Publications by authors named "Parker A Henley"
The objective was to determine effects of old and new rubber matting in a slatted, indoor cattle feeding facility on cattle growth performance, locomotion, and carcass characteristics. In experiment 1, fall-born Angus × Simmental steers (N = 207; body weight = 222 ± 38 kg) were blocked by weight and assigned to 32 pens. Pens were randomly assigned to 1 of 4 treatments: no matting/concrete (CONC1), 12-yr-old Animat Pebble matting (OLD1), new Animat Maxgrip matting (MG), and new Animat Pebble matting (PEB1).
View Article and Find Full Text PDFMature Simmental × Angus cows [ = 147; body weight (BW) = 590 ± 72 kg] were used to evaluate the effects of early weaning on subsequent parity calf growth performance and carcass characteristics. Cows were assigned to one of two treatments based on their previous calf's weaning age: early wean (EW) or conventional wean (CW). Dams assigned to the EW treatment had calves previously weaned at 88 ± 6 d of age, whereas dams assigned to the CW treatment had calves previously weaned at 185 ± 6 d of age.
View Article and Find Full Text PDFThis study evaluated the effect of heifer development system on body weight (BW), body condition score (BCS), fescue toxicosis symptoms, reproductive performance, and subsequent calf growth of fall-calving beef heifers. Angus × Simmental heifers [ = 399; 240 ± 20.0 kg initial BW; age = 252 ± 20 d] were stratified by BW and BCS and assigned to 1 of 12 groups in each of the two production years.
View Article and Find Full Text PDFThis study evaluated how corn supplementation and age of female affected body weight (BW), body condition score (BCS), artificial insemination (AI) pregnancy rate, and blood metabolites (nonesterified fatty acid [NEFA], β-hydroxybutyrate [BHBA], and blood urea nitrogen [BUN]) when grazing lush spring pasture. Angus and Angus × Simmental beef females ( = 361) were blocked by location, stratified by BW and BCS, and then were assigned to groups ( = 8 groups/treatment combination; 9-14 females/group). The study utilized a stratified, randomized complete block design with a 2 × 2 factorial arrangement of treatments.
View Article and Find Full Text PDFArticle Synopsis
- - This study examined the impact of a diet consisting of 40% modified wet distillers grains plus solubles (MWDGS) on the growth, hoof health, and reproductive traits of Simmental × Angus bulls over a 210-day period.
- - Bulls were divided into two groups: one group received a traditional corn-based diet while the other received the MWDGS diet, with evaluations conducted at various intervals to assess parameters like body weight and sperm quality.
- - Results indicated that bulls on the MWDGS diet had higher body weight and fat measurements at certain time points, but also exhibited a higher percentage of major sperm defects compared to the control group.