Genetic Parameters of Milk Yield in Bulgarian Dairy Synthetic Population Sheep
نویسندگان
چکیده
منابع مشابه
Genetic parameters affecting 180-days standardised milk yield, test-day milk yield and lactation length in Spanish Assaf (Assaf.E) dairy sheep
A total of 42,197 records of test-day milk yield (TDY) and 7654 lactations from 3854 individuals belonging to the Spanish Assaf Assaf.E) breed were analysed using univariate and multivariate models to estimate genetic parameters affecting TDY, total milk ield standardised to 180 days (MY180) and lactation length (LL) in order to asses their possibilities of use in the selection scheme f the Ass...
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Genetic parameters were estimated for total milk yield of a Sicilo-Sarde flock (INRAT (Tunisian National Institute of Agronomic Research) Experiment Station, Béja) for 881 lactations. Total milk yields were calculated from 8220 bimonthly test day records using the Fleischmann method. Animals included in the relationship matrix were 363 ewes and 83 rams. Estimates were from the use of univariate...
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In sheep, the traditional chemical control of gastrointestinal nematode (GIN) parasites with anthelmintics has led to the widespread development of anthelmintic resistance. The selection of sheep with enhanced resistance to GIN parasites has been suggested as an alternative strategy to develop sustainable control of parasite infections. Most of the estimations of the genetic parameters for shee...
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ژورنال
عنوان ژورنال: International Journal of Current Research and Academic Review
سال: 2018
ISSN: 2347-3215
DOI: 10.20546/ijcrar.2018.604.001