Evaluation of Low Heat Unit Corn Hybrids Compared to Barley for Forage Yield and Quality on the Canadian Prairies

Lardner, H.A.; Pearce, Leah; Damiran, Daalkhaijav

doi:10.5539/sar.v6n1p90

Cited by 15 publications

(21 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The NRC (2000) model predicts that a dry cow in early to mid-gestation requires 7 to 8% of CP in the diet for maintenance which increases to 11 to 13% CP in young growing or lactating cows. Crude protein content of both CMV varieties and AC Grazeland alfalfa in current study was generally greater than 14%, meeting the protein requirements of pregnant heifers and mature cows during their entire gestation period (NRC, 2000;Lardner et al, 2017). Using TDN as the energy source for beef cow, the rule of thumb is 55-60-65 (%, DM) (Yurchak & Okine, 2004).…”

Section: Forage Nutritive Valuementioning

confidence: 61%

See 1 more Smart Citation

Evaluation of Cicer Milkvetch and Alfalfa Cultivars for Nutritive Value, Anti-Quality Factors and Animal Preference

Lardner¹,

Pearce²,

Damiran³

2018

SAR

Self Cite

View full text Add to dashboard Cite

Cicer milkvetch (CMV; Astragalus cicer L.) is an alternative non-bloat legume to managing alfalfa. A 2-yr study was conducted to compare three CMV cultivars (Oxley II, Oxley, and Veldt) to AC Grazeland alfalfa (ALF; check forage) for nutritive value and animal preference. Each yr, replicate samples (n = 4) of each forage type were harvested late summer and analyzed for nutrient profile. Oxley II had lower (p < 0.05) fiber content than AC Grazeland, while Oxley and Veldt were similar (p = 0.48) to AC Grazeland for neutral detergent fibre (NDF), acid detergent fibre (ADF) and starch. In contrast, Oxley II had higher (p < 0.05) net energy for gain (NEg) than AC Grazeland, and Oxley and Veldt were similar (p > 0.05) to AC Grazeland for NEg. All three CMV varieties had similar levels of total digestible nutrients (TDN) (63.6 ± 0.6%; p > 0.05), but had higher (p = 0.01) energy content than AC Grazeland alfalfa (54.9 ± 1.4% TDN). Selenium (Se) concentrations were similar (p > 0.05) among CVM cultivars and less than 1 mg/kg DM, and no swainsonine or nitrotoxins were detected in the CMV cultivars. The Oxley II CMV tended (p = 0.06) to have a higher (139) relative feed value (RFV) compared to AC Grazeland (94), while Oxley and Veldt had moderate RFV values (128). Dry matter intake of Oxley II, Veldt, and Oxley CMV was 4, 18, and 28% greater than AC Grazeland, respectively. Based on the relative preference index (ratio of forage DMI to AC Grazeland alfalfa DMI), forage types are ranked as follows: AC Grazeland (1.0) < Veldt (1.2) < Oxley (1.4) < Oxley II (1.7). Study results suggest that CMV cultivars harvested late summer, maintained higher forage quality with greater preference compared to alfalfa.

show abstract

Section: Forage Nutritive Valuementioning

confidence: 61%

“…Chemical composition of cicer milkvetch and alfalfa grown at WBDC Termuende Research Ranch, Lanigan, Saskatchewan,CANADA (2016 and2017) …”

mentioning

confidence: 99%

Evaluation of Cicer Milkvetch and Alfalfa Cultivars for Nutritive Value, Anti-Quality Factors and Animal Preference

Lardner¹,

Pearce²,

Damiran³

2018

SAR

Self Cite

View full text Add to dashboard Cite

show abstract

“…Annual crop residue grazing has greatly increased in the last decade in the NGP (Asem‐Hiablie et al, 2016; Ulrich‐Schad and Abulbasher, 2018) and could be increased further in colder regions. For instance, in western Canada, with the development and adoption of more low heat unit corn and other warm season annual crops, the use of these crops as standing winter ICLS forages could continue to increase (Jose et al, 2017; Lardner et al, 2017).…”

Section: Impacts Of Integrated Crop–livestock Systems On Crop Productmentioning

confidence: 99%

“…Barley is a cool‐season annual forage that provided grazing opportunities similar to that of winter wheat (Kelln et al, 2011; McCartney et al, 2004). Low heat unit corn varieties which can be grown in western Canada have increased interest in corn production for grazing in cold regions (Jose et al, 2017; Lardner et al, 2017). In North Dakota, Karn et al (2005) found that beef cows grazing swathed western wheatgrass [ Pascopyrum smithii (Rydb.)…”

