Two studies were conducted to determine the influence of CP degradability and supplementation frequency (SF) on ruminant performance N efficiency. Treatments included an unsupplemented control (CON) degradable intake protein (DIP; 82% CP) or undegradable (UIP; 60% provided daily, every 3 d, 6 d. Seven wethers (36+/-1 kg BW) used in digestibility study with DIP UIP treatments formulated meet requirements. Eighty-four Angus x Hereford cows (512+/-42 last third gestation for study. The...

Abstract Ground-based vegetation monitoring methods are expensive, time-consuming and limited in sample size. Aerial imagery is appealing to managers because of the reduced time expense increase One challenge aerial detecting differences among observers same imagery. Six analysed a set 1-mm ground distance for graminoid species composition important ground-cover characteristics. Kendall's coefficient concordance (W) was used measure agreement observers. The group six concordant when assessed...

Abstract Objectives of this experiment were to characterize the effects ram plane nutrition on body composition, concentrations hormones and metabolites, sperm characteristics, offspring outcomes. Mature Rambouillet rams (n = 24, BW 82.9 ± 2.63 kg) individually housed randomly assigned either a positive (POS; n 8), maintenance (MAINT; or negative (NEG; 8) for an 84-day feeding period. Rams fed common diet, with daily feed allocations adjusted weekly based weight (BW) achieve targeted gain...

Seven cannulated (rumen and duodenal) Angus × Hereford steers (264 ± 8 kg BW) consuming low-quality forage (5% CP; 61% NDF; 31% ADF) were used to determine the influence of CP degradability supplementation frequency (SF) on DMI nutrient digestion. Treatments included an unsupplemented control degradable intake protein (DIP) or undegradable (UIP) provided daily, every 3 d, 6 d. The DIP treatments (18% UIP) calculated provide 100% requirement, while UIP (60% isonitrogenous basis compared with...

The objectives of this research were to determine the influence protein supplementation frequency on cow performance, grazing time, distance traveled, maximum from water, distribution, DMI, DM digestibility, harvest efficiency, percentage events frequented, and CV for supplement intake cows low-quality forage. One hundred twenty pregnant (60 ± 45 d) Angus × Hereford (467 4 kg BW) used in a 3 Latin square design one 84-d period each three consecutive years. Cows stratified by age, BCS, BW...

Limited data are available regarding the influence of thiamine supplementation on incidence polioencephalomalacia (PEM) in lambs fed diets containing increased concentrations S diet (>0.7%). Therefore, our objective was to evaluate feedlot performance, carcass quality, ruminal hydrogen sulfide gas concentrations, and PEM a finishing 60% distillers dried grains with solubles (DDGS; DM basis). Two studies were conducted using completely randomized designs concentration supplementation. Study 1...

Abstract Background Managing genetic diversity is critically important for maintaining species fitness. Excessive homozygosity caused by the loss of can have detrimental effects on reproduction and production performance a breed. Analysis facilitate identification signatures selection which may contribute to specific characteristics regarding health, physical appearance breed or population. In this study, breeds with well-characterized traits such as fine wool (Rambouillet, N = 745),...

Journal Article Influence of rumen protein degradability and supplementation frequency on steers consuming low-quality forage: II. Ruminal fermentation characteristics Get access D. W. Bohnert, Bohnert *Eastern Oregon Agriculture Research Center, State University, Burns 2Correspondence: 67826-A Hwy 205, Burns, OR 97720(phone: 541-573-8910; fax: 541-573-3042; E-mail: dave.bohnert@oregonstate.edu). Search for other works by this author on: Oxford Academic PubMed Google Scholar C. S. Schauer,...

We hypothesized that a maternal diet greater in MP during the last third of gestation would yield improved offspring growth due to enhanced placental or mammary gland function. Our objective was determine how intake late affected ewe and performance from birth weaning ewes fed diets similar total energy. In yr 1, dietary treatments were applied at d 100 gestation, energy, contained 60% requirements (60MP1), 80% (80MP1), 100% (100MP1) on DM basis gestation. 2, energy (60MP2), (100MP2), 140%...

