0016 Growth and reproductive performance of yearling beef heifers implanted with Revalor G in the Nebraska Sandhills

Genetic parameters for growth, reproductive performance, calving ease and suckling performance in beef cattle heifers

There is considerable concern about the consequences on fitness-related traits of using narrow breeding objectives for production traits. The aim of this study was to assess the potential consequences of selection for growth in French beef cattle breeds by estimating genetic correlations between growth, reproduction, calving and suckling traits of Charolais, Limousin and Blonde d’Aquitaine heif...

Reproductive Management of Beef Heifers

Optimising reproductive performance of beef cows and replacement heifers.

A reproductively efficient beef cow herd is fundamental to meeting the protein and specifically, red meat demand of an ever increasing global population. However, attaining a high level of reproductive efficiency is underpinned by producers being cognisant of and achieving many key targets throughout the production cycle and requires significant technical competency. The lifetime productivity o...

Nonstructural carbohydrate supplementation of yearling heifers and range beef cows.

A digestion study with 28 yearling heifers (428 +/- 9.9 kg; Exp. 1) and a 2-yr winter grazing trial with 60 crossbred cows (552 +/- 6.9 kg; Exp. 2) were used to determine the effects of level of nonstructural carbohydrate (NSC) supplementation on intake and digestibility of low-quality forage. Treatments were as follows: 1) control, no supplement; 2) 0.32 kg of NSC (1.8 kg/d of soybean hulls an...

Effects of Metabolic Imprinting on Growth and Reproductive Performance of Early-weaned Beef Heifers

This study evaluated the effects of calf management following early weaning (EW) on growth and reproductive performance of beef heifers. On d 0, Brahman x British heifers (n = 40; body weight [BW] = 187 ± 37 lb; age = 69 ± 12 d) were stratified by age and BW, and randomly assigned to be normally-weaned on d 177 (NW), or 1 of 3 EW treatments: (1) EW and grazed on ryegrass pastures for 67 d then ...