Predicted Feed Efficiency index applied to Italian Holstein Friesian cattle population
نویسندگان
چکیده
منابع مشابه
Reproductive Performance for Holstein Friesian × Arsi and Holstein Friesian × Boran Crossbred Cattle
The study was carried out at Agarfa ATVET College dairy farm to evaluate the reproductive performance of Holstein Friesian× Arsi and Holstein Friesian ×Boran cattle. For the study, records compiled from 1983 to 2012 at the Agarfa dairy farm were used as original data. The effects of breed, bloodlines, season and parity on the reproductive traits were evaluated. Data were analyzed using the gene...
متن کاملCausal Relationships Between Milk Yield, Body Condition Score and Fertility in Italian Holstein Friesian Dairy Cattle
The aim of the study was to explore genetic relationship among milk yield, body condition score (BCS) and pregnancy status (PR) in Italian Holstein cows using a recursive effects model. Two recursive models and a multiple-trait model were compared in four different subsets of data. The antagonistic effect of milk yield on BCS and PR was confirmed, as well as the positive relationship between BC...
متن کاملEstimates of Genetic Parameters for Fertility Traits of Italian Holstein-friesian Cattle
Data from insemination and calving events of Italian Holstein cows and heifers collected from January 1996 until December 2002 were used to estimate phenotypic and genetic parameter for some fertility traits. A validation procedure of the data based on gestation length and information on service sire was used. According to these procedure, in Italy 75.9 % of the calvings are associated to servi...
متن کاملGenetic Association Analysis of Paratuberculosis Forms in Holstein-Friesian Cattle
A genetic susceptibility to Mycobacterium avium subsp. paratuberculosis (MAP) infections in ruminants has been longtime suspected to exist. Recently, natural infections in cattle have been reclassified into latent and patent forms based on histopathological findings and their associations with immunological and microbiological variables. This study aims to explore whether these newly defined ph...
متن کاملDifferential macrophage function in Brown Swiss and Holstein Friesian cattle
There is strong evidence that high yielding dairy cows are extremely susceptible to infectious diseases, and that this has severe economic consequences for the dairy industry and welfare implications. Here we present preliminary functional evidence showing that the innate immune response differs between cow breeds. The ability of macrophages (MØ) to kill pathogens depends in part on oxygen-depe...
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ژورنال
عنوان ژورنال: Acta fytotechnica et zootechnica
سال: 2020
ISSN: 1336-9245
DOI: 10.15414/afz.2020.23.mi-fpap.326-330