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.

scholarly journals Reproductive parameters in Yorkshire terrier dogs in Poland

2018 ◽  
Vol 63 (No. 4) ◽  
pp. 168-174
Author(s):  
M. Goleman ◽  
M. Karpinski ◽  
P. Czyzowski ◽  
W. Tuszynska-Bogucka ◽  
L. Drozd
Keyword(s):  
Litter Size ◽  
Correlation Coefficients ◽  
The Body ◽  
Gestation Length ◽  
Reproductive Parameters ◽  
Body Weights ◽  
Reproduction Traits ◽  
The Impact ◽  
Type Of Delivery ◽  
Yorkshire Terrier

The aim of this study was to determine the basic reproductive parameters, i.e., litter size, gestation length, neonatal mortality rate and the type of delivery in Yorkshire terrier dogs, one of the most popular breeds in Poland. We have verified a hypothesis put forward by breeders that larger females have fewer whelping difficulties and produce larger litters and that pregnancies of females having one or two pups last longer. The focus of investigation was reproductive data from 66 Yorkshire terrier females registered in the Lublin Branch of the Polish Kennel Club, an FCI (Federation Cynologique Internationale) member, which whelped 124 litters comprising in total 508 pups from 37 fathers. The data were collected between August 2009 and December 2014. The significance of differences was verified using Mann-Whitney U and Kruskal-Wallis H-tests. The relationships between the recorded dogs’ reproduction traits were estimated by calculation of Spearman’s correlation coefficients with the use of the statistical programmes Statistica and SPSS 20. The investigations have confirmed the hypothesis concerning the larger litter size produced by larger females and the lower incidence of postpartum dystocia; however, the hypothesis of the impact of body weight on the length of pregnancy was rejected. The differences between the body weights of stud females and males reached 125%. The Yorkshire terrier appears to be a good reproductive breed with normal reproductive functions and good reproductive parameters.

Maintenance rations for Merino sheep. IV. The performance of adult Merino ewes fed daily and weekly at three levels of energy intake

1957 ◽  
Vol 8 (1) ◽  
pp. 75 ◽  
Author(s):  
PK Briggs ◽  
MC Franklin ◽  
GL McClymont
Keyword(s):  
Body Weight ◽  
Sodium Chloride ◽  
Energy Intake ◽  
Survival Rates ◽  
Experimental Period ◽  
The Body ◽  
Merino Sheep ◽  
Wool Production ◽  
Body Weights ◽  
The Mean

Dry adult Merino ewes were fed at daily or weekly intervals on oat grain at levels which provided 4.0, 3.0, or 2.0 lb starch equivalent (S.E.) per sheep per week. The experimental periods were 223, 223, and 181 days respectively. Differences between the mean body weights of the ewes a t the three levels of feeding were highly significant (P < 0.001). Body weight varied only slightly and no losses occurred in ewes fed weekly at the rate of 4.0 lb S.E. per head. Ewes fed daily a t this level had a significantly greater mean body weight (P < 0.001) a t the conclusion of the 223-day experimental period. The addition of a sodium chloride supplement did not improve the body weight or wool production of ewes fed weekly a t the level of 4.0 lb S.E. The mean body weight of ewes fed at the levels of 3.0 or 2.0 lb S.E. per head declined over the first 12 and 18 respectively and thereafter remained relatively constant. There were no significant differences at these levels of feeding between groups fed daily and weekly in respect of body weight, wool production, or survival rates. Ewes fed a t the level of 4.0 lb S.E. grew significantly more wool than those given 3.0 lb S.E. (P < 0.001). Losses were negligible in all groups except those fed a t the level of 2.0 lb S.E. In these groups there were few deaths in the first 16 weeks, but in the subsequent 10 weeks losses totalled 17.1 per cent. Ewes fed a t the level of 2.0 lb S.E. consumed their rations at a significantly slower rate (P < 0.01) than did those fed a t the level of 4.0 lb S.E.

Genetic and phenotypic parameters for reproduction, production and bodyweight traits in Australian fine-wool Merino sheep

2018 ◽  
Vol 58 (2) ◽  
pp. 207 ◽  
Author(s):  
S. Dominik ◽  
A. A. Swan
Keyword(s):  
Genetic Relationships ◽  
Genetic Correlations ◽  
Fibre Diameter ◽  
Careful Consideration ◽  
Production Traits ◽  
Merino Sheep ◽  
Wool Production ◽  
Phenotypic Correlations ◽  
Reproduction Traits ◽  
Definition Of

