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Showing 1 to 13 of 13 for “"Beef Cow-calf"”.
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Economic analyses of the effects of calving season on beef cow-calf-forage systems
Important implications of the study are: beef cow-calf production is competitive over a wide range of beef prices and it may increase farm returns to feed small amounts of corn silage rather than grow additional pasture even when the weaned steer calf-corn ratio is quite low.
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Prevalence of antibodies to Bovine Leukemia virus, Neospora caninum and risk factors, and biosecurity practices in beef cow-calf herds in Canada.
A total of 4,778 cows from 179 herds were tested for antibodies to N. caninum using a commercially available ELISA. Neospora caninum herd-level seroprevalence ranged from 25.0% to 75.9% (a herd was considered positive with ≥ 2 cows testing positive). The true cow prevalence was estimated as 5.2% …
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Effects of housing beef cow-calf pairs on dry lot vs pasture on cow performance as well calf performance and behavior through feedlot receiving
… were to analyze the effects of housing cow-calf pairs in dry lots (DL) or pasture (PAST) on cow performance and reproduction and calf performance and behavior through the receiving phase. Simmental × Angus (n = 108; 87 ± 11.5 d postpartum) spring-calving cows were stratified by age, BW, …
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Profitability Analysis of Forage Based Beef Systems in Appalachia
… Virginia is livestock production, particularly beef cow calf operations. However; topography and land holding patterns have resulted in a majority of small farms operating part time on less than 150 acres. These farms, while abundant, are not necessarily profitable. Management intensive grazing …
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Strategies to improve fertility of Bos taurus beef females enrolled in estrous synchronization protocols
… (ES) protocols enhances profitability of beef cow-calf operations by improving percentage of cows pregnant early in the breeding season and increasing kg of calf weaned per cow exposed. Many factors, however, influence the fertility of cattle enrolled to ES protocols. The overall goal of …
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Effects of fescue cultivar on performance of beef cows grazed on summer stockpiled tall fescue pastures
… pastures and the performance of fall-calving beef cow/calf pairs stocked on each cultivar. Fescue cultivars used were KY-31 and MaxQ for E+ and NE treatments, respectively. Pregnant Simmental x Angus cows (128 total, 64 each yr) were stratified by BW, BCS, and expected calving date and then …
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Nutrient Restriction Effects on Ovulatory Follicle and Corpus Luteum Development and Progesterone Production of Bos taurus Cows
… strongly impacts efficiency and profitability of beef cow-calf operations. The objective of this study was to determine if nutrient restriction impacts ovulatory follicle size and corpus luteum (CL) development and function of Bos taurus cows enrolled in estrous synchronization. A total of 26 …
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Changes in vaginal microbiome of beef cows enrolled in estrous synchronization protocols and its relation to fertility
… (ES) is a valuable technology that can help beef cow-calf producers to overcome infertility caused by prolonged anestrus. Protocols for ES that use progesterone (P4) supplementation are of particular value to cows with prolonged postpartum anestrus as P4 triggers them to begin cycling and …
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Estimating diagnostic test performance and examining effective testing strategies for the control of Johne's disease in western Canadian cow-calf herds
… disease is of increasing importance to the beef cow-calf sector due to the ongoing consolidation of cow-calf herds in western Canada resulting in greater risk of infectious disease transmission. This thesis aims to address a gap in the current literature related to the performance of …
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The effects of creep feed duration in a drylot system on cow performance as well as calf performance, ruminal fermentation characteristics, and carcass traits
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Development of a multi-breed heifer pregnancy genetic evaluation in beef cattle
… a primary influence on the profitability of a beef cow-calf enterprise. Reproductive rates determine the number of calves born and thus influence the amount of beef product produced at the commercial level driving income for cow-calf operators. Heifer fertility then is an economically relevant …
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Biosecurity and risk analysis for cow-calf enterprises: a simulation model for Bovine Viral Diarrhea Virus
… for Bovine Viral Diarrhea Virus (BVDV) on cow-calf farms. Where possible, risk distributions were defined in the course of a critical literature review covering all publications since 1990 relevant to BVDV on cow-calf farms. The prevalence of persistent infections (PIs) in adult cows was …
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Economic Pasture-Based Cow-Calf Systems for Appalachia
Pasture-based beef production is well-suited for the Appalachian region of the United States. This research investigated pasture, beef cattle, and economics components within the cow-calf sector of pasture beef production, and presents implications of their interplay for the vitality of the whole …