and during recovery from fatigue in the frog semitendinosus (ST) muscle. A second objective was to evaluate the relationship between pHi and contractile function. The frog ST muscle (22 degrees C) was fatigued by direct electrical stimulation with 100-ms 150-Hz trains at 1/s for 5 min. Peak tetanic force (Po) was reduced to 8.5% of initial force and recovered in a biphasic manner, returning to the resting value by 40 min. Resting pHi was 7.00 +/- 0.02 (n = 37) and declined with fatigue to an average value of 6.42 at 3 min of recovery. During recovery pHi significantly increased and by 25 min had returned to the prefatigue value. The pHi recovery was highly correlated to the slow phase of Po recovery (r = 0.98, P less than 0.001). The mean resting membrane potential was -78 +/- 1.0 mV (n = 42) and at 3 min of recovery was depolarized to -67 +/- 4 mV. Both the peak rate of twitch force development (+dP/dt) (r = 0.99, P less than 0.001) and decline (-dP/dt) (r = 0.94, P less than 0.014) were highly correlated to pHi during the slow phase of recovery. Contraction time (CT) and one-half relaxation time (1/2RT) increased significantly and recovered exponentially. The recovery of CT and 1/2RT were both significantly correlated to pHi (r = -0.93, P less than 0.001 and r = -0.86, P less than 0.001 for CT and 1/2RT, respectively).(ABSTRACT TRUNCATED AT 250 WORDS)

Exploring the mediating role of social capital in the relationship between financial intermediation and financial inclusion in rural Uganda

2018 ◽  
Vol 45 (5) ◽  
pp. 829-847 ◽  
Author(s):  
George Okello Candiya Bongomin ◽  
John C. Munene ◽  
Joseph Mpeera Ntayi ◽  
Charles Akol Malinga
Keyword(s):  
Social Capital ◽  
Research Design ◽  
Financial Intermediation ◽  
Financial Inclusion ◽  
Cross Sectional ◽  
Content Type ◽  
Mediating Role ◽  
The Poor ◽  
The Relationship

Purpose The purpose of this paper is to establish the mediating role of social capital in the relationship between financial intermediation and financial inclusion in rural Uganda. Design/methodology/approach The current study used cross-sectional research design and a semi-structured questionnaire was used to collect data for this study. The study applied structural equation modeling through bootstrap approach in AMOS to establish the mediating role of social capital in the relationship between financial intermediation and financial inclusion. Findings The results indicated that social capital significantly mediates the relationship between financial intermediation and financial inclusion in rural Uganda. Therefore, it can be deduced that social capital among the poor play an important role in promoting financial intermediation for improved financial inclusion in rural Uganda. Research limitations/implications Although the sample was large, it may not be generalized to other segments of the population. Data were collected from only poor households located in rural Uganda. Besides, the study was cross-sectional, thus, limiting efforts in investigating certain characteristics of the sample over time. Perhaps future studies could adopt the use of longitudinal research design. Practical implications Financial institutions such as banks should rely on social capital as a substitute for physical collateral in order to promote financial inclusion, especially among the poor in rural Uganda. Originality/value This study provides empirical evidence on phenomenon not studied in rural areas in Sub-Saharan Africa where the poor use social capital embedded in customs and norms for doing business. The results highlight the importance of social capital in mediating the relationship between financial intermediation and financial inclusion of the poor in rural Uganda.

The feeding value of normal and brown midrib-3 maize silage

1986 ◽  
Vol 106 (1) ◽  
pp. 31-35 ◽  
Author(s):  
R. F. Weller ◽  
R. H. Phipps
Keyword(s):  
Dry Matter ◽  
Live Weight ◽  
Normal Diet ◽  
Dry Matter Intake ◽  
Brown Midrib ◽  
Maize Silage ◽  
Lactating Cows ◽  
Acid Detergent Fibre ◽  
Feeding Value

SUMMARYNormal and brown midrib-3 (bm3) maize silages were fed to sheep, lactating cows and dairy calves to determine the effect of the bm3 gene on in vivo digestibility, dry-matter intake and animal performance.In two trials wether sheep were fed either normal or bm3 maize silage at maintenance level. In the first experiment the bm3 gene significantly increased the digestibility of the organic matter(OM), cell wall constituents (CWC), acid-detergent fibre (ADF), cellulose and hemicellulose from 76·9, 74·7, 67·3, 74·2 and 79·5% to 79·6, 79·2, 75·8, 80·8 and 81·5%. In the second experiment the gene increased the digestibility of the OM, CWC, ADF and cellulose from 65·9, 44·7, 28·5 and 38·7% to 701, 59·3, 560 and 66·1, 39·1,32·8, 40·4 and 45·5% to 68·1, 51·9, 53·7, 58·0 and 49·2%. The digestibility of the protein was similar for both diets.In a feeding trial 6-month-old calves were fed either normal or bm3 silage ad libitum together with 1·6 kg D.M. of a protein supplement. The dry-matter intake of the two silages was similar; however, the daily live-weight gain of 0·92 kg for calves fed the bm3 diet was significantly higher than the 0·83 kg for calves fed the normal diet.

Effects of urea and saccharose on intake and digestion of a Digitaria decumbens hay by black belly sheep

1999 ◽  
Vol 69 (2) ◽  
pp. 403-410 ◽  
Author(s):  
H. Archimède ◽  
G. Aumont ◽  
G. Saminadin| ◽  
E. Deprès ◽  
P. Despois ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Volatile Fatty Acids ◽  
Nitrogen Availability ◽  
Latin Square ◽  
Live Weight ◽  
Ruminal Bacteria ◽  
Digitaria Decumbens ◽  
Acid Detergent Fibre ◽  
Kinetics Of

AbstractEffects of incorporation of urea and saccharose in diets, on intake and digestion by sheep of a 35-day-old pangola (Digitaria decumbens) hay, have been studied according to a 4 × 4 Latin-square design. Sixteen rams were given four diets: hay (C); hay plus urea (U, 23 g/kg hay); hay plus saccharose (S, 60 g/kg hay), hay plus urea and saccharose (SU). Acid-detergent fibre and crude protein (CP) content of the roughage were 395 and 78 g/kg dry matter (DM) respectively. Intake of hay (g DM per kg live weight0.75), supplemented with urea and sugar (42⋅9), was lower (F < 0.05) than with other diets (47.2, s.e. 1.6). The organic matter (OM) total tract and ruminal digestibility of the diet C, S, U and SU were 0.622, 0.590, 0.615 and 0.587 (s.e. 0.007); 0.361, 0.380, 0.378 and 0.345 (s.e. 0.015) respectively. Effective degradation and nylon bag kinetics of DM degradation were higher with U and SU compared with S or C. Few differences were observed between diets for ruminal concentration of volatile fatty acids. The ruminal ammonia concentrations were higher (P < 0.05) for the diets with urea than without urea (78 v. 215 mg/l). The efficiencies of the microbial synthesis (g nitrogen per kg OM fermented in the rumen) were, 23.6, 22.4, 24.9 and 29.3 (s.e. 1.7) for the diets C, U, S and SU respectively.Even though additional urea increased nitrogen availability for ruminal bacteria, urea supplementation did not affect significantly intake or digestion of the pangola hay of medium CP content used in this experiment.

Sign in / Sign up

Export Citation Format

Share Document