scholarly journals Non-genetic effects on growth characteristics of Brahman cattle

2015 ◽  
pp. 4427-4435 ◽  
Author(s):  
Nicacia Hernández-Hernández ◽  
Juan Martínez-González ◽  
Gaspar Parra-racamonte ◽  
Martín Ibarra-Hinojosa ◽  
Florencio Briones-Encinia ◽  
...  

Objective. To determine how some non-genetic factors influence weights at birth (BW), weaning (WW) and yearling (YW) of Brahman calves. Materials and methods. Data corresponding to 58257, 57045 and 40364 for BW, WW and YW, respectively, were analyzed. The models included the effects of year and season of birth and sex, and were considered simple interactions. Results. All effects were significant (p<0.05) for BW, WW and YW. Only the season of birth didn’t have a significant effect (p>0.05) on WW. The average general BW, WW and YW were 32±3.2, 188±37.7 and 291±56.8 kg, respectively. Variables evaluated that take into account the year of birth show a trend to increase weight each year. In relation to the birth season on BW and YW, it was observed that calves born during the rainy season were heavier than those born during the dry season. Similarly, male calves were heavier than females at birth, weaning and one year of age. The effects of the analyzed interactions were significant (p<0.05) for the three variables, except for the season of birth per sex interaction, which did not have a significant effect (p>0.05) for BW and WW. Conclusions. The studied non-genetic factors were important and should be taken into account in management strategies when striving to increase the efficiency of the productive system. Key words: Zebu, birth weight, weaning weight, year weight. (Source: AIMS)

2014 ◽  
Vol 2 (1) ◽  
pp. 10-15
Author(s):  
Intan Sofienaz Ahmad Fuad ◽  
Md. Ruhul Amin ◽  
Nor Dini Rusli

Birth weight records of 738 Kedah Kelantan (KK) calves and 30 records on their 3 and 6 months body weight were obtained from Pusat Ternakan Haiwan Pantai Timur (PTHPT), Tanah Merah, Kelantan during the period of 2010- 2012. Data for this study were collected to identify non-genetic factors that affect birth weight and to observe growth performance of KK calves. The non- genetic factors that encompassed in this study were sex of calves, year of birth, season of birth and parity of dam. Growth performance was divided into two periods which were ADG 1 (Average Daily Gain) (birth to 3 month) and ADG 2 (3 to 6 month).The study revealed that effect of sex of calves and year of birth were highly significant (p<0.01) on birth weight of KK calves. Birth weight of male and female calves averaged at 14.27 kg and 13.50±0.058 kg respectively. Effect of season of birth and parity of dam were insignificant (p>0.05) on birth weight of KK calves. Growth performance of KK calves was found to be 338.148±15.565 g/day and 247.407±45.254 g/day for ADG 1 (birth to 3 month) and ADG 2 (3 to 6 month) respectively. Little but significant improvement in birth weight of calves over the years might be partly due to genetic selection of breeding bulls.


2012 ◽  
Vol 28 (2) ◽  
pp. 275-282 ◽  
Author(s):  
V. Caro-Petrovic ◽  
Z. Ilic ◽  
D. Ruzic-Muslic ◽  
M.P. Petrovic ◽  
M.M. Petrovic ◽  
...  

Research was conducted on animals of Balkan goat breed. The impact of environmental factors on the weight of kids was analyzed, and also the value of genetic parameters of growth traits of kids to weaning had been examined. The body weight of kids varied depending on the year from 2.27?0.09 kg to 2.43?0.08 kg at birth and 10.81?0.58 kg to 11.13?0.51 kg at weaning. Variations depending on the season, ranged from 2.24?0.09 kg to 2.51?0.05 kg. Sex also had an impact because the male kids had higher weight of 0.12 kg at birth and 0.20 kg at weaning. All differences caused by environmental factors were statistically significant (P<0.01). Single born kids in comparison with twin born kids had higher birth weight by 0.22 kg at birth and 0.37 kg in weaning. The differences were statistically significant (P<0.01). It is a known fact that the increase in litter size influences decrease in body weight of kids. We also found that the weight at birth is associated with body weight at weaning. Heritability for growth traits observed moving in the range of low values from 0.102 ? 0.039 to 0.153 ? 0.041. Repeatability of the observed traits varied from low to medium values in the interval from 0.118 ? 0.030 to 0.528 ? 0025.


1974 ◽  
Vol 18 (3) ◽  
pp. 231-236 ◽  
Author(s):  
M. B. Willis ◽  
A. Wilson

SUMMARYBirth weights of 568 Santa Gertrudis calves by 15 sires out of 111 different dams over a 14-year period were obtained from a herd in Cuba. Year of birth, season of birth, sex of calf, sire and dam all had highly significant influences upon birth weight but there was no effect of dam age or parity. Calf inbreeding ranged from 0 to 25% and led to a decrease of 012 kg in weight for each 1% increase in inbreeding. Calves surviving to weaning or dying between birth and weaning were of similar mean weight. Calves dying at birth were some 4·53 kg above the overall average of 38·59 kg. Sire effects covered a range of some 9·85 kg in birth weight. Heritability of birth weight estimated from an intra-class correlation between paternal half-sib groups was 0·67. Repeatability estimates were of the order of 0·22 from intra-class correlation and 0-24 on the basis of regression of later on earlier records. The overall least squares mean weight of 38-59 kg was several kg higher than previous estimates in the literature.


