Determination of Effective Factors for Milk Yield of Brown Swiss Cattle Using by Path Analysis

被引：0

作者：

Tahtali, Yalcin ^{[1
]}

Sahin, Aziz ^{[1
]}

Ulutas, Zafer ^{[1
]}

Sirin, Emre ^{[1
]}

Abaci, Samet Hasan ^{[2
]}

机构：

[1] Gaziosmanpasa Univ, Ziraat Fak, Zootekni Bolumu, TR-60240 Tasliciftlik, Tokat, Turkey

[2] Eskisehir Osmangazi Univ, Ziraat Fak, Zootekni Bolumu, TR-26160 Baglar Yerleskesi, Eskisehir, Turkey

来源：

KAFKAS UNIVERSITESI VETERINER FAKULTESI DERGISI | 2011年 / 17卷 / 05期

关键词：

Correlation; Path analysis; Path coefficient; Partial regression coefficient;

D O I：

暂无

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

This study was carried out to calculate path coefficients of the effects of lactation length, 305 day milk yield, calving age and calving interval. For this purpose, some milk yields and fertility traits of 810 Brown swiss cows that were raised between 1990-2005 years in Konuklar State Farm are used. Coefficient of correlation is between 305 day milk yields and lactation length were estimated as 0.75 and 0.65, respectively. Percentages of direct effects of factors on actual milk yield were 17.3% for lactation length, 1.00% for 305 day milk yield. Indirect effect of lactation length and 305 day milk yield on actual milk yield were calculated as 299.29 and 1.00 respectively. In that case, direct and indirect effect for calving interval and calving age were low.

引用

页码：859 / 864

页数：6

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