The Effect of Early Vs. Normal Calf Weaning on Feedlot Performance and Herd Management PDF Download
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Author: Scott Fausti
Publisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 17
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Author: Scott Fausti
Publisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 17
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Author: Jennifer Marie Barker
Publisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 226
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Author: William T. Meteer
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Angus and Angus x Simmental calves (n=200) were randomly allotted to one of five dietary treatments at two locations: Early Wean Starch Diet (EWS), Early Wean Fiber Diet (EWF), Creep Fed Starch Diet (CFS), Creep Fed Fiber Diet (CFF), or Control (CON). Control calves were normal weaned and received no supplemental feed while they grazed with their dams. The diets fed to early-weaned and creep-fed cattle were formulated to be isonitrogenous. Early-weaned calves (133±21 days of age) were placed in the feedlot, while normal-weaned calves remained with their dams on pasture (2 or 3 replications per location). Creep feed was offered ad-libitum to CFS and CFF. After a 100 d treatment phase, calves were placed in the feedlot on a common diet. GrowSafe® was used to measure individual intake of all calves in the feedlot. In the treatment phase, early-weaned gained more than creep-fed (1.6 vs. 1.5 kg, P
Author: Zhijun Cao
Publisher: MDPI
ISBN: 3039436619
Category : Science
Languages : en
Pages : 208
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From birth to first calving, the replacement heifer undergoes tremendous changes anatomically as well as in feeding and management practices. The calf changes from being a pseudo-monogastric to a full ruminant within a period of two months. During the same period, the calf is fed colostrum, milk, or milk replacer, and starter with or without hay. Notably, the lifetime milk production and health of a dairy cow is highly dependent on early life nutrition and management of the calf and, subsequently, the heifer. Hence, animal scientists continue to investigate critical areas such as colostrum feeding, the level of liquid feeding, gut microbial succession, energy and protein levels, housing, health management, and their interactions with the animal in an effort to help dairy producers raise successful and sustainable dairy enterprises.
Author: Eric Arthur Bailey
Publisher:
ISBN:
Category :
Languages : en
Pages :
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We evaluated effects of preconditioning on performance and health of beef calves raised and finished in the Great Plains. In experiment 1, calves were preconditioned for 0, 15, or 45 d and vaccinated against BRD-causing pathogens 14 d before maternal separation or after feedlot arrival. During receiving and finishing, preconditioned calves had greater DMI and ADG than non-preconditioned calves; however, timing of BRD vaccination did not affect animal health. In experiment 2, calves were vaccinated against BRD pathogens 0, 1, 2, or 3 times during a 30-d preconditioning program. Vaccination for BRD, regardless of degree, improved health during preconditioning; however, DMI, ADG, and G:F during preconditioning, receiving, and finishing were unaffected by degree of vaccination. In experiment 3, calves were preconditioned for 30 d, shipped 4 h to an auction facility, commingled for 12 h, and transported 4, 8, or 12 h to a feedlot. Feedlot performance and health of beef calves were not affected by transport of up to 12 h following auction-market commingling. In experiment 4, beef calves were subjected to 1 of 3 ranch-of-origin preconditioning programs: drylot weaning + abrupt dam separation, pasture weaning + fence-line contact with dams, and pasture weaning + fence-line contact with dams + supplemental feed delivered in a bunk. Drylot-weaned calves gained more weight during preconditioning. Unsupplemented, pasture-weaned calves had the least ADG during receiving but had greater ADG during finishing and had carcass characteristics similar to other treatments. In experiment 5, we evaluated performance of early-weaned beef calves fed grain-based diets with DMI adjusted to achieve ADG of 0.45, 0.91, or 1.36 kg/d during an 84-d growing period. Calves fed at restricted rates did not exhibit improved G:F relative to full-fed counterparts. In addition, there appeared to be limitations associated with predicting DMI and ADG of light-weight, early-weaned calves fed a grain-based diet.
Author: Rodney A. Hill
Publisher: John Wiley & Sons
ISBN: 1118388240
Category : Science
Languages : en
Pages : 328
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Feed Efficiency in the Beef Industry provides a thorough and concise overview of feed efficiency in beef cattle. It frames the great importance of feed efficiency to the industry and details the latest findings of the many scientific disciplines that intersect and aim to improve efficient and sustainable production of nutritious beef. The vast majority of production costs are directly tied to feed. With increased demand for grains to feed a rapidly increasing world population and to supply a new demand for alternative fuels, feed costs continue to increase. In recent years, the negative environmental impacts of inefficient feeding have also been realized; as such feed efficiency is an important factor in both economic viability and environmental sustainability of cattle production. Feed Efficiency in the Beef Industry covers a broad range of topics ranging from economic evaluation of feed efficiency to the physiological and genetic bases of efficient conversion of feed to high quality beef. Chapters also look at how a fuller understanding of feed efficiency is leading to new selective breeding efforts to develop more efficient cattle. With wide-ranging coverage from leading international researchers, Feed Efficiency will be a valuable resource for producers who wish to understand the complexities, challenges, and opportunities to reduce their cost of production, for students studying the topic and for researchers and professionals working in the beef industry.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1002
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Author: Philipe Moriel
Publisher:
ISBN:
Category :
Languages : en
Pages : 159
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Experiment 2 demonstrated that EW heifers provided a high-concentrate diet for at least 90 d in drylot and EW heifers grazed on ryegrass pastures, had similar or greater growth performance than NW heifers. Furthermore, it provided evidence that early-exposure to a high-concentrate diet lead to metabolic imprinting effects, such as altered liver IGF-1 expression (during periods of similar nutritional management) and early puberty achievement of Bos indicus-influenced beef heifers. Calf weaning at the onset of the breeding season enhanced cow growth performance, and tended to enhance reproductive performance of multiparous cows.
Author: Mahmoud Makarechian
Publisher:
ISBN:
Category : Calves
Languages : en
Pages : 74
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Author: Angel Arturo Parra
Publisher:
ISBN:
Category :
Languages : en
Pages : 66
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