Invited Review: Effects of selection for milk production on cow-calf productivity and profitability in beef production systems

Mulliniks, J. T.; Beard, J. B.; King, Tasha M.

doi:10.15232/aas.2019-01883

Cited by 17 publications

(11 citation statements)

References 1 publication

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“… Beal et al (1990) identified a correlation between individual milk production and preweaning calf growth, supporting the increase that was observed in preweaning ADG in the current study. This was reflected in adjusted 205-d calf weaning BW increase ( P < 0.01; Table 2 ) of 6.6 kg of calf BW per kg increase of milk production, which is slightly lower than the gain of 7.89 kg reported by Mulliniks et al (2020) . In contrast, Edwards et al (2017) reported no differences in calf BW after ~day 58 postpartum, which may be due to differences in forage quality consumed by the suckling calves.…”

Section: Resultsmentioning

confidence: 71%

Impact of cow milk production on cow–calf performance in the Nebraska Sandhills

King

Musgrave²,

Funston³

et al. 2020

Translational Animal Science

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Section: Resultsmentioning

confidence: 71%

Impact of cow milk production on cow–calf performance in the Nebraska Sandhills

King

Musgrave²,

Funston³

et al. 2020

Translational Animal Science

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“…Beal et al (1990) identified a correlation between individual milk production and preweaning calf growth, supporting the increase that was observed in preweaning ADG in the current study. This was reflected in adjusted 205-d calf weaning BW increase (P < 0.01; Table 2) of 6.6 kg of calf BW per kg increase of milk production, which is slightly lower than the gain of 7.89 kg reported by Mulliniks et al (2020). In contrast, Edwards et al (2017) reported no differences in calf BW after ~day 58 postpartum, which may be due to differences in forage quality consumed by the suckling calves.…”

Section: Preweaning Calf Performancementioning

confidence: 84%

263 Impact of cow milk production on cow-calf performance in the Nebraska Sandhills

Mulliniks¹,

King

Musgrave³

et al. 2020

Journal of Animal Science

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As cow-calf producers focus on greater weaning weights, selection for increased production parameters including milk production and weaning weight have become prevalent. However, increased cow-calf production may not be captured due to environmental conditions and resource availability. A retrospective analysis was conducted to model the impact of milk production on utilizing data collected from a March calving herd (n = 348) from 2000 to 2018 in the Nebraska Sandhills. The objective of this study was to determine the impact milk production has on subsequent cow reproductive performance and calf performance throughout the pre- and post-weaning phases. Cow body weight (BW) and cow age increased (P < 0.01) average milk production throughout the lactation period with body condition score (BCS) decreasing (P < 0.01) as milk production increased. Pregnancy rate and subsequent calf birth date were not influenced (P ≥ 0.80) by level of milk production. Increasing dam milk production resulted in increased (P < 0.05) calf pre-weaning ADG and adjusted 205-d calf weaning BW. In addition, dam milk production positively influenced (P > 0.05) steer progeny final live calf BW and hot carcass weight (HCW). All other post-weaning performance and carcass characteristics were not influenced (P > 0.05) by dam milk production. This study indicates for each additional kg of milk production calf weaning BW increased 6.6 kg. The greater adjusted 205-d calf weaning BW was maintained through the feeding period resulting in greater final live BW and HCW.

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“…Additionally, the effect of age on milking performance could play a role on WW. Andersen et al (2020) reported a significant difference in milking output between young and mature Hereford × Angus crosses and Angus cows, with young cows averaging 6.6 kg/d and mature cows producing 8.2 kg/d, although the impact of milk productivity on calf WW is inconsistent ( Mulliniks et al, 2020 ).…”

Section: Resultsmentioning

confidence: 99%

Cow efficiency: modeling the biological and economic output of a Michigan beef herd

Thompson

Beck

Buskirk

et al. 2020

Translational Animal Science

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In recent decades, beef cattle producers have selected cattle for biological traits (ie. improved growth) to maximize revenue, leading to an increase in average cow body size. However, matching cow size to the production environment would allow producers to maximize productivity and economic returns per unit of land. This may help meet the goals of sustainable intensification, but environmental complexity and varying cow-calf production systems dictates a regional approach. The objective of this experiment was to examine the biological efficiency and economic returns of a Northern Michigan cow-calf system. We hypothesized that biological efficiency and economic returns would decrease with increasing cow body size. Data was collected from a Red Angus cow herd located at the Lake City AgBio Research Center in Lake City, MI from 2011 to 2018 on cow age, weight, and body condition score at weaning, and subsequent 205 d adjusted calf weaning weight (WW), sex, and yearling weight. Biological efficiency was defined as WW as a percentage of cow body weight (DBW). Enterprise budgeting techniques were used to calculate expected net returns from 2011 to 2018 after classifying cows into 11 BW tiers at 22.67 kg intervals beginning at 430.83 kg. Forward looking net present value was calculated using the same tier system, for a 10-year production cycle with the baseline being a 200 d grazing season. Weaning weight increased with increasing DBW (P < 0.01), but the percentage of cow body weight weaned was reduced by -38.58 × Ln(DBW) (P < 0.01). This led to cows weaning 26.38 kg/ha more with every 100 kg drop in DBW. Expected net returns from 2011-2018 did not differ by DBW tier on a per cow basis but did on a per ha basis with a decrease in $10.27/ha with each increase in DBW tier (P < 0.01). Net present value was maximized in the baseline scenario at 453.51 kg DBW and decreased in value as DBW increased. These results suggest that for a Northern Midwestern cow-calf herd, comparatively lighter cows provide a higher economic value on a land basis.

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Invited Review: Effects of selection for milk production on cow-calf productivity and profitability in beef production systems

Cited by 17 publications

References 1 publication

Impact of cow milk production on cow–calf performance in the Nebraska Sandhills

Impact of cow milk production on cow–calf performance in the Nebraska Sandhills

263 Impact of cow milk production on cow-calf performance in the Nebraska Sandhills

Cow efficiency: modeling the biological and economic output of a Michigan beef herd

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