A note on non-genetic factors affecting body weights of Bikaneri sheep (Magra strain)

1971 ◽  
Vol 13 (2) ◽  
pp. 349-351 ◽  
Author(s):  
S. C. Chopra ◽  
R. M. Acharya
Keyword(s):  
Least Squares ◽  
Genetic Factors ◽  
The Body ◽  
Factors Affecting ◽  
Body Weights

SUMMARYThe least squares analysis on birth, weaning, 6-month and yearling weights in Magra lambs showed that years of lambing, age and weight of dam at lambing and sex of lamb significantly affected all the body weights except the age of dam which did not significantly affect 6-month and yearling weights. Adjustment of these weights for significant effect will be necessary in obtaining estimates of genetic and phenotypic parameters.

Genetic and non-genetic factors affecting body weights in Marwari sheep

2015 ◽  
Vol 21 (1) ◽  
pp. 106 ◽  
Author(s):  
L.K. Nirban ◽  
R.K. Joshi ◽  
H.K. Narula ◽  
H. Singh ◽  
S. Bhakar
Keyword(s):  
Genetic Factors ◽  
Factors Affecting ◽  
Body Weights

scholarly journals Estimated variance components and breeding values for pre-weaning growth criteria in Romney sheep

2017 ◽  
Vol 21 (2) ◽  
pp. 73
Author(s):  
Eslam Faid-Allah ◽  
E. Ghoneim ◽  
A.H.M. Ibrahim
Keyword(s):  
New Zealand ◽  
Variance Components ◽  
Genetic Factors ◽  
Gene Marker ◽  
Breeding Values ◽  
Factors Affecting ◽  
Kleiber Ratio ◽  
Body Weights ◽  
Estimated Breeding Values ◽  
Positive Coefficients

<p class="abstrak2">This study was carried out to investigate variance components, direct heritability, maternal genetic parameters, estimated breeding values and factors affecting pre-weaning growth criteria of Romney sheep. Data were collected over the period from 2006 to 2012 with records of 4989 lambs descended from 76 rams and 2190 ewes of Romney sheep maintained at S. Island of New Zealand via Gene Marker Lab., Faculty of Agric. and Life Sci., Lincoln Univ., New Zealand. Results proved that genetic and non-genetic factors affecting studied criteria had significant effects (P&lt;0.05). Genetic and environmental estimates of live body weights at birth (LBW), weaning (LWW) and Kleiber ratio (KR) were 0.20±0.074, 0.15±0.042 and 0.14±0.052 for direct heritability (h<sup>2</sup>a±SE); 0.59±0.219, 0.41±0.023 and 0.08±0.002 for maternal heritability (h<sup>2</sup>m±SE); 0.11684, 2.6378 and 0.27565 for additive variances (σ<sup>2</sup>a), 0.34596, 7.1179 and 0.14532 for maternal variances (σ<sup>2</sup>m); and 0.002395, 10.1262 and 0.509339 for permanent environmental variances (σ<sup>2</sup>e), respectively. EBV’s of LBW, LWW and KR ranged from -0.555: 0.502, -1.554: 3.006 and -0.633: 0.242 direct, -0.863: 0.954, -4.942: 2.554 and -0.469: 0.179 maternal for rams, respectively; and -0.664: 0.830, -2.996: 4.586 and -1.651: 0.677 direct, 1.429: 1.142, -7.541: 4.920 and -1.223: 0.492 maternal for ewes, respectively. Results suggest the importance of considering the non-genetic factors in pre-weaning growth performance of lambs. Moderate heritability and positive coefficients of phenotypic and genetic correlation for studied criteria indicate to the possibility of improving them using traditional selection.</p>

scholarly journals The Body Mass Index (BMI) of Human Age and Gender Structure as the Main Cause of Cardiovascular and Nephrotic Diseases

2013 ◽  
Vol 12 (3) ◽  
pp. 256-262
Author(s):  
Sheqibe Beadini ◽  
Nexhbedin Beadini ◽  
Besa Dalipi ◽  
Gazmend Iseni ◽  
Hesat Aliu ◽  
...  
Keyword(s):  
Genetic Factors ◽  
Eating Habits ◽  
Medical Science ◽  
The Body ◽  
Physical Growth ◽  
Age And Gender ◽  
Factors Affecting ◽  
Potential Risk Factors ◽  
And Gender ◽  
The Impact

