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A comparative study on milk composition of Jersey and Holstein dairy cows during the early lactation
Recently, Jersey cattle was introduced and produced by embryo transfer to Korea. This study was conducted to investigate the differences of milk compositions between Jersey and Holstein cows and the relationship between days in milk (DIM) and milk compositions during early lactation. Data were colle...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Korean Society of Animal Sciences and Technology
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7416159/ https://www.ncbi.nlm.nih.gov/pubmed/32803188 http://dx.doi.org/10.5187/jast.2020.62.4.565 |
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author | Lim, Dong-Hyun Mayakrishnan, Vijayakumar Lee, Hyun-Jeong Ki, Kwang-Seok Kim, Tae-Il Kim, Younghoon |
author_facet | Lim, Dong-Hyun Mayakrishnan, Vijayakumar Lee, Hyun-Jeong Ki, Kwang-Seok Kim, Tae-Il Kim, Younghoon |
author_sort | Lim, Dong-Hyun |
collection | PubMed |
description | Recently, Jersey cattle was introduced and produced by embryo transfer to Korea. This study was conducted to investigate the differences of milk compositions between Jersey and Holstein cows and the relationship between days in milk (DIM) and milk compositions during early lactation. Data were collected from twelve lactating cows from Department of Animal Resources Development at National Institute of Animal Science. Cows in parity 1 were used, and calved at spring from April to March of 2017. All cows were housed in two sections within a free-stall barn, which divided into six from each breed, and received a basal total mixed ration. Milk samples of each cow were collected at 3 DIM and 30 DIM for analyzing the milk compositions, including fatty acids (FA), amino acids and minerals. Total solids, citrate, and milk urea nitrogen level were differed between the breeds (p < 0.05). As DIM went from 3 to 30, milk protein, total solids, and somatic cell count decreased (p < 0.05), but lactose increased in all breed milk (p < 0.05). Citrate and free fatty acid (FFA) elevated in Jersey milk (p < 0.05), whereas reduced in Holstein milk (p < 0.05). Proportions of some individual FA varied from the breeds. Myristic (C14:0), palmitic (C16:0), and arachidonic acid (C20:4) in milk from all cows were higher at 3 DIM than at 30 DIM (p < 0.05). Also, stearic (C18:0) and oleic acid (C18:1) were lower at 3 DIM than at 30 DIM (p < 0.05), and the C18:1 to C18:0 ratio was significantly differed in DIM × breed interactions (p < 0.05). The contents of the individual amino acids did not differ from the breeds. Calcium, phosphorous, magnesium, and zinc (Zn) contents was significantly increased in Holstein milk than Jersey milk at 3 DIM. Also, K and Zn concentrations were higher in Holstein milk than in Jersey milk at 30 DIM (p < 0.05). It was concluded that Jersey cows would produce more effective milk in processing dairy products and more proper energy status compared with Holstein cows in early lactation under the same environmental and nutritional conditions. |
format | Online Article Text |
id | pubmed-7416159 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Korean Society of Animal Sciences and Technology |
record_format | MEDLINE/PubMed |
spelling | pubmed-74161592020-08-14 A comparative study on milk composition of Jersey and Holstein dairy cows during the early lactation Lim, Dong-Hyun Mayakrishnan, Vijayakumar Lee, Hyun-Jeong Ki, Kwang-Seok Kim, Tae-Il Kim, Younghoon J Anim Sci Technol Research Article Recently, Jersey cattle was introduced and produced by embryo transfer to Korea. This study was conducted to investigate the differences of milk compositions between Jersey and Holstein cows and the relationship between days in milk (DIM) and milk compositions during early lactation. Data were collected from twelve lactating cows from Department of Animal Resources Development at National Institute of Animal Science. Cows in parity 1 were used, and calved at spring from April to March of 2017. All cows were housed in two sections within a free-stall barn, which divided into six from each breed, and received a basal total mixed ration. Milk samples of each cow were collected at 3 DIM and 30 DIM for analyzing the milk compositions, including fatty acids (FA), amino acids and minerals. Total solids, citrate, and milk urea nitrogen level were differed between the breeds (p < 0.05). As DIM went from 3 to 30, milk protein, total solids, and somatic cell count decreased (p < 0.05), but lactose increased in all breed milk (p < 0.05). Citrate and free fatty acid (FFA) elevated in Jersey milk (p < 0.05), whereas reduced in Holstein milk (p < 0.05). Proportions of some individual FA varied from the breeds. Myristic (C14:0), palmitic (C16:0), and arachidonic acid (C20:4) in milk from all cows were higher at 3 DIM than at 30 DIM (p < 0.05). Also, stearic (C18:0) and oleic acid (C18:1) were lower at 3 DIM than at 30 DIM (p < 0.05), and the C18:1 to C18:0 ratio was significantly differed in DIM × breed interactions (p < 0.05). The contents of the individual amino acids did not differ from the breeds. Calcium, phosphorous, magnesium, and zinc (Zn) contents was significantly increased in Holstein milk than Jersey milk at 3 DIM. Also, K and Zn concentrations were higher in Holstein milk than in Jersey milk at 30 DIM (p < 0.05). It was concluded that Jersey cows would produce more effective milk in processing dairy products and more proper energy status compared with Holstein cows in early lactation under the same environmental and nutritional conditions. Korean Society of Animal Sciences and Technology 2020-07 2020-07-31 /pmc/articles/PMC7416159/ /pubmed/32803188 http://dx.doi.org/10.5187/jast.2020.62.4.565 Text en © Copyright 2020 Korean Society of Animal Science and Technology http://creativecommons.org/licenses/by-nc/4.0/ This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Lim, Dong-Hyun Mayakrishnan, Vijayakumar Lee, Hyun-Jeong Ki, Kwang-Seok Kim, Tae-Il Kim, Younghoon A comparative study on milk composition of Jersey and Holstein dairy cows during the early lactation |
title | A comparative study on milk composition of Jersey and Holstein dairy
cows during the early lactation |
title_full | A comparative study on milk composition of Jersey and Holstein dairy
cows during the early lactation |
title_fullStr | A comparative study on milk composition of Jersey and Holstein dairy
cows during the early lactation |
title_full_unstemmed | A comparative study on milk composition of Jersey and Holstein dairy
cows during the early lactation |
title_short | A comparative study on milk composition of Jersey and Holstein dairy
cows during the early lactation |
title_sort | comparative study on milk composition of jersey and holstein dairy
cows during the early lactation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7416159/ https://www.ncbi.nlm.nih.gov/pubmed/32803188 http://dx.doi.org/10.5187/jast.2020.62.4.565 |
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