Genetic parameters of production efficiency traits in murrah buffaloes

2018 ◽  
Vol 27 (1) ◽  
pp. 19
Author(s):  
Himanshu R. Patil ◽  
Surender S. Dhaka ◽  
Abhay S. Yadav ◽  
Chandershekhar S. Patil
Keyword(s):  
Production Efficiency ◽  
Genetic Parameters ◽  
Murrah Buffaloes

scholarly journals Estimates of genetic parameters of economic traits in murrah buffaloes

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
GURPREET KOUR ◽  
Keyword(s):  
Production Efficiency ◽  
Genetic Parameters ◽  
Genetic Factors ◽  
Phenotypic Correlation ◽  
Calving Interval ◽  
Economic Traits ◽  
Murrah Buffaloes ◽  
Lactation Length ◽  
Early Performance ◽  
Animal Sciences

Data from 1991 to 2017, pertaining to early performance traits was collected from 659 Murrah buffaloes, sired by 188 bulls, maintained at Directorate of Livestock Farms, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab. Least squares means and effect on non-genetic factors were evaluated for economic traits. Moderate heritability estimates of 0.217 ± 0.00, 0.231 ± 0.00, 0.260 ± 0.046 were calculated for first calving interval (FCI), First 305 day milk yield (F305MY) and first peak yield (FPY) respectively and low heritability values of 0.015± 0.025 and 0.043 ± 0.03 were estimated for age at first calving (AFC) and first lactation length (FLL) respectively. The phenotypic and genetic correlation of AFC was found to be positive with FLL and FCI and negative with F305MY and FPY. Although the production efficiency traits like F305MY, FLL and FPY had high positive genetic and phenotypic correlation among themselves.

scholarly journals Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil

2007 ◽  
Vol 6 (sup2) ◽  
pp. 368-371 ◽  
Author(s):  
R. Aspilcueta-Borquis ◽  
A. Tanaka ◽  
L. Albuquerque ◽  
R. Sesana ◽  
L. Seno ◽  
...  
Keyword(s):  
Milk Fat ◽  
Genetic Parameters ◽  
Protein Yield ◽  
Murrah Buffaloes

scholarly journals Estimation of genetic parameters of weekly test-day milk yields and first lactation 305-day milk yield in Murrah buffaloes

2014 ◽  
Vol 7 (12) ◽  
pp. 1094-1098 ◽  
Author(s):  
Saroj Kumar Sahoo ◽  
Avtar Singh ◽  
A. K. Gupta ◽  
A. K. Chakravarty ◽  
Manvendra Singh ◽  
...  
Keyword(s):  
Milk Yield ◽  
Genetic Parameters ◽  
Murrah Buffaloes ◽  
Estimation Of Genetic Parameters

scholarly journals Genetic parameters for milk, fat and protein yields in Murrah buffaloes (Bubalus bubalis Artiodactyla, Bovidae)

2010 ◽  
Vol 33 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Rusbel Raúl Aspilcueta-Borquis ◽  
Roberta Cristina Sesana ◽  
Milthon Honorio Munoz Berrocal ◽  
Leonardo de Oliveira Seno ◽  
Annaiza Braga Bignardi ◽  
...  
Keyword(s):  
Milk Fat ◽  
Genetic Parameters ◽  
Bubalus Bubalis ◽  
Murrah Buffaloes

0360 Genetic parameters and trends for length of productive life and lifetime production efficiency traits in Thai Landrace and Yorkshire sows

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 174-174
Author(s):  
U. Noppibool ◽  
M. A. Elzo ◽  
S. Koonawootrittriron ◽  
T. Suwanasopee
Keyword(s):  
Production Efficiency ◽  
Genetic Parameters ◽  
Productive Life

Genetic parameters among lactational performance traits in Murrah buffaloes

2015 ◽  
Author(s):  
A. Godara ◽  
D. Singh ◽  
S. S. Dhaka
Keyword(s):  
Genetic Correlation ◽  
Milk Yield ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Research Centre ◽  
Murrah Buffaloes ◽  
Performance Traits ◽  
Lactational Performance ◽  
Almost All ◽  
Animal Sciences