Background: Factors affecting the growth of the organism may be either endogenous, such as genetic factors like genetic heritage, or exogenous such as food, social and health status, physical activity, etc. A factor of great importance for human physical growth is BMI, a parameter defined as the ratio of human body weight and height. Aims:The purpose of this article is to determine the BMI in Macedonia’s population by analyzing age and gender, and finding the correlation of endogeneous and exogeneous factors and the BMI factor. All measurements were performed at the health facility. Surveys were also conducted for gathering information about gender, age, weight, height, eating habits, socioeconomic status, and education. Results: This clinical research studied 257 patients, 143 males and 114 females. Among other factors involved in this research are blood glucose, fat parameters and potential risk factors for cardiovascular and nephrotic diseases. Conclusions: After the discovery and identification of renal disease, the impact of BMI can be distinguished from pathological processes, such as irregular eating, various inflammations, and changes in the metabolism of vitamin D, etc. Bangladesh Journal of Medical Science Vol. 12 No. 03 July ’13 Page 256-262DOI: http://dx.doi.org/10.3329/bjms.v12i3.12618 

scholarly journals Genetic and non-genetic factors affecting the performance of West African Dwarf (WAD), Yankasa (YAN) and WAD X YAN lambs in the tropics

2021 ◽  
Vol 41 (2) ◽  
pp. 44-52
Author(s):  
O. O. Adewumi
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Rainy Season ◽  
Genetic Factors ◽  
West African ◽  
The Body ◽  
Genetic Group ◽  
Leg Length ◽  
Factors Affecting ◽  
West African Dwarf

Genetic and non-genetic factors affecting performance of sheep at the Teaching and Research farm of the Federal University of Technology, Akure, Ondo State, Nigeria were studied from 2005-2006. Genetic groups involved were 8 West African Dwarf sheep (WAD), 10 Yankasa (YAN) and 10 WAD X YAN (XBD). Data were analysed using General Linear Model of least squares analysis of variance to test the influence of genetic group, sex, season and age on weights and linear body measurements such as height at withers (HT), body length (BL), Neck length (NL), Neck circumference (NC), heart girth (HG), Foreleg length (FL), Hind leg length (HL), Face length (FA), Ear length (EA), Headwidth (HW), shoulder width (SW), tail length (TL) and Rump height (RH). Weight, HT, BL, HG, FL, HL, FL, EL, TL and RH were significantly affected by genetic group. Female lambs weighed 0.75kg more than the males (p<0.01). Season of birth had significant effect on WT (p<0.0001), HT (p<0.01), NL (p<0.001), FL (p<0.0001), HL (p<0.0.0001), FA (p<0.01), SW (p<0.01) and RL (p<0.05), the traits were superior in the rainy season. Age significantly affected all parameters considered. The WAD (0.53) and XBD (1.39kg) lambs were and heavier during the rainy season as compared to the dry season. Of the body dimensional traits, HG had the highest correlation coefficients with WT in WAD and YAN lambs estimated at 0.86 and 0.89 respectively, whereas HT was the most correlated trait with WT in XBD lambs. Height at withers and body length were the most important additional variables to heartgirth accounting for 87% prediction of body weight in WAD and YAN lambs, whereas, HT, BL, NC, HG, SW, TL and RH could account for up to 90% of body weight in XBD lambs

Productive performance of broiler rabbits

2016 ◽  
Author(s):  
R. Lavanya ◽  
M. Mahender ◽  
N. Rajanna ◽  
M. Gnanaprakash
Keyword(s):  
Least Squares ◽  
Analysis Of Variance ◽  
Feed Efficiency ◽  
The Body ◽  
Least Square ◽  
Productive Performance ◽  
Body Weights ◽  
The Difference ◽  
Range Test

The study focuses on the effect of breed on the body weights and average daily gains (ADGs) during pre-weaning (birth-4 weeks) and post-weaning (4-16weeks) of Flemish Giant, Californian White and their Crossbreds. The data was subjected to one way analysis of variance. The difference between the means was tested by significance using Duncan’s multiple range test by programming and processing in computer. The overall least squares mean body weights at birth, 1, 2, 3 and 4 weeks of age were 52.38 ± 0.69, 110.58 ± 1.77, 169.97 ± 3.23, 254.35 ± 5.77 and 398.13 ± 8.44g, respectively. The overall least square means for post-weaning body weights at 6, 8, 10, 12, 14 and 16 weeks of age were 620.90 ± 13.11, 862.50 ± 18.10, 1072.88 ± 21.40, 1302.47 ± 24.69, 1535.12 ± 26.90 and 1733.51 ± 29.09g, respectively. The influence of breed was found to be significant on body weights at all the ages except at birth and on ADGs at all ages during pre-weaning and most of the ages during post-weaning. Feed efficiency of Flemish Giant, Californian White and their crossbreds were studied during post weaning period and observed that FCR (kg DMI/ kg gain) were 3.46, 3.99 and 3.86.