1976 ◽  
Vol 87 (2) ◽  
pp. 269-276 ◽  
Author(s):  
H. Harricharan ◽  
P. Mahadevan ◽  
B. G. F. Springer

SUMMARYData collected over a period of 11 years at the Ebini Livestock Station in the intermediate savannahs of Guyana were analysed to determine the effect of breed or cross, sire, sex, year and season of birth of calf, and age and length of calving interval of the dam on weights at birth and at 4, 8 and 12 months of age, in Santa Gertrudis, Sahiwal and Brahman cattle. The heritability of body weights at the different ages was estimated.


2017 ◽  
Vol 19 (2) ◽  
pp. 95
Author(s):  
Hetriana Leksananingsih ◽  
Slamet Iskandar ◽  
Tri Siswati

Background: Riskesdas in 2013 showed that Yogyakarta (DIY) had a prevalence of stunted new kid in school is less than the national average, which is 14.9% (MOH, 2013). Stunted or short, is a linear growth retardation has been widely used as an indicator to measure the nutritional status of individuals and community groups. Stunted can be influenced by several factors: birth weight, birth length match and genetic factors. Objective: To determine the weight, length of low birth weight and genetic factors as predictors of the occurrence of stunted on elementary school children. Methods: The study was a case control analytic. Research sites in SD Muhammadiyah Ngijon 1 Subdistrict Moyudan. The study was conducted in May and June 2015. The subjects were school children grade 1 to grade 5 the number of cases as many as 47 children and 94 control children. With the inclusion criteria of research subjects willing to become respondents, was present at the time of the study, they have a father and mother, and exclusion criteria have no data BB and PB birth, can not stand upright. The research variables are BBL, PBL, genetic factors and TB / U at this time. Data were analyzed by chi-square test and Odd Ratio (OR) calculation. Results: In case group as much as 91.5% of normal birth weight and length of 80.9% of normal birth weight, most of the height of a normal mother and father as many as 85.1%. In the control group as much as 78.7% of normal birth weight and 61.7% were born normal body length, height mostly normal mom and dad that 96.7% of women and 90.4% normal normal father. Statistical test result is no significant correlation between height mothers with stunted incidence in school children, and the results of chi-square test P = 0.026 with value Odd Ratio (OR) of 3.9 and a range of values from 1.091 to 14.214 Cl95%. Conclusion: High maternal body of mothers can be used as predictors of the occurrence of stunted school children and mothers with stunted nutritional status have 3.9 times the risk of having children with stunted nutritional status.


Author(s):  
N Fetherstone ◽  
N McHugh ◽  
T M Boland ◽  
F M McGovern

Abstract The objective of this study was to investigate the impact of the ewe’s maternal genetic merit and country of origin (New Zealand or Ireland) on ewe reproductive, lambing and productivity traits. The study was performed over a four year period (2016 to 2019) and consisted of three genetic groups: high maternal genetic merit New Zealand (NZ), high maternal genetic merit Irish (High Irish) and low maternal genetic merit Irish (Low Irish) ewes. Each group contained 30 Suffolk and 30 Texel ewes, selected based on the respective national maternal genetic indexes; i.e. either the New Zealand Maternal Worth (New Zealand group) or the €uro-star Replacement index (Irish groups). The impact of maternal genetic merit on reproductive traits such as litter size; lambing traits such as gestation length, birth weight, lambing difficulty, mothering ability, and productivity traits such as the number of lambs born and weaned were analyzed using linear mixed models. For binary traits, the impact of maternal genetic merit on reproductive traits such as conception to first AI service; lambing traits such as dystocia, perinatal lamb mortality and productivity traits such as ewe survival were analyzed using logistic regression. New Zealand ewes outperformed Low Irish ewes for conception to first AI (P&lt;0.05) and litter size (P=0.05). Irish ewes were more likely to suffer from dystocia (6.84 (High Irish) and 8.25 (Low Irish) times) compared to NZ ewes (P&lt;0.001); birth weight and perinatal mortality did not differ between groups (P&gt;0.05). Lambs born from NZ ewes were 4.67 (95% CI: 1.89 to 11.55; P&lt;0.001) and 6.54 (95% CI: 2.56 to 16.71; P&lt;0.001) times more likely to stand up and suckle unassisted relative to lambs born from High or Low Irish ewes, respectively. New Zealand and High Irish ewes had a greater number of lambs born and weaned throughout the duration of the study compared to their Low Irish counterparts (P&lt;0.001). New Zealand ewes tended to be more likely to survive from one year to the next compared to Low Irish ewes (P=0.07). Irish ewes of high maternal genetic merit outperformed their Low counterparts in total number of lambs born and weaned per ewe, but performance did not differ across other traits investigated. This highlights the importance of continuous development of the Irish maternal sheep index to ensure favourable improvements in reproductive, lambing and productivity traits at farm level. Overall, results demonstrate the suitability of NZ genetics in an Irish production system.


