Growth curve, blood parameters and carcass traits of grass-fed Angus steers

The increasing demand for natural products is currently transforming the meat industry, making grass-fed and finished beef a valuable option for improving profits. However, the transformation of conventional operations to grass-fed systems comprises many modifications, such as logistical, technologi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	J.A. Carrillo, Y. Bai, Y. He, Y. Li, W. Cai, D.M. Bickhart, G. Liu, S.M. Barao, T. Sonstegard, J. Song
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Animal welfare Beef quality Genomics Grass-fed and finished beef Growth development Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/7ba01574222d435f8c661932c35f9944
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7ba01574222d435f8c661932c35f9944
record_format	dspace
spelling	oai:doaj.org-article:7ba01574222d435f8c661932c35f99442021-11-26T04:25:19ZGrowth curve, blood parameters and carcass traits of grass-fed Angus steers1751-731110.1016/j.animal.2021.100381https://doaj.org/article/7ba01574222d435f8c661932c35f99442021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S175173112100224Xhttps://doaj.org/toc/1751-7311The increasing demand for natural products is currently transforming the meat industry, making grass-fed and finished beef a valuable option for improving profits. However, the transformation of conventional operations to grass-fed systems comprises many modifications, such as logistical, technological, and financial that could be very complex and expensive, involving economic risk. Therefore, in this study, we analyzed the growth curve, critical economic traits, and carcass quality and finished characteristics over several consecutive years in closely related grass-fed and finished Angus steers, to reduce the genetic effect on the results. We found that grass-fed steers require around 188 additional days to reach the market weight (approx. 470 kg) and had approximately 70% less average daily gain compared to the grain-fed and finished steers. Regression analysis demonstrated an interaction between feed and age (P < 0.01); thus, individual regressions were fitted for each regimen style, obtaining almost perfect linear curves for both treatments, which could be straightforwardly used in practical situations due to its simplicity. Six of eight carcass traits were different between grain-fed and grass-fed and finished steers. Hot-carcass weight, dressing, back fat, and quality grade were superior in grain-fed individuals, contrarily to yield grade and ribeye area/carcass ratio, which were better in grass-fed and finished steers (P < 0.05).Interestingly, the meat tenderness was certainly low and similar in both treatments (P = 0.25), indicating the feasibility of producing tender meat with animals under a grass-fed diet. Nevertheless, according to the quality grade analysis, grain-fed carcasses were greater ranked compared to grass-fed bodies (P < 0.01), regardless of their same tenderness. The results will provide valuable information for better understanding beef cattle in grass-feeding finishing systems, especially from weaning to harvest. Additionally, the study will expand the knowledge about the quality of meat obtained from animals that received grass exclusively, becoming relevant information for economic evaluation and management decisions for grass-based cattle operations.J.A. CarrilloY. BaiY. HeY. LiW. CaiD.M. BickhartG. LiuS.M. BaraoT. SonstegardJ. SongElsevierarticleAnimal welfareBeef qualityGenomicsGrass-fed and finished beefGrowth developmentAnimal cultureSF1-1100ENAnimal, Vol 15, Iss 11, Pp 100381- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Animal welfare Beef quality Genomics Grass-fed and finished beef Growth development Animal culture SF1-1100
spellingShingle	Animal welfare Beef quality Genomics Grass-fed and finished beef Growth development Animal culture SF1-1100 J.A. Carrillo Y. Bai Y. He Y. Li W. Cai D.M. Bickhart G. Liu S.M. Barao T. Sonstegard J. Song Growth curve, blood parameters and carcass traits of grass-fed Angus steers
description	The increasing demand for natural products is currently transforming the meat industry, making grass-fed and finished beef a valuable option for improving profits. However, the transformation of conventional operations to grass-fed systems comprises many modifications, such as logistical, technological, and financial that could be very complex and expensive, involving economic risk. Therefore, in this study, we analyzed the growth curve, critical economic traits, and carcass quality and finished characteristics over several consecutive years in closely related grass-fed and finished Angus steers, to reduce the genetic effect on the results. We found that grass-fed steers require around 188 additional days to reach the market weight (approx. 470 kg) and had approximately 70% less average daily gain compared to the grain-fed and finished steers. Regression analysis demonstrated an interaction between feed and age (P < 0.01); thus, individual regressions were fitted for each regimen style, obtaining almost perfect linear curves for both treatments, which could be straightforwardly used in practical situations due to its simplicity. Six of eight carcass traits were different between grain-fed and grass-fed and finished steers. Hot-carcass weight, dressing, back fat, and quality grade were superior in grain-fed individuals, contrarily to yield grade and ribeye area/carcass ratio, which were better in grass-fed and finished steers (P < 0.05).Interestingly, the meat tenderness was certainly low and similar in both treatments (P = 0.25), indicating the feasibility of producing tender meat with animals under a grass-fed diet. Nevertheless, according to the quality grade analysis, grain-fed carcasses were greater ranked compared to grass-fed bodies (P < 0.01), regardless of their same tenderness. The results will provide valuable information for better understanding beef cattle in grass-feeding finishing systems, especially from weaning to harvest. Additionally, the study will expand the knowledge about the quality of meat obtained from animals that received grass exclusively, becoming relevant information for economic evaluation and management decisions for grass-based cattle operations.
format	article
author	J.A. Carrillo Y. Bai Y. He Y. Li W. Cai D.M. Bickhart G. Liu S.M. Barao T. Sonstegard J. Song
author_facet	J.A. Carrillo Y. Bai Y. He Y. Li W. Cai D.M. Bickhart G. Liu S.M. Barao T. Sonstegard J. Song
author_sort	J.A. Carrillo
title	Growth curve, blood parameters and carcass traits of grass-fed Angus steers
title_short	Growth curve, blood parameters and carcass traits of grass-fed Angus steers
title_full	Growth curve, blood parameters and carcass traits of grass-fed Angus steers
title_fullStr	Growth curve, blood parameters and carcass traits of grass-fed Angus steers
title_full_unstemmed	Growth curve, blood parameters and carcass traits of grass-fed Angus steers
title_sort	growth curve, blood parameters and carcass traits of grass-fed angus steers
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7ba01574222d435f8c661932c35f9944
work_keys_str_mv	AT jacarrillo growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT ybai growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT yhe growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT yli growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT wcai growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT dmbickhart growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT gliu growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT smbarao growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT tsonstegard growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers AT jsong growthcurvebloodparametersandcarcasstraitsofgrassfedangussteers
_version_	1718409910161506304

Growth curve, blood parameters and carcass traits of grass-fed Angus steers

Ejemplares similares