THE DISTRIBUTION OF CHLOROPHYLL IN RUMEN CONTENTS AND THE ONSET OF BLOAT IN CATTLE

1986 ◽  
Vol 66 (1) ◽  
pp. 97-102 ◽  
Author(s):  
W. MAJAK ◽  
J. W. HALL ◽  
R. E. HOWARTH
Keyword(s):  
Particulate Matter ◽  
Liquid Phase ◽  
Key Words ◽  
Rumen Fluid ◽  
Gas Production ◽  
Solid Phases ◽  
Relationship Of ◽  
The Relationship ◽  
Liquid And Solid Phases ◽  
Chlorophyll Concentrations

Chlorophyll levels in rumen contents from the dorsal and ventral sac were examined before alfalfa ingestion to determine the relationship of chloroplast particles to the onset of pasture bloat in cattle. Chlorophyll concentrations were significantly higher in cattle that subsequently bloated than in those that did not. The higher levels were observed in both the liquid and solid phases of rumen contents from cattle predisposed to bloat but the liquid phase showed a greater increase. Chlorophyll levels were uniformly distributed in the rumen with little or no difference between samples obtained from the ventral and dorsal sacs. In agreement with previous results, animals predisposed to bloat showed higher rates of gas production and greater buoyancy of particulate matter in prefeeding rumen fluid. The results suggest that chloroplast particles in the rumen have a slower rate of clearance in bloating animals than in nonbloating ones. Key words: Bloat, alfalfa, cattle, rumen, chlorophyll, chloroplast particles

THE RELATIONSHIP OF RUMEN CATIONS AND SOLUBLE PROTEIN WITH PREDISPOSITION OF CATTLE TO ALFALFA BLOAT

1988 ◽  
Vol 68 (2) ◽  
pp. 431-437 ◽  
Author(s):  
J. W. HALL ◽  
W. MAJAK ◽  
A. L. VAN RYSWYK ◽  
C. M. KALNIN ◽  
R. E. HOWARTH
Keyword(s):  
Key Words ◽  
Soluble Protein ◽  
Rumen Fluid ◽  
High Concentration ◽  
Protein Nitrogen ◽  
Colloidal Aggregation ◽  
Growing Seasons ◽  
Monovalent Ions ◽  
Relationship Of ◽  
The Relationship

Rumen-fistulated cattle were fed fresh alfalfa herbage daily during two growing seasons. Samples of rumen fluid were collected daily prior to feeding and the frothiness of the rumen fluid was assessed. Concentrations of soluble protein nitrogen in the rumen fluid were higher in animals that subsequently bloated than in those that did not (P < 0.01). There was no relation between soluble protein nitrogen and the occurrence of foam in the rumen prior to feeding. The concentrations of Na and K in the rumen fluid were negatively correlated. Bloat was associated with a low concentration of Na and a high concentration of K (P < 0.01). Concentrations of Ca and Mg were lower than those of the two monovalent ions but were also positively associated with bloat (P < 0.01). The high concentration of chlorophyll associated with a predisposition to bloat may be the result of a colloidal aggregation of chloroplast particles stabilized by cations. Key words: Pasture bloat, alfalfa, chlorophyll, ions, cattle

scholarly journals Characteristics of cows’ cicatricial metabolism of different linearity

2021 ◽  
Vol 213 (10) ◽  
pp. 75-80
Author(s):  
E. Razhina
Keyword(s):  
Statistical Data ◽  
Ph Value ◽  
Rumen Fluid ◽  
Point Of View ◽  
Ideal Line ◽  
Microsoft Office ◽  
Relationship Of ◽  
First Time ◽  
The Relationship ◽  
Veterinary Laboratory

