Effects of Dietary Supplementation of Soy Isoflavones on the Performance and Egg Quality in Native Chinese Breeder Hens

To investigate the effects of soy isoflavones (ISF) on the laying performance of Xueshan breeder hens at different phases of the egg production cycle, 32 weeks (wks) old local Chinese breeder hens were assigned to two groups with three replicates (750 hens/replicate) for control and treatment groups. Then every group was divided into three sub-groups following 4, 12, and 20 wks administration of control or ISF diet. General Linear Model procedure was used (2× 3), and treatments were considered of two factors (diets and time) with different levels (control and ISF diets; 4, 12, and 20 wks of diet supply time). Basal diet with 3 mg/kg ISF was used. Performance, egg quality, organs relative weight and cholesterol level were measured at three time-points of 36, 44, and 52-wks of age old. The results showed that both diets and time significantly affected the production performance and physiological parameters. In details, ISF inclusion significantly (p=0.02) decreased average egg weight and average feed intake compared to control at 52-wks of age old, however, feed conversation ratio was not affected by ISF diet. Moreover, ISF diet caused to an increase hatching rate (p=0.01) at 36-wks old hens, an abnormal egg rate decrease (p=0.02) at 44-wks old, an increase in yolk color (p=0.035) and Haugh unit (p=0.039), and a decrease in low-density lipoprotein cholesterol level (p=0.03) at 52-wks of age old. ISF diet also increased spleen relative weight (p=0.041) and total antioxidant capacity compared to the control group. The results revealed that ISF inclusion exerted some benefits, thus it could be a potential feed additive for the breeder hens.(AU)

Effects of Dietary Supplementation of Soy Isoflavones on the Performance and Egg Quality in Native Chinese Breeder Hens

To investigate the effects of soy isoflavones (ISF) on the laying performance of Xueshan breeder hens at different phases of the egg production cycle, 32 weeks (wks) old local Chinese breeder hens were assigned to two groups with three replicates (750 hens/replicate) for control and treatment groups. Then every group was divided into three sub-groups following 4, 12, and 20 wks administration of control or ISF diet. General Linear Model procedure was used (2× 3), and treatments were considered of two factors (diets and time) with different levels (control and ISF diets; 4, 12, and 20 wks of diet supply time). Basal diet with 3 mg/kg ISF was used. Performance, egg quality, organs relative weight and cholesterol level were measured at three time-points of 36, 44, and 52-wks of age old. The results showed that both diets and time significantly affected the production performance and physiological parameters. In details, ISF inclusion significantly (p=0.02) decreased average egg weight and average feed intake compared to control at 52-wks of age old, however, feed conversation ratio was not affected by ISF diet. Moreover, ISF diet caused to an increase hatching rate (p=0.01) at 36-wks old hens, an abnormal egg rate decrease (p=0.02) at 44-wks old, an increase in yolk color (p=0.035) and Haugh unit (p=0.039), and a decrease in low-density lipoprotein cholesterol level (p=0.03) at 52-wks of age old. ISF diet also increased spleen relative weight (p=0.041) and total antioxidant capacity compared to the control group. The results revealed that ISF inclusion exerted some benefits, thus it could be a potential feed additive for the breeder hens.

Utilization of jellied corn flour and micronized soybean in diets of piglets from 21 to 56 days old / Utilização da farinha pré-gelatinizada de milho e soja micronizada em dietas de leitões dos 21 aos 56 dias de idade

The present study was conducted in order to evaluate the use of jellied corn flour and micronized soybean, in substitution of corn and soybean meal, , respectively, in diets for weaning piglets from 21 to 56 days of age. The performance, relative weight of the digestive organs and duodenum and jejunum villous height and crypt depth were evaluated. A total of 112 21 days old weaning piglets were utilized, being 56 castrated males and 56 females, with average initial weight of 8,0 kg. The experimental design was a randomized block design, with factorial arrangement of treatments (two types of corn and types of soybean), seven replicates and four piglets per experimental unit. The two soy types affected (P 0,05) the relative weight of liver and large intestine at 33 days of age. The largest weight of liver and large intestine was observed when soybean meal was used and the smallest when the micronized soybean was utilized. The relative weight of the stomach was affected (P 0,05) by the two corn and soy types. It was observed highest villous height when used micronized soybean and lowest crypt depth was observed when used common corn + micronized soybean. The same way, the use of pre-jellied corn flour and micronized soybean in the diets did not affect the performance.The combinations of common corn and pre-jellied corn flour with micronized soybean resulted in reduced re

