Effects of the gossypol at different levels in diet of heifers Nelore
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Brazilian Journal of Veterinary Medicine |
Texto Completo: | https://rbmv.org/BJVM/article/view/277 |
Resumo: | ABSTRACT. Piau-Junior R., Ribeiro E. de A., Quessada A.M., Ribeiro E. de A. & de Almada A.F.B. [Effects of the gossypol at different levels in diet of heifers Nelore.] Efeitos do gossipol em diferentes níveis na dieta de novilhas Nelore. Revista Brasileira de Medicina Veterinária, 38(Supl.1):120-126, 2016. Programa de Pós-Graduação em Ciência Animal, Universidade Paranaense, Campus Umuarama, Praça Mascarenhas de Moraes, 4282, Zona III, PR 480, S/n, Km 14, Umuarama, PR 87502-210, Brasil. E-mail: piau@unipar.br The use of cottonseed in ruminant feed has aroused interest because it is an important energy and protein source as supplemental fodder. However, the cotton and your by-products have an anti-nutritional factor, the gossypol, which may have a toxic effect on ruminants. In Brazil there is still a lack of studies on animals, about the toxicity of the gossypol, and most studies with cotton in ruminant feed is performed in dairy cows. Thus, the objective of this study was to observe the effect of the addition of gossypol in the diet of Nelore heifers. 15 heifers were used receiving a daily diet consisting of 12 kg of silage with elephant grass and 100g of mineral supplement. The animals were divided into three groups. In the first group (A, control), the diet contained no gossypol; in the second group (B) was added in the diet, 900 ppm free gossypol; and in the third group (C), the diet contained 1500 ppm of free gossypol. Prior to administration of the diets and after the experiment began, animals were weighed biweekly (0, 15, 30, 45, 60 and 75 days, total of six weighings). Elapsed 10 weeks the animals were slaughter, and liver, heart and spleen were weighed, and samples of these organs were collected for preparation of histological sections. The animals were examined daily and there was no clinical signs of intoxication. In relation to weight gain, there was no statistical difference between the treated animals and the control group. At necropsy, gross changes were not seen in heart, spleen, liver, kidney and lungs. The weight of liver, heart and spleen showed no differences between groups. There were no clinical signs of renal injury but it was observed histopathologically discrete renal injury. The other organs showed no histological lesions. It was concluded that heifers may be fed with by-products of the cotton without showing clinical poisoning, since the level of gossypol does not exceed 1,500 ppm. |
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Effects of the gossypol at different levels in diet of heifers NeloreEfeitos do gossipol em diferentes níveis na dieta de novilhas NeloreAlgodãoalimentaçãobovinotoxicidadeCattlecottonfeedingtoxicityABSTRACT. Piau-Junior R., Ribeiro E. de A., Quessada A.M., Ribeiro E. de A. & de Almada A.F.B. [Effects of the gossypol at different levels in diet of heifers Nelore.] Efeitos do gossipol em diferentes níveis na dieta de novilhas Nelore. Revista Brasileira de Medicina Veterinária, 38(Supl.1):120-126, 2016. Programa de Pós-Graduação em Ciência Animal, Universidade Paranaense, Campus Umuarama, Praça Mascarenhas de Moraes, 4282, Zona III, PR 480, S/n, Km 14, Umuarama, PR 87502-210, Brasil. E-mail: piau@unipar.br The use of cottonseed in ruminant feed has aroused interest because it is an important energy and protein source as supplemental fodder. However, the cotton and your by-products have an anti-nutritional factor, the gossypol, which may have a toxic effect on ruminants. In Brazil there is still a lack of studies on animals, about the toxicity of the gossypol, and most studies with cotton in ruminant feed is performed in dairy cows. Thus, the objective of this study was to observe the effect of the addition of gossypol in the diet of Nelore heifers. 