The data pertinent to lactational performance traits on Murrah buffaloes calved during period 1987 to 2002, progeny of 52 sires maintained at Buffalo Research Centre, LLR University of Veterinary and Animal Sciences, Hisar were considered. The estimates of heritability were obtained low to moderate for almost all lactational performance traits. All the first lactation traits viz., AC1, SP, CI, MY, LL, PY, DAPY and MY/LL had moderate to high positive genetic correlations among themselves except PY with CI and DAPY with AC1, which is negative. Age at calving (AC2) had moderate positive genetic correlation with second lactational performance traits like SP, MY, LL, PY, MY/LL and MY/CI and had negative correlations with DAPY and DP. Moreover, third lactational traits like milk yield, LL, PY, DAPY, MY/LL and MY/CI had high positive genetic correlations among themselves. However, age at calving during fourth lactation had positive genetic correlations with all the traits except CI, DAPY and DP which had negative genetic correlations with it. It is inferred that information on sip performance and other relatives coupled with better husbandry practices would be required to bring desirable improvement in these lactational performance traits.

Genetic Analysis of First Lactation Monthly Test Day Milk Yields, Peak Yield and 305 Days Milk Yield in Murrah Buffaloes

2020 ◽  
Author(s):  
Ekta Rana ◽  
Ashok Kumar Gupta ◽  
Avtar Singh ◽  
Atish Kumar Chakravarty ◽  
Saleem Yousuf ◽  
...  
Keyword(s):  
Maximum Likelihood ◽  
Milk Yield ◽  
Genetic Parameters ◽  
Correlation Method ◽  
Phenotypic Correlation ◽  
Murrah Buffaloes ◽  
National Dairy Research Institute ◽  
Genetic And Phenotypic Correlations ◽  
Breed Improvement ◽  
Selection Of

Background: The estimates of genetic parameters are useful in determining the appropriate method of selection that could further be implemented in the breed improvement programmes. The present study was, therefore, conducted to estimate the genetic parameters (heritability, genetic and phenotypic correlations) for monthly test day (TD) milk yields, peak yield (PY) and first lactation 305 days milk yield (FL305DMY) in Murrah buffaloes.Methods: Paternal half-sib correlation method was carried out by least-squares maximum likelihood programme to estimate genetic parameters of first lactation 4,209 and 408 records of monthly test day milk yield and peak yield, respectively, of 408 Murrah buffaloes (sired by 62 bulls) calved in between 1993 and 2017 at ICAR-National Dairy Research Institute, Karnal.Result: Heritability of FL305DMY and peak yield was estimated as 0.35±0.17 and 0.33±0.16, respectively. Heritability estimates for mid-lactation monthly test day milk yields were found to be moderate. Genetic correlation of monthly test day milk yields with FL305DMY was positive and highly significant for TD-4 to TD-9 and TD-11. Peak yield showed high genetic and phenotypic association with FL305DMY. High genetic and phenotypic correlation among monthly test day milk yields, peak yield and FL305DMY suggested that TD-4 to TD-9 and TD-11 test day milk yields and peak yield could be used for the selection of elite animals.

scholarly journals Editing and modeling of milk production data for genetic evaluation of Murrah buffaloes

2017 ◽  
Vol 52 (12) ◽  
pp. 1261-1267
Author(s):  
Andréa Carolina Santos de Souza ◽  
Marcos Paulo Gonçalves de Rezende ◽  
Paulo Luiz Souza Carneiro ◽  
Bárbara Machado Campos ◽  
Carlos Henrique Mendes Malhado
Keyword(s):  
Bayesian Inference ◽  
Milk Production ◽  
Genetic Parameters ◽  
Genetic Evaluation ◽  
The Other ◽  
Production Data ◽  
Lactation Period ◽  
Genetic Progress ◽  
Murrah Buffaloes ◽  
Heritability Estimates

Abstract: The objective of this work was to assess the effect of editing and modeling of milk production data for genetic evaluation of Murrah buffaloes. Six strategies for evaluating milk production were analyzed: observed milk production (OMP); adjustment of milk production data to 305 (MP305) and 270 (MP270) days of lactation; removal of the 5 (MP5%) and 10% (MP10%) shortest lactation periods; and milk production along the lactation period as linear covariate (MPCO). Genetic parameters were estimated using the Bayesian inference, with heritability estimates of 0.19 to 0.23 and repeatability estimates of 0.35 to 0.36. Sires classified by OMP were high correlated to those classified by the other models, however, correlations to MP270, MP305 and MPCO decreased when considering only the best 20% sires. OMP showed greater differences in absolute mean deviations when compared with MPCO, MP270 and MP305. The strategies of analysis had similar heritabilities and stabilities. However, changes in the ranking of sires with better classifications, due to overestimation of genetic values, as occurred in the models MP305, MP270 and MPCO, may lead to a decrease in the genetic progress of the herd.

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