Results 211 to 220 of about 686,282 (415)

THE EFFECTS OF U.S. MEAT PACKING AND LIVESTOCK PRODUCTION TECHNOLOGIES ON MARKETING MARGINS AND PRICES [PDF]

Real livestock prices and farm-wholesale marketing margins have steadily declined over the past 20 years. Studies examining the causes of these declines have generally failed to account directly for technological change in livestock production and red ...
Brester, Gary W., Marsh, John M.
core   +1 more source

Genomic Evaluation in Nellore Cattle for Reproductive Traits: Multiple Ways to Account for Missing Pedigrees

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Missing pedigrees are a common problem in most populations. Animals with unknown ancestors are usually treated as founders; however, this can underestimate inbreeding, not properly account for different base populations, and bias breeding values.
Larissa Temp, Gabriel Gubiani, Ludmilla Brunes, Claudio Magnabosco, Fernando Bussiman, Jorge Hidalgo, Daniela Lourenco, Fernando Baldi   +7 more
wiley   +1 more source

Beef cattle production functions and economic optima in beef cattle rations

, 1962
G. P. Roehrkasse
openalex   +2 more sources

Effect of Season, Sex and Breed on the Thyroxine Secretion Rate of Beef Cattle and a Comparison with Dairy Cattle

, 1963
G.W. Pipes, T.R. Bauman, J. R. Brooks, J. E. Comfort, C. W. Turner   +4 more
openalex   +1 more source

Economical Evaluation through Gross Profit and Cash Flow in Different Beef Cattle Systems in Rio Grande Do Sul [PDF]

Beef cattle production is suffering numerous difficulties in productive and economical terms in the state of Rio Grande do Sul. Expanding new markets, competition with other meats, external competition through imported Mercosul beef, new growth and ...
de Oliveira, Carolina Balbe, Silveira, Vicente Celestino Pires, Vargas, Adriana Ferreira Da Costa, Viana, Joao Garibaldi Almeida   +3 more
core   +1 more source

Genetic Heterogeneity of Residual Variance for Foot Score Traits in American Angus Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Foot conformation is one of the main breeding goals in recent beef cattle breeding programs because it directly affects productivity, economic losses, animal welfare and longevity. Genetic heterogeneity of residual variance can be used to improve production uniformity in animal breeding programs because recent studies have shown that residual ...
Sabrina T. Amorim, Kelli J. Retallick, André Garcia, Noelia Ibañez‐Escriche, Gota Morota   +4 more
wiley   +1 more source

DEMAND FOR BEEF FROM CATTLE ADMINISTERED GROWTH HORMONES OR FED GENETICALLY MODIFIED CORN: A COMPARISON OF CONSUMERS IN FRANCE, GERMANY, THE UNITED KINGDOM, AND THE UNITED STATES [PDF]

This study compares consumer valuations of beef steaks from cattle produced without growth hormones or genetically modified corn in France, Germany, the United Kingdom, and the United States.
Fox, John A., Lusk, Jayson L., Roosen, Jutta   +2 more
core   +1 more source

Genetic Parameters of Resilience Indicators Across Growth in Beef Heifers and Their Associations With Weight, Reproduction, Calf Performance and Pre‐Weaning Survival

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT In tropical extensive beef cattle systems, heifers raised on pasture are exposed to various environmental challenges that affect their growth and reproductive performance during the first breeding. Resilience indicators derived from deviations in longitudinal traits can quantify the magnitude of these challenges and the ability of an animal to
Gustavo R. D. Rodrigues, Júlia P. S. Valente, Vanessa T. Rezende, Luis F. C. Araújo, João B. Silva Neto, Lúcio F. M. Mota, Mário L. Santana, Roberta C. Canesin, Sarah F. M. Bonilha, Lucia G. Albuquerque, Maria E. Z. Mercadante, Joslaine N. S. G. Cyrillo   +11 more
wiley   +1 more source

Improvement of beef cattle through breeding methods

, 1968
William Harold Smith, J. O. Akinokun, R.R. Schalles   +2 more
openalex   +2 more sources

Comparative Analysis of Recursive and Alternative Modelling Approaches Considering Body Condition Score for Genetic Evaluation of Mature Cow Weight

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Mature cow size, often defined by mature cow weight (MWT), height (MHT) and body condition score (BCS), is crucial to cow‐calf profitability, maintenance efficiency and reproductive performance. Although MWT and MHT are often included in national cattle evaluations by many breed organisations, BCS adjustments are applied less consistently ...
Ayooluwa O. Ojo, Henrique A. Mulim, Andre Garcia, Kelli Retallick‐Riley, Stephen P. Miller, Hinayah R. Oliveira   +5 more
wiley   +1 more source