Genetic and phenotypic relationships among endocrine and traditional fertility traits and production traits in Holstein-Friesian dairy cows [PDF]
, 2002 The objective of this study was to estimate the heritability of a number of traditional and endocrine fertility traits in addition to d-56 predicted milk yield (MY56), and the genetic and phenotypic correlations between these traits.
Royal, M.D. +2 more
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Rearing conditions and lifetime milk revenues in Swedish dairy cows [PDF]
, 2011 Associations between replacement heifer rearing conditions and lifetime milk revenues were studied throughout the productive life of Swedish dairy cows.
Svensson, Catarina, +8 more
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Associations between the K232A polymorphism in the diacylglycerol-O-transferase 1 (DGAT1) gene and performance in Irish Holstein-Friesian dairy cattle [PDF]
, 2010 peer-reviewedSelection based on genetic polymorphisms requires accurate quantification of the effect or association of the polymorphisms with all traits of economic importance. The objective of this study was to estimate, using progeny performance data
McCabe, Matthew +5 more
core +1 more source
, 1999 Energy balance is a function of dry-matter intake (DMI), live weight and milk yield over a certain time period. To investigate potential strategies to use genetic selection for the improvement of the negative energy balance, genetic co-variances were ...
Veerkamp, R. F. +2 more
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GENETIC AND PHENOTYPIC CORRELA TIONS FOR SOME ECONOMIC TRAITS IN DAIRY CATTLE
Pakistan Veterinary Journal, 2001 Data on lactation records of 1113 purebred Sahiwal and 784 Holstein Friesian X Sahiwal (FS) and Jersey X Sahiwal (JS) crossbred cows kept at the Livestock Production Research Institute (LPRl), Bahadurnagar, District Okara and Qadirabad District Sahiwal ...
Manzoor Ahmad, J. H. J. van der Werf1 and Khalid laved2
doaj
Improving Milk Yield Performance of Crossbred Cattle in North-Eastern States of India [PDF]
Crossbreds hold the solution to the milk-deficit problem of North-Eastern states of India. The proportion of crossbred cattle in the region is 7.54 per cent (3.46 per cent of the country) as against 13.33 per cent for the country as a whole. However, the
Paul, Debabrata, Chandel, B.S.
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ПРОУЧВАНЕ ВЪРХУ МЛЕКОДОБИВА НА СИНТЕТИЧНА ПОПУЛАЦИЯ ОВЦЕ ЗА МЛЯКО В РАЙОНА ОКОЛО ГРАД ПЛОВДИВ
Животновъдни науки, 2014 The objectives of this paper were to study of milk yield of dairy sheep crosses in Plovdiv region in Bulgaria and influence of environmental factors affecting milk yield.
ПЕТЯ ЖЕЛЯЗКОВА +3 more
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EFFECT OF PROTEIN UNDEGRADED SUPPLEMENTATION ON PRODUCTION AND COMPOSITION OF MILK IN DAIRY COWS [PDF]
, 2010 This research was aimed to examine the effect of undegraded protein supplementation on nutrients intake, production and milk composition in dairy cows. The purpose of this research was to provide information on the undegraded protein supplementation to
Agus, A, Widyobroto, BP, Budhi, SPS
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Associating milk β-hydroxybutyrate dynamics in early lactation with milk production of dairy cows
Journal of Dairy Science: Hyperketonemia is a common problem in transition cows. However, the association between hyperketonemia and milk yield is ambiguous. In this study, we investigated the association between automatically measured milk β-hydroxybutyrate (mBHB) dynamics in ...
T. Chanchaidechachai +4 more
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