Somatic Cell Counts and Infection Rates for Cows of Varying Somatic Cell Count in Initial Test of First Lactation
نویسندگان
چکیده
منابع مشابه
Genetic Parameter Estimates for Lactation Curve Parameters, Milk Yield, Age at First Calving, Calving Interval and Somatic Cell Count in Holstein Cows
The objective of this study was to estimates the genetic and environmental components for the lactation curve parameters, milk yield, age at first calving (AFC), calving interval (CI) and somatic cell count (SCC) in Iranian Holstein cows. The dataset consisted of 210625 test day records from 25883 cows with milk yield in the first parity recorded from July 2002 to September 2007 in a total of 9...
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The present study was carried out to investigate the effects of somatic cell counts (SCC), differential SCC (macrophage (MAC), lymphocyte (LYM) and polymorphonuclear leukocytes (PMN)), number and stage lactation on milk composition in camel and cow milk. Camel milk appeared to contain significantly (P
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Akbar Pirestani,*, Mohammad Javad Bagheri, Sayed Mahdi Hashemi, Amir Hossine Asgarishahi Department of Animal Science, Khorasgan (Isfahan) Branch, Islamic Azad University, Isfahan, Iran *Corresponding author: Email: [email protected] Received: 20 July 2013 Accepted: 21 November 2013 ABSTRACT This study was conducted to evaluate the impact of Se+Vit E and Cu inject...
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Genetic and non-genetic correlations of the average somatic cell score (SCS) at different stages oflactation (100, 150, 200, 305 and 365 days in milk) with lactation performance were estimated based on thefirst lactation records of Iranian Holstein calving during 2000 to 2009. (Co) variance components wereestimated using derivative-free REML based on multiple traits animal models. The estimated...
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108 milk samples were collected to study the relationship of somatic cell counts (SCC) and milk composition with milking methods and udder hygiene from 27 Holstein Frisian (HF) dairy cows having moderate milk yield in mid-lactation and parity of 2 to 4, at Khyber Pakhtunkhwa Agricultural University Peshawar dairy farm. All animals were randomly distributed into three categories on the basis of ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1986
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(86)80437-4