The objectives of this study were to quantify the phenotypic variation in residual feed intake (RFI) in pregnant beef heifers offered a grass silage diet and to characterize their productivity. Seventy-three pregnant (mean gestation d 198, SD = 27 d) Simmental and Simmental × Holstein-Friesian heifers (mean initial BW 548, SD = 47.5 kg) were offered grass silage ad libitum. Heifer DMI, BW, BCS,...

The objective of this study was to assess the effects of restricting access time to pasture and time of grazing allocation on grazing behaviour, daily dry matter intake (DMI), rumen fermentation, milk production and composition in dairy cows. Twenty-one autumncalving Holstein cows were assigned to one of the following 3 treatments: providing access to a daily strip of pasture for either 8 h bet...

The objective of this study was to examine the effect of different forage and supplement combinations on forage and supplement intake and ruminal parameters in steers. Six ruminally fistulated steers were assigned to 1 of 4 treatments during 4 different data collection periods. Treatments were 1) Hay +wet brewers grains (WBG); 2) Hay +dried distillers grains (DDG); 3) round bale silage (RBS) + ...

A 2-yr study was conducted to confirm that managed pastures can provide Holstein steers adequate P to meet their daily requirement. Treatments offered were trace mineralized salt with or without additional P. In the first year, 80 Holstein steers (248 kg of BW) were assigned to 4 grazing groups. Treatments were trace mineralized salt only or a 67:33 mixture of trace mineralized salt and dicalci...

Fat supplements based on palmitic acid (PA) or stearic (SA) are expected to have different effects milk production and nutrient metabolism in lactating dairy cows. In this study, the of prilled fat containing levels PA SA were tested 12 high-producing multiparous cows (pretrial yield = 53.4 ± 8.7 kg/d; mean SD) arranged a 4 × Latin square design with 21-d periods. Treatments control (CON; no su...

to evaluate the effects of wheat processing and dietary lipid sources on feedlot performance, carcass characteristics and fatty acids profile in meat of fattening calves, a number of 28 holstein male calves averaging in weight of 296±56kg were randomly allotted in four treatments (7 steers each). the study was conducted in a 2 × 2 factorial arrangement (two methods of wheat processing: steam fl...

Abstract We examined the effects of dietary supplementation Saccharomyces cerevisiae-based microbial additive containing fermentation products multiple micro-organisms on health and performance newly weaned beef steers during a 35-d receiving period. Crossbred (n = 80; 12-hour post-weaning; 206 ± 12 kg BW) were stratified by BW into 4 pens (20 per pen) such that each pen had similar at beginnin...

Most prediction equations of feedlot performance cover average daily gains (ADG) below 1.5 kg/d. The question is whether these equations would be accurate for higher ADG. Medium-to-large-framed weanling and yearling steer calves were fed individually using a transponder-electronic gate system in three feedlot trials and fed in groups in two trials. Average daily gain ranged from .9 to 2.1 kg. S...

Twenty-four 35-day-old lambs were distributed to a completely randomized design with 3 treatments to study the effects of number of feeding buckets per pen on performance, haematology and behaviour indicators. Treatments consisted of 8 (T1), 4 (T2) or 2 (T3) feeding buckets/pen (8 lambs/pen). During the experiment, concentrate was fed at 08:30 in individual feeders. Daily dry matter intake (DMI...

Records from 7 studies conducted during 1999 to 2005 were utilized to assess the effects of environmental factors on daily water intake (DWI) of finishing cattle. Data from unshaded feedlot pens (up to 24 pens utilized per study; 6 to 9 animals·pen(-1)) containing predominantly Angus crossbred cattle were obtained by dividing total water intake by the number of animals utilizing that waterer. E...