Results 111 to 120 of about 8,538 (245)

Genetic Evaluation for Functional Longevity in Nellore Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Stayability (STAY) presents limitations in capturing genetic variability among animals with varying calving records up to 76 months of age. Furthermore, because STAY is measured late in life (typically at 6 years of age), it inherently prolongs generation intervals.
Gabriele de Souza Silva Fernandes, Dalila Ribeiro dos Santos, Arione Augusti Boligon, Mário Luiz Santana, Gilberto Romeiro de Oliveira Menezes, Denise Rocha Ayres, Annaiza Braga Bignardi, Rodrigo Junqueira Pereira   +7 more
wiley   +1 more source

Associations between preweaning calf feeding behaviors with age at first calving and lactational performance using an automatic calf feeder. [PDF]

JDS Commun, 2023
Swartz TH, Petersson-Wolfe CS.
europepmc   +1 more source

Estimation of Genetic Parameters and Genetic Trends for Growth and Reproductive Traits in Mashona Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Mashona cattle are an indigenous Sanga cattle breed from Zimbabwe, used for beef production and known for their mothering ability and adaptation to harsh tropical environments. Growth and reproductive traits are key determinants of efficiency in beef production.
Maxman Gomo, Luiz F. Brito, Artur O. Rocha, Carina Visser   +3 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

Genetic and Phenotypic Correlations Among Growth, Disease Occurrence, and Reproductive Performance From Calf to Heifer in Girolando Dairy Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT The Girolando breed, a cross between Holstein (Bos taurus) and Gir (Bos indicus), is the primary choice for dairy production in Brazilian tropical regions, as it combines high productive potential with adaptation to the tropical environment.
Laura B. da C. Pereira, Viviane A. Ligori, Hinayah R. de Oliveira, Eula R. Carrara, Carolina A. de S. D. Muniz, Edson L. de A. Ribeiro, Lenira E. F. Zadra   +6 more
wiley   +1 more source

Association between age at first calving, first lactation traits and lifetime productivity in Murrah buffaloes. [PDF]

Anim Biosci, 2022
Tamboli P, Bharadwaj A, Chaurasiya A, Bangar YC, Jerome A.   +4 more
europepmc   +1 more source

STUDY ON THE AGE AT FIRST CALVING AND THE LONGEVITY OF BEEF COWS

Journal of Central European Agriculture, 2006
The age at fi rst calving, the life span and the longevity of cows have great importance in cattle husbandry, especially in beef cow husbandry, because the cost of raising weaned calves depends largely on how early cows calve and how long they remain in production. If cows are productive extendedly and raise more progeny, specifi c costs of raising per
Ildikó DÁKAY, Dávid MÁRTON, Krisztián KELLER, Attila FÖRDÖS, Márton TÖRÖK, Ferenc SZABÓ   +5 more
openaire   +3 more sources

The variability of giraffe skull morphology

Journal of Anatomy, EarlyView.
What does giraffe skull shape tell us about their development and evolution? Abstract Giraffe (Giraffa spp.) are among the most unique and charismatic extant animals, largely due to their distinct morphology. The evolutionary and developmental origin of ossicones is a key factor in giraffid biology, yet other features building their characteristic head
Nikolaos Kargopoulos, Jesús Marugán‐Lobón, Anusuya Chinsamy‐Turan, Bernard R. Agwanda, Michael Butler Brown, Stephanie Fennessy, Sara Ferguson, Rigardt Hoffman, Fredrick Lala, Arthur Muneza, Ogeto Mwebi, Moses Otiende, Alice Petzold, Sven Winter, Abdoul Razack Moussa Zabeirou, Julian Fennessy   +15 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, Cadet A, Patry C, van der Westhuizen L, van Wyk JB, Neser FWC.   +5 more
europepmc   +1 more source

RELATIONSHIPS BETWEEN BODY MEASUREMENT OF DAIRY CALVES AT SIX MONTH OF AGES AND AGE AT FIRST CALVING AND MILK PRODUCTION

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.
openaire   +4 more sources