Within-Cow Regression of Milk-Energy Yield on Age and Liveweight

Gaines, W.L.; Davis, H. P.; Morgan, R. F.

doi:10.3168/jds.s0022-0302(47)92350-3

Cited by 9 publications

(1 citation statement)

References 4 publications

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“…W 0 ' 75 ). A year later Gaines (264) produced further evidence in support of his original claim and stated that the weight of experimental evidence distinctly supported the formula involving body weight rather than the one put forward by Kleiber & Mead involving metabolic body size, and in a still more recent paper Gaines and his colleagues (265) again maintain the importance of using body weight in obtaining a formula to express what Brody terms 'lactational drive'.…”

Section: Anatomical and Belated Aspectsmentioning

confidence: 78%

Section A. Physiology of dairy cattle. I. Reproduction and lactation

Smith

1950

Journal of Dairy Research

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Section: Anatomical and Belated Aspectsmentioning

confidence: 78%

Section A. Physiology of dairy cattle. I. Reproduction and lactation

Smith

1950

Journal of Dairy Research

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Milk-secretion studies with New Zealand Romney ewes. Parts III and IV

1949

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Milk production is of fundamental and practical importance to the sheep industry. Reports indicate considerable differences in milking ability between ewes of different breeds as well as between ewes of the same breed.Milking capacity of ewes is dependent on both nutritional and hereditary factors, probably the nutritional factor being the more important. Under commercial farming conditions milk yield might affect not only the growth rates of ‘fat’ lambs and the quality of their carcases, but eventually also the constitution of the ewe lambs retained in the flocks for breeding purposes. It therefore appeared that milking ability of Romney ewes in New Zealand would be a matter worthy of investigation.

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A study of the lactation and growth of hill sheep in their native environment and under lowland conditions

Owen

1957

J. Agric. Sci.

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1. A method is described suitable for the estimation of the milk yield of sheep under natural grazing conditions.2. The yields obtained from Welsh Mountain sheep in two environments are shown.3. A close but diminishing relationship is shown to exist between the milk yield of the ewe and the growth of the lamb. Evidence is given of the effect of milk yield at later stages.4. The estimation of the ewe's milk yield from the weight of the young lamb is discussed. These estimates are used in conjunction with actual milk records in the present study.5. The ewe's milk yield is shown to be significantly related to nutrition, body weight, udder size and the lamb's birth weight.6. The relation of milk yield to weight gain during lactation, fleece weight and fleece type were mainly non-significant.7. From the limited data available, it seems that milk yield has a fairly high repeatability and heritability.

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Within-Cow Regression of Milk-Energy Yield on Age and Liveweight

Cited by 9 publications

References 4 publications

Section A. Physiology of dairy cattle. I. Reproduction and lactation

Section A. Physiology of dairy cattle. I. Reproduction and lactation

Milk-secretion studies with New Zealand Romney ewes. Parts III and IV

A study of the lactation and growth of hill sheep in their native environment and under lowland conditions

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