Saanen Oğlaklarının Canlı Ağırlıkları Üzerine Vücut Ölçümleri İçin Path Analizi

Önder, Hasan; Abacı, Samet Hasan

doi:10.9775/kvfd.2014.12500

Cited by 5 publications

(4 citation statements)

References 8 publications

(8 reference statements)

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“…Our association findings on path analysis do not coherent with the results reported by Önder and Abacı. (2015) on path analysis for body measurements on weaning weight of Saanen kids, contrary may be due to use of different breed.…”

Section: Discussioncontrasting

confidence: 99%

Application of Biometric Traits for Predicting Weaning Weight of Dorper Sheep using Path Analysis

2021

Int J Vet Sci

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The current study was conducted to examine the relationship between weaning weight and biometric traits viz; heart girth (HG), rump height (RH), body length (BL), withers height (WH) and sternum height (SH) and, also to determine direct and indirect influence of biometric traits on weaning weight (WW) of Dorper sheep. Dorper sheep lambs (females=23, males=16) were used. Pearson’s correlation and path analysis were used for data analysis. Female correlation results indicated that WW had a positive highly significant correlation with HG (r=0.66), BL (r=0.66) and RH (r=0.55), and positively statistical correlation with WH (r=0.45) at P<0.05 whereas in males, results demonstrated that WW had a negative highly significant correlation with HG (r=-0.51) at P<0.05. Path analysis results on females showed that BL (0.34) had the greatest direct effect on WW while HG (0.31) had the highest indirect contribution on WW, males’ results indicated that HG (0.97) had the highest direct contribution on WW while WH (0.69) had the greatest indirect effect on WW. Current study information will assist rural farmer who lack weighing scales to predict weight of their animals for various reasons such as for breeding and marketing purposes and again study outcome will help sheep breeders to select direct and indirect traits influencing weaning weight for improvement.

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Section: Discussioncontrasting

confidence: 99%

Application of Biometric Traits for Predicting Weaning Weight of Dorper Sheep using Path Analysis

2021

Int J Vet Sci

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“…There are many studies using path analysis in sheep and goat breeding [3,[15][16][17] , poultry farming [7,[18][19][20] and cattle breeding [21][22][23][24][25] and other livestock breeding [26,27] .…”

Section: Discussionmentioning

confidence: 99%

Karacabey Merinosu Koyunlarında Canlı Ağırlık İle Vücut Ölçüleri Arasındaki İlişkilerin Path Analizi Yaklaşımı İle İncelenmesi

Ambarcioğlu¹,

Kaya²,

Özen³

et al. 2017

Kafkas Univ Vet Fak Derg

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Citation of This ArticleAmbarcıoğlu P, Kaya U, Özen D, Gürcan İS: An examination of the relationships between live weight and body measurements in Karacabey Merino sheep through the path analysis approach. Kafkas Univ Vet Fak Derg, 23 (6): 857-863, 2017. DOI: 10.9775/kvfd.2017 Abstract Direct and indirect effects of some of the body measurements on Karacabey Merino Sheep's live weights were estimated using a path analysis in this study. When setting the path model, live weight, back length, body length, shin girth, chest depth, rump width and chest girth measurements of 249 Karacabey Merino sheep of which ages varied between 1 and 4 years were utilized. According to the two-equation causal path model, the body measurement which had the highest direct effect on live weight was chest girth, and it was also shown that chest depth and rump width had indirect effects. It was found that the model expressed a good fit according to the goodness of fit criteria. Consequently, it was revealed that the body measurement which had the greatest contribution to the model set for live weight estimation was chest girth and causal relations between the independent variables variable could be shown with the path analysis. Keywords: Path analysis, Path diagram, Karacabey Merino sheep, Live weight Karacabey Merinosu Koyunlarinda Canlı Ağırlık İle Vücut Ölçüleri Arasındaki İlişkilerin Path Analizi Yaklaşımı İle İncelenmesi ÖzetBu çalışmada Karacabey Merinosu koyunlarının canlı ağırlıkları üzerine, bazı vücut ölçülerinin doğrudan ve dolaylı etkileri path analizi kullanılarak tahmin edilmiştir. Path modeli kurulurken, 1-4 yaş arası 249 baş Karacabey Merinosu koyununun canlı ağırlık, sırt uzunluğu, vücut uzunluğu, incik çevresi, göğüs derinliği, sağrı genişliği ve göğüs çevresi ölçümlerinden yararlanılmıştır. İki denklemli nedensel path modeline göre canlı ağırlık üzerinde doğrudan etkisi en yüksek vücut ölçüsünün göğüs çevresi olduğu belirlenmiş, göğüs derinliği ve sağrı genişliğinin dolaylı etkileri de gösterilmiştir. Modelin uyum iyiliği kriterlerine göre iyi uyumu ifade ettiği de tespit edilmiştir. Sonuç olarak; canlı ağırlık tahmini için oluşturulan modele en yüksek katkıyı sağlayan ölçünün göğüs çevresi olduğu, ayrıca path analizi ile bağımlı değişkene ek olarak bağımsız değişkenler arasındaki nedensel ilişkilerin de gösterilebileceği ortaya konmuştur.

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“…The main purpose of animal breeding is to genetically improve populations of livestock and thus produce more efficient production from future populations (Onder and Abaci, 2015;Sen et al, 2019). In general, newborn lambs with higher birth weight are considered as selection criteria that have higher birth weight are selected as breeding material for the future population (Sen et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Estimating of Birth Weight Using Placental Characteristics in The Presence of Multicollinearity

Tirink

2020

Black Sea Journal of Engineering and Science

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In this study, it was aimed to compare the performance of proposed estimators in the presence of multicollinearity that will be used in regression analysis as an alternative to Least Squares. Birth weight was estimated by using placental features such as sex, placental efficiency, total cotyledon numbers, large cotyledon weight, medium cotyledon weight, small cotyledon weight, large cotyledon number, medium cotyledon number, small cotyledon number, large cotyledon width, medium cotyledon width, small cotyledon width, large cotyledon length, medium cotyledon length, small cotyledon length, large cotyledon depth, medium cotyledon depth, small cotyledon depth for Bafra sheep breed. In the presence of multicollinearity, more reliable models can be obtained by using some estimator. The performances of the Ridge and Liu estimators, which are suggested methods for this situation, were compared. MSE, RMSE, rRMSE, MAPE, R 2 , and AIC were used as model comparison criteria. As a result of, in the presence of multicollinearity; Liu estimator is recommended as an alternative method to Least Squares.

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Saanen Oğlaklarının Canlı Ağırlıkları Üzerine Vücut Ölçümleri İçin Path Analizi

Cited by 5 publications

References 8 publications

Application of Biometric Traits for Predicting Weaning Weight of Dorper Sheep using Path Analysis

Application of Biometric Traits for Predicting Weaning Weight of Dorper Sheep using Path Analysis

Karacabey Merinosu Koyunlarında Canlı Ağırlık İle Vücut Ölçüleri Arasındaki İlişkilerin Path Analizi Yaklaşımı İle İncelenmesi

Estimating of Birth Weight Using Placental Characteristics in The Presence of Multicollinearity

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