"The Impact of Prepartum Supplementation Strategy on Cow-Calf Performan" by J. A. Musgrave, Kacie L. McCathy et al.

Animal Science, Department of

 

Date of this Version

2024

Citation

2024 Nebraska Beef Cattle Report

UNL Beef, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln

Abstract

Implementation of minimal supplemental protein strategies during late gestation may have the potential to minimize any negative postweaning progeny performance while decreasing feed costs. A 3-yr study was conducted to evaluate the effects of mid- to late-gestation supplementation strategies on reproduction, cow body weight, and calf performance in May-calving mature range cows grazing upland native range. Supplementation was provided 2x weekly with treatments being 1) 05 lb per day of a 30% CP distillers-based supplement, 2) 1 lb per day of a 30% CP distillers-based supplement, 3) a negative control as a flexible supplementation strategy. The Flex strategy was developed to allow for brief and intermittent supplementation at 1 lb/d based on periods of acute environmental stress, such as snow cover, and is best described as flexible supplementation. Mid- to late-gestation supplementation strategy in May-calving cows had no effect on pregnancy rates or pre- and postnatal calf growth. Considering the cost for prepartum supplementation, feeding a protein supplement just during environmentally stressful periods during gestation appears to be a viable alternative to more conventional methods and reduces winter feed costs.

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