Abstract. The aim of this work is to investigate the relationship between indicators of cicatricial digestion and linearity of cows. Methods. The research was carried out in the breeding enterprises of the Sverdlovsk region on the livestock of Ural-type cows. Cicatricial fluid was collected with an oropharyngeal rubber probe, and a wooden yaw was also used. Cicatricial content was assessed at the Chelyabinsk Interregional Veterinary Laboratory. The pH value was determined by the electrometric method, VFA – in the Markgam apparatus, ammonia – by the microdiffusion method. Ciliates – in Goryaev’s chamber and under a microscope, bacteria – under a microscope with the addition of sodium chloride solution. Statistical data processing was carried out in the Microsoft Office Excel 2010 program. Results. In terms of the number of ciliates and bacteria in the rumen fluid, the Montwick Chieftain cows, characterized by high productive qualities, had an advantage. In terms of pH and VFA, the Vis Back Ideal line was the best. There were no significant differences between the groups in terms of the amount of ammonia in the rumen. The best animals from the point of view of influence on cicatricial metabolism were the animals of the Vis Back Ideal and Montwick Chieftain lineage. Scientific novelty. Studies have shown that linearity is associated with cicatricial digestion in cows. The relationship of bull lines with indicators of cicatricial metabolism of cows has been determined for the first time. The food in the rumen is digested due to the action of bacteria, ciliates, and fungi. An environment has been created in the rumen for the active development of microflora. Bacteria are able to synthesize amino acids and vitamins. The proventriculus can contain up to 50 species of ciliates.

Aggressive behavior and its relationship to electronic games among kindergarten children

2021 ◽  
Vol 26 ◽  
pp. 701-735
Author(s):  
LUBNA KADOURY ◽  
Keyword(s):  
Academic Achievement ◽  
Aggressive Behavior ◽  
Key Words ◽  
Point Of View ◽  
Kindergarten Children ◽  
Validity And Reliability ◽  
Electronic Games ◽  
Relationship Of ◽  
The Relationship ◽  
Academic Year

The current research aims to identify: - 1- The level of the relationship between electronic games and the aggressive behavior of kindergarten children from the point of view of parents. 2- The significance of the differences in the views of parents about the relationship between electronic games and the aggressive behavior of kindergarten children. 3- The significance of the differences in the views of parents on the extent of the relationship of electronic games to the aggressive behavior of kindergarten children according to their academic achievement. The research sample included (140) children from Baghdad governorate for the academic year (2019-2020). To achieve the research objectives, the researcher adopted the scale of (Dr. Al-Sawalha, Al-Oweimer, Al-Alimat, 2015) after the validity and reliability was extracted, the resercher reached the following results - 1- There are statistically significant differences between the level of the relationship of electronic games and the aggressive behavior of kindergarten children from the point of view of parents. 2- There are no statistically significant differences in the parents ’views on the relationship of electronic games to the aggressive behavior of kindergarten children. 4- There are no statistically significant differences in the views of both parents regarding the extent of the relationship of electronic games with the aggressive behavior of kindergarten children according to their academic achievement. Key words: - Aggressive behavior، Electronic games

scholarly journals Utilization of Ficus benjamina by Birds at Urban Habitat in Depok

2018 ◽  
Vol 20 (1) ◽  
pp. 75
Author(s):  
Dimas Haryo Pradana ◽  
Ani Mardiastuti ◽  
Y Yasman
Keyword(s):  
Key Words ◽  
Natural Habitat ◽  
Urban Habitat ◽  
Urban Birds ◽  
Ficus Benjamina ◽  
Key Words Birds ◽  
Relationship Of ◽  
The Relationship

Most of the research about the relationship of birds and figs were conducted at natural habitat. We conducted a research about this relationship at urban habitat in Depok and specifically studied utilization of Ficus benjamina by birds as feeding and nesting tree.  The objective of our research was to describe the F. benjamina utilization by urban birds in Depok.  Scans sampling and nest counting were used during this study.  Our research shows that F. benjamina was used as feeding tree by most of birds which lives at urban habitat in Depok.  Our research also shows that some birds used this fig species as nesting tree.    Key Words : birds, Ficus benjamina, urban, Java

