Effect of Age and Season on the Seminal Traits of Pure HF Bulls Under Tropical Condition

2020 ◽  
Author(s):  
S H Sontakke ◽  
V H Shende ◽  
Ajeet Singh ◽  
J R Khadse ◽  
V V Potdar ◽  
...  
Keyword(s):  
Age Groups ◽  
Winter Season ◽  
Summer Season ◽  
Age Group ◽  
Tropical Condition ◽  
Standard Procedures ◽  
Group 6 ◽  
Significant Change ◽  
Effect Of Age ◽  
Intensive System

The study was conducted to assess the effect of age and season on seminal traits of pure HF bulls under tropical condition. A total of 30 HF bulls of age group up to 3, 4-5, 6-7, 8 and above 8 years were selected and divided into 3 seasons viz rainy, summer and winter. The breeding bulls were kept under intensive system of rearing as per MSP guidelines of India. Semen was collected, evaluated and data analyzed by using standard procedures. The overall production and all the seminal traits viz volume, initial motility and post thaw motility was found to be better in summer season as compare to rainy and winter season. However, there was no significant change in concentration due to season. Among all the age groups, 8 years and above were found to produce highest volume, post thaw motility and eventually more production. Highest percentage of initial motility was recorded among the youngest group of bulls and concentration was significantly (plessthan0.01) high in the age group 6-7years followed by 8 and above 8 years of age. The study revealed that age and season have highly significant (plessthan0.01) effect on all the seminal traits and production.

scholarly journals Effect of age at slaughter on carcass characteristics and carcass composition in lambs of mountain Greek breeds

2011 ◽  
Vol 51 (No. 7) ◽  
pp. 311-317 ◽  
Author(s):  
B. Skapetas ◽  
E. Sinapis ◽  
J. Hatziminaouglou ◽  
A. Karalazos ◽  
J. Katanos
Keyword(s):  
Subcutaneous Fat ◽  
Age Groups ◽  
Carcass Characteristics ◽  
Carcass Composition ◽  
Age Group ◽  
Negative Effects ◽  
Slaughter Age ◽  
Total Fat ◽  
Effect Of Age

Forty male lambs of the mountain Greek breed were used to evaluate the effect of age at slaughter on carcass characteristics and composition. The slaughter of lambs was carried out at the age of 30, 45, 60, 75 and 90 days. The slaughter procedure, carcass dissection and carcass composition were realized according to the standard method of CIHEAM-AGRIMED programme. The results of this work showed that the lambs of different age groups did not differ in dressing percentage significantly. The proportion of muscles showed a tendency of increase with the increasing slaughter age but the differences were not significant. The proportion of total fat in carcass increased with the increasing slaughter age from 20.84 to 23.59% for the age group of 30 and 90 days, respectively (P < 0.05). On the contrary, as the age at slaughter increased, the proportion of bones decreased (P < 0.05). Subcutaneous, intermuscular, perinephric and pelvic fats increased with the slaughter age, but only the subcutaneous fat was influenced significantly (P < 0.05). Among the different commercial cuts proportions of long leg, first 5 ribs and shoulder decreased, while those of last 8 ribs-loin and breast-flank increased (P < 0.05). The overall results suggest that the slaughter age of lambs of the mountain Greek breed should be increased from the present ~45 days to more advanced age of 75 or 90 days in order to improve the farmers’ profits without serious negative effects on the quality of carcasses or meat of lambs.    

Learned Helplessness in Physical Education: A Developmental Study of Causal Attributions and Task Persistence

1994 ◽  
Vol 13 (2) ◽  
pp. 108-122 ◽  
Author(s):  
Thomas J. Martinek ◽  
Joseph B. Griffith
Keyword(s):  
Learned Helplessness ◽  
Task Difficulty ◽  
Age Groups ◽  
Developmental Study ◽  
Age Group ◽  
Task Persistence ◽  
Behavioral Measures ◽  
Effect Of Age ◽  
Two Age Groups ◽  
And Task

The purpose of this study was to describe the effect of age on specific psychological and behavioral measures of learned-helpless and mastery-oriented students. The study consisted of two age groups, younger and older, of learned-helplessness and mastery-oriented students. Within each age group, learned-helpless and mastery-oriented students were compared in terms of attributional profiles and levels of task persistence during instruction. Students were asked to view videotapes of their performances, to describe how they thought they did on each task, and to give reasons for their performance. Responses were classified into four attributional categories: (a) ability, (b) effort, (c) task difficulty, and (d) environment or luck. Persistence was also determined by looking at the number of times students would attempt a task. Attributional profiles and task persistence associated with the leamed-helpless condition was more prevalent with the older group than with the younger group.

