Productive longevity of white-and-black cows of different genotypes CSN3 and DGAT1

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Table 7.

The share and reliability of the influence of various factors on the longevity and life-long milk yield of cows

No	Factor	Duration of use		Lifetime milk yield
No	Factor	η², %	F_actual	η², %	F_actual
1	Origin of the servicing bulls	19.1	3.6^***	13.3	2.9^*
2	Linear affiliation	12.4	6.1^***	10.3	5.7^***
3	CSN3 genotype	3.1	2.9	2.5	2.1
4	DGAT1 genotype	3.8	3.4	6.2	4.5^*

Note:

– P <0.05;

^**

–P <0.01;

^***

–P <0.001

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