Genetic relationship of yield and fertility in dairy cattle

Hansen, Leslie B

doi:10.31274/rtd-180815-4679

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Review Of Literature Days Open Present Lactation1

Days Dry1

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“…Although rather large genetic correlations between yield and fertility have been reported, Hansen (1981) found the corresponding phenotypic correlations to be much lower. Everett et al (1966) reported that phenotypic correlations between yield and fertility were near zero.…”

Section: Review Of Literature Days Open Present Lactationmentioning

confidence: 81%

“…Cows dry longer than 180 days were set equal to 180 days to limit uncommonly long dry and where terminal records were included using the 22 judgement process developed by Laben et al (1982). Ex cluding terminal records made no discernable difference in the results of Hansen (1981). The decision was made to include terminal records in the present study.…”

Section: Days Drymentioning

confidence: 99%

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