Value of raw soybeans and soybean oil supplementation in sow gestation and lactation diets: a cooperative study.

Abstract

A cooperative study using 215 sows during two parities (349 litters) was conducted at six stations to determine the effect of raw soybeans in gestation and lactation diets on sow and litter performance. Sows were bred and allotted to fortified corn diets containing either soybean meal (control) or raw soybeans. A corn-soybean meal-soybean oil diet, isocaloric to the raw soybean diet, was included as a third treatment at three stations. All diets contained 14% CP. These diets were fed during both gestation and lactation through two parities. The daily gestation feed intake ranged from 1.8 to 2.3 kg/sow, depending on station. During lactation, the sows were allowed ad libitum access to their respective diets. Gestational weight gain was not influenced by diet, but sows fed raw soybeans consumed less (P less than .01) feed during lactation and had greater (P less than .01) lactational weight loss and their pigs were lighter in weight (P less than .05) both at 21 d and at weaning (varied between 3 and 5 wk of age). Sows fed the diet with supplemental oil had reproductive and lactational performance similar to those fed the control diet. Milk obtained at d 10 to 14 of lactation from sows fed raw soybeans had lower (P less than .05) protein content than milk from sows fed the other two diets, but fat content of the milk tended to be increased by raw soybeans or by added soybean oil. Return to estrus was not affected by diet.(ABSTRACT TRUNCATED AT 250 WORDS)

Effects of dietary energy intake during gestation and lactation on milk yield and composition of first, second and fourth parity sows

“…However, the addition of 10% fat to the diet of lactating sows (corresponding to an increase of about 20% energy intake) increased the milk fat content by 15 -28% and the milk yield by 13 -15% (Johnston et al 1986;Shurson et al 1986;Schoenherr et al 1989;Jackson et al 1995;Averette et al 1999). Diets containing raw soybeans and soybean oil compared to soybean meal increased the milk fat content by 7% und 10%, respectively (Yen et al 1991).…”

Efeito da adição do óleo de soja, óleo de linhaça, óleo de coco babaçu e sebo bovino nos parâmetros produtivos e reprodutivos de fêmeas suínas em lactação

“…As fêmeas suínas tendem a aumentar o peso corpóreo em relação ao número de parições, havendo uma elevação da primeira para a segunda (EVERTS; DEKKER, 1994;YEN et al, 1991), assim como da segunda para a terceira (EVERTS; DEKKER, 1994), porém quanto às mudanças corporais, em relação à parição Everts e Dekker (1994), Haydon et al (1990) e Coffey et al (1994 não encontraram diferenças.…”

“…Haydon et al (1990) não encontraram diferenças significativas para a alimentação utilizada, amendoins tostados ou crus. Já Yen et al (1991) apresentaram menores perdas para as fêmeas alimentadas com farelo de soja, em comparação com soja crua.…”

“…Porém quando comparamos as fêmeas de segundo parto, com fêmeas de terceiro ou mais partos, estas possuem IDE mais longo . Porém Yen et al (1991) não apresentaram diferença significativa com fêmeas de primeira e segunda parição. Jones e Stahly (1999), avaliando o efeito da baixa e alta ingestão de proteína, encontraram intervalos maiores para fêmeas que receberam dietas com baixa proteína, e afirmaram que uma ingestão inadequada de proteína resulta em uma redução na secreção do hormônio luteinizante (LH), o que trás como conseqüência um aumento no intervalo desmama cio.…”

“…al., 1992;LI e HACKER, 1995;SCHOENHERR et. al., 1989;YEN, et. al., 1991) Os estudos desenvolvidos por Cromwell et.…”