Fatores que afetam as características produtivas e reprodutivas de fêmeas suínas

Rosa, Lorena Silva da; Filho, Luiz Carlos César da Costa; Souza, María Inés Lênz; Filho, Ruy Alberto Caetano Corrêa

doi:10.17523/bia.v71n4p381

Cited by 4 publications

(10 citation statements)

References 34 publications

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“…Características reprodutivas de fêmeas suínas, principalmente o número de leitões nascidos vivos, taxa de natimortalidade e desmamados/parto são muito influenciadas pelo manejo pré e pós-parto e genética da fêmea (Rosa et al, 2014), sendo as fases mais críticas da produção de suínos o parto e a lactação, as quais requerem requer manejos específicos como acompanhamento dos partos e do desenvolvimento dos leitões.…”

Section: Resultsunclassified

Desempenho reprodutivo de fêmeas suínas da raça Moura acasaladas com machos de diferentes origens genéticas

Farias

Filardi

Cervati

et al. 2020

RSD

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A produção de suínos em menor escala, como a familiar, normalmente utiliza animais de raças naturalizadas, que apesar do menor desempenho produtivo, são mais rústicas, se adaptam a diversos sistemas de produção e apresentarem característica na carne desejável para produção de produtos destinados a nichos de mercado. O objetivo do presente estudo foi avaliar se o desempenho reprodutivo de fêmeas suínas da raça Moura é influenciado pela genética do macho utilizado nos acasalamentos. Os dados utilizados foram extraídos das fichas de controle zootécnico do setor de suinocultura da Fazenda de Ensino, Pesquisa e Extensão da Unesp - Campus de Ilha Solteira – SP, entre setembro de 2016 a setembro de 2018. Para a avaliação foram validados dados de 34 partos de acasalamento de fêmeas Moura com machos Moura (12 partos), machos ½ Moura (12 partos) e machos sintéticos MS115 (10 partos). Em cada parto foram considerados os números de leitões nascidos e de leitões nascidos vivos, taxa de natimortos, peso ao nascimento e ao desmame e taxa de mortalidade e ganho diário de peso do nascimento ao desmame. A genética do macho não interferiu (P > 0,05) em nenhum parâmetro avaliado. Portanto, a utilização de fêmeas da raça Moura acasaladas com machos também Moura, machos sintéticos MS115 ou machos ½ Moura não determinou diferenças no tamanho, sobrevivência e desempenho da leitegada até o desmame. Em média o número de nascidos vivos, taxa de mortalidade do nascimento ao desmame e ganho de peso diário foram respectivamente, 8,82; 12,12% e 0,210 g/dia.

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Section: Resultsunclassified

Desempenho reprodutivo de fêmeas suínas da raça Moura acasaladas com machos de diferentes origens genéticas

Farias

Filardi

Cervati

et al. 2020

RSD

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“…i Bios HD (Vaccinar, Belo Horizonte, Brazil): DL-methionine, salmon meal, poultry meal, L-, L-threonine, yeast, blood plasma, calcium propionate, ethoxyquim. 2 Quali-leite (Vaccinar, orizonte, Brazil): sugar, silicon dioxide, dicalcium phosphate, lactose, micronized full fat 3 Quali Start 400 (Vaccinar, Belo Horizonte, Brazil Brazil) composition per kg of diet: vitamin 000 IU/kg), vitamin D (2000 IU/kg), vitamin E (50 IU/kg), vitamin K3 (2.0 mg/kg), vitamin B1 g/kg), vitamin B2 (5.0 mg/kg), vitamin B6 (2.0 mg/kg), vitamin B12 (0.02 mg/kg), niacin (30.0 ), pantothenic acid (15.0 mg/kg), folic acid (1.0 mg/kg), biotin (0.4 mg/kg), calcium (6.8 g/kg), horus (4.4 g/kg), manganese (40 mg/kg), zinc (3200 mg/kg), iron (150 mg/kg), copper (200 ), iodine (1 mg/kg), selenium (0.4 mg/kg), choline (1000 mg/kg), colistin (40.0 mg/kg), lactose g), methionine (3.35 g/kg), lysine (7.86 g/kg), threonine (4.96 g/kg), tryptophan (1.3 g/kg). t 21 days postpartum, sows were weighed, backfat thickness was measured (Leaner, Renco Corporation, Golden Valley, MN, USA) and litters were weighed after ing.…”

