Genetic analysis of reproductive Traits of Tharparker cattle at organized farms in Rajasthan

2017 ◽  
Author(s):  
Geetesh Mishra ◽  
M. F. Siddiqui ◽  
V. S. Ingle ◽  
R. S. Pal
Keyword(s):  
Least Squares ◽  
Management Practices ◽  
Correlation Coefficients ◽  
Reproductive Traits ◽  
Gestation Period ◽  
Effective Management ◽  
Dry Period ◽  
Age At First Calving ◽  
Service Period ◽  
Tharparkar Cattle

The present study was carried out from the data obtained on the reproduction performance of 95 Tharparkar cattle over the period 1995-2014. The overall least squares mean and standard error for age at first calving, service period, gestation period, dry period and intercalving period were 1769.07± 29.80, 117.53± 2.39, 281.62± 0.37, 105.03 ± 2.09 and 399.97 ± 2.44 days, respectively. The Least Squares Analysis of Variance has revealed that there was a significant effect of sire ( P>0.01) and period (P>0.05) on age at first calving and the service period is significantly influenced by period and parity of the animal .Similarly the gestation period was affected by parity, dry period was affected by period of study and inter calving period was substantially influenced by period and parity of the animal. The observed correlation coefficients among different reproductive traits were significant to highly significant where as the estimates of heritability for the same traits were low to moderate. The significant effect of several non-genetic factors on most of the reproductive traits suggesting that they are low heritable and cannot be improved by conventional selection methods but can only be improved through effective management practices, nutrition, health etc..

scholarly journals Evaluation of Assamese buffaloes considering important economic traits under field conditions in their home tracts

2020 ◽  
Vol 12 (1) ◽  
pp. 19-24
Author(s):  
Shafiqul Islam ◽  
Safeer Alam ◽  
Gurjeet Kaur ◽  
Amulya Gogai
Keyword(s):  
Field Conditions ◽  
Gestation Period ◽  
Economic Traits ◽  
Dry Period ◽  
Good Source ◽  
Age At First Calving ◽  
Lactation Length ◽  
Large Size ◽  
Service Period ◽  
Reproduction Traits

The Assamese buffaloes are being reared by the farmers/breeders for milk, meat and for draught purposes. These buffaloes are known for higher fat contents in their milk (8.5 percent on an average) and are famous in the market with a great demand and are known as “Khuti milk”. They are good source of livelihood for breeders and the graziers both in its breeding tract and have attracted researchers to consider the study of some important economic traits under field conditions. The present study was organized and considered the data on a total of 324 Assamese buffaloes distributed over three districts namely Kamrup, Nagaon and Darrang in Assam covering 35 khutis (open herds) during the year 2015-16   eighteen months. The lactation milk yield of Assamese buffalo was observed as 448.38±1.67 kg with a lactation length of 237.06±0.74 days and the peak yield and days to attain were measured as 3.41±0.02 kg and 54.16±0.19 days respectively. The reproduction traits like age at first calving, gestation period, service period and inter-calving period were considered for the study based on the breeders’ interview using pre-structured formats. The age at first calving was recorded as 52.28±0.81 months, the gestation period was observed as 323.10±0.68 days with an inter-calving period of 465.70±1.67 day. The service period and the dry period for these buffalo was 171.34±0.82 and 252.84±1.47 days respectively. The production and reproduction performance of Assamese buffaloes need special attention to be addressed for further improvements to help a large size of population of Assam, who are entirely depending for their livelihood on these valuable AnGR (buffaloes) of Assam.

Genetic analysis of fertility traits in Jersey crossbred cows

2017 ◽  
Author(s):  
Anshuman Kumar ◽  
Ajoy Mandal ◽  
A. Gupta ◽  
M. Karunakaran ◽  
S. Das ◽  
...  
Keyword(s):  
Management Practices ◽  
Genetic Relationships ◽  
Random Effect ◽  
Reproductive Traits ◽  
Calving Interval ◽  
Genetic Progress ◽  
Factors Affecting ◽  
Service Period ◽  
Parity Number ◽  
Fertility Traits

