Effect on pig performance of feed restriction during the growth period

Daza, A.; Rodríguez, Ileana; Ovejero, I.; López‐Bote, C. J.

doi:10.5424/sjar/2003014-42

Cited by 17 publications

(29 citation statements)

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“…These unexpected results, which were owing to reductions in ADG and G : F ratio in the RE piglets receiving PE compared with the piglets given water without PE supplementation, may indicate that this PE product cannot increase growth performance for piglets with a RE feeding regimen in the short post-weaning period. Similar results have been found by Daza et al (2003), who reported that pigs fed a RE diet reduced their feed intake but had a feed conversion ratio similar to that of pigs fed AD. Rantzer et al (1996) reported that, during the period of feeding restriction, the RE piglets had a lower diarrhoea score than those fed AD.…”

Section: Discussionsupporting

confidence: 89%

Administration of a novel plant extract product via drinking water to post-weaning piglets: effects on performance and gut health

Bontempo

Jiang

Cheli

et al. 2014

Animal

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The present study evaluated the effects of a novel plant extract (PE) product (Grazix TM ) on the performance and gut health of weaned piglets challenged with Escherichia coli. The PE was a standardised mixture of green tea leaves (Camellia sinensis) and pomegranate fruit (Punica granatum) obtained by using the LiveXtract TM process. A total of 144 piglets were weaned at 24 days and allocated to 8 for a 35-day experiment with a 2 × 2 × 2 factorial design comparing different treatments (water without product (CT) or 8 μl/kg per day PE in drinking water (PE)), feeding regimens (ad libitum (AD) or restricted (RE)) and oral E. coli challenges on day 9 (sham (− ) or infected ( + )). There were six pens per group with three piglets per pen. On day 35, 24 of the RE feeding piglets were slaughtered. It was found that PE supplementation increased the average daily gain (ADG) from day 28 to day 35 ( P = 0.03) and increased the gain to feed ratio (G : F) from day 7 to day 14 ( P = 0.02). RE feeding led to lower feed intake in piglets during the 1 st week ( P < 0.01), 2 nd week ( P = 0.06), 3 rd week ( P = 0.05), and throughout the course of the overall study period ( P = 0.05). E. coli challenge decreased the ADG and G : F ratio from day 7 to day 14 ( P = 0.08 and < 0.01, respectively) and increased the faecal score (higher values indicate more severe diarrhoea) on days 14, 21, 28 and 35 ( P < 0.01). PE supplementation decreased the faecal score in the challenged piglets during the 1 st week post-challenge ( P < 0.01). E. coli challenge increased the faecal E. coli level on day 14 ( P = 0.03) and increased the Enterobacteriaceae level on day 35 ( P < 0.01). Reduced faecal E. coli was observed on days 14 and 35 ( P = 0.05 and 0.02, respectively), and reduced Enterobacteriaceae ( P < 0.01) was found on day 35 in the PE animals. RE feeding increased the faecal Lactobacillus, Enterobacteriaceae and E. coli levels on day 35 ( P = 0.02, < 0.01 and < 0.01, respectively). These results suggest that PE supplementation may improve the gut health status of post-weaning piglets and counteract some of the negative effects that occur when piglets are challenged with E. coli.Keywords: Escherichia coli, gut health, performance, piglet, plant extract ImplicationsThis study investigated the effects of a novel plant extract product that was added to the drinking water for weaned piglets. Different feeding regimens were tested, and the effects of the extract on growth performance, gut health and protection against Escherichia coli challenge were observed. The results showed that the plant extract may represent a useful additive for improving gut health and microbial ecology and reducing the severity of an E. coli challenge. The results may have a significant impact on nutritional management in conventional farms. Use of the plant extract could enable piglets to better withstand the infections that are often associated with weaning.

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Section: Discussionsupporting

confidence: 89%

Administration of a novel plant extract product via drinking water to post-weaning piglets: effects on performance and gut health

Bontempo

Jiang

Cheli

et al. 2014

Animal

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“…As características nutricionais estabelecidas no trabalho e o padrão genético dos animais avaliados podem ter sido responsáveis por esse resultado, que não correspondeu à melhora da conversão. Esse resultado contraria os dados obtidos por Daza et al (2003), que verificaram os efeitos da restrição de 25% em relação ao consumo à vontade durante 35 dias, com início aos 32,8 kg PC, e notaram melhora de 9% na conversão alimentar aos 35 dias após a restrição.…”

Section: Resultsunclassified

Desempenho e características de carcaça de suínos submetidos a diferentes programas de restrição alimentar na fase dos 30 aos 118 kg

