Short communication: Repeatability of intravenous glucose tolerance test traits in young Holstein-Friesian cattle
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چکیده
منابع مشابه
Short Communication Effect of THI on milk coagulation properties of Holstein-Friesian dairy cattle
The objective of this study was to evaluate the effect of temperature-humidity index (THI) on the milk coagulation properties of Holstein-Friesian dairy cattle from northeast part of Italy. A total of 592 individual milk samples from six dairy herds were evaluated. The milk coagulation properties traits analysed were milk rennet coagulation time and curd firmness, as well as the fat, protein, a...
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The objective of the study was to estimate the genetic relationships between detailed reproductive traits derived from ultrasound examination of the reproductive tract and a range of performance traits in Holstein-Friesian dairy cows. The performance traits investigated included calving performance, milk production, somatic cell score (i.e., logarithm transformation of somatic cell count), carc...
متن کاملGenetic and non-genetic parameters of replacement rate component traits in Holstein Friesian cattle
Records on 3092 pregnancies distributed over a period of 24 years (1986 to 2010) were used to estimate genetic and non genetic parameters of threshold traits in Holstein Friesian. Parity, season and year of calving were included in the model to estimate their effect on replacement traits. A total of 105 sires' records were used to study the genetic component of the characters. The overall avera...
متن کاملGenetics of milk yield and fertility traits in Holstein-Friesian cattle on large-scale Kenyan farms.
Purebred Holstein-Friesian cows are the main exotic breed used for milk production on large, medium, and small farms in Kenya. A study was undertaken on seven large-scale farms to investigate the genetic trends for milk production and fertility traits between 1986 and 1997 and the genetic relationships between the traits. This involved 3,185 records from 1,614 cows, the daughters of 253 sires. ...
متن کاملIntravenous Glucose Tolerance Test in Normal Persons
as a supplement to the oral method has been pointed out by many workers. Moreover, the possibility of error in the result of oral method due to diminished absorption has been shown by Beeler, Bryan, Cathcart and Fitz (1922). The flat blood sugar curve obtained by Thaysen (1929) after the oral administration of glucose, as has been shown by the author, is due to the diminished absorption of gluc...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2019
ISSN: 0022-0302
DOI: 10.3168/jds.2018-15617