Zobrazeno 1 - 10
of 23
pro vyhledávání: '"G.A. Oliveira Junior"'
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 10, Pp 8177-8188 (2022)
ABSTRACT: Dairy farmers are motivated to ensure cows become pregnant in an optimal and timely manner. Although timed artificial insemination (TAI) is a successful management tool in dairy cattle, it masks an animal's innate fertility performance, lik
Externí odkaz:
https://doaj.org/article/2f46c1babb9f42a1a85ef712516f332f
Autor:
Christine F. Baes, Kerry Houlahan, G.A. Oliveira Junior, L. Alcantara, Colin Lynch, Flavio S Schenkel
Publikováno v:
Oliveira Junior, G A; Schenkel, F S; Alcantara, L; Houlahan, K; Lynch, C; Baes, C F (2021). Estimated genetic parameters for all genetically evaluated traits in Canadian Holsteins. Journal of dairy science, 104(8), pp. 9002-9015. American Dairy Science Association 10.3168/jds.2021-20227
Genetic improvement is a crucial tool to deal with the increasing demand for high quality, sustainably produced dairy. Breeding programs are based on genetic parameters, such as heritability and genetic correlations, for economically important traits
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e477739b34eeeea9ecb4e9d7b4db25c
https://boris.unibe.ch/159197/1/1-s2.0-S0022030221005749-main.pdf
https://boris.unibe.ch/159197/1/1-s2.0-S0022030221005749-main.pdf
Publikováno v:
Oliveira Junior, G A; Schaeffer, L R; Schenkel, F; Tiezzi, F; Baes, C F (2021). Potential effects of hormonal synchronized breeding on genetic evaluations of fertility traits in dairy cattle: A simulation study. Journal of dairy science, 104(4), pp. 4404-4412. American Dairy Science Association 10.3168/jds.2020-18944
About 30% of producers use hormone protocols to synchronize ovulation and perform timed artificial insemination (AI) in Canada. Days from calving to first service (CTFS) and first service to conception (FSTC) become masked phenotypes leading to biase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f17f233599e1604847b4dd7be94e3a7d
https://boris.unibe.ch/159193/1/1-s2.0-S0022030221001430-main.pdf
https://boris.unibe.ch/159193/1/1-s2.0-S0022030221001430-main.pdf
Publikováno v:
Lynch, C; Oliveira Junior, G A; Schenkel, F S; Baes, C F (2021). Effect of synchronized breeding on genetic evaluations of fertility traits in dairy cattle. Journal of dairy science, 104(11), pp. 11820-11831. American Dairy Science Association 10.3168/jds.2021-20495
Estrus detection has become more difficult over the years due to decreases in the estrus expression of high-producing dairy cows, and increased herd sizes and animal density. Through the use of hormonal synchronization protocols, also known as timed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45110410cc072348eb092b3263e2da45
Autor:
Haja N. Kadarmideen, John B. Cole, B. C Perez, Miguel Henrique de Almeida Santana, Dorian J. Garrick, José Bento Sterman Ferraz, Ricardo Vieira Ventura, G.A. Oliveira Junior, M. L. Santana Junior, Juliano Coelho da Silveira, Gianluca Mazzoni
Publikováno v:
Journal of Animal Science. 95:4796-4812
Zebu animals () are known to take longer to reach puberty compared with taurine animals (), limiting the supply of animals for harvest or breeding and impacting profitability. Genomic information can be a helpful tool to better understand complex tra
Autor:
Haroldo H. R. Neves, Miguel Henrique de Almeida Santana, José Bento Sterman Ferraz, José Fernando Garcia, Heidge Fukumasu, G.A. Oliveira Junior, Saulo da Luz e Silva, Yuri Tani Utsunomiya, Pâmela A. Alexandre, Luiz Lehmann Coutinho, Rodrigo da Costa Gomes, Paulo Roberto Leme, Ricardo Vieira Ventura, Marina de Nadai Bonin
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The aim of this study was to identify candidate genes and genomic regions associated with ultrasound-derived measurements of the rib-eye area (REA), backfat thickness (BFT) and rumpfat thickness (RFT) in Nellore cattle. Data from 640 Nellore steers a
Autor:
Heidge Fukumasu, José Bento Sterman Ferraz, Marina de Nadai Bonin, G.A. Oliveira Junior, Haroldo H. R. Neves, Yuri Tani Utsunomiya, Francisco José de Novais, Rodrigo da Costa Gomes, Pamela A. Alexandre, Miguel Henrique de Almeida Santana, Luiz Lehmann Coutinho, José Fernando Garcia
Publikováno v:
Genetics and Molecular Research. 14:5229-5233
Weight gain is a key performance trait for beef cat- tle; however, attention should be given to the production costs for better profitability. Therefore, a feed efficiency trait based on per- formance can be an interesting approach to improve perform
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