2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Gina Agarwal ◽  
Janusz Kaczorowski ◽  
Steve Hanna

Objective. Diabetes care is an important part of family practice. Previous work indicates that diabetes management is variable. This study aimed to examine diabetes care according to best practices in one part of Ontario. Design and Participants. A retrospective chart audit of 96 charts from 18 physicians was conducted to examine charts regarding diabetes care during a one-year period. Setting. Grimsby, Ontario. Main Outcome Measures. Glycemic screening, control and management strategies, documentation and counselling for lifestyle habits, prevalence of comorbidities, screening for hypertension, hyperlipidemia, and use of appropriate recommended preventive medications in the charts were examined. Results. Mean A1c was within target (less than or equal to 7.00) in 76% of patients (ICC = −0.02), at least 4 readings per annum were taken in 75% of patients (ICC = 0.006). Nearly 2/3 of patients had been counselled about diet, more than 1/2 on exercise, and nearly all (90%) were on medication. Nearly all patients had a documented blood pressure reading and lipid profile. Over half (60%) had a record of their weight and/or BMI. Conclusion. Although room for improvement exists, diabetes targets were mainly reached according to recognized best practices, in keeping with international data on attainment of diabetes targets.


2022 ◽  
Vol 7 (2) ◽  
pp. 89-98
Author(s):  
Fatemeh Mirzaie ◽  
Khadije Rezaie Keikhaie ◽  
Mahin Badakhsh ◽  
Bahareh Khajehpourbahareh ◽  
Samira Ghofrani ◽  
...  

1996 ◽  
Vol 168 (S30) ◽  
pp. 68-75 ◽  
Author(s):  
Kenneth S. Kendler

In both clinical and epidemiological samples, major depression (MD) and generalised anxiety disorder (GAD) display substantial comorbidity. In a prior analysis of lifetime MD and GAD in female twins, the same genetic factors were shown to influence the liability to MD and to GAD. A follow-up interview in the same twin cohort examined one-year prevalence for MD and GAD (diagnosed using a one-month minimum duration of illness). Bivariate twin models were fitted using the program Mx. High levels of comorbidity were observed between MD and GAD. The best-fitting twin models, when GAD was diagnosed with or without a diagnostic hierarchy, found a genetic correlation of unity between the two disorders. The correlation in environmental risk factors was +0.70 when GAD was diagnosed non-hierarchically, but zero when hierarchical diagnoses were used. Our findings provide further support for the hypothesis that in women, MD and GAD are the result of the same genetic factors. Environmental risk factors that predispose to ‘pure’ GAD episodes may be relatively distinct from those that increase risk for MD.


2018 ◽  
Vol 5 (2) ◽  
pp. 508 ◽  
Author(s):  
Prathiba N. Doddabasappa ◽  
N. S. Mahantshetti ◽  
Mahesh Kamate ◽  
Adarsh E.

Background: Low birth weight (LBW) is one of the risk factor for neurodevelopmental delay. The present study was undertaken to assess the role of the Kangaroo Mother Care (KMC) in the neurodevelopmental outcome of low birth weight babies. Methods: The present study was undertaken at Department of Paediatrics, Jawarharlal Medical college, Belgaum during the period from January 2009 to October 2010. The study includes 80 stable LBW babies were randomized into 40 in the KMC group and 40 in convention method of care group. 36 babies in the KMC group and 33 babies in the CMC group completed the study. The Neurodevelopmental outcome was assessed by the Amiel Tison test at three, six, nine and twelfth months of age. This was compared with BSID test, at one year.Results: The neurosensory examination and passive muscle tone (PMT) were found to be abnormal. Majority of the babies in both groups has a normal neurosensory and PMT development at one year. Statistically significant to muscle tone deficit was observed in the CMC babies at six months and nine months (p = 0.005 and p = 0.013). With respect to BSID, 16 and 29 KMC babies had a normal Psychomotor Development Index (PDI) and Motor Development Index (MDI) scores when compared to 8 and 18 CMC babies (p = 0.003 and p = 0.057 respectively). Number of babies with significant delay was observed to be higher in the CMC group being 11 versus 1 for PDI scores and 4 versus 1 for MDI scores.Conclusions: The present study shows that KMC has a beneficial effect on the neurodevelopmental outcome of low birth weight babies and BSID II is a better test to detect the psychomotor and mental developmental delay when compared to the Amiel Tison test.


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