scholarly journals Rotaviral diarrhoea in kids of Black Bengal goats in Mymensingh

1970 ◽  
pp. 59-62 ◽  
Author(s):  
BK Dey ◽  
MS Ahmed ◽  
MU Ahmed
Keyword(s):  
Infection Rate ◽  
Gel Electrophoresis ◽  
Winter Season ◽  
Electrophoretic Analysis ◽  
Summer Season ◽  
Female Group ◽  
Age Group ◽  
Marked Variation ◽  
Male And Female ◽  
Rotavirus Infection

An epidemiological study on rotavirus infection was carried out by examining 484 faecal specimens of kids of Black Bengal goats using RNA polycrylamide-gel-electrophoresis and silver staining (PAGE-ss) technique. Goat rotavirus was detected in 8.68% (42/484) diarrhoeic faecal specimens. The highest rate of rotavirus infection in goat kids was found in the month of January (13.95%) and the lowest in August (5.26%). The rate of rotavirus infection also the highest in winter season (11.80%) and the lowest in summer season (7.10%). The kids of 7 days to 1-month age group were most frequently found associated with rotavirus infection 13.63% (12/95), but very young kids which were below 7 days old, were found negative for rotavirus while gradual decreasing infection rate was found with the advancement of age. There was no marked variation in rotavirus infection rate between male and female group of kids. An electrophoretic analysis of rotaviral RNA revealed that kids were infected with rotavirus having only long RNA electropherotypes. The antigenic studies with reference to subgroup and serotypes with specificity and its zoonotic potentials need to be studied further. Key words: Rotaviral diarrhoea, kids, Black Bengal goats DOI = 10.3329/bjvm.v5i1.1312 Bangl. J. Vet. Med. (2007). 5 (1 & 2): 59-62

scholarly journals Trends in winter excess mortality in Mexico 1991 - 2008

2015 ◽  
Author(s):  
Omar González-Santiago ◽  
Evangelina Ramirez-Lara ◽  
Sandra L. Gracia-Vásquez ◽  
Isaias Balderas-Rentería
Keyword(s):  
General Population ◽  
Excess Mortality ◽  
Age Groups ◽  
Winter Season ◽  
Age Group ◽  
Old People ◽  
Mediterranean Countries ◽  
All Cause Mortality ◽  
Main Factors ◽  
Low Levels

Objective: Analyze the mortality by all causes in México during the Winter season. Methods: We extracted and tabulated data on monthly all-cause mortality in the general population from 1991 to 2008 from database INEGI. Coefficients of seasonal variation in mortality were calculated. Results: An increase of 15 % in mortality for general population during Winter was observed during the studied period. The more susceptible age groups were old people and children with an increase of winter deaths of 19 % and 11 % respectively. Months with low levels of mortality were April, October and September for children, adolescents and old people respectively. Conclusions: In Mexico winter months shown the highest levels of mortality. The increase in mortality is similar to some Mediterranean countries. More susceptible age groups correspond to child and old people. Months with low levels of mortality are different for each age group. In México it is necessary identify the main factors that contribute to low mortality among different months according age groups.

scholarly journals A CROSS-SECTIONAL STUDY FOR MYCOPLASMA GALLISEPTICUM ANTIBODIES IN NON-VACCINATED COMMERCIAL LAYER BIRDS IN KHULNA DISTRICT

2012 ◽  
Vol 8 (2) ◽  
pp. 93-96 ◽  
Author(s):  
MA Jalil ◽  
MT Islam
Keyword(s):  
Significant Relationship ◽  
Age Groups ◽  
Winter Season ◽  
Mycoplasma Gallisepticum ◽  
Cross Sectional Study ◽  
Age Group ◽  
Sectional Study ◽  
Cross Sectional ◽  
Sera Samples