The Relationship of Incident Diabetes with Chronic Particulate Matter Exposures

Epidemiology ◽  
2009 ◽  
Vol 20 ◽  
pp. S58-S59
Author(s):  
Robin Puett ◽  
Jaime Hart ◽  
Angela Liese ◽  
Frank Hu ◽  
Joel Schwartz ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Incident Diabetes ◽  
Relationship Of ◽  
The Relationship

scholarly journals PLURALISME PRINSIPIIL DAN REFLEKSINYA TERHADAP PANCASILA

2018 ◽  
Vol 5 (2) ◽  
pp. 183-204
Author(s):  
Chias Yohanes Wuysang ◽  
Benyamin Intan
Keyword(s):  
Key Words ◽  
Reformed Theology ◽  
Structural Pluralism ◽  
Ethical Approach ◽  
Religion And State ◽  
Relationship Of ◽  
The Relationship

This article uses theological-ethical approach to focus on the presentation of the relationship of religion and state in the concept of principled pluralism and provides a reflection on the life of the nation and state in Indonesia which has Pancasila. The theological basis used as a reference is the Reformed theology of the Neo-Calvinism wing which was pioneered by Abraham Kuyper and forwarded by ideas from Kuyperians such as Gordon Spykman, James Skillen, Jonathan Chaplin. The author will argue that Pancasila is in harmony with principled pluralism. KEY WORDS: principled pluralism, structural pluralism, confessional pluralism, Pancasila.

scholarly journals Application of equilibrium phase diagrams for calculation of segregation kinetics during two-component melt cooling

2020 ◽  
Vol 63 (2) ◽  
pp. 129-134
Author(s):  
A. D. Drozin ◽  
E. Yu. Kurkina
Keyword(s):  
Liquid Phase ◽  
Equilibrium State ◽  
Cross Section ◽  
Diffusion Coefficients ◽  
Solid Phase ◽  
Equilibrium Phase ◽  
Minimum Size ◽  
Two Component ◽  
Solid Phases ◽  
Liquid And Solid Phases

According to the equilibrium state diagrams, when the melt is cooled to a certain temperature below liquidus, compositions of liquid and solid phases are uniquely determined by corresponding curves in the diagram. However, it does not happen in reality. For equilibrium (which the diagram describes), it is necessary that the melt is maintained indefinitely at each temperature, or thermal conductivity of liquid and solid phases, and the diffusion coefficients of their components, are infinitely large. We made an attempt to find out how these processes occur in reality. In this work, we consider the growth of individual crystal during cooling of a two-component melt. Mathematical model is constructed based on the following. 1. The melt area with volume corresponding to one grain, the periphery of which is cooled according to a certain law, is considered. 2. At the initial instant of time, a crystal nucleus of a certain minimum size is in the liquid. 3. At the surface of crystal, compositions of liquid and solid phases correspond to equilibrium state diagram at a given temperature on its surface. 4. Changes in temperature and composition in liquid and solid phases occur according to the laws of heat conduction and diffusion, respectively. As the melt gets cold and the crystal grows, the liquid phase is enriched in one component and depleted in another, the solid phase – on the contrary. Since the diffusion coefficients of the components in the solid phase are small, the composition of the crystal does not have time to completely equalize its cross section. The model proposed in the work allows us to study this phenomenon, to calculate for each cooling mode how the composition of the crystal will vary over its cross section. The calculations have shown that the temperature equalization occurs almost instantly, and composition of the liquid phase equalizes much slower. Equalization of the solid phase composition does not occur in the foreseeable time. The results of the work will help to improve technology of generation of alloys with an optimal structure.

scholarly journals Formation of Interfacial Reaction Layers in Al2O3/SS 430 Brazed Joints Using Cu-7Al-3.5Zr Alloys

