Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.rama.2015.01.003 |
Long-Term Forage and Cow-Calf Performance and Economic Considerations of Two Stocking Levels on Chihuahuan Desert Rangeland | |
Thomas, Milton G.1; Mohamed, Ahmed H.2; Sawalhah, Mohammed N.3; Holechek, Jerry L.4; Bailey, Derek W.4; Hawkes, Jerry M.; Luna-Nevarez, Pablo5; Molinar, Francisco6; Khumalo, Godfrey7 | |
通讯作者 | Holechek, Jerry L. |
来源期刊 | RANGELAND ECOLOGY & MANAGEMENT
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ISSN | 1550-7424 |
EISSN | 1551-5028 |
出版年 | 2015 |
卷号 | 68期号:2页码:158-165 |
英文摘要 | Forage and cow-calf productivity on two lightly and two conservatively grazed pastures were evaluated over a 15-year period (1997-2011) in the Chihuahuan Desert of south-central New Mexico. Spring-calving Brangus cows were randomly assigned to pastures in January of each year. Pastures were similar in area (1 098 +/- 69 ha, mean +/- SE) with similar terrain and distance towater. Utilization of primary forage species averaged 27.1 +/- 3.0% in lightly stocked pastures and 39.4 +/- 4.0% on conservatively stocked pastures. No differences in perennial grass standing crop (163.5 +/- 52.2 kg.ha(-1)) and calf weaning weights (286.1 +/- 2.6 kg) were detected (P > 0.10) between light and conservative treatments. Lightly grazed pastures yielded greater (P < 0.05) kg of calf weaned.ha(-1) and calf crop percent than conservatively grazed pastures in 1998 due to complete destocking of conservatively grazed pastures during that slight drought (i.e., rainfall was 75% of normal in 1998). After the initial 5 years of study (1997-2001), all pastures were destocked for 4 years (2002-2005) due to drought as rainfall was only 50% or less of normal. Pastures were then restocked for another 6 years (2006-2011). Postdrought, the percentage change in perennial grass standing forage crop (kg.ha(-1)) was -4.0 and -14.4 +/- 2.5 % (P < 0.09) in the light and conservative grazed pastures across the 6 years, respectively. While conservative stocking rates may provide higher net financial returns than light stocking rates during nondrought years as there were more AU per pasture, potential losses from cattle liquidation during short-term (i.e., 1-year) droughts could nullify this advantage. Results suggest that light grazing use of forage is a practical approach for Chihuahuan Desert cow-calf operations to minimize risk of herd liquidation during short-term drought. Published by Elsevier Inc. on behalf of Society for Range Management. |
英文关键词 | Cattle productivity Drought Forage Grazing management Rangelands |
类型 | Article |
语种 | 英语 |
国家 | USA ; Egypt ; Mexico ; Swaziland |
收录类别 | SCI-E |
WOS记录号 | WOS:000353217600006 |
WOS关键词 | REPRODUCTIVE-PERFORMANCE ; CLIMATE-CHANGE ; BRANGUS COWS ; CATTLE ; TRENDS ; VARIABILITY ; MODERATE ; BREED |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | New Mexico State University ; Colorado State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/190111 |
作者单位 | 1.Colorado State Univ, Dept Anim Sci, Beef Cattle Breeding & Genet, Ft Collins, CO 80523 USA; 2.Desert Res Ctr, Dept Plant Ecol & Range Management, Cairo, Egypt; 3.New Mexico State Univ, Las Cruces, NM 88003 USA; 4.New Mexico State Univ, Dept Anim & Range Sci, Las Cruces, NM 88003 USA; 5.Inst Technol De Sonora, Dept Ciencias Agron & Vet, Obregon 85000, Son, Mexico; 6.USDA, Nat Resource Conservat Serv, El Paso, TX 79936 USA; 7.Univ Swaziland, Anim Sci, Luyengo MR18, Swaziland |
推荐引用方式 GB/T 7714 | Thomas, Milton G.,Mohamed, Ahmed H.,Sawalhah, Mohammed N.,et al. Long-Term Forage and Cow-Calf Performance and Economic Considerations of Two Stocking Levels on Chihuahuan Desert Rangeland[J]. New Mexico State University, Colorado State University,2015,68(2):158-165. |
APA | Thomas, Milton G..,Mohamed, Ahmed H..,Sawalhah, Mohammed N..,Holechek, Jerry L..,Bailey, Derek W..,...&Khumalo, Godfrey.(2015).Long-Term Forage and Cow-Calf Performance and Economic Considerations of Two Stocking Levels on Chihuahuan Desert Rangeland.RANGELAND ECOLOGY & MANAGEMENT,68(2),158-165. |
MLA | Thomas, Milton G.,et al."Long-Term Forage and Cow-Calf Performance and Economic Considerations of Two Stocking Levels on Chihuahuan Desert Rangeland".RANGELAND ECOLOGY & MANAGEMENT 68.2(2015):158-165. |
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