Five steers (491 +/- 21 kg BW) were used in an incomplete 5 x 4 Latin square with four 24-d periods to determine the influence of supplemental non-protein N (NPN) source and supplementation frequency (SF) on nutrient intake site digestion consuming low-quality grass straw (4% CP). Treatments (TRT) included unsupplemented control a urea- or biuret-containing supplement placed directly into rumen daily (D) every other day (2D) at 0700. The NPN treatments formulated provide 90% estimated...

Two experiments were conducted to evaluate perennial ryegrass straw as a forage source for ruminants. Experiment 1 evaluated digestion and physiological variables in steers offered containing increasing levels of ergot alkaloid, lolitrem B. Sixteen ruminally cannulated Angus × Hereford (231 ± 2 kg BW) blocked by weight assigned randomly one four treatments. Steers provided at 120% the previous 5-d average intake. Before feeding, soybean meal was (0.1% BW; CP basis) meet estimated requirement...

In sheep, embryonic and fetal death during pregnancy can account for 25% to 50% of the total number corpora lutea (and thus potential embryos). The objective this study was determine effects injectable oral Arg supplementation provided 14 d postbreeding on reproductive performance naturally stimulated fall lambing ewes. Rambouillet ewes ( = 210) were exposed rams equipped with marking harnesses induce cyclicity in April 2012. Upon estrus detection (d 0) randomly assigned, a completely random...

Abstract Rambouillet rams were managed on either a positive (POS; gain 12% body weight [BW]; n = 8), maintenance (MAINT; maintain BW; or negative (NEG; lose 8) plane of nutrition before breeding. Rams bred to ewes (n 10 per ram) that similarly throughout gestation, and lambs fed common diet postnatally. Two ewe (7.6 ± 0.02 mo age, BW 47.1 1.17 kg) from each sire selected within-pair, randomly assigned be for moderate (MOD, 0.11 kg/d; 23) accelerated (ACC, 0.20 22) rate 56 d. Ewe lamb was...

Objectives of this research were to compare animal performance with or without supplementation, effectiveness three intake limiters, and examine seasonal changes in nutritive value native range south-central North Dakota. Treatments included 1) control (CONT; no supplement); 2) hand-fed (HF) supplement, chemical limiter; 3) 16% salt (NACL); 4) 5.25% ammonium chloride sulfate (AS); 5) 7% calcium hydroxide (CAOH). Supplements based on wheat middlings, barley malt sprouts, soybean hulls...

The objective of this study was to evaluate the effects dried distillers grains with solubles (DDGS) on ram lamb feedlot performance, carcass characteristics, serum testosterone concentration, and semen quality. One hundred twenty lambs (40.4 ± 9.1 kg; Suffolk × western white face) were used in a completely randomized design determine DDGS performance characteristics. Rams allotted into one three dietary treatments (n = 4 pens/treatment; 10 rams/pen): 1) 0DDGS: 85% corn 15% commercial market...

Fine wool production is an important source of revenue, accounting for up to 13% total revenue in extensively managed sheep systems the United States. The Rambouillet are a predominant breed that excels quality characteristics. Understanding genetic basis characteristics would aid development genomic breeding strategies facilitate improvement.

Eighty Angus and x Simmental steer calves were used in a completely random design to determine the effect of rate BW gain during backgrounding period on subsequent feedlot performance, carcass characteristics, Warner-Bratzler shear force (WBSF), sensory analysis. Animals stratified by allotted randomly 1 10 pens (5 pens/treatment). Dietary treatments formulated for an ADG 0.91 kg/d [low (LG), 1.06 Mcal NE(g)/kg] diets 1.25 [high (HG), 1.19 NE(g)/kg]. Steers fed 70 d growing period. The LG...

The objective of the study was to determine if flaxseed treated with a formaldehyde-free process could increase n-3 fatty acid (FA) concentrations in lamb and steer muscle. Twenty-four lambs (initial BW 43.8 ± 4.4 kg) were randomly divided into 4 groups for 90-d trial. One treatment group (FLX) fed 136 g/d nontreated ground flaxseed; another (FLXT1) protect a-linolenic (ALA) from microbial hydrogenation; third (FLXT2) second fourth (CNTL) corn soybean meal similar CP DE levels as other...