Appraisal of linear type traits in Sahiwal cattle

Dubey, Ashutosh; Mishra, Sharad; Khune, Vikas

doi:10.5958/j.0976-0555.48.3.055

Cited by 10 publications

(16 citation statements)

References 1 publication

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“…The present findings udder and teat traits are in agreement with the previous studies in Sahiwal cattle [18,19]. The means of udder and teat conformation traits showed that Sahiwal cows were having intermediate udder and teat measurements.…”

Section: Resultssupporting

confidence: 93%

“…Fore udder attachment had a significant positive correlation with udder depth (0.220) which is in agreement with [18]. A positive correlation was also reported between fore udder attachment and teat circumference (0.229) which is in contrast to [18] who reported a negative correlation between these traits. Rear udder height had significant positive correlations with udder length (0.687), udder width (0.693), udder circumference (0.752) and…”

Section: A C C E P T E D a R T I C L Esupporting

confidence: 68%

“…Udder depth had significant positive correlations with udder balance (0.248) and central ligament (0.243). But a negative correlation of udder depth with udder balance and udder cleft was reported by [18]. Udder balance had significant positive correlations with teat diameter (0.335) which is also supported by [18].…”

Section: A C C E P T E D a R T I C L Ementioning

confidence: 65%

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Principal component analysis of linear udder type traits and their relationship with milk yield and composition in indigenous Sahiwal cattle

Sinha¹,

Sinha²,

Kumari³

et al. 2020

Asian-Australas J Anim Sci

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Objective: The present study was aimed at (i) reduction in dimensionality using principal component analysis of 17 linear udder type traits to define those components which best represent udder and teat conformation of Indian Sahiwal cattle and (ii) to identify those components having strongest relationship with milk production traits in Sahiwal cattle. Methods: The Principal Component Analysis (PCA) included 17 linear udder type traits using the correlation matrix between the traits to ensure that all traits are standardized in the analysis. Bartlett's sphericity test was used to determine the degree of interrelations between variables and adequacy for use in factor analysis. The relationship of these principal components with milk production traits was analysed using the general linear model. Results: The means of linear udder type trait measurements varied between-2.21 for udder balance and 136.35 for udder circumference. Out of 17 principal components, six were extracted using Kaiser Rule criterion. The identified six components could explain 75.777% of the cumulative variance between the linear udder type traits. The communality ranged from 0.476 (rear udder width) to 0.967 (fore teat length) for all these 17 different udder type traits. A relation between first principal component and 305-day milk production was significant with a positive and non-significant effect of 305-day milk-fat yield (305 DF) and 305-day milk-protein yield (305 DP). Conclusion: Results of PCA suggest that the use of orthogonal synthetic variables principal component one (PC1), two (PC2) and three (PC3) provided a means of reduction in the number of linear udder type traits to be recorded in Sahiwal cattle which could be used in A c c e p t e d A r t i c l e explaining the whole udder and teat conformation. The PC1 can be used in selection as a means to explain the mammary system of better milk producing animals to be used in breeding programmes.

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Section: Resultssupporting

confidence: 93%

Section: A C C E P T E D a R T I C L Esupporting

confidence: 68%

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Principal component analysis of linear udder type traits and their relationship with milk yield and composition in indigenous Sahiwal cattle

Sinha¹,

Sinha²,

Kumari³

et al. 2020

Asian-Australas J Anim Sci

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“…The linear score for stature 6.88, chest width 5.30, rump width 5.09 and teat length 6.92 were slightly higher for Indian Sahiwal. Whereas the linear score for body depth 4.11, Rump Angle 4.27 for Indian Sahiwal were lower than current study findings (Dubey et al, 2014). Although the linear score for bone structure traits could not be compared across breeds because of breed differences.…”

Section: Discussioncontrasting

confidence: 53%

“…The linear score system has been developed for Nili Ravi Buffaloes ( Javed et al, 2013). The Sahiwal cattle in India have been appraised for linear type traits on a 9 point scale (Dubey et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Development of Linear Score System for Sahiwal Cows in Pakistan

Khan¹

2015

J. Anim. Health Prod.

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| Conformation is considered important to varying degree in different production indices besides milk. Linear scoring is the most recent method for describing a dairy cow in terms of conformation. The present study was designed with the objectives to develop linear score system for Sahiwal cattle. Body and udder measurements recorded on 310 Sahiwal cows were used for assigning linear score to each trait following the guidelines of International Committee on Animal Recording. The ASReml Version 2.0 was the statistical package used. The linear model included fixed effects of herd, parity, stage of lactation and the age of cow at classification as co-variable.

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Current status of research on linear type traits in Indian cattle and future strategies

Dahiya

Kumar

2020

Trop Anim Health Prod

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Appraisal of linear type traits in Sahiwal cattle

Cited by 10 publications

References 1 publication

Principal component analysis of linear udder type traits and their relationship with milk yield and composition in indigenous Sahiwal cattle

Principal component analysis of linear udder type traits and their relationship with milk yield and composition in indigenous Sahiwal cattle

Development of Linear Score System for Sahiwal Cows in Pakistan

Current status of research on linear type traits in Indian cattle and future strategies

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