TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência animal brasileira (Online) |
Texto Completo: | https://revistas.ufg.br/vet/article/view/18820 |
Resumo: | The experiment was conducted at the Federal University of Lavras. We used 64 lambs, which, after birth, were divided into four treatments: Diet A - 8.67; Diet B - 17.34, Diet C - 26.01 and Diet D - 34.68% neutral detergent fiber from forage (NDFf) in the diet. At three days of age, lambs were separated from their mothers and began receiving sheep milk replacer until weaning at 55 days. The experimental diets were isonitrogenous, formulated to meet the nutritional requirements of growing lambs, except for energy. Four digestibility diet essays were conducted for determining of metabolizable energy (ME) at different ages (43, 83, 123 and 173 days of life). The biometric variables analyzed were weight, testis weight, scrotal circumference and volume. The experimental design was in randomized blocks (DBC), in a 4 x 4 factorial arrangement (four levels of dietary NDFf and four slaughter ages), with 4 replicates per treatment. The estimation of scrotal circumference by weight proved to be more efficient than in function of age. The prediction of the size and weight of the testes through scrotal circumference was more efficient than by the age and body weight. Animals fed diets with less fiber from forage, that is, with greater amount of energy, showed better results of testis biometry compared to the animals fed smaller amounts of energy.KEYWORDS: energy; intake; puberty; sheep; testicle. |
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TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGEBIOMETRIA TESTICULAR DE CORDEIROS EM DIFERENTES IDADES E ALIMENTADOS COM NÍVEIS CRESCENTES DE FIBRA EM DETERGENTE NEUTRO ORIUNDA DA FORRAGEMAnimal ReproductionReprodução AnimalThe experiment was conducted at the Federal University of Lavras. We used 64 lambs, which, after birth, were divided into four treatments: Diet A - 8.67; Diet B - 17.34, Diet C - 26.01 and Diet D - 34.68% neutral detergent fiber from forage (NDFf) in the diet. At three days of age, lambs were separated from their mothers and began receiving sheep milk replacer until weaning at 55 days. The experimental diets were isonitrogenous, formulated to meet the nutritional requirements of growing lambs, except for energy. Four digestibility diet essays were conducted for determining of metabolizable energy (ME) at different ages (43, 83, 123 and 173 days of life). The biometric variables analyzed were weight, testis weight, scrotal circumference and volume. The experimental design was in randomized blocks (DBC), in a 4 x 4 factorial arrangement (four levels of dietary NDFf and four slaughter ages), with 4 replicates per treatment. The estimation of scrotal circumference by weight proved to be more efficient than in function of age. The prediction of the size and weight of the testes through scrotal circumference was more efficient than by the age and body weight. Animals fed diets with less fiber from forage, that is, with greater amount of energy, showed better results of testis biometry compared to the animals fed smaller amounts of energy.KEYWORDS: energy; intake; puberty; sheep; testicle.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.PALAVRAS-CHAVE: consumo; energia; ovinos; puberdade; testículo.Universidade Federal de Goiás2014-12-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionResearchAvaliado por paresPesquisa Científicaapplication/pdftext/htmlhttps://revistas.ufg.br/vet/article/view/1882010.1590/cab.v15i4.18820Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 15 No. 4 (2014); 384-399Ciência Animal Brasileira / Brazilian Animal Science; v. 15 n. 4 (2014); 384-3991809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/vet/article/view/18820/17634https://revistas.ufg.br/vet/article/view/18820/17645Macedo Junior, Gilberto de LimaAssis, Roberta MouraPerez, Juan Ramón OlalquiagaPaula, Oiti JoséFrança, Patricia MariaAlmeida, Thaís Romano Vasconcelosinfo:eu-repo/semantics/openAccess2014-12-23T23:51:13Zoai:ojs.revistas.ufg.br:article/18820Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:55:53.870476Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE BIOMETRIA TESTICULAR DE CORDEIROS EM DIFERENTES IDADES E ALIMENTADOS COM NÍVEIS CRESCENTES DE FIBRA EM DETERGENTE NEUTRO ORIUNDA DA FORRAGEM |
title |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE |
spellingShingle |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE Macedo Junior, Gilberto de Lima Animal Reproduction Reprodução Animal |
title_short |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE |
title_full |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE |
title_fullStr |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE |
title_full_unstemmed |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE |
title_sort |
TESTICULAR BIOMETRICS OF LAMBS AT DIFFERENT AGES FED WITH DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER FROM FORAGE |
author |
Macedo Junior, Gilberto de Lima |
author_facet |
Macedo Junior, Gilberto de Lima Assis, Roberta Moura Perez, Juan Ramón Olalquiaga Paula, Oiti José França, Patricia Maria Almeida, Thaís Romano Vasconcelos |
author_role |
author |
author2 |
Assis, Roberta Moura Perez, Juan Ramón Olalquiaga Paula, Oiti José França, Patricia Maria Almeida, Thaís Romano Vasconcelos |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Macedo Junior, Gilberto de Lima Assis, Roberta Moura Perez, Juan Ramón Olalquiaga Paula, Oiti José França, Patricia Maria Almeida, Thaís Romano Vasconcelos |
dc.subject.por.fl_str_mv |
Animal Reproduction Reprodução Animal |
topic |
Animal Reproduction Reprodução Animal |
description |
The experiment was conducted at the Federal University of Lavras. We used 64 lambs, which, after birth, were divided into four treatments: Diet A - 8.67; Diet B - 17.34, Diet C - 26.01 and Diet D - 34.68% neutral detergent fiber from forage (NDFf) in the diet. At three days of age, lambs were separated from their mothers and began receiving sheep milk replacer until weaning at 55 days. The experimental diets were isonitrogenous, formulated to meet the nutritional requirements of growing lambs, except for energy. Four digestibility diet essays were conducted for determining of metabolizable energy (ME) at different ages (43, 83, 123 and 173 days of life). The biometric variables analyzed were weight, testis weight, scrotal circumference and volume. The experimental design was in randomized blocks (DBC), in a 4 x 4 factorial arrangement (four levels of dietary NDFf and four slaughter ages), with 4 replicates per treatment. The estimation of scrotal circumference by weight proved to be more efficient than in function of age. The prediction of the size and weight of the testes through scrotal circumference was more efficient than by the age and body weight. Animals fed diets with less fiber from forage, that is, with greater amount of energy, showed better results of testis biometry compared to the animals fed smaller amounts of energy.KEYWORDS: energy; intake; puberty; sheep; testicle. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-23 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Avaliado por pares Pesquisa Científica |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/vet/article/view/18820 10.1590/cab.v15i4.18820 |
url |
https://revistas.ufg.br/vet/article/view/18820 |
identifier_str_mv |
10.1590/cab.v15i4.18820 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/vet/article/view/18820/17634 https://revistas.ufg.br/vet/article/view/18820/17645 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 15 No. 4 (2014); 384-399 Ciência Animal Brasileira / Brazilian Animal Science; v. 15 n. 4 (2014); 384-399 1809-6891 1518-2797 reponame:Ciência animal brasileira (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Ciência animal brasileira (Online) |
collection |
Ciência animal brasileira (Online) |
repository.name.fl_str_mv |
Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
||revistacab@gmail.com |
_version_ |
1799874787687792640 |