干旱区生态环境知识资源中心(Arid): Weight gain, grazing behavior and carcass quality of desert grass-fed Rar ' amuri Criollo vs. crossbred steers*

Arid

DOI	10.1016/j.livsci.2021.104511
	Weight gain, grazing behavior and carcass quality of desert grass-fed Rar ' amuri Criollo vs. crossbred steers*
	McIntosh, Matthew M.; Cibils, Andres F.; Estell, Richard E.; Nyamuryekung'e, Shelemia; Gonzalez, Alfredo L.; Gong, Qixu; Cao, Huiping; Spiegal, Sheri A.; Soto-Navarro, Sergio A.; Blair, Amanda D.
通讯作者	Cibils, AF (corresponding author), New Mexico State Univ, Dept Anim & Range Sci, Las Cruces, NM 88003 USA. ; Estell, RE (corresponding author), USDA Agr Res Serv, Jornada Expt Range, Las Cruces, NM 88003 USA.
来源期刊	LIVESTOCK SCIENCE
ISSN	1871-1413
EISSN	1878-0490
出版年	2021
卷号	249
英文摘要	Rar ' amuri Criollo cattle producers often crossbreed their cows with improved beef-breed bulls and/or retain and develop their yearlings on rangeland because of limited weaned calf markets, however it is unknown if Rar ' amuri Criollo steers exhibit marketable weight gains and carcass qualities, or desirable grazing behaviors documented in cows of this biotype. We evaluated two cohorts (cohort: 1 = 31, 2 = 26) of Rar ' amuri Criollo (JRC), Mexican Criollo (MC) and Criollo x beef-breed crossbred (XC) steers to investigate effects of biotype on growth, carcass traits, and landscape utilization. Steers were weighed approximately once every 2-mo and average daily gains (ADG) calculated. Nine JRC and XC steers per cohort were monitored at 5-min intervals via global positioning systems (GPS) for 1-mo during winter (2015-16) and late-summer (2016-17). Weight and carcass data were analyzed using mixed measures procedures to identify differences between biotype through time. Discriminant analyses were conducted to determine whether grazing behaviors could be discriminated among: 1) JRC and XC steers and JRC cows; 2) steers by season (winter vs. summer); and 3) steers of cohort 1 and 2. Final live and carcass weights of XC were greater than JRC and MC, but all were market ready at 30-mo following a grassfinishing protocol. Carcass quality and ADG were not different among biotypes. Steers were discriminated into different season or cohort groups based on grazing behavior differences but JRC and XC steers exhibited grazing patterns that were similar to those previously observed in JRC cows. Our results suggest that JRC, MC, and XC steers can be developed to slaughter weights in 30-mo using a rangeland-based grass-fed protocol, and that JRC and XC steers exhibit desirable grazing behaviors previously observed in JRC cows.
英文关键词	Beef cattle Grass finished steers Heritage genetics Livestock behavior Climate change Grass-fed supply-chain
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000656803200013
WOS关键词	FATTY-ACID-COMPOSITION ; SEARCHING BEHAVIOR ; FORAGING BEHAVIOR ; MEAT QUALITY ; CATTLE ; DIET ; COWS ; PERFORMANCE ; RANGELANDS ; SELECTION
WOS类目	Agriculture, Dairy & Animal Science
WOS研究方向	Agriculture
来源机构	New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351106
作者单位	[McIntosh, Matthew M.; Cibils, Andres F.; Nyamuryekung'e, Shelemia; Soto-Navarro, Sergio A.] New Mexico State Univ, Dept Anim & Range Sci, Las Cruces, NM 88003 USA; [Estell, Richard E.; Gonzalez, Alfredo L.; Spiegal, Sheri A.] USDA Agr Res Serv, Jornada Expt Range, Las Cruces, NM 88003 USA; [Gong, Qixu; Cao, Huiping] New Mexico State Univ, Dept Comp Sci, Las Cruces, NM 88003 USA; [Blair, Amanda D.] South Dakota State Univ, Dept Anim Sci, Brookings, SD 57007 USA
推荐引用方式 GB/T 7714	McIntosh, Matthew M.,Cibils, Andres F.,Estell, Richard E.,et al. Weight gain, grazing behavior and carcass quality of desert grass-fed Rar ' amuri Criollo vs. crossbred steers*[J]. New Mexico State University,2021,249.
APA	McIntosh, Matthew M..,Cibils, Andres F..,Estell, Richard E..,Nyamuryekung'e, Shelemia.,Gonzalez, Alfredo L..,...&Blair, Amanda D..(2021).Weight gain, grazing behavior and carcass quality of desert grass-fed Rar ' amuri Criollo vs. crossbred steers*.LIVESTOCK SCIENCE,249.
MLA	McIntosh, Matthew M.,et al."Weight gain, grazing behavior and carcass quality of desert grass-fed Rar ' amuri Criollo vs. crossbred steers*".LIVESTOCK SCIENCE 249(2021).