Alternative somatic cell count traits to improve mastitis resistance in Canadian Holsteins
نویسندگان
چکیده
منابع مشابه
Predicting Mastitis Resistance Breeding Values from Somatic Cell Count Indicator Traits
A new breeding value estimation procedure for mastitis traits has been implemented in the Dutch/Flemish dairy genetic evaluation. This breeding value estimation uses incidences of subclinical mastitis together with five indicator traits derived from test day somatic cell counts to predict the breeding value for resistance against subclinical and clinical mastitis (SCM and CM, resp.). The mastit...
متن کاملSelection on somatic cell score to improve resistance to mastitis in the United States.
Increased genetic susceptibility to mastitis has accompanied the rapid genetic increase in milk yield, and genetic selection for mastitis resistance should be considered. Somatic cell score is recommended as an indicator trait to achieve genetic improvement for mastitis resistance. Heritability of somatic cell score is around 10%, and genetic correlation between somatic cell score and clinical ...
متن کاملRelationship of Somatic Cell Count and Mastitis: An Overview
Mastitis is characterized by physical, chemical and bacteriological changes in the milk and pathological changes in the glandular tissue of the udder and affects the quality and quantity of milk. The bacterial contamination of milk from the affected cows render it unfit for human consumption and provides a mechanism of spread of diseases like tuberculosis, sore-throat, Q-fever, brucellosis, lep...
متن کاملBovine Mastitis Pathogens: Prevalence and Effects on Somatic Cell Count
© 2012 Carrillo-Casas and Miranda-Morales, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Bovine Mastitis Pathogens: Prevalence and Effects on Somatic Cel...
متن کاملAlternative Use of Somatic Cell Counts in Genetic Selection for Mastitis Resistance
Various alternatives in analyzing somatic cell counts (SCC) as indirect indicator of resistance of mastitis are discussed by integrating knowledge of the dynamics of the infection and statistical methods used in quantitative genetics and epidemiological research. This is done by (1) defining various measures of SCC, (2) identifying non genetic factors of SCC variation, and (3) proposing a new a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2012
ISSN: 0022-0302
DOI: 10.3168/jds.2011-4731