Níveis de lisina digestível em dietas para fêmeas suínas primíparas em lactação

Oelke, Carlos Alexandre; Dahlke, Fabiano; Beltrani, Olair Carlos; Pozza, Paulo César; Pazuch, Daiana; Meurer, Régis Fernando Pastorelo

doi:10.4025/actascianimsci.v30i3.1626

Cited by 10 publications

(9 citation statements)

References 2 publications

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“…Adequate nutrient supply for lactating sows may positively influence their body condition, maximizing their productivity in terms of milk production and piglet growth (Oelke et al, 2008), and minimizing reproductive problems after weaning (Dourmad et al, 2008). The first objective of this study was to evaluate the impact of feed restriction during the lactation of hyper-prolific sows on their productive and reproductive performance.…”

Section: Introductionmentioning

confidence: 99%

Impact of feed restriction on the performance of highly prolific lactating sows and its effect on the subsequent lactation

Bettio

Maiorka

Barrilli

et al. 2016

Animal

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A total of 50 mixed parity sows of a high-prolificacy genetic line were used to evaluate the impact of feed restriction during lactation on their production and reproductive performance and their performance in the subsequent lactation. From day 7 of lactation, sows were distributed according to a completely randomized experimental design into two treatments. In treatment 1, sows were fed 8.0 kg feed/day (control) and in treatment 2, sows were fed 4.0 kg/day. The same suckling pressure was maintained until weaning on day 28 of lactation. Average minimum and maximum temperatures measured during the experimental period were 32.1°C and 16.5°C, respectively. Control sows presented significantly higher feed intake (P<0.001) compared with the restricted sows (6.43 v. 4.14 kg/day, respectively). Treatments influenced BW and backfat thickness losses (P<0.001). Control sows lost less BW than the restricted-fed sows (7.8 v. 28.2 kg). Restricted-fed sows lost more backfat thickness than those in the control group (3.97 v. 2.07 mm; P<0.01). Restricted-fed sows tended (P<0.10) to be lighter at weaning compared with the control sows (211 v. 227 kg). The composition of BW loss was influenced by the treatments (P<0.001), as the restricted-fed sows lost more body protein, lipids and energy compared with the control sows (3.90 v. 0.98 kg, 11.78 v. 4.83 kg and 584 v. 224 MJ, respectively). Litter weight gain was greater (P<0.05) in control sows than in restricted-fed sows (2.70 v. 2.43 kg/day). Daily milk production was 19% higher (P<0.01) in the control sows compared with the restricted-fed sows (8.33 v. 6.99 kg/day). However, restricted-fed sows presented a higher (P<0.05) lactation efficiency than the sows of the control group (82.30% v. 72.93%). No differences were detected (P>0.10) in weaning-to-estrus interval and averaged 4.3 days. No effect of the treatment (P>0.10) was observed on any of the studied performance traits in the subsequent lactation, except for litter size at birth that tended (15.2 v. 14.1; P<0.10) to be lower for the restricted sows. In conclusion, the present study demonstrated that feed restriction during lactation leads to intense catabolism of the body tissues of sows, negatively affecting their milk production, and the litter weight gain and possibly number of piglets born in the next litter. On the other hand, restricted-fed sows are more efficient, producing more milk per amount of feed intake.

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Section: Introductionmentioning

confidence: 99%

Impact of feed restriction on the performance of highly prolific lactating sows and its effect on the subsequent lactation

Bettio

Maiorka

Barrilli

et al. 2016

Animal

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“…Como consequência, essas matrizes têm forte tendência de redução no escore corporal, o que resulta em falhas reprodutivas e redução da produtividade durante sua vida útil. Essa situação é mais evidenciada em matrizes de primeiro parto, pois além de possuírem menores reservas corporais e reduzida capacidade de consumo (OELKE et al, 2008), ainda possuem necessidades nutricionais significativas para o crescimento, o que pode resultar em falhas reprodutivas e ocasionar a chamada síndrome do segundo parto.…”

Section: Introductionunclassified

Betaine in the diet of sows in the first or second reproductive cycle

Andrade

Watanabe

Araújo

et al. 2016

Revista Ciência Agronômica

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“…Sob estresse térmico, os níveis de creatinina e colesterol plasmáticos são aumentados quando comparados a animais mantidos sobre conforto térmico (FREITAG et al, 2014). A creatinina em grande parte é proveniente do aumento do turnover no músculo (FULLER, 2004), e seus níveis circulantes podem ser bons indicadores do aumento do catabolismo muscular (VAZ et al, 2005a) já que, em momentos de aumento na taxa de catabolismo muscular, pode ser notada a elevação dos níveis séricos de creatinina (OELKE et al, 2008).…”

Section: Referencial Teóricounclassified