Effects of breed and wintering diet on heifer postweaning growth and development.

Granger, Amy; Wyatt, W. E.; Hembry, F. G.; Craig, W. M.; Thompson, Donald L.

doi:10.2527/1990.682304x

Cited by 10 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The decreased percentage of EXT heifers being pubertal was likely the result of several factors including growth rate, winter diet, possibly monensin supplementation, which was a function of diet quality, and other behavioral and environmental factors differing in each development system. These data agree with recent literature indicating reduced postweaning ADG resulting from lower diet quality, with or without moderate realimentation before breeding, reduces the percentage of heifers attaining puberty (Granger et al, 1990;Lalman et al, 1993;Buskirk et al, 1995Buskirk et al, , 1996Marston et al, 1995;Lynch et al, 1997;Ciccioli et al, 2005;Gasser et al, 2006). Martin et al (2008) indicated reducing the percentage of mature BW at breeding by approximately 6% resulted in a nonsignificant, 17% decrease in percentage of pubertal heifers at breeding.…”

Section: Resultssupporting

confidence: 81%

“…However, final pregnancy rate was not different (P = 0.38) between EXT and DL Nontraditional heifer development heifers. Nearly all previous research indicates postweaning BW gain restriction resulted in similar final pregnancy rates (Granger et al, 1990;Lalman et al, 1993;Buskirk et al, 1995;1996;Lynch et al, 1997;Funston and Deutscher, 2004;Ciccioli et al, 2005;Gasser et al, 2006;Martin et al, 2008). The percentage of heifers calving in the first 21 d was similar (P = 0.30; Table 7) between treatments and greater than 70% for the entire group, indicating heifers not becoming pregnant to AI became pregnant at the subsequent estrus.…”

Section: Resultsmentioning

confidence: 70%

See 1 more Smart Citation

Heifer development systems: Dry-lot feeding compared with grazing dormant winter forage1

Funston

Larson

2011

Journal of Animal Science

View full text Add to dashboard Cite

Two hundred ninety-nine Angusbased, nulliparous heifers (253 ± 2 kg initial BW) from 3 production years were utilized to compare traditional postweaning dry lot (DL) development with a more extensive winter grazing system utilizing a combination of corn residue and winter range (EXT). Heifers developed in the DL were offered a common diet after the weaning period for 208 d in yr 1, 194 d in yr 2, and 150 d in yr 3 until breeding. Heifers developed in EXT grazed corn residue for 135 d in yr 1, 106 d in yr 2, and 91 d in yr 3, and then fed in the DL until breeding (yr 1) or grazed dormant winter grass for approximately 60 d before being fed in the DL (yr 2 and 3). All 3 years, heifers were estrus synchronized, with timed AI performed in yr 1. In yr 2 and 3, estrus was detected and those detected in estrus were artificially inseminated approximately 12 h later. Heifers were exposed to bulls 10 d after the last AI for 60 d while grazing summer pasture. During the winter grazing period, EXT heifers gained less (P = 0.01) BW than DL heifers and EXT heifers had lighter (P = 0.02) BW at breeding. Fewer (P < 0.01) EXT heifers reached puberty before breeding. Conception to AI was not different (P = 0.23); however, AI pregnancy rate tended (P = 0.08) to be less in EXT heifers. Final pregnancy rates were not different (P = 0.38) between treatment groups. Although EXT heifers had lighter (P = 0.02) BW at pregnancy diagnosis; however, they did compensate with greater (P = 0.05) ADG after breeding, resulting in similar (P = 0.22) precalving BW. Winter development system did not influence (P > 0.10) percentage of calving in the first 21 d, calf birth date, and calf birth BW, or dystocia score. Pregnancy rate after the second breeding season was not different (P = 0.56) between treatments. Heifer development using extended winter grazing reduced (P < 0.01) the cost of producing a pregnant heifer by $45 compared with DL.

show abstract

Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 70%

Heifer development systems: Dry-lot feeding compared with grazing dormant winter forage1

Funston

Larson

2011

Journal of Animal Science

View full text Add to dashboard Cite

show abstract

“…Postweaning gain for both groups was lower than expected and may have been due to negative associative effects of the concentrate and forage diets. Granger et al (1990) observed decreases in DM, fiber, and CP digestibilities with supplementation of ground corn t o hay diets of weanling heifers. In addition, grazing of endophyte-infected tall fescue and muddy conditions may have contributed to decreased gains.…”

Section: Resultsmentioning

confidence: 81%

Increased postweaning gain of beef heifers enhances fertility and milk production1