The present study estimated phenotypic and genetic relationships between wool production, reproduction and bodyweight traits in Australian fine-wool Merino sheep. The data for the study originated from the CSIRO Fine Wool Project, Armidale, Australia. Data on wool characteristics, measured at ~10 and 22 months of age, bodyweight and several reproduction traits across consecutive lambing opportunities were analysed. The genetic correlations were moderately negative between fibre diameter measured as yearling and adult, and lamb survival (rg = –0.34 ± 0.15 and rg = –0.28 ± 0.14 respectively) and total number of lambs weaned (rg = –0.32 ± 0.21 and rg = –0.40 ± 0.21 respectively). The genetic correlations of yearling and adult greasy and clean fleece weights with number of lambs weaned and fecundity showed moderately to highly negative relationships and a moderately negative correlation with the number of fetuses at pregnancy scanning. Phenotypic correlations between reproduction and wool production traits were estimated to be zero, with the exception of bodyweight showing low to moderate positive phenotypic correlations with total number of lambs born and weaned. Genetic variances were generally low for the reproduction traits and resulted in low heritability estimates (from h2 = 0.03 ± 0.01 to h2 = 0.12 ± 0.13), with the exception of total number of lambs born (h2 = 0.25 ± 0.03). The study indicated that parameter estimation and trait definition of lifetime reproduction records require careful consideration and more work in this area is required.

scholarly journals Estimation of phenotypic and genetic trends of the growth traits in Lipska and Svrljig sheep

2012 ◽  
Vol 28 (4) ◽  
pp. 743-749
Author(s):  
V. Caro-Petrovic ◽  
M.P. Petrovic ◽  
M.M. Petrovic ◽  
Z. Ilic ◽  
N. Maksimovic ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Traits ◽  
Genetic Correlations ◽  
The Body ◽  
Phenotypic Correlations ◽  
Body Weights ◽  
First Time ◽  
Genetic Trends ◽  
Birth Type

Some phenotypic and genetic trends on growth traits of lambs are observed. The research implicated lambs of two local breeds of sheep: Lipska (LP) and Svrljig (SV). All lambs were weighed for the first time at birth (BWB), and thereafter, regularly in two-week intervals. On the basis of the results during weighing the body weight (BW) were adjusted to the average age: 30 (BW30), 60 (BW60) and 90 days (BW90). Results of the effect of genotype on growth showed a significant effect on the growth traits. Sex of lambs had a significant effect at birth and very significant effect at 30 days, but had no significant effect on weight at 60 (BW60) and 90 (BW90) days. Birth type had significant effect on the body weight from birth to weaning and the highest body weights were recorded in singles. Phenotypic correlations were positive and very highly significant between the growth traits. Genetic correlations were significant, but not between all observed ages of lambs.

scholarly journals Effect of DGAT1, BTN1A1, OLR1, and STAT1 genes on milk production and reproduction traits in the Czech Fleckvieh breed

2014 ◽  
Vol 59 (No. 2) ◽  
pp. 45-53 ◽  
Author(s):  
J. Rychtářová ◽  
Z. Sztankóová ◽  
J. Kyselová ◽  
V. Zink ◽  
M. Štípková ◽  
...  
Keyword(s):  
Milk Production ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Breeding Value ◽  
Production Traits ◽  
Milk Production Traits ◽  
Heterogeneous Effects ◽  
Reproduction Traits ◽  
Estimated Breeding Value ◽  
The Impact

The impact of polymorphism of the diacylglycerol acyltransferase (DGAT1), butyrophilin (BTN1A1), oxidized low-density lipoprotein receptor (OLR1), and signal transducer and activator of transcription 1 (STAT1) genes on milk production and reproduction traits in 419 Czech Fleckvieh cows was examined using polymerase chain reaction and restriction fragment length polymorphism. The loci DGAT1 and BTN1A1 were observed simultaneously to affect milk production, estimated breeding value of milk production traits, as well as reproduction parameters. Significant differences were found also between genotypes of the STAT1 loci in relation to estimated breeding value of milk production traits. Similar findings in pure dairy breeds suggest that heterogeneous effects of the observed loci can be explained by different genetic backgrounds in various breed populations selected to achieve different commercial goals. Thus, it is necessary to determine variability and influence of a molecular marker in a specific population when considering its inclusion into a breeding programme. &nbsp;

Impact of community based breeding program on breeding buck availability, growth and reproductive performance of Black Bengal goat

2020 ◽  
Vol 49 (1) ◽  
pp. 13-21
Author(s):  
M Solaiman ◽  
AS Apu ◽  
MY Ali ◽  
M Fakruzzaman ◽  
MO Faruque
Keyword(s):  
Body Weight ◽  
Body Weight Gain ◽  
Post Partum ◽  
The Body ◽  
Breeding Program ◽  
Community Based ◽  
Body Weights ◽  
And Performance ◽  
The Impact ◽  
Black Bengal Goat

