Relationship between Body Composition and Reproduction in Heifers

Date
2002-01-01
Authors
Minick, Jennifer
Wilson, Doyle
Rouse, Gene
Hassen, Abebe
Pence, Mel
Sealock, R.
Hopkins, Steven
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Altmetrics
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Abstract

Carcass and reproductive data including scan weight, ribeye area, rump fat, 12-13th rib fat and percentage intramuscular fat and reproductive tract scores (RTS) at 344 days were collected on 180 1998-born and 70 1999-born Angus heifers to determine the relationship between these traits. 1998-born heifers with higher RTS tended to be heavier and have more rump fat at 405 days (P < .05). Heavier heifers and heifers with more rump fat had higher RTS when adjusted to 395 days (P < .05). 1999-born heifers showed a similar pattern, with heavier heifers having higher RTS (P < .05). Rump fat was not as significant for 1999-born heifers compared with 1998-born heifers. Heavier heifers with more rump fat are more likely to have more mature reproductive tracts at breeding.

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ASL R1769
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