High Records Contrasted with Unselected Records and with Average Records as a Basis for Selecting Cows

Berry, J. C.; Lush, Jay L.

doi:10.3168/jds.s0022-0302(39)92918-8

Cited by 11 publications

(3 citation statements)

References 5 publications

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“…This prediction is mainly based on the correlation be tween records within cows. Usually, the correlation between nonconsecutive records is somewhat lower than those between two consecutive ones (Berry andLush, 1939: Barr andVan Vleck, 1963;Butcher and Freeman, 1969).…”

Section: Literature Reviewmentioning

confidence: 99%

“…For practice and convenience, Berry and Lush (1939), and Lush (1945) sug gested that the accurate way of estimating a cow's producing ability is to use all the previous information a cow has had and assume a common correla tion between any two records. The term, moat probable producing ability, was first used by Lush (1945) and defined to be the herd average plus , .…”

Section: Literature Reviewmentioning

confidence: 99%

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Estimation of Holstein Cows' milk producing ability

Chyr

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Estimation of Holstein Cows' milk producing ability

Chyr

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“…It is notable that this is still an acceptable estimate. Berry and Lush (1939) estimated the correlations between different lactations using 115 Holstein cows and their daughters with production records made in the Herd Improvement Registry (H.I.R.) program.…”

Section: Correlations Of Milk and Milk Fat Productionmentioning

confidence: 99%

Genetic differences in maturity in dairy cattle

Taylor

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The heritability of milk yield and fat percentage in the Friesian cattle in the province of Friesland

El-Shimy

1957

Zeitschrift für Tierzüchtung und Züchtungsbiologie

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The writer wishes to express his thanks to all the people of the "Friesch Rundvee Stamboek", for providing facilities for this research. The encouragements of Dr. E.T. Roelofs and Ir. A.H. Nubd are not neglectable. The efforts of Prof. Ir. W. de Jong, are greatly appreciated for his supervision and help during the course of this investigation. The writer is also greatly indebted to Dr. Th. de Groot, and Ir. K. Bosnia, for their excellent guidance and criticism. Cordial thanks to every body else who has contributed in any way to this research work. CONTENTS CHAPTER I Introduction page 9 CHAPTER II Review of literature 14 A. Milk yield 14 B. Fat percentage 18 C. Fat yield 20 D. Other characters concerning milking abilities 22 CHAPTER III Material #. 26 Soil and feeding 27 Conditions of research 28 CHAPTER IV Methods used 33 CHAPTER V Results 35 A. Milk yield 35 B. Fat percentage 41 CHAPTER VI General discussion 47 1. Age of cow at calving 47 2. Length of lactation period 49 3. Month of calving 53 4. Effect of feeding conditions 54 5. Effect of temperature 56 6. Number of records needed 57 Heritability estimates 64

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High Records Contrasted with Unselected Records and with Average Records as a Basis for Selecting Cows

Cited by 11 publications

References 5 publications

Estimation of Holstein Cows' milk producing ability

Estimation of Holstein Cows' milk producing ability

Genetic differences in maturity in dairy cattle

The heritability of milk yield and fat percentage in the Friesian cattle in the province of Friesland

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