Research Article

Relationship between Conformation Traits and Lifetime Production Efficiency of Cows

Table 1

Mean scores for conformation traits and phenotypic correlations between conformation traits and production indicators of the cows.

Traits Mean Variation indexYield milk (kg)Length of ( years) No. of calving
I lactationII lactationIII lactationPerformance lifelifeproductive

General score for type and conformation75,94,70,39xx0,28xx0,24xx0,22xx0,07xx0,08xx0,05x
Frame size11,0810,90,29xx0,22xx0,15xx0,09xx−0,03−0,03−0,05x
Type and conformation10,847,70,35xx0,23xx0,19xx0,14xx0,010,01−0,02
Legs and feet15,045,50,010,06xx0,050,12xx0,09xx0,11xx0,11xx
Udder39,015,80,32xx0,21xx0,21xx0,21xx0,10xx0,11xx0,08xx
Hip height137,33,10,28xx0,23xx0,14xx0,09xx−0,03−0,03−0,05x

Features detailed
Body depth6,615,20,21xx0,08xx0,09xx0,02−0,04−0,05x−0,06xx
Chest width5,124,50,20xx0,17xx0,07xx0,03−0,06xx−0,07xx−0,07xx
Rump angle5,420,90,02−0,00−0,02−0,00−0,00−0,000,00
Rump width5,327,70,09xx0,06xx0,05−0,01−0,04−0,06x−0,06xx
Claws4,828,30,10xx0,09xx0,09xx0,07xx0,010,010,01
Rear leg set—rear view5,622,90,18xx0,16xx0,13xx0,10xx0,010,030,02
Fore udder attachment 5,425,7−0,020,030,020,09xx0,11xx0,10xx0,10xx
Rear udder attachment5,024,40,15xx0,08xx0,10xx0,09xx0,040,05x0,02
Medial suspensory ligament5,227,70,06xx0,010,06x0,09xx0,050,08xx0,09xx
Udder placement5,728,2−0,20xx−0,09xx−0,050,06x0,14xx0,14xx0,14xx
Udder width5,421,60,40xx0,26xx0,19xx0,14xx−0,01−0,01−0,03
Teat placement4,529,40,06xx0,030,09xx0,02−0,000,00−0,01
Teat length4,826,9−0,06xx−0,09xx−0,11xx−0,07xx−0,02−0,03−0,02
Dairy character5,522,20,30xx0,15xx0,17xx0,13xx0,030,040,01

Significance at P 0.01, xsignificance at P 0.05.