The present study was carried out to evaluate the genetic and non-genetic factors affecting fertility traits viz., number of service per conception (NSPC), service period (SP) and calving interval (CI) and genetic and phenotypic parameters of these traits in Jersey crossbred cattle, maintained at Eastern Regional Station of ICAR-National Dairy Research Institute, Kalyani, West Bengal over a period of 39 years (1976-2014). The least squares means for the NSPC, SP and CI were 1.73±0.08 inseminations, 156.37±7.47 days and 458.32±9.56 days respectively. The study revealed that all the traits were decreasing significantly with parity number. Season was important in determining service period, whereas period of calving influenced calving interval in this study. NSPC, SP and CI did not differ significantly among different genetic groups; but, half-breds of Jersey and Tharparkar (½ Jersey-½ Tharparkar) showed comparatively lower NSPC, SP and CI than half-breds of Jersey and Red Sindhi and other crosses in this study. The random effect of sire was highly significant on all the fertility traits considered in this study. Heritability estimates for NSPC, SP and CI were 0.08±0.06, 0.18±0.08 and 0.16±0.08 respectively. All the three analyzed traits had close genetic relationships. Low to moderate heritability of reproductive traits indicates slow genetic progress through selection and further improvement in reproductive performance can be made either by better management practices or including large number of polymorphic markers associated with fertility in the population to assist animal selection

Study on ages at first mating and calving of Murrah buffaloes in hot and humid climate of Tamil Nadu, India

2015 ◽  
Author(s):  
A. K. Thiruvenkadan ◽  
S. Panneerselvam ◽  
N. Murali
Keyword(s):  
Milk Yield ◽  
Tamil Nadu ◽  
Coastal Region ◽  
Dry Period ◽  
Humid Climate ◽  
Age At First Calving ◽  
Murrah Buffaloes ◽  
Lactation Length ◽  
Service Period ◽  
Consequent Increase

Data on ages at first mating and first calving of Murrah buffaloes to identify the effect of various non-genetic factors on these traits. Period and season were the fixed environmental effects considered for both the traits studied. The overall least-squares means for ages at first mating and calving were 1222.3 ± 11.0 and 1578.7 ± 20.3 days respectively. Period had highly significant (Pe at first calving with peak yield, days to attain peak yield, 305-day milk yield, lactation length, lactation milk yield, milk yield per day of lactation, service period, calving interval, dry period and number of services per conception were -0.214 ± 0.32, 0.013 ± 0.31, 0.089 ± 0.33, 0.584 ± 0.47, 0.166 ± 0.35, -0.177 ± 0.30, 0.576 ± 0.53, 0.563 ± 0.55, 0.276 ± 0.49 and 0.944 ± 0.83 respectively. The study revealed that the ages at first mating and calving observed in Murrah buffaloes at coastal region of Tamil Nadu is comparable to those reported in its breeding tract and elsewhere in India. A negative genetic correlation between age at first calving and milk yield per day of lactation indicated that the selection based on milk yield per day of lactation would lead to reduction in age at first calving with consequent increase of milk yield per day of lactation in future generations.

Effect of Season and Age at First Calving on Early Performance Traits in Murrah Buffaloes

2020 ◽  
Vol 6 (02) ◽  
Author(s):  
GURPREET KOUR ◽  
RAMAN NARANG ◽  
AMANDEEP SINGH
Keyword(s):  
Genetic Factors ◽  
Calving Interval ◽  
Dry Period ◽  
Age At First Calving ◽  
Murrah Buffaloes ◽  
Lactation Length ◽  
Service Period ◽  
Productive Traits ◽  
Early Performance ◽  
Animal Sciences

The present investigation was carried on 659 Murrah buffaloes, sired by 188 bulls, maintained at Directorate of Livestock Farms, Guru AngadDev Veterinary and Animal Sciences University, Ludhiana, for the duration of 27 years (1991-2017). The purpose of this study was to investigate the effect of non-genetic factors like season and age at first calving on early reproductive and productive traits like age at first calving (AFC), first service period (FSP), first calving interval (FCI) and age at puberty (AAP), 305 day milk yield (305MY), first lactation length (FLL), first peak yield (FPY), first days to attain peak yield (DPY) and first dry period (FDP). Season of calving had highly significant influence on FSP, FCI and FDP, significant effect on AFC, AAP, 305MY, FLL and FPY and non-significant effect on DPY. Age at first calving had non-significant effect on all the studied traits.