A cross-sectional study was carried out on 96 commercial layer farms of six upazilas of Khulna district to know the seroprevalence of Mycoplasma gallisepticum (MG) infection during the period from August 2009 to July 2010. A total of 1268 sera samples were collected from randomly selected layer birds of different age groups and tested by serum plate agglutination (SPA) test by using commercial MG antigen (Nobilis® MG, Intervet International) to detect the presence of antibodies against MG. The overall prevalence of MG infection was recorded as 67.4%. Age-wise analysis revealed that there was significant relationship (p<0.001) between MG infection and age of birds. The highest prevalence of MG infection was 71.2% in 21-56 weeks age group followed by 66.8% in 8-20 weeks age group. There was significant (p<0.001) variation in the seroprevalence in terms of areas of study (upazilas). Significant (p<0.001) effect of seasons in the seroprevalence of MG infection in layer birds was observed in the present study. The prevalence of MG infection was the highest (75.6%) in winter season followed by summer (66.3%) and rainy (60.8%) seasons. The seroprevalence of MG infection was higher in most of the large flocks and lower in small flocks with some exceptions. It is evident from the present study that above 50% layer birds are infected with MG organism. Therefore, it may be suggested that the layer farms should be routinely checked to monitor MG infection and the reactor birds should be culled since MG organism has the potential to transmit vertically.DOI = http://dx.doi.org/10.3329/bjvm.v8i2.9620Bangl. J. Vet. Med. (2010). 8 (2) : 93-96 

scholarly journals Trends in winter excess mortality in Mexico 1991 - 2008

2015 ◽  
Author(s):  
Omar González-Santiago ◽  
Evangelina Ramirez-Lara ◽  
Sandra L. Gracia-Vásquez ◽  
Isaias Balderas-Rentería
Keyword(s):  
General Population ◽  
Excess Mortality ◽  
Age Groups ◽  
Winter Season ◽  
Age Group ◽  
Old People ◽  
Mediterranean Countries ◽  
All Cause Mortality ◽  
Main Factors ◽  
Low Levels

Objective: Analyze the mortality by all causes in México during the Winter season. Methods: We extracted and tabulated data on monthly all-cause mortality in the general population from 1991 to 2008 from database INEGI. Coefficients of seasonal variation in mortality were calculated. Results: An increase of 15 % in mortality for general population during Winter was observed during the studied period. The more susceptible age groups were old people and children with an increase of winter deaths of 19 % and 11 % respectively. Months with low levels of mortality were April, October and September for children, adolescents and old people respectively. Conclusions: In Mexico winter months shown the highest levels of mortality. The increase in mortality is similar to some Mediterranean countries. More susceptible age groups correspond to child and old people. Months with low levels of mortality are different for each age group. In México it is necessary identify the main factors that contribute to low mortality among different months according age groups.

Children’s Control/Display Stereotypes

2018 ◽  
Vol 60 (4) ◽  
pp. 538-555 ◽  
Author(s):  
Errol R. Hoffmann ◽  
Alan H. S. Chan ◽  
Judy P. C. Tai
Keyword(s):  
Experimental Data ◽  
Age Groups ◽  
Three Dimensional ◽  
Age Group ◽  
Two Dimensional ◽  
Complex Tasks ◽  
Different Ages ◽  
Design For Children ◽  
The Relationship ◽  
Effect Of Age

Objective The aim of this study was to determine control/display stereotypes for children of a range of ages and development of these stereotypes with age. Background Little is known about control/display stereotypes for children of different ages and the way in which these stereotypes develop with age. This study is part of a program to determine the need to design differentially for these age groups. Method We tested four groups of children with various tasks (age groups 5 to 7, 8 to 10, 11 to 13, 14 to 16), with about 30 in each group. Examples of common tasks were opening a bottle, turning on taps, and allocating numbers to keypads. More complex tasks involved rotating a control to move a display in a requested direction. Results Tasks with which different age groups were familiar showed no effect of age group. Different control/display arrangements generally showed an increase in stereotype strength with age, with dependence on the form of the control/display arrangement. Two-dimensional arrangements, with the control on the same plane as the display, had higher stereotype strength than three-dimensional arrangements for all age groups, suggesting an effect of familiarity with controls and displays with increasing age. Conclusion Children’s control/display stereotypes do not differ greatly from those of adults, and hence, design for children older than 5 years of age, for control/display stereotypes, can be the same as that for adult populations. Application When designing devices for children, the relationship between controls and displays can be as for adult populations, for which there are considerable experimental data.

scholarly journals The Association between Birth Weight and Gestational Age and Asthma in 6-7- and 13-14-Year-Old Children

Scientifica ◽  
2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Zamani Raheleh ◽  
Alikhani Ahmad ◽  
Heydarzadeh Abtin ◽  
Zare Roghaye ◽  
Hashemain Sara ◽  
...  
Keyword(s):  
Birth Weight ◽  
Severe Asthma ◽  
Gestational Age ◽  
Lower Risk ◽  
Age Groups ◽  
Age Group ◽  
Group 13 ◽  
Increased Risk ◽  
Group 6