The present study was undertaken to evaluate the availability of breeding bucks as well as growth and reproductive performances of Black Bengal goat under community based breeding program. A total of 30 goat rearers in three areas of Sakhipur upazilla were selected based on the survey result. Selected goat rearers were trained on scientific rearing, management and community-based breeding of Black Bengal goat and also build up community link with them. Three Black Bengal breeding bucks have been distributed among three potential farmers in three villages under Sakhipur upazilla. The management and performance of Black Bengal goats were monitored closely and analyze the impact of community based breeding program. The analysis of the growth performance showed that male kids attained significantly (p<0.05) higher birth weight (1.28±0.04 kg) than that of female kids (1.06±0.02 kg). The body weights of male at 3, 6, 9 and 12-month were 5.41±0.28, 9.18±0.32, 12.87±0.35 and 16.91±0.46 kg whereas female reached significantly (p<0.05) lower body weight as 4.97±0.16, 8.02±0.21, 10.91±0.23 and 14.21±0.34 kg at the same ages, respectively. Average daily body weight gain up to 12 months of age was also significantly (p<0.05) higher in males (43.42±1.17 g/day) than females (36.53±2.49 g/day). On the other hand, season had a significant effect (p<0.05) on the body weights of Black Bengal goat at 0 (birth), 3, 6, 9, 12-month of age. In case of reproductive performances, it was revealed that age at sexual maturity was 199.32±2.41 days; age at first kidding 393.23±1.38 days; service per conception 1.17±0.04, and litter size was 1.76±0.08 in community based breeding program. Beside these, post-partum heat period of Black Bengal goat was found 47.50±0.87 days. Comparing with the findings of previous research works, these results suggested that community based breeding program has not only reduced the scarcity of good quality breeding bucks but also improved the growth and reproductive performances of Black Bengal goats. Bang. J. Anim. Sci. 2020. 49 (1): 13-21

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.

The impact of rabbits on a grazing system in eastern New South Wales. 2. Sheep production

2002 ◽  
Vol 42 (7) ◽  
pp. 917 ◽  
Author(s):  
P. J. S. Fleming ◽  
J. D. Croft ◽  
H. I. Nicol
Keyword(s):  
Body Condition ◽  
Synergistic Effects ◽  
Fibre Diameter ◽  
The Body ◽  
Stocking Rate ◽  
Economic Implications ◽  
Wool Production ◽  
Sheep Production ◽  
Short Term Experiment ◽  
The Impact

Much research, time and money have been invested in the control of rabbits in Australia, yet the relationship between rabbit density and livestock production losses has not been quantified. We experimentally investigated the variations in sheep production parameters caused by 4 densities of rabbits, 0, 24, 48 and 72 rabbits/ha. Medium to strong wool merino wethers were run at a constant stocking rate in replicated plots with rabbits at 4� different densities. Sheep liveweight and body condition and wool production variables were measured over 3�years. Low to medium densities of rabbits were not found to reduce liveweights of wethers, whereas wethers run with the high density of rabbits were significantly lighter. The presence of rabbits reduced the body condition of sympatric sheep with the lowest body condition recorded at the high rabbit density. Mean greasy fleece weights, wool yields and clean-fleece weights were significantly different between densities of rabbits. Wethers run with the high rabbit density grew less wool than the wethers run with the other 3 densities of rabbits. The cumulative gross return per ha from wool production was highest for the medium rabbit density and lowest at high rabbit density. At the conclusion of this short-term experiment, the presence of some rabbits enhanced returns from wool production because of lower fibre diameter and comparable clean-fleece weights of fleeces grown at low and medium rabbit densities. These production characteristics might have been caused by synergistic effects on pasture growth or a sheep stocking rate that was too conservative for the prevailing seasonal conditions. At high rabbit density, competition for pasture between rabbits and sheep overrode possible synergistic and understocking effects. The economic implications of the presence of rabbits on merino sheep production are discussed.

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.

scholarly journals  Impact of economic parameters on economic values in dairy sheep

2013 ◽  
Vol 58 (No. 1) ◽  
pp. 21-30 ◽  
Author(s):  
Z. Krupová ◽  
E. Krupa ◽  
M. Wolfová
Keyword(s):  
Milk Production ◽  
Litter Size ◽  
Functional Traits ◽  
Milk Yield ◽  
Growth Traits ◽  
Economic Value ◽  
Production Traits ◽  
Economic Values ◽  
Economic Parameters ◽  
The Impact

The impact of variation in economic conditions on the economic values of fourteen production and functional traits was examined for the Improved Valachian breed using a bio-economic model implemented in the ECOWEIGHT software. The following economic parameters were investigated: market prices of lambs, milk, and cheese (variation &plusmn; 40%), costs for roughage, concentrates, and total feeding rations , costs for labour and veterinary care, fixed costs (variation &plusmn; 20% for all costs), and discount rate of revenues and costs (0 and 3%). Results of the analyses were presented in detail for the marginal and relative economic values of the four most important traits: milk yield in the 150-day milking period, conception rate of ewes, litter size per lambed ewe, and productive lifetime of ewes. Furthermore, cumulative relative economic values of the four trait complexes &ndash; milk production, growth, functional, and wool traits &ndash; were presented. Prices for sheep products were found to be the most important factor for both the marginal and the relative economic values of the evaluated traits. The four traits with the highest relative economic values in the base calculation stayed the most important for all investigated economic parameters ranges. The relative economic values of the remaining 10 traits did not exceed 6.1%. The relative economic values of milk yield and litter size were the most sensitive to the variation in economic circumstances. For the investigated range of economic parameters, the relative economic value for the complex of milk production traits ranged 30.6&ndash;48.1%, for growth traits 6.3&ndash;9.4%, and that for functional traits 45.4&ndash;59.7%. The relative economic value for the wool trait did not exceed 0.3%.

Sign in / Sign up

Export Citation Format

Share Document