15 heifers were used receiving a daily diet consisting of 12 kg of silage with elephant grass and 100g of mineral supplement. The animals were divided into three groups. In the first group (A, control), the diet contained no gossypol; in the second group (B) was added in the diet, 900 ppm free gossypol; and in the third group (C), the diet contained 1500 ppm of free gossypol. Prior to administration of the diets and after the experiment began, animals were weighed biweekly (0, 15, 30, 45, 60 and 75 days, total of six weighings). Elapsed 10 weeks the animals were slaughter, and liver, heart and spleen were weighed, and samples of these organs were collected for preparation of histological sections. The animals were examined daily and there was no clinical signs of intoxication. In relation to weight gain, there was no statistical difference between the treated animals and the control group. At necropsy, gross changes were not seen in heart, spleen, liver, kidney and lungs. The weight of liver, heart and spleen showed no differences between groups. There were no clinical signs of renal injury but it was observed histopathologically discrete renal injury. The other organs showed no histological lesions. It was concluded that heifers may be fed with by-products of the cotton without showing clinical poisoning, since the level of gossypol does not exceed 1,500 ppm.A utilização do caroço de algodão na alimentação de ruminantes tem despertado interesse, por ser uma importante fonte energética e proteica suplementar às forragens. No entanto, subprodutos do algodão possuem um fator antinutricional, o gossipol que pode ter efeito tóxico para ruminantes. No Brasil ainda há carência de estudos sobre a toxicidade do gossipol para animais e a maioria dos estudos com algodão na alimenta- ção de ruminantes é realizado em vacas leiteiras. Dessa maneira, o objetivo do presente estudo foi observar o efeito da adição de gossipol na dieta de novilhas nelores.Foram utilizadas 15 novilhas que receberam a dieta diária no cocho, constituída de 12 kg de silagem de capim-elefante e 100g de suplemento mineral. Os animais foram divididos em três grupos. No primeiro grupo (A, controle) a dieta não continha gossipol, no segundo grupo (B) foi adicionado à dieta 900 ppm de gossipol livre e no terceiro grupo (C) a dieta continha 1.500 ppm de gossipol livre. Antes da administração das dietas e após o início do experimento, os animais foram pesados quinzenalmente (0, 15, 30, 45, 60 e 75 dias, total de seis pesagens). Transcorridas 10 semanas os animais foram para abate, sendo que o fígado, coração e baço foram pesados e foram coletadas amostras destes órgãos para confecção de cortes histológicos. Os animais foram examinados diariamente e não foram observados sinais clínicos de intoxicação. Em relação ao ganho de peso, não houve diferença estatística entre os animais tratados e o grupo controle. Na necropsia, não foram vistas alterações macroscópicas no coração, baço, fígado, rins e pulmões. O peso do fígado, do cora- ção e do baço não apresentaram diferenças entre os grupos. Não ocorreram sinais clínicos de lesão renal, mas histopatologicamente constatou-se lesão renal discreta. Os outros órgãos não evidenciaram lesões histológicas. Concluiu-se que novilhas Nelore podem ser alimentadas com subprodutos de algodão sem apresentar intoxicação clínica, desde que o nível de gossipol não ultrapasse 1.500 ppm.Sociedade de Medicina Veterinária do Estado do Rio de Janeiro.2017-10-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpeer reviewedAvaliado pelos paresapplication/pdfapplication/pdfhttps://rbmv.org/BJVM/article/view/277Brazilian Journal of Veterinary Medicine; Vol. 38 No. Supl. 1 (2016); 120-126Revista Brasileira de Medicina Veterinária; v. 38 n. Supl. 1 (2016); 120-1262527-21790100-2430reponame:Brazilian Journal of Veterinary Medicineinstname:Sociedade de Medicina Veterinária do Estado do Rio de Janeiro (SOMVERJ)instacron:SBMVporhttps://rbmv.org/BJVM/article/view/277/189https://rbmv.org/BJVM/article/view/277/812Júnior, Ranulfo PiauRibeiro, Edson de AzevedoQuessada, Ana MariaRibeiro, Ederson de Azevedode Almada, André a Felipe Bertoinfo:eu-repo/semantics/openAccess2020-12-23T17:34:01Zoai:ojs.rbmv.org:article/277Revistahttps://rbmv.org/BJVMONGhttps://rbmv.org/BJVM/oaicontato.rbmv@gmail.com2527-21790100-2430opendoar:2020-12-23T17:34:01Brazilian Journal of Veterinary Medicine - Sociedade de Medicina Veterinária do Estado do Rio de Janeiro (SOMVERJ)false |
dc.title.none.fl_str_mv |
Effects of the gossypol at different levels in diet of heifers Nelore Efeitos do gossipol em diferentes níveis na dieta de novilhas Nelore |
title |
Effects of the gossypol at different levels in diet of heifers Nelore |
spellingShingle |
Effects of the gossypol at different levels in diet of heifers Nelore Júnior, Ranulfo Piau Algodão alimentação bovino toxicidade Cattle cotton feeding toxicity |
title_short |
Effects of the gossypol at different levels in diet of heifers Nelore |
title_full |
Effects of the gossypol at different levels in diet of heifers Nelore |
title_fullStr |
Effects of the gossypol at different levels in diet of heifers Nelore |
title_full_unstemmed |
Effects of the gossypol at different levels in diet of heifers Nelore |
title_sort |