Correlation between extremes age at first calving with their productive and reproductive performances in Indian Murrah buffaloes (Bubalusbubalis)

2018 ◽  
Author(s):  
Ranjeet Verma ◽  
Inderjeet Singh ◽  
Ashok K. Balhara ◽  
Varij Nayan ◽  
Rakesh Kumar Sharma ◽  
...  
Keyword(s):  
Calving Interval ◽  
Dry Period ◽  
Important Indicator ◽  
Age At First Calving ◽  
Murrah Buffaloes ◽  
Lactation Length ◽  
Service Period ◽  
Performance Traits ◽  
Group 2 ◽  
Group 1

The dairy economics is greatly affected by the age at first calving as it is an important indicator of precocity and fertility. The present study was carried out to deduce the important productive and reproductive performance traits related to their extremes age at first calving in Murrah buffaloes. Recorded the data of reproductive and productive performances trait of Murrah buffaloes maintained at the animal farm section, ICAR-Central Institute for Research on Buffaloes, Hisar, India during the period of last fifteen year (2001-15). The data of 2753 buffaloes were screened out, on the basis of age at first calving (AFC) categorized into two extreme group. Only 88 out of 2753 buffaloes showed the extremes AFC and categorized as group 1 (n=17 in first parity, 12 in second parity) and group 2 (n=71 in first parity, 36 in second parity) having £36 and ³48 months of AFC respectively. The extreme AFC with their performance traits viz. service period, calving interval, dry period, lactation length and milk yields were included in the analysis. The mean service period, calving interval, dry period was lower in group 1 whereas lactation length and milk yields no differences in between groups. The low milk production was observed in first lactation irrespective to their groups. The extreme AFC was not significantly associated with their performance traits (service period, calving interval, dry period, lactation length and milk yields) in both within and between groups (p >0.05) whereas service period significantly associated with calving intervals (p less than 0.01).

Effect of Service Period, Gestation Period and Dry Period on Milk Production Traits in Kankrej Cattle

2016 ◽  
Vol 12 (2) ◽  
Author(s):  
Nawal Kishor Pareek ◽  
K. J. Ankuya ◽  
M. P. Patel ◽  
B. S. Rathod ◽  
K. B. Prajapati
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Genetic Factors ◽  
Gestation Period ◽  
Research Station ◽  
Production Traits ◽  
Milk Production Traits ◽  
Dry Period ◽  
Lactation Length ◽  
Service Period

The present investigation was undertaken to study the effect of non-genetic factors, viz., service period (SP), dry period (DP) and gestation period (GP) on various milk production traits in Kankrej cattle. 1235 lactation records (2nd-7th) of 475 Kankrej cows, progeny of 75 bulls that were maintained at University Livestock Research Station, Sardarkrushinagar (Gujarat), calved during 1980-2014, were studied. The effects of service period (111.64 ± 52.55 days) and dry period (143.17±28.78 days) on total lactation milk yield (2089.45±582.38 kg),305 days milk yield (2045.66±531.92 kg) and lactation length (282.90±49.46 days) were highly significant (pis less than 0.01), while the effect of gestation period (288.86±7.14 days) was non-significant on all these production traits. Cows which took more time to conceive after parturition produced more milk with longer lactation length

Characterisation of Indian Kathiawari horses

1997 ◽  
Vol 21 ◽  
pp. 71-80 ◽  
Author(s):  
R. K. Pundir ◽  
R. K. Vijh ◽  
R. N. Shukla ◽  
A. S. Vyas ◽  
B. K. Bhavsar ◽  
...  
Keyword(s):  
Management Practices ◽  
Herd Size ◽  
Physical Characteristics ◽  
Gestation Period ◽  
Intensive Management ◽  
Body Measurement ◽  
Body Colour ◽  
Service Period

SummaryThe breeding tract of Kathiawari horses is the Saurashtra region of Gujrat, comprising of the Rajkot, Bhavnagar, Surendranagar, Junagarh and Amreli districts. Kathiawari horses are reared for carting, riding, sports and transportation. The breed is closely related with the Marwari breed of Rajasthan. The most predominant body colour is chestnut in Kathiawari horses and black in Marwari horses. The capital nags of the Kathiawari breed are from 14 to 14.5 HH, sound, sure footed and hardy, fast and decidedly good looking. The herd size at farmer level varied from 1 to 4. In the study an attempt has been made to note the physical characteristics and management practices for rearing these horses in the breeding tract. Body measurement of Kathiawari and Marwari horses were recorded. It was observed that Kathiawari horses had a smaller body, shorter height, smaller heart girth, ears and face than the Marwari horses. The performance of the Kathiawari breed under intensive management was studied. The average age at first fertile service, and at first foaling, herd life, total foals during lifetime, gestation period, service period and foaling interval were 1 658±79 days, 1 989±80 days, 6 499±650 days, 4.93±0.52 foals, 333.58±1.76 days, 257.23±46.49 days and 597.76±49.70 days, respectively.

