Macronutrient and amino acids composition of milk replacers for dairy calves

Detalhes bibliográficos
Autor(a) principal: Bittar,Carla Maris Machado
Data de Publicação: 2018
Outros Autores: Silva,Jackeline Thais da, Chester-Jones,Hugh
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Saúde e Produção Animal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-99402018000100047
Resumo: SUMMARY Other than crude protein (CP), crude energy (CE) and crude fiber (CF) content, the adequate supply of essential amino acids (EAA) is an important factor in milk replacer evaluation. The aim of this study was to analyze milk replacer samples as regard to nutrients, especially EAA, composition and simulate the attainability of calves' requirements in different feeding systems. Forty-one milk replacer samples were collected from 14 brands and analyzed for nutrient composition. The near infrared spectroscopy technique was used for AA content estimation. Samples presented adequate levels of CP (21.2±2.90%) and ether extract (14.5±3.41%) for calves fed according to the conventional (4L/d), but not for intensive milk feeding system (>6L/d). High values of CF were observed in the samples (1.6±0.86%). The EAA composition of milk replacer samples was lower than expected for a liquid feed supposed to replace whole milk. None of the analyzed samples presented adequate lysine (5.72±1.09% CP) or methionine (1.65±0.38% CP) to meet calves' daily requirements, regardless of feeding system. Higher crude protein milk replacers are needed. Alternatively, supplementation of milk replacers with EAA is recommended.
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spelling Macronutrient and amino acids composition of milk replacers for dairy calvescalveslysinemethionineweaningSUMMARY Other than crude protein (CP), crude energy (CE) and crude fiber (CF) content, the adequate supply of essential amino acids (EAA) is an important factor in milk replacer evaluation. The aim of this study was to analyze milk replacer samples as regard to nutrients, especially EAA, composition and simulate the attainability of calves' requirements in different feeding systems. Forty-one milk replacer samples were collected from 14 brands and analyzed for nutrient composition. The near infrared spectroscopy technique was used for AA content estimation. Samples presented adequate levels of CP (21.2±2.90%) and ether extract (14.5±3.41%) for calves fed according to the conventional (4L/d), but not for intensive milk feeding system (>6L/d). High values of CF were observed in the samples (1.6±0.86%). The EAA composition of milk replacer samples was lower than expected for a liquid feed supposed to replace whole milk. None of the analyzed samples presented adequate lysine (5.72±1.09% CP) or methionine (1.65±0.38% CP) to meet calves' daily requirements, regardless of feeding system. Higher crude protein milk replacers are needed. Alternatively, supplementation of milk replacers with EAA is recommended.UFBA - Universidade Federal da Bahia2018-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-99402018000100047Revista Brasileira de Saúde e Produção Animal v.19 n.1 2018reponame:Revista Brasileira de Saúde e Produção Animalinstname:Universidade Federal da Bahia (UFBA)instacron:UFBA10.1590/s1519-99402018000100005info:eu-repo/semantics/openAccessBittar,Carla Maris MachadoSilva,Jackeline Thais daChester-Jones,Hugheng2018-04-26T00:00:00Zoai:scielo:S1519-99402018000100047Revistahttp://www.rbspa.ufba.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||rbspa@ufba.br1519-99401519-9940opendoar:2018-04-26T00:00Revista Brasileira de Saúde e Produção Animal - Universidade Federal da Bahia (UFBA)false
dc.title.none.fl_str_mv Macronutrient and amino acids composition of milk replacers for dairy calves
title Macronutrient and amino acids composition of milk replacers for dairy calves
spellingShingle Macronutrient and amino acids composition of milk replacers for dairy calves
Bittar,Carla Maris Machado
calves
lysine
methionine
weaning
title_short Macronutrient and amino acids composition of milk replacers for dairy calves
title_full Macronutrient and amino acids composition of milk replacers for dairy calves
title_fullStr Macronutrient and amino acids composition of milk replacers for dairy calves
title_full_unstemmed Macronutrient and amino acids composition of milk replacers for dairy calves
title_sort Macronutrient and amino acids composition of milk replacers for dairy calves
author Bittar,Carla Maris Machado
author_facet Bittar,Carla Maris Machado
Silva,Jackeline Thais da
Chester-Jones,Hugh
author_role author
author2 Silva,Jackeline Thais da
Chester-Jones,Hugh
author2_role author
author
dc.contributor.author.fl_str_mv Bittar,Carla Maris Machado
Silva,Jackeline Thais da
Chester-Jones,Hugh
dc.subject.por.fl_str_mv calves
lysine
methionine
weaning
topic calves
lysine
methionine
weaning
description SUMMARY Other than crude protein (CP), crude energy (CE) and crude fiber (CF) content, the adequate supply of essential amino acids (EAA) is an important factor in milk replacer evaluation. The aim of this study was to analyze milk replacer samples as regard to nutrients, especially EAA, composition and simulate the attainability of calves' requirements in different feeding systems. Forty-one milk replacer samples were collected from 14 brands and analyzed for nutrient composition. The near infrared spectroscopy technique was used for AA content estimation. Samples presented adequate levels of CP (21.2±2.90%) and ether extract (14.5±3.41%) for calves fed according to the conventional (4L/d), but not for intensive milk feeding system (>6L/d). High values of CF were observed in the samples (1.6±0.86%). The EAA composition of milk replacer samples was lower than expected for a liquid feed supposed to replace whole milk. None of the analyzed samples presented adequate lysine (5.72±1.09% CP) or methionine (1.65±0.38% CP) to meet calves' daily requirements, regardless of feeding system. Higher crude protein milk replacers are needed. Alternatively, supplementation of milk replacers with EAA is recommended.
publishDate 2018
dc.date.none.fl_str_mv 2018-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1519-99402018000100005
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv UFBA - Universidade Federal da Bahia
publisher.none.fl_str_mv UFBA - Universidade Federal da Bahia
dc.source.none.fl_str_mv Revista Brasileira de Saúde e Produção Animal v.19 n.1 2018
reponame:Revista Brasileira de Saúde e Produção Animal
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
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reponame_str Revista Brasileira de Saúde e Produção Animal
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repository.name.fl_str_mv Revista Brasileira de Saúde e Produção Animal - Universidade Federal da Bahia (UFBA)
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