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<blockquote data-quote="ROB" data-source="post: 503754" data-attributes="member: 3467"><p>taken from green springs web site:</p><p></p><p><strong>The GSBT E-Test is one of the more advanced tools used to make bull selections. This is an individual feed intake efficiency test. GSBT can accurately measure within 10 grams what each bull on the system eats daily. Due to the design and sensitivity of the system bulls have access to feed at anytime and at any E-Test bunk, making the data gathered accurate and unaffected by bunk dominance or feed delivery systems.</strong></p><p></p><p>the testing i am referring to is not expected, rather it is actual. additionally once the test is completed you can compare actual feed intake to average daily gain. with this information i could select an animal which has an acceptable ADG while at the same time has an above average RFI. previously, i stated that i could look at RFI and not ADG...i should have stated that i could look at RFI in addition to the ADG to make sound decisions for bull selection, or in this case heifer replacements. up until now all i have looked at with respect to feed tests was the ADG. with these new tools available for use we have the ability to look even further. now we can accurately determine how many of the high ADG'ers are actually feed wasters. in the feedlot it has been noted that 'time is of the essence' - true statement. but in this day and age, to look at ADG without RFI is a costly practice. you can still have two animals that gain 5.0#/day and finish in the same amount of time, the difference is one animal might take an additional 150# of feed to get there.</p><p></p><p>on a previous post, it was noted that "cattle that convert high energy rations efficiently into beef don't always convert grass into beef efficiently." if that is the case, there are a lot of commercial cattlemen that pay a pretty premium for bulls that have performed well on feed tests - in hopes to sell a few extra pounds of backgrounded yearling calves.</p><p></p><p>ROB</p></blockquote><p></p>
[QUOTE="ROB, post: 503754, member: 3467"] taken from green springs web site: [b]The GSBT E-Test is one of the more advanced tools used to make bull selections. This is an individual feed intake efficiency test. GSBT can accurately measure within 10 grams what each bull on the system eats daily. Due to the design and sensitivity of the system bulls have access to feed at anytime and at any E-Test bunk, making the data gathered accurate and unaffected by bunk dominance or feed delivery systems.[/b] the testing i am referring to is not expected, rather it is actual. additionally once the test is completed you can compare actual feed intake to average daily gain. with this information i could select an animal which has an acceptable ADG while at the same time has an above average RFI. previously, i stated that i could look at RFI and not ADG...i should have stated that i could look at RFI in addition to the ADG to make sound decisions for bull selection, or in this case heifer replacements. up until now all i have looked at with respect to feed tests was the ADG. with these new tools available for use we have the ability to look even further. now we can accurately determine how many of the high ADG'ers are actually feed wasters. in the feedlot it has been noted that 'time is of the essence' - true statement. but in this day and age, to look at ADG without RFI is a costly practice. you can still have two animals that gain 5.0#/day and finish in the same amount of time, the difference is one animal might take an additional 150# of feed to get there. on a previous post, it was noted that "cattle that convert high energy rations efficiently into beef don't always convert grass into beef efficiently." if that is the case, there are a lot of commercial cattlemen that pay a pretty premium for bulls that have performed well on feed tests - in hopes to sell a few extra pounds of backgrounded yearling calves. ROB [/QUOTE]
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