منابع مشابه
Body condition score and live-weight effects on milk production in Irish Holstein-Friesian dairy cows.
The objective of the present study was to quantify the relationships among body condition score (BCS; scale 1 to 5), live weight (WT) and milk production in Irish Holstein-Friesian spring calving dairy cows. Data were from 66 commercial dairy herds during the years 1999 and 2000. The data consisted of up to 9886 lactations with records for BCS or WT at least once pre-calving, or at calving, nad...
متن کاملAssociation between body condition score and live weight in pasture-based Holstein-Friesian dairy cows.
The objective was to quantify the strength of the relationship between body condition score (BCS) and live weight (LW) in pasture-based Holstein-Friesian dairy cattle, and to determine the kg LW per unit BCS. A total of 26021 test-day records with information on both BCS (1-10 scale, where 1 is emaciated and 10 is obese) and LW across 1110 lactations from one research farm were used in the anal...
متن کاملAn Investigation on Body Condition Score, Body Weight, Calf Weight and Hematological Profile in Crossbred Dairy Cows Suffering from Dystocia
Received: Revised: Accepted: December 29, 2009 May 17, 2010 October 14, 2010
متن کاملCirculating metabolic hormones in different metabolic states of high producing Holstein dairy cows
Background: Information regarding the metabolic hormones in different metabolic states of high producing dairy cows can aid high producing herds to manage and resolve the metabolic and production problems. Furthermore, it can be considered as a tool to evaluate metabolic status of dairy cows. Herd managers can also evaluate the energy input-output relationships by assessing the metabolic profil...
متن کاملAssociation of IGF-I gene polymorphisms with milk yield and body size in Chinese dairy goats
The association of IGF-I gene polymorphisms with certain traits in 708 individuals of two Chinese dairy-goat breeds (Guanzhong and Xinong Saanen) was investigated. Polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) and DNA sequencing methods were employed in screening for genetic variation. Two novel mutations were detected in the 5'-flanking region and in intron 4 of ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1946
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(46)92477-0