scholarly journals 377 Validation and improvement of a monitoring system overtime and its overall capabilities

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 138-138
Author(s):  
Tracy D Jennings ◽  
Jason Nickell

Abstract Automated animal monitoring is a growing segment in animal agriculture. These technologies capture biometric data from numerous parameters such as facial recognition, rumination, body temperature, and animal movement. The goal of automated animal monitoring technologies is to provide a 24 h perspective on an individual animal. These devices can offer valuable information pertaining to animal health, location, locomotion, animal behavior, phenotypic traits, and reproductive cycles. Devices collect data in various forms, such as counting steps, G.P.S. coordinates, triangulation, or XYZ coordinates. Raw data (e.g. step counts, XYZ coordinates) are then analyzed with proprietary algorithms to provide information in a usable format to the consumer. However, the development of these algorithms require thousands of hours of observation. For example, thorough visual observation of individual animal behaviors (e.g. rumination and eating time) can be identified based upon accelerometer movement. However, these calculated behaviors must then be validated through observation to optimize accuracy. Accelerometer-based devices are common in the dairy industry and growing in popularity in the beef industry for monitoring health and detecting estrus. Twenty-four-hour observation provides livestock producers greater insight than does once or twice daily observations. However, the usefulness or reliability of a technology requires evaluation of outcomes based on sensitivity and specificity of the test. The choice to optimize sensitivity or specificity is dependent on the desired outcome of the end user. For example, by increasing sensitivity in an animal health monitoring system, more truly ill animals will be identified, but more false positives will be generated, resulting in more animal treatments and elevated treatments costs. Conversely, increasing specificity, sick animals will be missed, but treatment costs will be reduced. Ultimately, developing an automated animal monitoring system that meets consumer expectation is the goal; however, information interpretation and evaluation will still be necessary by the end user.

Livestock ◽  
2021 ◽  
Vol 26 (1) ◽  
pp. 46-50
Author(s):  
David Harwood

Iceberg diseases are recognised across ruminant species, and their impact on individual animal health and welfare, and their economic impact at herd or flock level should not be underestimated. This group of diseases are characterised by the variety of stages of infection present when disease is established from clinically obvious cases (the ‘tip’ of the iceberg) through differing stages of early clinical disease to those infected yet clinically healthy. This article will explore iceberg diseases that can be identified in goats whether kept for profit, hobby, or pleasure.


1996 ◽  
Vol 40 (2) ◽  
pp. 278 ◽  
Author(s):  
Kathryn H. Christiansen ◽  
David W. Hird ◽  
Kurt P. Snipes ◽  
Cyrus Danaye-Elmi ◽  
Charles W. Palmer ◽  
...  

1990 ◽  
Vol 8 (2-3) ◽  
pp. 203-214 ◽  
Author(s):  
M.D. Salman ◽  
M.E. King ◽  
T.E. Wittum ◽  
C.R. Curtis ◽  
K.G. Odde ◽  
...  

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 212-213
Author(s):  
Chanda Engel ◽  
Gary Tibbetts ◽  
Mark Branine

Abstract A 42-d research study evaluated effects of feeding beef steers increasing levels of dietary Zn from Zn methionine (AAC-Zn; ZINPRO, Zinpro Corporation, Eden Prairie, MN) with or without supplemental Cu from Cu amino acid complex (AAC-Cu; Availa Cu, Zinpro Corp.) concurrently with ractopamine hydrochloride (RAC; Optaflexx, Elanco Animal Health, Greenfield, IN). One hundred-twenty steers (mean BW = 624 kg), ≤ 50 d from projected harvest were randomized to three pens (40 steers/pen) equipped with GrowSafe Systems (Calgary AB, Canada) feed bunk technology. Each pen was assigned to one of three treatment diets: 1) basal finishing diet + 30 mg Zn/kg DM from AAC-Zn (CON); 2) basal finishing diet + 90 mg Zn/kg DM from AAC-Zn (AAC-Zn90); or 3) AAC-Zn90 diet + 10 mg Cu/kg DM from AAC-Cu (AAC-Zn/Cu). Following allocation to treatments, cattle were acclimated to pen cohorts and GrowSafe feed bunks for 7 days. All steers were fed 300 mg RAC∙hd-1∙d-1 starting 35 d prior to harvest. Individual feed intake measurements began with RAC feeding and continued for 35 d until cattle were shipped for harvest. Carcass data were collected from each steer. Data were analyzed with individual animal as the experimental unit using PROC MIXED and PROC GLIMMIX procedures of SAS 9.4 (SAS Institute, Cary, NC). Numerically AAC-Zn90 fed cattle had heavier carcass weights than CON and AAC-Zn/Cu. Steers fed AAC-Zn90 had greater (P = 0.02) marbling scores compared to AAC-Zn/Cu. Steers fed AAC-Zn90 had lower backfat thickness (P = 0.02) and numerically greater marbling scores compared to CON. A biphasic program of feeding a lower level of AAC-Zn for the duration of the finishing phase followed by an increased rate of AAC-Zn during RAC feeding may optimize overall live and carcass response and improve total individual animal value.


Ecology ◽  
2017 ◽  
Vol 99 (1) ◽  
pp. 217-223 ◽  
Author(s):  
Joseph D. Bailey ◽  
Jamie Wallis ◽  
Edward A. Codling

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