Effects of the gossypol at different levels in diet of heifers Nelore |
author |
Júnior, Ranulfo Piau |
author_facet |
Júnior, Ranulfo Piau Ribeiro, Edson de Azevedo Quessada, Ana Maria Ribeiro, Ederson de Azevedo de Almada, André a Felipe Berto |
author_role |
author |
author2 |
Ribeiro, Edson de Azevedo Quessada, Ana Maria Ribeiro, Ederson de Azevedo de Almada, André a Felipe Berto |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Júnior, Ranulfo Piau Ribeiro, Edson de Azevedo Quessada, Ana Maria Ribeiro, Ederson de Azevedo de Almada, André a Felipe Berto |
dc.subject.por.fl_str_mv |
Algodão alimentação bovino toxicidade Cattle cotton feeding toxicity |
topic |
Algodão alimentação bovino toxicidade Cattle cotton feeding toxicity |
description |
ABSTRACT. Piau-Junior R., Ribeiro E. de A., Quessada A.M., Ribeiro E. de A. & de Almada A.F.B. [Effects of the gossypol at different levels in diet of heifers Nelore.] Efeitos do gossipol em diferentes níveis na dieta de novilhas Nelore. Revista Brasileira de Medicina Veterinária, 38(Supl.1):120-126, 2016. Programa de Pós-Graduação em Ciência Animal, Universidade Paranaense, Campus Umuarama, Praça Mascarenhas de Moraes, 4282, Zona III, PR 480, S/n, Km 14, Umuarama, PR 87502-210, Brasil. E-mail: piau@unipar.br The use of cottonseed in ruminant feed has aroused interest because it is an important energy and protein source as supplemental fodder. However, the cotton and your by-products have an anti-nutritional factor, the gossypol, which may have a toxic effect on ruminants. In Brazil there is still a lack of studies on animals, about the toxicity of the gossypol, and most studies with cotton in ruminant feed is performed in dairy cows. Thus, the objective of this study was to observe the effect of the addition of gossypol in the diet of Nelore heifers. 15 heifers were used receiving a daily diet consisting of 12 kg of silage with elephant grass and 100g of mineral supplement. The animals were divided into three groups. In the first group (A, control), the diet contained no gossypol; in the second group (B) was added in the diet, 900 ppm free gossypol; and in the third group (C), the diet contained 1500 ppm of free gossypol. Prior to administration of the diets and after the experiment began, animals were weighed biweekly (0, 15, 30, 45, 60 and 75 days, total of six weighings). Elapsed 10 weeks the animals were slaughter, and liver, heart and spleen were weighed, and samples of these organs were collected for preparation of histological sections. The animals were examined daily and there was no clinical signs of intoxication. In relation to weight gain, there was no statistical difference between the treated animals and the control group. At necropsy, gross changes were not seen in heart, spleen, liver, kidney and lungs. The weight of liver, heart and spleen showed no differences between groups. There were no clinical signs of renal injury but it was observed histopathologically discrete renal injury. The other organs showed no histological lesions. It was concluded that heifers may be fed with by-products of the cotton without showing clinical poisoning, since the level of gossypol does not exceed 1,500 ppm. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-24 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer reviewed Avaliado pelos pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://rbmv.org/BJVM/article/view/277 |
url |
https://rbmv.org/BJVM/article/view/277 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://rbmv.org/BJVM/article/view/277/189 https://rbmv.org/BJVM/article/view/277/812 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade de Medicina Veterinária do Estado do Rio de Janeiro. |
publisher.none.fl_str_mv |
Sociedade de Medicina Veterinária do Estado do Rio de Janeiro. |
dc.source.none.fl_str_mv |
Brazilian Journal of Veterinary Medicine; Vol. 38 No. Supl. 1 (2016); 120-126 Revista Brasileira de Medicina Veterinária; v. 38 n. Supl. 1 (2016); 120-126 2527-2179 0100-2430 reponame:Brazilian Journal of Veterinary Medicine instname:Sociedade de Medicina Veterinária do Estado do Rio de Janeiro (SOMVERJ) instacron:SBMV |
instname_str |
Sociedade de Medicina Veterinária do Estado do Rio de Janeiro (SOMVERJ) |
instacron_str |
SBMV |
institution |
SBMV |
reponame_str |
Brazilian Journal of Veterinary Medicine |
collection |
Brazilian Journal of Veterinary Medicine |
repository.name.fl_str_mv |
Brazilian Journal of Veterinary Medicine - Sociedade de Medicina Veterinária do Estado do Rio de Janeiro (SOMVERJ) |
repository.mail.fl_str_mv |
contato.rbmv@gmail.com |
_version_ |
1798313107082182656 |