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Biometria testicular de cordeiros em diferentes idades e alimentados com níveis crescentes de fibra em detergente neutro oriunda da forragem

Authors: Macedo Junior, Gilberto de Lima; Assis, Roberta Moura; Perez, Juan Ramón Olalquiaga; Paula, Oiti José; França, Patricia Maria; Almeida, Thaís Romano Vasconcelos;

Biometria testicular de cordeiros em diferentes idades e alimentados com níveis crescentes de fibra em detergente neutro oriunda da forragem

Abstract

O experimento foi conduzido na Universidade Federal de Lavras. Foram utilizados 64 cordeiros. Após o nascimento, os animais foram distribuídos em quatro tratamentos: Dieta A -8,67; Dieta B -17,34; Dieta C -26,01 e Dieta D -34,68% de FDN proveniente da forragem (FDNf) na dieta. Aos três dias de idade, os cordeiros foram separados de suas mães e passaram a receber substituto do leite de ovelha até o desaleitamento aos 55 dias. As dietas experimentais utilizadas foram isonitrogenadas, balanceadas para atender às exigências nutricionais de cordeiros em crescimento, exceto energia. Foram conduzidos quatro ensaios de digestibilidade das dietas utilizadas, para determinação da energia metabolizável (EM), em diferentes idades (43, 83, 123 e 173 dias de vida). As variáveis biométricas analisadas foram peso vivo, peso dos testículos, volume e circunferência escrotal. O delineamento experimental utilizado foi em blocos casualizados (DBC) em arranjo fatorial 4 x 4 (quatro níveis de FDNf na dieta e quatro idades de abate), com 4 repetições por tratamento. A estimativa da circunferência escrotal através do peso vivo mostrou ser mais eficiente do que em função da idade. A predição do peso e das dimensões dos testículos através da circunferência escrotal mostrou ser mais eficiente do que através da idade e do peso vivo. Os animais que receberam as rações com menos fibra de origem forrageira, isto é, com maiores quantidades de energia, apresentaram melhores resultados de biometria testicular em relação aos que consumiram menores quantidades de energia.

Keywords

puberdade, energia, puberty, sheep, testículo, Reprodução Animal, S, ovinos, Agriculture, SF1-1100, testicle, Animal culture, consumo, intake., intake, energy

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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