Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica

Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica

Detalles Bibliográficos
Autores principales: Vargas Sobrado, Diana, Murillo Herrera, Jaime, Hueckmann Voss, Frank, Romero Zúñiga, Juan José
Formato: Online
Idioma:spa
Publicado: Universidad Nacional, Costa Rica 2017
Acceso en línea:https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/9030
id VETERINARIA9030
record_format ojs
spelling VETERINARIA90302019-08-27T15:19:36Z Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica Valores de la relación grasa/proteína y nitrógeno ureico en leche de vacas lecheras de la zona norte de Alajuela y Heredia, Costa Rica Vargas Sobrado, Diana Murillo Herrera, Jaime Hueckmann Voss, Frank Romero Zúñiga, Juan José enfermedades metabólicas acidosis ruminal cetosis pastoreo lechería salud de hato producción reproduction metabolic diseases ruminal acidosis ketosis grazing dairy farm herd health production reproduction Milk components provide an economical and less invasive tool to monitor metabolic balance and food rations given to dairy cattle. In order to determine values for fat, protein, protein/fat ratio, and milk urea nitrogen in Costa Rican dairy cows, milk samples were taken from 442 animals from four specialized dairy farms in northern Alajuela and Heredia, during the two daily milkings in April and August 2012. Each component was analyzed using descriptive statistics and comparing means for different categories according to days in lactation, parity number, season of sampling and breed. Average levels were found at 3.34% for protein (95% CI: 3.29-3.37), 4.13% for fat (95% CI: 4.04-4.22), and 16.81 mg/dl for urea nitrogen (95% CI: 16.64-17.26), as well as an average protein/fat ratio of 1.26 (95% CI: 1.24-1.28). There were differences in the components based on breed, parity number and days in lactation. Variations in the percentages of fat, protein, protein/fat ratio and milk urea nitrogen according to breed, parity number, season and days in lactation may indicate metabolic imbalances; consequently, the foregoing must be taken into account when analyzing the diet of cows and their productive and reproductive performance. Los componentes de la leche brindan una herramienta económica, menos invasiva al monitorear el balance metabólico y la ración suministrada a ganado lechero. Con el fin de determinar valores de grasa, proteína, la relación grasa/proteína y nitrógeno ureico, en vacas lecheras de Costa Rica, se tomó muestras de leche de 442 animales, durante los dos ordeños del día, en abril y agosto del 2012, en cuatro fincas productoras de leche de la zona norte de Alajuela y Heredia. Cada uno de estos componentes se analizó, mediante estadística descriptiva y comparaciones de promedios, en diferentes categorías, según cantidad de días en lactación, número de lactancias, mes de muestreo y raza. Se obtuvo niveles promedio de proteína de 3,34% (IC 95%: 3,29-3,37), grasa 4,13% (IC 95%: 4,04-4,22), nitrógeno ureico 16,81 mg/dl (IC 95%: 16,64-17,26), y una relación grasa/proteína promedio de 1,26 (IC 95%: 1,24-1,28). Hubo diferencias en los componentes según raza, número de lactancias y días en lactación. Las variaciones existentes, en los porcentajes de grasa, proteína, relación grasa/proteína y nitrógeno ureico, según la etapa productiva del animal, la raza, la época de muestreo y días en lactancia, podrían indicar desbalances metabólicos; por tanto, debe tomarse en cuenta a la hora de analizar el desempeño productivo y reproductivo así como la dieta de las vacas. Universidad Nacional, Costa Rica 2017-01-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/9030 10.15359/rcv.34-2.1 Ciencias Veterinarias; Vol. 34 No. 2 (2016): Ciencias Veterinarias (Julio-Diciembre); 67-80 Ciencias Veterinarias; Vol. 34 Núm. 2 (2016): Ciencias Veterinarias (Julio-Diciembre); 67-80 2215-4507 0250-5649 spa https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/9030/10519 https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/9030/10525 Copyright (c) 2017 Revista Ciencias Veterinarias
institution Universidad Nacional de Costa Rica
collection Ciencias Veterinarias
language spa
format Online
author Vargas Sobrado, Diana
Murillo Herrera, Jaime
Hueckmann Voss, Frank
Romero Zúñiga, Juan José
spellingShingle Vargas Sobrado, Diana
Murillo Herrera, Jaime
Hueckmann Voss, Frank
Romero Zúñiga, Juan José
Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica
author_facet Vargas Sobrado, Diana
Murillo Herrera, Jaime
Hueckmann Voss, Frank
Romero Zúñiga, Juan José
author_sort Vargas Sobrado, Diana
title Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica
title_short Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica
title_full Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica
title_fullStr Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica
title_full_unstemmed Values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern Alajuela and Heredia, Costa Rica
title_sort values for protein/fat ratio and milk urea nitrogen in milk from dairy cows in northern alajuela and heredia, costa rica
title_alt Valores de la relación grasa/proteína y nitrógeno ureico en leche de vacas lecheras de la zona norte de Alajuela y Heredia, Costa Rica
publisher Universidad Nacional, Costa Rica
publishDate 2017
url https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/9030
work_keys_str_mv AT vargassobradodiana valuesforproteinfatratioandmilkureanitrogeninmilkfromdairycowsinnorthernalajuelaandherediacostarica
AT murilloherrerajaime valuesforproteinfatratioandmilkureanitrogeninmilkfromdairycowsinnorthernalajuelaandherediacostarica
AT hueckmannvossfrank valuesforproteinfatratioandmilkureanitrogeninmilkfromdairycowsinnorthernalajuelaandherediacostarica
AT romerozunigajuanjose valuesforproteinfatratioandmilkureanitrogeninmilkfromdairycowsinnorthernalajuelaandherediacostarica
AT vargassobradodiana valoresdelarelaciongrasaproteinaynitrogenoureicoenlechedevacaslecherasdelazonanortedealajuelayherediacostarica
AT murilloherrerajaime valoresdelarelaciongrasaproteinaynitrogenoureicoenlechedevacaslecherasdelazonanortedealajuelayherediacostarica
AT hueckmannvossfrank valoresdelarelaciongrasaproteinaynitrogenoureicoenlechedevacaslecherasdelazonanortedealajuelayherediacostarica
AT romerozunigajuanjose valoresdelarelaciongrasaproteinaynitrogenoureicoenlechedevacaslecherasdelazonanortedealajuelayherediacostarica
_version_ 1805400480703053824

Ejemplares similares