scholarly journals The effect of breeding region on certain fertility parameters of Simmental cows

2008 ◽  
Vol 24 (3-4) ◽  
pp. 1-8 ◽  
Author(s):  
Vlada Pantelic ◽  
Z. Skalicki ◽  
M.M. Petrovic ◽  
S. Aleksic ◽  
D. Ostojic-Andric ◽  
...  
Keyword(s):  
Least Squares ◽  
Method Of Least Squares ◽  
Age At First Calving ◽  
Production Stage ◽  
Service Period ◽  
Cattle Reproduction

Field of cattle reproduction is the most important production stage because it is in this stage that heads of cattle for renewal of herd are provided, also for production of milk and fattening, i.e. production of meat. In this study, the effect of breeding region on variability of age at calving and duration of service period in 3.641 first calving Simmental cows under control, reared on private farms on the territory of Republic of Serbia was investigated. In the analysis of collected data the method of Least Squares was used LSMLMW (Harvey 1990) according to following formula: Ykm = ? + Rk + ekm. Regions had highly significant effect (P<0,01) on age at first calving and duration of service period. Through application of method of Least Squares average service period of 115,19 days and age at first calving of 795,53 days were established.

scholarly journals Investigation of the effect of certain paragenetic factors on fertility traits of bull dams of Simmental breed

2005 ◽  
Vol 21 (3-4) ◽  
pp. 35-41 ◽  
Author(s):  
Vlada Pantelic ◽  
Zlatko Skalicki ◽  
D. Latinovic ◽  
Milan Petrovic ◽  
Denis Kucevic
Keyword(s):  
Least Squares ◽  
Reproductive Traits ◽  
Objective Evaluation ◽  
Agricultural Producers ◽  
Mean Values ◽  
Service Period ◽  
General Average ◽  
The Republic ◽  
Fertility Traits ◽  
Duration Of Pregnancy

Investigation included bull dams of Simmental breed selected on farms of agricultural producers on the territory of the Republic of Serbia. Method of Least Squares - LSMLMW (Harvey 1987) was used for analysis of the effect of region and order of lactation on reproductive traits. Obtained results indicate the justification for investigation of paragenetic factors, since the knowledge of their effect can contribute to more objective evaluation of random effects. Regions had highly significant effect (P<0,01) on age at first conception, duration of service period and interval between calvings whereas no significant effect on duration of pregnancy was registered (p>0.05). The effect of region of breeding many factors are included and most important one is nutrition. Order of lactation as second factor investigated in this research had no effect on any of the fertility traits (p>0.05). General average of mean values of least squares for fertility was: for age at first conception 517.61 days, duration of pregnancy 285.51 days, duration of service period 108.98 days, interval between calving 395.34 days.

scholarly journals Buffaloes Production and Reproduction Efficiencies as Reviewed for Parity in Nepal

2020 ◽  
Vol 8 (1) ◽  
pp. 1-6
Author(s):  
Sadikshya Lamsal ◽  
Deepak Subedi ◽  
Krishna Kaphle
Keyword(s):  
Production Efficiency ◽  
Management Practices ◽  
Genetic Factors ◽  
Production Traits ◽  
Dry Period ◽  
Factors Affecting ◽  
Indigenous Breed ◽  
Lactation Length ◽  
Service Period ◽  
Reproduction Traits

Buffalo rearing is major part of Nepalese agriculture and they are reared for milk, meat, draft power and manure. Buffaloes are the main source of milk production in Nepal producing about 65.3% of the total annual milk in the country. Different indigenous breeds such as Lime, Parkote and Gaddi as well as Indian Murrah and Nili Ravi are recorded in Nepal and they are raised in different management and production system. Different genetic and non-genetic factors cause variation in production and reproduction performance between these breeds and within these breeds also. Non genetic factors affecting the performance of these buffaloes are season of calving, parity, management practices, nutrition etc. In this paper, effect of parity on production traits such as colostrum period, lactation length, lactation yield and days to reach peak milk yield as well as reproduction traits such as calving interval, dry period and service period are reviewed. Thus, this paper after reviewing related articles from various journals, proceedings and magazines is aimed to evaluate the effect of parity on reproductive and production efficiency of buffaloes of Nepal. Though the performance of indigenous breed is generally considered low, there is high potential of these breeds under proper breeding and management programs. Int. J. Appl. Sci. Biotechnol. Vol 8(1): 1-6.

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