Buskirk

Faulkner

Ireland

1995

Journal of Animal Science

View full text Add to dashboard Cite

Four hundred fifty-two (452) weanling heifer calves (192 +/- 23 kg) were used to determine the effect of postweaning weight gain on subsequent reproductive performance and lactation. Heifers grazed stockpiled tall fescue pastures and were fed a high (H) or low (L) amount of ground corn supplement (3.68 and 2.99 kg/[animal.d], respectively) during a postweaning treatment period of 136 d. Postweaning gain of heifers receiving L and H was .43 and .62 kg/d, respectively. These treatments resulted in a range of postweaning gain from .07 to 1.17 kg/d. Heifers receiving H were 26 kg heavier (P < .01), had .15 cm more fat thickness (P < .01), 5% greater pelvic area (P < .01), and tended (P = .08) to have greater hip height than heifers receiving L at yearling. More heifers in the H group were pubertal before the start of the breeding season (70.9 vs 61.3%) (P < .05). No significant differences were found in pregnancy rate or first-service calving rate between treatment groups. Mean milk production was 10% greater for H- than for L-fed heifers (P < .01) and resulted in heavier calves at 54, 104, and 153 d of age (P < .05). Regression analysis revealed that as weaning weight and postweaning gain increased, so did the probability for reaching puberty before the breeding season. Increasing weaning weight also increased the probability of calving to the first AI service. As heifer weaning weight and postweaning gain increased, subsequent milk production also increased. Increasing postweaning weight gain of lightweight heifers from .07 to 1.17 kg/d increased both reproductive and lactation performance.

show abstract

“…Durante a transição do regime de confinamento para pastagens, a mudança de dieta e período de readaptação da flora ruminal às novas condições de alimentação prejudicou as novilhas deste tratamento em maior magnitude. Granger et al (1990) observaram, em novilhas consumindo somente feno durante o inverno, ganhos 29% superiores em pastejo de azevém do que novilhas que receberam concentrados durante o inverno. O maior GMD observado em novilhas com menor GMD em fase anterior é denominado por Ryan (1990) de 'crescimento compensatório' e definido como uma taxa de crescimento superior à taxa de crescimento normal, observada algumas vezes após um período no qual uma restrição nutricional é imposta aos animais.…”

Section: Resultsunclassified

Sistemas de Alimentação Pós-Desmama de Bezerras de Corte para Acasalamento com 14/15 Meses de Idade

Rocha¹,

Lobato²

2002

R. Bras. Zootec.

View full text Add to dashboard Cite

RESUMO -Este trabalho foi conduzido com o objetivo de avaliar o desempenho de bezerras de corte submetidas a sistemas alternativos de alimentação, no primeiro período outono/inverno pós-desmama, por 88 dias, e, após este período, mantidas sobre pastagem melhorada, até o final do seu primeiro acasalamento, com 14-15 meses de idade. Os sistemas utilizados foram: pastagem-pastejo contínuo em pastagem cultivada de azevém (Lolium multiflorum Lam); suplementação-pastejo contínuo em pastagem natural e suplementação energético-protéica; confinamento-confinamento, a céu aberto, com silagem de sorgo + nitrogênio não-protéico (NNP). Após esse período, as bezerras pastejaram em conjunto pastagens naturais melhoradas compostas por azevém, trevo branco (Trifolium repens) e cornichão (Lotus corniculatus). Os dados foram coletados em uma Empresa Agropecuária, localizada em Dom Pedrito, RS, em 395 bezerras de corte pertencentes a três grupos genéticos: Hereford; 3/4 Hereford-1/4 Nelore; 5/8 Hereford-3/8 Nelore. Foram tomados registros de peso vivo (PV), ganho de peso médio diário (GMD) e condição corporal (CC). As bezerras mostraram comportamento semelhante quanto ao PV e GMD. A CC foi maior nos animais do grupo confinamento. No início e final da estação de acasalamento, novilhas alimentadas exclusivamente em pastagens tiveram maior PV e CC do que novilhas dos grupos suplementação e confinamento, que não diferiram entre si.Palavras-chave: pastagens melhoradas, silagem de sorgo, suplementação Post Weaning Feeding Systems for Beef Heifers to be Bred at 14/15 Months of AgeABSTRACT -The experiment evaluated the performance of beef heifers submitted to three alternatives of autumn-winter feeding systems, during 88 days, and after this period on improved pastures all together until the end of theirs first mating season, with 14-15 months of age. The systems were: Pasture-continuous grazing on cultivated annual ryegrass (L. multiflorum Lam); supplementationcontinuous grazing on natural pasture plus energy and protein supplementation; feedlot -feedlot, with sorghum silage plus non-proteic nitrogen (NNP). After this period, all heifers grazed together on improved natural pastures with annual ryegrass, white clover (Trifolium repens) and birdsfoot trefoil (Lotus corniculatus). These data were collected in a farm located in Dom Pedrito, RS, from 395 beef heifers from three genetic groups: Hereford; 3/4 Hereford -1/4 Nellore; 5/8 Hereford-3/8 Nellore. Live weight (LW), body conditions score (BCS) and live weight daily gains (LDG) were recorded. No differences could be detected among systems for LW and LDG. Feedlot heifers had greater BCS. At the beginning and end of the mating season, heifers from pasture group were heavier and had greater BCS than heifers from feedlot and supplementation.

show abstract

Effects of breed and wintering diet on heifer postweaning growth and development.

Cited by 10 publications

References 0 publications

Heifer development systems: Dry-lot feeding compared with grazing dormant winter forage1

Heifer development systems: Dry-lot feeding compared with grazing dormant winter forage1

Increased postweaning gain of beef heifers enhances fertility and milk production1

Sistemas de Alimentação Pós-Desmama de Bezerras de Corte para Acasalamento com 14/15 Meses de Idade

Contact Info

Product

Resources

About