Non-conventional P sources for zebu cows in Brazil
نویسندگان
چکیده
منابع مشابه
Estimation of taurindicine hybridization of American Zebu cattle in Brazil.
Our objective was to estimate Bos primigenius taurus introgression in American Zebu cattle. One hundred and four American Zebu (Nellore) cattle were submitted to mtDNA, microsatellite and satellite analysis. Twenty-three alleles were detected in microsatellite analysis, averaging 4.6 ± 1.82/locus. Variance component comparisons of microsatellite allele sizes allowed the construction of tw...
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متن کاملDifferential expression of genes during mastitis in Holstein-Zebu crossbreed dairy cows.
Among the potential public health problems of animal production, infectious-contagious diseases stand out. Mastitis is among the main diseases affecting dairy cattle. One of the most promising options to reduce the problems caused by this disease, besides proper sanitary and management practices, is selective breeding of resistant animals. To shed light on the immune response mechanisms involve...
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Plasma progesterone concentrations were determined weekly during gestation averaging 283 +/- 2 d in Ethiopian zebu (Bos indicus) cows. Mean progesterone levels increased from 0.2 +/- 0.1 ng/ml at oestrus (service) to 3.1 +/- 1.6 ng/ml on d 7 and 8.1 +/- 2.1 ng/ml on d 21. Progesterone levels remained elevated throughout pregnancy. Hormone concentration differed significantly between cows (P les...
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ژورنال
عنوان ژورنال: Scientia Agricola
سال: 1995
ISSN: 0103-9016
DOI: 10.1590/s0103-90161995000100014