Background. Previous studies that assessed the role of birth weight and gestational age in the risk of asthma have been conflicting.Objectives. To examine the association between birth weight and gestational age and symptoms of asthma.Patients and Methods. Subjects were 6656 school children of ages 6-7 and 13-14 years from urban districts of Mazandaran, Iran. ISAAC questionnaires were used.Results. There was an increased risk of “wheeze ever” in both age groups with birth weight under 2.5 kg and in all subgroups of low birth weight (LBW). Birth weight more than 3.5 kg was associated with lower risk of “severe asthma” in age group 6-7 years. With respect to gestational age, higher risks of “wheeze ever,” “asthma ever,” and “night cough in the past 12 months” were found in age group 13-14 years born before 37 weeks and the risk of “severe asthma” was higher in younger group (6-7 years). A lower risk of "asthma ever" was also found in 6-7-year-old children and 13-14-year-old girls who were born after 40 weeks.Conclusions. This study showed that there is a direct relation between “wheeze ever” and LBW and an inverse relation between risk of “severe asthma” and birth weight more than 3.5 kg.

Effect of age of cattle on digestion of whole wheat or oats fed with clover hay

1976 ◽  
Vol 16 (83) ◽  
pp. 795 ◽  
Author(s):  
CJ Kimberley
Keyword(s):  
Age Groups ◽  
Lower Proportion ◽  
Age Group ◽  
Whole Grain ◽  
Wheat Grain ◽  
Whole Wheat ◽  
Daily Diet ◽  
Equal Importance ◽  
Significant Difference ◽  
Effect Of Age

The digestibility of diets containing two-thirds oat or wheat grain and one-third hay was determined with steers either 6 or 24 months of age. The six steers of each age group were offered their daily diet in amounts equal to 1.5 per cent of liveweight; the weight of whole grain in the faeces and the digestibility of grain were measured. There was no significant difference in grain digestibility between calves and adult steers. For both age groups oats was more digestible than wheat (72 vs. 58, P < 0.05), due largely to the lower proportion of whole grain in the faeces (13 vs. 31, P < 0.05). The chemical composition of the voided grain was similar to that of the grain as fed. It was concluded that processing to improve digestibility of grains is of equal importance whether the grain is fed to calves or steers.

Structural Development of Narratives in Arabic: Task Complexity, Age, and Cultural Factors

2020 ◽  
Vol 51 (2) ◽  
pp. 405-415 ◽  
Author(s):  
Fauzia Abdalla ◽  
Abdessattar Mahfoudhi ◽  
Shouq Alhudhainah
Keyword(s):  
Public Schools ◽  
Task Complexity ◽  
Age Groups ◽  
Structural Development ◽  
Age Group ◽  
Cross Sectional ◽  
Narrative Skills ◽  
Arabic Speaking ◽  
Effect Of Age ◽  
And Task

Purpose This study examines the effect of age and task complexity on the macrostructure of story production in preschool- and school-age Kuwaiti Arabic–speaking children. It also compares the children's production of core and complementary macrostructure story elements. Method A descriptive, cross-sectional research design was used to explore the participants' narrative skills. A total of 122 monolingual speakers of Kuwaiti Arabic (97 children and 25 adults) participated in this study. The children aged 4;0 to 7;11 (years;months) were randomly recruited from public schools across Kuwait. There were 24 four-year-olds (Kindergarten 1), 23 five-year-olds (Kindergarten 2), 23 six-year-olds (Grade 1), and 27 seven-year-olds (Grade 2). A group of adults was also included to establish a benchmark. Storytelling was elicited from all the participants using two sets of sequential pictures from the Edmonton Narrative Norms Instrument: a one-episode story and a more complex three-episode story (Schneider et al., 2005). Across-group comparisons were conducted to explore the effect of age, story complexity, and type of macrostructure elements on story production. Results The findings revealed a progression by age in the development of story macrostructure, but there was no effect of task complexity. Within all age groups, the core macrostructure components were mastered before the complementary elements. Conclusions The results of this study confirmed that cross-linguistic narrative measures could be used in contexts that are culturally and linguistically different with minor adaptations. The piloting of two picture-based stories showed that the shorter one-episode version may be sufficient to evaluate the language development of this age group.

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