Section: Discussionmentioning

confidence: 99%

“…In recent decades, the average size of sow litters has significantly increased due to genetic improvement, advances related to nutrition and advances applied to the management of animals in pig farms [1]. However, the rapid fetal development during pregnancy and the increased demand for milk during lactation result in fluctuations in the body condition of sows between reproductive cycles [2]. One of the main implications of the catabolic state during pregnancy and lactation in sows is the increase in oxidative stress [3,4], resulting from the high production of reactive oxygen species [5].…”

Section: Introductionmentioning

confidence: 99%

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Beta-Carotene Supplementation for Sows: Reproductive Parameters and Productive Performance of Piglets

Oliveira,

Freitas,

Nogueira

et al. 2023

Animals

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The rapid fetal development and the increased demand for milk result in a catabolic state and oxidative stress in hyperprolific sows. Despite animal defense mechanisms, the dietary supplementation of antioxidants is being evaluated to reduce the impacts of excess free radicals. The aim of this study was to evaluate the short- and long-term effects of beta-carotene supplementation for sows on the reproductive response and performance of suckling piglets. A total of 120 sows were distributed in a 3 × 4 factorial arrangement of three supplementation levels (B0–no supplementation, B200–200 mg beta-carotene/day and B400–400 mg beta-carotene/day) and four groups of parity order (1st, 2nd, 3rd, above 4th). Beta-carotene supplementation during lactation resulted in a higher litter weight at weaning. A higher average weight of piglets and litter weight at birth were observed, as well as a greater number of piglets weaned and litter weight at weaning in sows supplemented with 400 mg of beta-carotene during gestation and lactation periods. Supplementation with 200 and 400 mg of beta-carotene resulted in a greater weight at weaning and daily weight gain in piglets. Daily supplementation with 400 mg of beta-carotene in the prepartum and lactation phases provides a greater litter weight at weaning and, when supplemented in the pre-gestation and gestation periods, results in a greater litter weight at birth and at weaning.

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Addition of calcitic seaweed in the diet of sows positively affects the number of live-born piglets and milk parameters

Oliveira¹,

Barbosa²,

Rupolo³

et al. 2022

Revista Brasileira De Zootecnia

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Non-ruminantsFull-length research article Addition of calcitic seaweed in the diet of sows positively affects the number of live-born piglets and milk parameters ABSTRACT -This study was conducted to assess the effects of maternal dietary calcitic seaweed (CSW) on performance and blood metabolites of sows, and on performance, blood metabolites, intestinal microbiota, and parameters of gastrointestinal tract and bone of litters. On d 21 (post-insemination), non-pregnant sows were removed from the trial, remaining 19 sows in control group (without CSW) and 16 sows receiving CSW. Then, a total of 35 sows were allocated in a randomized block design with two treatments: control diet with calcitic limestone plus dicalcium phosphate (CTL) or CTL plus 0.4% CSW. In gestation, sows were fed twice a day (07:00 and 15:00 h) to reach an intake of 2.5 kg animal −1 day −1 divided into two equal meals. On parturition day, sows were offered only 0.5 kg feed animal −1 . Throughout lactation, sows were fed three times a day (≅7 kg animal −1 day −1 ). All diets were provided as mash. Results suggested that sows fed CTL had litters with lower body weight at birth compared with those fed CSW. Sows fed CSW had 14.28% more live-born piglets and lower stillborns. Piglets from sows fed CSW showed greater calcium concentration on d 14 after birth than those from sows fed CTL. Sows fed CSW showed better milk chemical composition and an increase of 27.16% in milk production compared with those fed CTL. Piglets from sows fed CSW had an increase in cecum content in the Enterobacteriaceae count. This study showed that adding 0.4% CSW in the diet of pregnant and lactating sows as an organic calcium source positively influences the number of live-born piglets and the percentage of stillborns. In addition, milk composition and production are also improved without affecting piglets' biological response.

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Fatores que afetam as características produtivas e reprodutivas de fêmeas suínas

Cited by 4 publications

References 34 publications

Desempenho reprodutivo de fêmeas suínas da raça Moura acasaladas com machos de diferentes origens genéticas

Desempenho reprodutivo de fêmeas suínas da raça Moura acasaladas com machos de diferentes origens genéticas

Beta-Carotene Supplementation for Sows: Reproductive Parameters and Productive Performance of Piglets

Addition of calcitic seaweed in the diet of sows positively affects the number of live-born piglets and milk parameters

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