Results 71 to 80 of about 46,786 (294)

Associations between strain, herd size, age at first calving, culling reason and lifetime performance characteristics in Holstein-Friesian cows.

open access: yesAnimal, 2017
Cow longevity and lifetime performance traits are good indicators of breeding effectiveness and animal welfare. They are also interrelated with the economics of dairy herd. Unfortunately, a high milk yield is often associated with deteriorated cow health
Krzysztof Adamczyk   +3 more
semanticscholar   +1 more source

A Study of Dairy Heifer Rearing Practices from Birth to Weaning and Their Associated Costs on UK Dairy Farms [PDF]

open access: yes, 2015
There are many inputs into the dairy replacement herd which impact not only on the cost of rearing heifers from birth to first calving, but also on their future longevity and production potential.
Boulton, A C, Rushton, J, Wathes, D C
core   +1 more source

Compensation Response to Hepatic Gluconeogenesis via β‐Hydroxybutyrylation of FBP1 and PCK1 in Dairy Cows

open access: yesAnimal Research and One Health, EarlyView.
(1) Kbhb modification of FBP1 and PCK1 is involved in regulation of the gluconeogenesis pathway. (2) Kbhb of FBP1 and PCK1 is catalyzed by p300 and removed by HDACs. (3) BHB induced an increase in the enzymatic activity of FBP1 and PCK1 through Kbhb modification at the K43 site of FBP1 and the K191 site of PCK1.
DingPing Feng   +6 more
wiley   +1 more source

Integrating Genomic Selection and Genome-Wide Association Study to Enhance Reproductive Traits in Thai Swamp Buffalo

open access: yesAnimals
Reproductive inefficiencies, such as delayed age at first calving (AFC) and a prolonged calving interval (CI), hinder the productivity of Thai swamp buffaloes.
Rawinan Lomngam   +7 more
doaj   +1 more source

Age of First Calving and Subsequent Fertility and Survival in Holstein Friesian Cattle

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The aim of the study was to investigate the relationship between age at first calving (AFC) and subsequent fertility and survival up to third calving in Holstein Friesian heifers.
Constantin Găvan   +2 more
doaj  

Genotype × environment interaction for fertility and milk yield traits in Canadian, Mexican and US Holstein cattle

open access: yesSpanish Journal of Agricultural Research, 2017
The objective of this study was to evaluate genotype × environment  interaction (G×E) between Canada, the United States and Mexico for fertility and milk yield traits using genetic correlations between countries estimated from genetic evaluations of ...
Hugo H. Montaldo   +4 more
doaj   +1 more source

Genetic relationships between calving date, calving interval, age at first calving and type traits in beef cattle [PDF]

open access: yes, 2011
In this paper the genetic relationships between major reproductive traits in beef cattle (Calving Date, Calving Interval and Age at First Calving) and type traits have been estimated to evaluate the usefulness of type classification in predicting ...
Díez, Jorge   +5 more
core  

Overview of Encapsulated Lysine and Methionine and Their Impacts on Transition Cow Performance and Health

open access: yesAnimal Research and One Health, EarlyView.
The transition period in dairy cows, spanning 3 weeks before and after calving, is a critical phase characterized by increased nutrient demands, reduced dry matter intake (DMI), and elevated risk of metabolic disorders such as negative nutrient balance (NNB), lipolysis, proteolysis, and oxidative stress.
Mohammed S. Seleem   +5 more
wiley   +1 more source

NON GENETIC FACTORS EFFECT ON REPRODUCTIVE PERFORMANCE AND PREWEANING MORTALITY FROM ARTIFICIALLY AND NATURALLY BRED IN BALI CATTLE [PDF]

open access: yesJournal of the Indonesian Tropical Animal Agriculture, 2011
The aim of this study was to evaluate effect of non genetic factors on reproductive performance of Bali cattle. Data on reproduction performance were collected from Breeding Centre of Bali Cattle in Denpasar-Bali.
A. Gunawan   +3 more
doaj  

Analysis of culling probability in dairy buffalo using survival models

open access: yesAnimal, 2010
In order to contribute to the genetic breeding programs of buffaloes, this study aimed to determine the influence of environmental effects on the stayability (ST) of dairy female Murrah buffalo in the herd. Data from 1016 buffaloes were used.
P.M. Galeazzi   +5 more
doaj   +1 more source

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