Development of Replacement Heifers using Combinations of Three Forage Types and Feed Supplements (with or without Broiler Litter) [PDF]
, 1997 The proper management of replacement heifers is an essential component of successful cow/calf operations. The level of management and nutrition applied to replacement heifers as calves and yearlings can impact their subsequent reproductive performance ...
Brown, A. H., Jr. +4 more
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Contribution of Fat Adjustment to Residual Feed Intake Estimation in Beef Cattle
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Including fat thickness as a covariate in the regression model used to calculate residual feed intake (RFI) could help preserve carcass quality traits, such as marbling, flavour and juiciness, by accounting for variation in fat deposition.
Larissa Bordin Temp +8 more
wiley +1 more source
Comparative genetic analysis of frequentist and Bayesian approach for reproduction, production and life time traits showing favourable association of age at first calving in Tharparkar cattle. [PDF]
Anim Biosci, 2023 Yadav N, Mukherjee S, Mukherjee A.
europepmc +1 more source
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Recent studies suggest that variations in milk yield during lactation can serve as a metric for assessing individual resilience, with minimum fluctuations reflecting greater resilience in cows. With automatic milking systems, multiple records can be obtained from many cows on a daily basis. Given that animals are continually exposed to a range
M. Agyiri +7 more
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Relationship Between Milk Yield and Age at Calving in First Lactation
Journal of Dairy Science, 1976 Abstract Precise, unbiased evaluation of sires for milk yield is dependent on appropriate consideration of herd-year-season and age at calving. Age-adjustment procedures presume that the effect of age at calving on milk yield is environmental and the same for all sires, herds, and years.
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Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Miller Teodoro +7 more
wiley +1 more source
Two approaches to account for genotype-by-environment interactions for production traits and age at first calving in South African Holstein cattle. [PDF]
Genet Sel Evol, 2022 Ducrocq V +5 more
europepmc +1 more source
Journal of Central European Agriculture, 2005 In this research, the relationships of between body measurements such as heart girth, body length, height at withers and chest depth at six month of ages of calves and their age at fi rst calving and the fi rst lactation 305- day milk yield were investigated.
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Studies on restricted suckling in dual purpose and dairy breed cattle in Mexico [PDF]
, 2005 The aim of this thesis was to investigate the effects of rearing calves by restricted suckling (RS) compared to artificial rearing (AR) in dual purpose and dairy breed cattle in Mexico, milked once or three times a day, respectively.
Fröberg, Sofie
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