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 990 ◽  
Author(s):  
Hoejun Heo ◽  
Hyeonim Joung ◽  
Keeyoung Jung ◽  
Chung-Yun Kang
Keyword(s):  
Liquid Phase ◽  
Interfacial Reaction ◽  
Eutectic Temperature ◽  
Liquid Phases ◽  
430 Stainless Steel ◽  
Brazed Joints ◽  
Solid Phases ◽  
Α Al2o3 ◽  
Kinetics Of ◽  
Liquid And Solid Phases

The formation of interfacial reaction layers was investigated in an α-Al2O3/430 stainless steel (SS430) joint brazed using a Cu-7Al-3.5Zr active brazing alloy. Brazing was conducted at above its eutectic temperature of 945 °C and below liquidus 1045 °C, where liquid and solid phases of the brazing alloys coexists. At 1000 °C, the liquid phase of the brazing alloy was wet onto the α-Al2O3 surface. Zr in the liquid phase reduced α-Al2O3 to form a continuous ZrO2 layer. As the dwell time increased, Zr in the liquid phases near α-Al2O3 interface was used up to thicken the reaction layers. The growth kinetics of the layer obeys the parabolic rate law with a rate constant of 9.25 × 10−6 cm·s−1/2. It was observed that a number of low yield strength Cu-rich particles were dispersed over the reaction layer, which can release the residual stress of the joint resulting in reduction of crack occurrence.

Liquid-phase denaturant gradient gel electrophoresis profiles of rumen bacteria from Brahman cross steers selected into two groups on the basis of post-weaning liveweight gain on low crude protein pasture

2012 ◽  
Vol 52 (7) ◽  
pp. 647 ◽  
Author(s):  
E. D. Martínez ◽  
K. E. Turnbull ◽  
S. P. Quigley ◽  
S. J. Streeter ◽  
A. Swain ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Gel Electrophoresis ◽  
Crude Protein ◽  
Rumen Fluid ◽  
Rumen Bacteria ◽  
Ruminal Ph ◽  
Gradient Gel Electrophoresis ◽  
Denaturant Gradient Gel Electrophoresis ◽  
The Relationship ◽  
Protein Diets

Two experiments were conducted to evaluate the relationship between rumen liquid-associated bacterial community structures and post-weaning liveweight gain (LWG) of Brahman crossbred steers. Bacterial diversity was assessed using denaturant gradient gel electrophoresis (DGGE). In Experiment 1, 16 steers were selected from a group of 100 steers by pairing steers with the same weaning weight, but different LWG 90 days after weaning (n = 8 highest growth, 0.21 ± 0.01 kg/day; and n = 8 lowest growth –0.07 ± 0.01 kg/day). Thereafter, steers were allocated to a 28-day pen study and fed Mitchell grass (Astrebla spp.) hay to examine DM intake and digestibility, rumen parameters and rumen microbial community in these two groups. Rumen fluid samples were taken by stomach tube 3 h after feeding on the last day of the pen phase. In Experiment 2, 12 pairs of weaned steers were selected from a group of 203 steers on the same basis as Experiment 1. The post-weaning LWG were 0.20 ± 0.03 and 0.02 ± 0.03 kg/day for the 12 highest and 12 lowest growth animals selected, respectively. Steers then grazed dry season Sabi grass (Urochloa mosambicensis) dominant pasture for 21 days, before rumen sampling 3 h after morning grazing by stomach tubing on the last day. In Experiment 1, there were no significant differences between the two groups in DM intake, digestibility, ruminal pH, total volatile fatty acid (VFA) concentration or the VFA proportion. In Experiments 1 and 2, rumen ammonia-N concentration was similar between LWG groups and there was no evidence of a relationship between liquid-phase DGGE profiles of rumen bacteria and high or low post-weaning LWG using multivariate analyses. Furthermore, the number of detected DGGE bands, the Shannon–Wiener and evenness indexes were not different between LWG groups. This DGGE analysis of the most abundant groups of rumen fluid-associated bacteria suggests that microbial populations were not related with the differences observed in post-weaning LWG within a group of weaners fed low crude protein diets.

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