Relationships Among Udder Height, Age, and Milk Production
نویسندگان
چکیده
منابع مشابه
Relationships Among Herd Life, Milk Production, and Calving Interval
Whether to select for longer life in the herd or shorter calving interval depends on the genetic and phenotypic relationships among herd life, amount of milk in first lactation, and calving interval. Herd life and average calving intmwal are essentially phenotypically uncorrelated. The phenotypic and genetic correlations of herd life and milk in first lactation ranged from .19 to .25 and from ....
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Udder capacity and udder shape were scored on 3- to 10-yr-old cows from a large Hereford herd. Udder capacity was scored from 1 (small) and 5 (large) and udder shape was scored from 1 (balanced, udder level with ground) to 5 (unbalanced, funnel-shaped udder). Data were analyzed within age of cow for udder capacity scores from 1 to 4 and for udder shape scores from 1 to 3 because of the limited ...
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A method of finding the parameters pertaining to one of the variables of milk production, constituent production, and constituent percentage when the parameters pertaining to the two other variables are known is presented. The method is based on the expectation of products of random variables. This method and the delt~ approximation method are compared to sampling estimates from simulated data....
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The unhygienic handling practices in traditional camel milk production and in the informal camel milk trade represent serious obstacles for the introduction of modern dairy processing and marketing. The successful adaptation of pastoral subsistence production to the needs of an improved camel milk production and marketing system will depend, to a large extent, on safeguarding the milk quality a...
متن کاملUdder Size in Relation to Milk Secretion
The results herein presented furnish exact critical evidence for the conclusion that the most of the milk is present as such in the udder of dairy cattle at the time of milking. The amount of milk which may be secreted during milking cannot, on the basis of these results, be over 20 per cent of the milk yield of the cow. The results show clearly that the size of the udder measures closely the a...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1963
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(63)88993-6