Results 61 to 70 of about 38,290 (306)

Genetic Relationships Among Resilience, Fertility and Milk Production Traits in Crossbred Dairy Cows Performing in Sub‐Saharan Africa

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Change in climate over the past years and its impact on the environment have necessitated the inclusion of resilience traits in the breeding objectives of dairy cattle. However, the relationship between resilience and other traits of economic importance in dairy production is currently not well known. This study examined the genetic parameters
R. D. Oloo, R. Mrode, C. C. Ekine‐Dzivenu, J. M. K. Ojango, J. Bennewitz, G. Gebreyohanes, A. M. Okeyo, M. G. G. Chagunda   +7 more
wiley   +1 more source

Feed restriction of F1 Holstein × Zebu cows in the final third of lactation modifies intake, nutrient digestibility, feeding behavior, and performance

Revista Brasileira de Zootecnia, 2019
The objective of this study was to evaluate the effect of quantitative feed restriction level on nutrient intake and digestibility, nitrogen balance, efficiency and feeding behavior, and productive performance of F1 Holstein × Zebu cows in late lactation.
P. Santana, V. R. Rocha Júnior, J. Ruas, F. P. Monção, Luana Alcântara Borges, J. Rigueira, Joyce Cipriana Pacheco Ramos, V. M. Gomes   +7 more
semanticscholar   +1 more source

On the Identifiability of Genetic Parameters for Growth in Mice With a Massively Deep Pedigree

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT In models with direct and maternal genetic effects, structural features of the data are a potential source of bias and low accuracy of estimates for genetic covariance parameters. One of the well‐known reasons for such poor practical identifiability is the lack of dams with own observations.
X. Ding, A. A. Musa, N. Reinsch
wiley   +1 more source

Madagascar's grasses and grasslands:anthropogenic or natural? [PDF]

, 2016
Grasses, by their high productivity even under very low pCO2, their ability to survive repeated burning and to tolerate long dry seasons, have transformed the terrestrial biomes in the Neogene and Quaternary.
Bosser J, Brummitt RK, Clayton WD, Dransfield S, Drukker DM, ESRI, Faramalala MH, Humbert H, Humbert H, Kellogg EA, Koechlin J, Lewis BA, Maddison WP, Moat J, Morat P, Muasya AM, Nanjarisoa OP, Perrier de la Bâthie H, R Development Core Team, Vollesen K, Vollesen K, Vorontsova MS   +21 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

Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains

Revista Colombiana de Ciencias Pecuarias, 2019
Background: Rehydration of grains, such as corn and sorghum, is used to increase nutrient absorption. However, the effect of this practice on meat quality is poorly understood.
Fabiano A. Ferreira, Mario L. Chizzotti, Germán D. R. Zamudio, Mauricio M. Estrada, Marcos V. C. Pacheco, Breno C. Silva, Sebastião C. Valadares-Filho, Rafael T. S. Rodrigues   +7 more
doaj   +1 more source

Trace element nutrition in the tropical zebu cattle type : lessons from the Gilgel Gibe catchment, Ethiopia [PDF]

, 2014
In the tropics, cattle are majorly dependent on natural pastures growing on poor soils and as a result prone to trace element deficiencies. This work investigated several aspects of trace element nutrition in zebu (Bos indicus) cattle, the most widely ...
Dermauw, Veronique
core   +3 more sources

Caractérisation morphobiométrique du zébu Djelli du Niger

International Journal of Biological and Chemical Sciences, 2019
Le zebu peul (zebu Djelli) est l’une des races bovines qui constitue les cinq groupes (5) du cheptel bovin du Niger. Il est tres apprecie de par ses aptitudes zootechniques, mais son elevage est plus localise dans les departements et communes riveraines ...
Zakari Idde Yahaya, G. Dayo, Mani Maman, M. Issa, H. Marichatou   +4 more
semanticscholar   +1 more source

Genomic Analysis of Taurine and Indicine Ancestry in the Montana Tropical Composite Population

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT The Montana Tropical cattle, a Taurine and Indicine composite, were developed in Brazil since 1994 and were based on crossing four biological types of cattle: zebu (mainly Nelore), tropical adapted taurine (mainly Senepol and Romosinuano), British taurine (mainly Angus) and continental taurine (as Charolais, Simental and Limousin).
Camila Alves dos Santos, El Hamidi Hay, Elisangela Chicaroni de Mattos Oliveira, Rafael Espigolan, José Bento Sterman Ferraz, Tiago do Prado Paim   +5 more
wiley   +1 more source

Estudo genético quantitativo de características de carcaça e perímetro escrotal utilizando inferência Bayesiana em novilhos nelore

Bioscience Journal, 2010
Objetivou-se com este estudo avaliar o método de amostragem de Gibbs (GS) como ferramenta para se estimar os componentes de (co)variância e parâmetros genéticos para características de carcaça e reprodutivas: área de olho de lombo (AOL); espessura de ...
Vanessa Barbosa, Cláudio Ulhoa Magnabosco, José Benedito de Freitas Trovo, Carina de Ubirajara Faria, Dyomar Toledo Lopes, Marco Antônio de Oliveira Viu, Raysildo Barbosa Lôbo, Mariana Márcia Santos Mamede   +7 more
doaj