Environment and genetic factors affecting wool production from sub-tropical coarse wool sheep

1977 ◽  
Vol 88 (2) ◽  
pp. 443-447 ◽  
Author(s):  
A. M. Aboul-Naga ◽  
E. A. Afifi
Keyword(s):  
Genetic Correlation ◽  
Reproductive Performance ◽  
Genetic Parameters ◽  
Genetic Factors ◽  
Factors Affecting ◽  
Wool Production ◽  
Body Weights ◽  
Performance Traits ◽  
Heritability Estimates ◽  
Fleece Weight

SUMMARYWool production from different flocks of Ossimi, Rahmani and Barki Egyptian local sheep, raised at six different locations in the country was studied. Different genetic parameters for greasy fleece weight of the three breeds were estimated.Location was of significant effect on annual greasy fleece weight of Rahmani sheep only. With the adjustment for differences in yield percentages, differences in clean wool production from one location to another were slight for the three breeds. Age of ewe was of highly significant effect on annual greasy fleece weight.Heritability estimates of annual greasy fleece weight of the ewes were found to be generally low in the three breeds (range 0·00–0·34). The estimates differed markedly with age; those of the yearling fleece weight of Rahmani and Barki ewes were the highest, being 0–19 and 0–34, respectively.Repeatability estimates of annual greasy fleece weight were also low, being 0·11–0·04 and 0·29 for Ossimi, Rahmani and Barki ewes, respectively.Estimates of genetic correlation between yearling greasy fleece weight of the Ossimi and Rahmani ewes and their weaning and yearling body weights were high and positive. Those between annual greasy fleece weight of the ewes and their reproductive performance traits differed greatly in the two breeds.

Genetic and non-genetic factors affecting body weights in Sahiwal × Friesian crosses

1972 ◽  
Vol 14 (3) ◽  
pp. 295-298 ◽  
Author(s):  
V. K. Taneja ◽  
P. N. Bhat
Keyword(s):  
Birth Weight ◽  
Analysis Of Variance ◽  
Genetic Factors ◽  
Dairy Farms ◽  
Least Square ◽  
Factors Affecting ◽  
Genetic Groups ◽  
Body Weights

SUMMARYThe data were collected from seven dairy farms in India on Sahiwal × Friesian crosses over a period of 30 years (1937–1966). There were nine distinct genetic groups (grades); Sahiwal, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4 and 7/8 Friesian and Indian Friesians (animals having 15/16 or more Friesian blood).Least-square analysis of variance was run to examine the effects of grades, farms, periods, seasons, and breed of sire on body weights at birth, 19 weeks, 12 months and 3 years. The effects due to grades, farms and periods were significant for all the traits. The effects due to season and breed of sire were significant for all traits except for weight at 3 years.The least-square constants showed that, with increase in Friesian inheritance, birth weight increased considerably, while the increase in body weights at 19 weeks, 12 months and 3 years was only marked up to the 1/2-Friesian group.

Factors affecting body weight and growth rate of Awassi lambs

1981 ◽  
Vol 97 (2) ◽  
pp. 449-452 ◽  
Author(s):  
P. N. Bhat ◽  
G. L. Koul ◽  
S. K. Koul ◽  
R. Kumar ◽  
R. C. Garg
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Average Daily Gain ◽  
The Body ◽  
Factors Affecting ◽  
Sex Type ◽  
Body Weights ◽  
Weaning Age ◽  
Average Body ◽  
Awassi Lambs

SummaryAn experiment was carried out to study the effect of early weaning on body weight and growth rate of Awassi lambs raised at Abu-Ghurib Experiment Station, Baghdad, Iraq. Sex, type of birth and weaning age significantly influenced the body weight and growth rate of lambs at all the ages studied. Dam's age and weight at lambing, however, did not affect the growth rate of the lambs. The average body weights of lambs at 4 and 6 months of age were 23·8±0·28 and 32·3 ± 0·36 kg. The average daily gain in weight up to 120 and 180 days of age was 162·3 ±2·57 and 153·7 ±1·94 g/day respectively. Males were heavier than females and singles were heavier than twins at all the ages. Lambs weaned at 60 days of age were heavier and had a faster growth rate than those weaned at 90 or 120 days of age. Males born to 2-year-old dams grew fastest while the females born to them had the lowest body weights and growth rate.

