Hematological profile of beef cattle with divergent residual feed intake, following feed deprivation
نویسندگان
چکیده
منابع مشابه
Molecular basis for residual feed intake in beef cattle.
Feed provision is one of the greatest costs of beef production and, with the increasing costs of feed, will remain so for the foreseeable future. Improvement in efficiency has the potential to not only increase profits for cattle producers, but also to decrease the environmental footprint of beef cattle production. Both are important in addressing the challenges of increasing feed costs and lan...
متن کاملSmall intestine histomorphometry of beef cattle with divergent feed efficiency
BACKGROUND The provision of feed is a major cost in beef production. Therefore, the improvement of feed efficiency is warranted. The direct assessment of feed efficiency has limitations and alternatives are needed. Small intestine micro-architecture is associated with function and may be related to feed efficiency. The objective was to verify the potential histomorphological differences in the ...
متن کاملPosters CATTLE RESIDUAL FEED INTAKE CANDIDATE GENES
One option that can be used to select cattle for improving feed efficiency is to select for genes affecting residual feed intake. Previous studies using two groups of cattle, the Trangie Angus residual feed intake (RFI) selection line cattle and the Davies Jersey x Limousin gene mapping cattle have identified five chromosomal regions or QTL that have significant effects on net feed efficiency. ...
متن کاملRelationship of glucocorticoids and hematological measures with feed intake, growth, and efficiency of finishing beef cattle.
The objective of this experiment was to determine the association of glucocorticoids and markers for immune status in finishing beef steers and heifers with DMI, growth, and efficiency. Steers ( = 127) and heifers ( = 109) were individually fed a finishing ration for 84 d with BW measured every 21 d. Blood samples were collected via jugular venipuncture for metabolite (glucose and lactate) and ...
متن کاملCandidate genes and single nucleotide polymorphisms associated with variation in residual feed intake in beef cattle.
The candidate gene approach was used to identify genes associated with residual feed intake (RFI) in beef steers. The approach uses prior knowledge of gene functions to predict their biological role in the variation observed in a trait. It is suited to identify genes associated with complex traits where each gene has a relatively small effect. First, positional candidate genes were identified w...
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ژورنال
عنوان ژورنال: Pesquisa Agropecuária Brasileira
سال: 2011
ISSN: 0100-204X
DOI: 10.1590/s0100-204x2011000900019