Phenotypic Correlations among Milk Yield and Chemical Composition per Normal Lactation in Romanian Black and White Breed

Scientific Papers Animal Science and Biotechnologies

Stelian Acatincăi¹  Iulian Tripon¹  Silvia Erina¹  Simona Baul¹  George Gabriel Răducan¹  Ludovic Toma Cziszter¹  Dinu Gavojdian¹ 

[1] Banat’s University of Agricultural Sciences and Veterinary Medicine from Timişoara, Faculty of Animal Sciences and Biotechnologies;

关键词: chemical components;    milk quantity;    phenotypic correlations;    romanian black and white breed;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this study we have established phenotypic correlations between quantitative and qualitative indices of normallactation milk production in Romanian Black and White breed for 125 lactations. The correlation coefficients andtheir statistical significance were calculated with STATISTICA program. Between the amount of milk and chemicalcomponents from milk there were values of correlation coefficient over 0.900. Also, between these characters was avery significant positive correlation (p<0.001). The correlation between the quantity of milk and the indices of milkquality (fat percentage, protein percentage, lactose percentage, percentage of dry defatted matter and percentage oftotal solids) varies between r = -0.046 percentage of fat and r =0.126 between amount of milk and percentage of drydefatted milk. Those values are statistically insignificant (p>0.05). Between the percentage values of fat, protein,lactose, fat dry matter and total dry matter were obtained highly significant correlations (p <0.001), ranging fromr=0.510 between fat percentage and the percentage of lactose and r=0.883 between the percentage of defatted drymatter and total solids.

【 授权许可】

Unknown