et al. 2008

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RESUMO -Objetivou-se avaliar o desempenho, as características de carcaça e o peso de órgãos do sistema digestório de suínos submetidos a restrição alimentar. Foram utilizados 40 suínos machos castrados, Landrace × Large White, distribuídos em delineamento de blocos casualisados, com quatro tratamentos, cinco repetições e dois animais por parcela experimental. Como tratamentos, avaliaram-se quatro programas de restrição alimentar: um controle, com alimentação à vontade durante os 86 dias de experimento; e outros três, com restrição de 20% no consumo de ração em relação ao grupo controle, durante 21 dias, a partir dos 30, 50 ou 70 kg de peso corporal (PC). Foram mensurados o consumo diário de ração, o ganho diário de peso e a conversão alimentar. As características de carcaça analisadas foram: peso de carcaça quente e fria, comprimento e rendimento de carcaça, espessura de toucinho, profundidade do músculo Longissimus dorsi, rendimento de carne na carcaça, quantidade de carne na carcaça, área de olho-de-lombo e pesos de fígado, estômago e intestinos delgado e grosso. Os custos de cada programa de alimentação foram avaliados para determinação de sua viabilidade. A conversão alimentar, considerando o período total do experimento, foi melhor nos animais mantidos sob restrição a partir dos 70 kg. Os resultados das avaliações de carcaça e dos pesos dos órgãos não diferiram entre os programas de restrição. As análises de custo apontaram melhor relação para a restrição a partir dos 70 kg PC. Em todos os programas de alimentação, a restrição alimentar seguida de alimentação à vontade promoveu ganho compensatório.Palavras-chave: consumo de ração, desempenho, eficiência alimentar, ganho de peso Performance and carcass traits of pigs submitted to different programs of feed restriction from 30 to 118 kg ABSTRACT -The aim of this work was evaluate the animal performance, the carcass characteristics and the weight of the organs of digestive system of pigs submitted to different periods of feed restriction. A total of 40 barrows, Landrace × Large White were distributed to randomized block design, to four feed restriction programs, five replications and two animal per experimental unit. Four restrict programs were evaluated: one control, with ad libitum feeding during the 86 days of experiment, and others three, with restriction of 20% in the feed intake in relation to control group, during 21 days, at 30, 50 or 70 kg BW. Performance characteristics as daily feed intake, daily weight gain and the feed conversion of the animals were evaluated. Carcass characteristics, as hot and cold carcass weights, length and carcass dressing, subcutaneous fat thickness, Longissimus dorsi muscle depth, lean meat yield, lean meat amount and loin eye area were evaluated. Also were evaluated organs weights, as liver, stomach, small and large intestine. The costs of each program were evaluated to observe their viability. Feed conversion, considering total experimental period, was better for the animals kept on feed restriction from 70 kg BW. The car...

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“…In some experiments compensatory growth produced pigs with leaner carcass (Campbell et al, 1983;Donker et al, 1986). However, other studies observed no difference in carcass traits at slaughter between restricted pigs and pigs with ad libitum access to feed during growth period (Prince et al, 1983;Valaja et al, 1992;Critser et al, 1995;Daza et al, 2003). On other hand, the possible influence of compensatory growth on backfat fatty acid composition of selected pigs has been hardly studied, although fatty acid metabolism is largely affected by feed intake and metabolic regulation.…”

Section: Introductionmentioning

confidence: 94%

“…Thus, Wiesemüller et al (1978) observed an improvement of overall average daily gain as well as feed conversion ratio while Campbell et al (1983), Prince et al (1983) and Donker et al (1986) found an improvement only in overall feed conversion ratio and not in average daily gain when feeding level was restricted during grower phase. Critser et al (1995) and Daza et al (2003) found no improvement either in overall daily gain or in feed efficiency, despite the compensatory growth during the finishing period.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of a moderate feed restriction on subsequent growth and body composition in pigs raised under high environmental temperatures

Daza¹,

Olivares²,

López‐Bote³

2006

J. Anim. Feed Sci.

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The experiment was conducted to assess the influence of a moderate feed restriction during the growth period on overall performance, corporal traits and fatty acid composition in pig backfat in pigs raised under high environmetal temperatures. A hundred Large White x (Large White x Landrace) barrows with an average initial weight of 34.5 kg were randomly distributed, in pens (10 pigs per pen). Fifty pigs were fed ad libitum for 36 days (AL pigs) and another fifty were restricted by 25% of their ad libitum consumption during the same period (R pigs). During the subsequent re-feeding period (64 days) all pigs were fed ad libitum. The only diet used contained 13.4 MJ ME kg -1 , 17% crude protein and 1.3% lysine. The minimum, maximum and mean average temperatures recorded during the feed restriction and post-restriction periods were, ºC: 21.5 ± 1.2, 28.6 ± 1.3 and 25.0 ± 1.1, and 22.6 ± 0.9, 31.2 ± 1.0 and 26.9 ± 0.9, respectively. Considering the whole study period, the average daily gain and average daily feed intake were higher (P<0.05) for AL pigs than for R pigs (840 vs 808 g and 2478 vs 2383 g), although the feed conversion ratio was not different (P>0.05) (2.95 vs 2.95 kg . kg -1 ). At the end of experiment, no differences for dorsal fat thickness and area and for longissimus dorsi muscle depth, width and area, measured at site of the last rib by means of a real-time ultrasound device, were found between experimental groups. The linolenic acid proportions of the subcutaneous fat outer and inner layer were higher in AL than in R pigs (P<0.05), while palmitic and saturated fatty acids total proportions of the subcutaneous fat inner layer were higher in R than in AL pigs (P<0.05).

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Effect on pig performance of feed restriction during the growth period

Cited by 17 publications

References 10 publications

Administration of a novel plant extract product via drinking water to post-weaning piglets: effects on performance and gut health

Administration of a novel plant extract product via drinking water to post-weaning piglets: effects on performance and gut health

Desempenho e características de carcaça de suínos submetidos a diferentes programas de restrição alimentar na fase dos 30 aos 118 kg

Effect of a moderate feed restriction on subsequent growth and body composition in pigs raised under high environmental temperatures

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