EFFECT OF NON-GENETIC AND GENETIC FACTORS ON BIRTH WEIGHT OF MENGALI SHEEP OF BALOCHISTAN

2011 ◽  
Vol 1 ◽  
pp. 121-128
Author(s):  
Muhammad Masood Tariq ◽  
Keyword(s):  
Birth Weight ◽  
Sex Ratio ◽  
Least Squares ◽  
Genetic Factors ◽  
Factors Affecting ◽  
Experimental Station ◽  
Female Sex ◽  
Significant Difference ◽  
Males And Females ◽  
Male To Female

Data on birth weight of 2377 lambs obtained from 581 dams and 56 sires of Mengali sheep born during 2005 and 2009 were recorded and analyzed to identify the factors affecting birth weight of Mengali lambs. Mengali flocks were kept under semi-intensive condition in four stations at three different locations (Experimental Station Center for Advanced studies in Vaccinology and Biotechnology (CASVAB), University of Balochistan, (ESC), Quetta, Killi Hassni, Quetta; Khadkucha, Mastung and Peer Wala (Mal), Nushki). The lambing occurred spring and autumn, however majority of the Mengali sheep (85 %) lambed during spring between (February and March months). Among the total lambs born, the male to female sex ratio was 49.43: 50.57 respectively and shown no significant difference between two sexes. The overall least-squares means for birth weight of males and females pooled over parity and type of birth were 3.61±0.36 and 3.48±0.39 kg respectively

scholarly journals Evaluation of growth, wool production and reproduction traits of Muzaffarnagari sheeps

2019 ◽  
Vol 34 (01) ◽  
Author(s):  
Gopal Dass ◽  
M. S. Dige ◽  
P. K. Rout
Keyword(s):  
Least Squares ◽  
Growth Traits ◽  
The Body ◽  
Growth Stages ◽  
Production Traits ◽  
Replacement Rate ◽  
Wool Production ◽  
Body Weights ◽  
Reproduction Traits ◽  
The Impact

Muzaffarnagari, the heaviest breed among 43 Indian sheep breeds, is originally distributed in and around Muzaffarnagar district of western Uttar Pradesh and also in some parts of Rajasthan, Haryana and Delhi states. Muzaffarnagari is a mutton type breed because the wool production is low and wool quality is very course, not suitable for carpet manufacture. To study the impact of various factors on production and reproduction traits, the data on 1080 Muzaffarnagari lambs born under Network Project on Sheep Improvement during years 2011-15 at ICAR-Central Institute for Research on Goats, Makhdoom, Farah, Mathura (UP) were recorded for growth traits i.e. body weights at birth, 3, 6, 9 and 12 month age, wool production traits viz. greasy fleece yields of lambs in first and second six monthly clips and reproduction traits viz. tupping, lambing on available basis, lambing on bred basis, twinning and replacement rate of ewes. The overall least squares means for body weights at birth, 3, 6, 9 and 12 months age were 3.55±0.02, 16.02±0.12, 24.46±0.18, 29.18±0.19 and 33.52±0.19 kg, respectively and average daily gains (ADGs) during 0–3, 3-6, 6-12 and 3-12 months age groups were 138.56±1.27, 92.18±1.22, 63.87±0.64 and 50.89±0.86g, respectively. The overall least squares means for lambs 1st and 2nd six monthly clips 533.23±5.47 and 544.43±5.94g, respectively. The effect of sex, year of lambing, parity and type of birth of lambs had highly significant (P 0.01) influence on all growth and wool production traits except non significant effect of year on birth weight, parity on 3-6, 6-12 and 3-12 months ADG, type of birth on 3-6 month ADG, sex on lambs first clip and type of bith on lambs second clip. On comparison, male lambs were found superior than female lambs for all body weights and fleece yields. During year 2013, all the body weights and greasy fleece yields were recorded to be highest. Parity of ewes did not show any definite trend for growth traits while type of birth indicated that lambs born as single gained heavier weights at all growth stages and produced heavier clips than multiple born lambs. Tupping, lambing on available basis, lambing on bred basis, twinning and replacement rate ranges from 86.9-100.0, 74.3-91.0, 83.2-92.5, 10.9-20.3 and 24.5-33.2%, respectively. This study revealed that 0-3 month lambs growth is very crucial which needs proper management, feeding and health care and selection of breeding rams based on their six month body weight was effective for genetic improvement of Muzaffarnagari sheep for growth and reproduction traits.

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