Three experiments using 864 crossbred feeder pigs were conducted to determine the effects of fat sources and a feed flavor in 3-wk receiving diets and a reduced nocturnal temperature regimen on commingled feeder pig performance. In Exp. 1, there was no response to a feed flavor on overall ADG or ADFI. Commingled pigs offered receiving diets containing 5% blended vegetable oil (5B) or 5% tallow ...

Objectives of this study were to characterize feed efficiency traits and examine phenotypic correlations with performance, ultrasound, and feeding behavior traits in growing bulls. Individual DMI and feeding behavior were measured in Angus (n = 214) and Brangus (n = 26) bulls (initial BW 368.4 ± 46.1 kg) fed a corn silage based diet (ME = 2.78 Mcal/kg) using a GrowSafe feeding system. DMI and 1...

Lambs were assigned to a 2x2 factorial design with corn or barley fed either whole or rolled. Hay was fed for ad libitum intake while concentrates were fed in similar amounts. Dry matter intake of hay, ADG, the gain:feed ratio, and warm carcass weight (WCW) were higher (P<0.05) for lambs fed corn than for those fed barley. Cereal processing had no effect (P>0.05) on hay dry matter intake, ADG, ...

the genetic parameters and (co) variance components of body weight at birth (bw), weaning (ww) and six months of age (bw6) and average daily gain (adg) pre and post-weaning of afshari sheep were estimated using restricted maximum likelihood (reml) methodology and animal model implemented in dfreml software. the likelihood ratio test (lrt) was used to compare the models. year of birth, age of mo...

OBJECTIVE To compare serologic testing with slaughter evaluation in assessing effects of subclinical infection on average daily weight gain (ADG) in pigs. DESIGN Cohort study. ANIMALS 18 cohorts (30 to 35 pigs/cohort) of pigs on/farms. PROCEDURE Blood samples were collected, and pigs were weighed at 8, 16, and 24 weeks of age. Sera were tested for antibodies to porcine reproductive and re...

The objectives of this study were to determine the efficacy of various doses of rbST on ADG and feed efficiency (FE) and to describe carcass composition changes in finishing beef steers. In Exp. 1, 96 crossbred beef steers (393 kg) received daily i.m. injections of buffer or 33, 100, or 300 micrograms/kg of BW of rbST (0ST, 33ST, 100ST, 300ST). In Exp. 2, 200 crossbred beef steers (417 kg) rece...

Our objective was to estimate genetic parameters for feed intake, feeding behavior, and ADG in composite ram lambs ((1/2) Columbia, (1/4) Hampshire, (1/4) Suffolk). Data were collected from 1986 to 1997 on 1,239 ram lambs from approximately 11 to 17 wk of age at the U.S. Meat Animal Research Center near Clay Center, NE. Feeding equipment consisted of an elevated pen with an entrance chute that ...

Interactions between the Wiskott-Aldrich (WAS) protein (WASp), small GTPases, and the cytoskeletal organizing complex Arp2/3 appear to be critical for the transduction of signals from the cell membrane to the actin cytoskeleton in hematopoietic cells. This study shows that Fcgamma-receptor (FcgammaR)-mediated phagocytosis is impaired in WASp-deficient peripheral blood monocytes, and that in mac...

Two separate animal trials were conducted to evaluate the coincidence of dry matter intake (DMI) and average daily gain (ADG) predicted by the Cornell Net Carbohydrate and Protein System (CNCPS) and observed actually in crossbred growing bulls kept in a traditionally confined feeding system in China. In Trial 1, 45 growing Simmental×Mongolia crossbred F1 bulls were assigned to three treatments ...