Section: Livestock Performance and Grazing Management In Integrated Cmentioning

confidence: 99%

Facilitating Crop–Livestock Reintegration in the Northern Great Plains

et al. 2019

View full text Add to dashboard Cite

Integrated crop–livestock systems (ICLSs) can help increase food production while benefiting soils and the environment. This review summarizes recent impacts of ICLSs on crop and livestock production and rural economics and discusses lessons learned in the northern Great Plains (NGP). Research on ICLS conducted in the NGP indicates that the crop residue grazing, swath grazing, and annual forage grazing can positively influence crop production; whereas, livestock performance varies with season, forage nutritive value, and grazing management. Furthermore, ICLSs can reduce the costs and risks of agricultural production. The success of ICLSs in NGP region depends on trade‐offs, planning, economic benefits, policies, regulations, community acceptance, and management skills. The ICLSs could play a strategic role in future agricultural production. The lessons learned from adopting ICLSs in the NGP include the lack of available land for fertilizer (manure) management, that to implement ICLS practices skills and knowledge must be maintained, and ICLS provides an entry point for young farmers and ranchers however capital is needed. These experiences and lessons could be valuable references for producers to adopt ICLSs in the NGP or other regions. Core Ideas Integrated crop–livestock systems positively affect crop production by improving soil health. Common integrated crop–livestock system management techniques can enhance the northern Great Plains crop production. Integrated crop–livestock system livestock performance is impacted by season, forage selection, and management. Integrated crop–livestock systems can increase economic benefits and reduce economic risks. Experiences and lessons in the northern Great Plains could be valuable for other regions to adopt integrated crop–livestock systems.

show abstract

“…With the introduction of low heat unit hybrids, there is a relatively new opportunity to use whole-plant corn in extensive grazing systems with beef cows (Lardner et al, 2012). The low heat unit hybrids can produce yields ranging between 9.4 and 12.0 t/ha (DM basis) in regions where corn growth was previously not feasible (Lardner et al, 2017). The nutrient content (9% CP, 70% TDN; Lardner et al, 2017) of the whole-plant corn should meet the dietary requirements for backgrounding calves, suggesting that these hybrids could serve as the forage source for backgrounding programs.…”

Section: Introductionmentioning

confidence: 99%

Use of extensive winter feeding systems for backgrounding beef calves and the effect on finishing

McMillan

Penner

McKinnon

et al. 2018

The Professional Animal Scientist

View full text Add to dashboard Cite

The introduction of low heat unit corn varieties in western Canada has led to questions on how this crop might fit into an extensive backgrounding program. Therefore, a 3-yr study was conducted to evaluate the effects of grazing standing whole-plant corn (Zea mays L. 'Pioneer P7443R') or swathed whole-plant barley (Hordeum vulgare 'Ranger') compared with barley hay fed in drylot pens on beef steer performance during backgrounding and feedlot phases. The effect of backgrounding system was also assessed during finishing when steers were fed diets based on barley grain or corn grain. Each yr, 120 Angus steers (BW = 250.5 ± 1.8 kg) were allocated to 1 of 3 replicated (n = 2) backgrounding systems: (1) field grazing swathed whole-plant barley (BSG; 11.2% CP, 60.6% TDN); (2) field grazing standing whole-plant corn (CG; 8.7% CP, 64.6% TDN); or (3) drylot (DL) bunk feeding of processed barley hay (10.9% CP, 57.2% TDN) for an average 78 d (42 to 95 d) trial. All calves received 2.5 kg/d of a range pellet supplement (16% CP, 78% TDN). Treatment groups were similar (P > 0.05) in final BW (295.8 ± 5.0 kg), ADG (0.59 ± 0.03 kg/d), and G:F ratio (0.187 ± 0.03 kg/kg).

show abstract

Evaluation of Low Heat Unit Corn Hybrids Compared to Barley for Forage Yield and Quality on the Canadian Prairies

Cited by 15 publications

References 19 publications

Evaluation of Cicer Milkvetch and Alfalfa Cultivars for Nutritive Value, Anti-Quality Factors and Animal Preference

Evaluation of Cicer Milkvetch and Alfalfa Cultivars for Nutritive Value, Anti-Quality Factors and Animal Preference

Facilitating Crop–Livestock Reintegration in the Northern Great Plains

Use of extensive winter feeding systems for backgrounding beef calves and the effect on finishing

Contact Info

Product

Resources

About