This experiment was conducted to determine the effect of programming the rate of gain and delaying the first implant in feedlot steers on feedlot performance and carcass characteristics. Ninety-six growing steers (269 ± 16.2 kg) were assigned to 12 pens in a completely randomized design. Treatments were implant (Synovex-S; 20 mg estradiol benzoate and 200 mg progesterone; Fort Dodge Animal Hea...

Fifty-four individually fed crossbred steers were fed dry-rolled corn (DRC) and steam-flaked corn (SFC) based diets with and without 35% wet distiller’s grains plus solubles (WDGS) derived from corn to determine impacts of corn processing method and WDGS inclusion on animal performance and carcass characteristics. No interactions were detected for corn processing method and WDGS inclusion (P ≥ ...

Ractopamine hydrochloride (RAC) and zilpaterol hydrochloride (ZH) are beta-adrenergic agonists that improve growth performance and affect carcass characteristics. The objective of this study was to evaluate the comparative effects of RAC and ZH when fed to beef steers during the last 33 d of the finishing period. Three hundred crossbred beef steers (516 +/- 8 kg) were grouped by BW, BCS, and br...

twenty male raini goats with an average live weight of 30 ± 2.5 kg and 18 month of age. ,were used in a completely randomized design with 4 experimental diets and 5 replications to study effect of different levels by-pass(udp) protein(2.75, 4.86, 5.91 and 6.97 percent in dry matter) on growth and carcass characteristics. metabolismable energy (me) level of the all diets were similar (10.04 mj m...

Thirty-two Angus steers were used in a 140d feeding trial to examine the effects of ad libitum feed intake or a programmed rate of gain on feedlot performance and carcass characteristics. Ad libitum-fed steers had greater (P < .06) DMI, ADG, and feed efficiency from d 0 to 28, 0 to 56, and 0 to 84 than programmed-fed steers; however, no differences in ADG, DMI, or feed efficiency were detected ...

the diacylglycerol acyltransferase 1 gene (dgat1) was identified as a strong candidate gene affecting mutton quality traits in sheep. single nucleotide polymorphism creates a single base mutation (c to t) in agct site of endonuclease alui. dgat1 is one of the candidate genes to improve carcass characteristics in feedlot animals. in order to study area t487c in exon 17 of the dgat1 polymorphism,...

Foraging in stopover areas influences nutritional condition of birds during spring migration. Our purpose was to determine if body mass, percent carcass water, and serum biochemistry would predict energy reserves (carcass fat and protein) in northern pintails (Anas acuta) at a spring staging area, Lake St. Pierre in Québec, Canada (46 degrees 11 'N, 73 degrees 08 'W). Northern pintails were col...