Effects of animal and supplement characteristics on average daily gain of grazing beef cattle.

Abstract

Effects of animal gender and age, use of a growth stimulant, and supplementation with grain alone or grain plus other substances on ADG by growing beef cattle grazing bermudagrass paddocks with sod-seeded rye, wheat, and ryegrass were determined. Two grazing experiments (Exp. 1: late winter through mid-spring; Exp. 2: late spring through mid-summer) were conducted. Experiment 1 used 96, 12- to 13-mo-old Simmental-cross calves (heifers, 240 kg; steers, 272 kg), half of which were implanted with zeranol. Within each implant treatment, cattle received no supplement or .5% BW (DM) of ground corn alone or plus a mix of protein meals, zinc sulfate, thiamin-HCl, or salt. Daily gain was higher (P less than .05) with than without supplementation and was similar (P greater than .10) among supplement treatments. In Exp. 2, 96 crossbred beef steers, approximately 7 (230 kg) or 15 mo old (250 kg), were not supplemented (control) or received .5% BW (DM) of ground corn on d 1 to 84 (C-C), corn plus a protein meal mix on d 1 to 84 (CP-CP), corn on d 43 to 84 (O-C), corn plus the protein meal mix on d 43 to 84 (O-CP), or corn on d 1 to 42 and corn plus the protein meal mix on d 43 to 84 (C-CP). Daily gain on d 1 to 84 was affected (P less than .05) by supplement, age, implant, and the supplement x implant interaction (nonimplanted: .37, .56, .68, .40, .49, and .49; implanted: .37, .62, .54, .49, .70, and .71 kg for control, C-C, CP-CP, O-C, O-CP, and C-CP, respectively).

Effect of supplementation on the performance of grazing Belgian Blue double-muscled heifers

“…Supplementing Simmental crossbred heifers and steers grazing bermudagrass with a mixture of 60.6% feather meal, 28.3% corn gluten meal and 11.1% blood meal (0.063% of BW) in addition to supplemental corn (0.437% of BW) only nominally (P . 0.05) enhanced daily gain up to 0.75 kg compared with 0.69 kg for corn supplemented (0.437% of BW) animals (Goetsch et al, 1991). Similar results from the same authors were reported when only crossbred steers were involved in another experiment.…”

“…2. The significant effect of the protein supplement in our experiment is in contradiction with the results of Goetsch et al (1991), but can be explained by the higher protein requirement of double-muscled animals (Fiems et al, 1998). Consequently, there was a greater response to the extra protein in our experiment.…”

“…Furthermore, it is assumed that the increased protein requirement of BBDM heifers is not met, as shown previously for BBDM bulls (Fiems et al, 2002a). Feeding 1.41 kg corn DM daily (0.5% of BW) to Simmental crossbred steers and heifers, weighing initially 272 and 240 kg, respectively, resulted in a mean average daily gain of 0.69 kg (Goetsch et al, 1991). Gadberry et al (2004) reported a daily gain of 0.83 kg for crossbred heifers, weighing initially 189 kg, grazing winter-annual pasture and supplemented at 1% of BW.…”

Suplementação energética para vacas de descarte de diferentes idades em terminação em pastagem cultivada de estação fria sob pastejo horário

“…Conforme citado por GOETSCH et al (1991), a suplementação de animais mantidos em pastagem com alimentos rapidamente fermentáveis no rúmen pode melhorar o desempenho animal por meio de melhor aproveitamento do nitrogênio da forragem, incremento da produção de proteína microbiana e aumento do propionato e o total de ácidos graxos voláteis. Também, segundo PASCOAL e RESTLE (1998), os concentrados energéticos, por apresentarem alto teor de MS, alta velocidade de passagem pelo rúmen, alta digestibilidade e boa palatabilidade, podem favorecer o desempenho animal.…”

088 Evaluation of initial body weight and supplementation levels on health and performance of newly received stocker calves

“…As previously mentioned, Southeastern cattle operations add cheap gain by utilizing high quality cool season forages. Supplementing forage has been shown to improve gain on multiple occasions (Coelman et al, 1976;Goetsch et al, 1991;Moore et al, 1999;Scholljegerdes and Kronberg, 2010).…”