O objetivo do trabalho foi avaliar o efeito da farinha pré-gelatinizada de milho e da soja micronizada em substituição total ao milho comum e ao farelo de soja, respectivamente, sobre o desempenho, peso relativo dos órgãos digestivos e parâmetros morfológicos intestinais (altura de vilosidade e profundidade de cripta), de leitões dos 21 aos 56 dias de idade. Foram utilizados 112 leitões mestiços (Landrace e Large White), desmamados aos 21 dias de idade, sendo 56 machos castrados e 56 fêmeas, com peso inicial médio de 8,0 kg, em um delineamento em blocos casualizados, em esquema fatorial 2 x 2 (dois tipos de milho e dois tipos de soja), sete repetições e quatro leitões por unidade experimental. Não houve efeito da interação dos tipos de milho com os tipos de soja sobre o ganho de peso, consumo de ração e conversão alimentar. A utilização da soja micronizada resultou em redução dos pesos relativos do fígado e intestino grosso, aos 33 dias de idade. O peso relativo do estômago foi influenciado pelos dois tipos de milho e de soja, sendo que os maiores valores foram obtidos com a dieta à base de milho e farelo de soja. A altura das vilosidades do duodeno e do jejuno, aos 33 dias de idade, foi influenciada pelos tipos de milho e de soja, sendo a profundidade de cripta no duodeno influenciada pela interação entre ambos. A altura das vilosidades foi maior quando se utilizou a farinha p

Utilization of jellied corn flour and micronized soybean in diets of piglets from 21 to 56 days old / Utilização da farinha pré-gelatinizada de milho e soja micronizada em dietas de leitões dos 21 aos 56 dias de idade

The present study was conducted in order to evaluate the use of jellied corn flour and micronized soybean, in substitution of corn and soybean meal, , respectively, in diets for weaning piglets from 21 to 56 days of age. The performance, relative weight of the digestive organs and duodenum and jejunum villous height and crypt depth were evaluated. A total of 112 21 days old weaning piglets were utilized, being 56 castrated males and 56 females, with average initial weight of 8,0 kg. The experimental design was a randomized block design, with factorial arrangement of treatments (two types of corn and types of soybean), seven replicates and four piglets per experimental unit. The two soy types affected (P 0,05) the relative weight of liver and large intestine at 33 days of age. The largest weight of liver and large intestine was observed when soybean meal was used and the smallest when the micronized soybean was utilized. The relative weight of the stomach was affected (P 0,05) by the two corn and soy types. It was observed highest villous height when used micronized soybean and lowest crypt depth was observed when used common corn + micronized soybean. The same way, the use of pre-jellied corn flour and micronized soybean in the diets did not affect the performance.The combinations of common corn and pre-jellied corn flour with micronized soybean resulted in reduced re

O objetivo do trabalho foi avaliar o efeito da farinha pré-gelatinizada de milho e da soja micronizada em substituição total ao milho comum e ao farelo de soja, respectivamente, sobre o desempenho, peso relativo dos órgãos digestivos e parâmetros morfológicos intestinais (altura de vilosidade e profundidade de cripta), de leitões dos 21 aos 56 dias de idade. Foram utilizados 112 leitões mestiços (Landrace e Large White), desmamados aos 21 dias de idade, sendo 56 machos castrados e 56 fêmeas, com peso inicial médio de 8,0 kg, em um delineamento em blocos casualizados, em esquema fatorial 2 x 2 (dois tipos de milho e dois tipos de soja), sete repetições e quatro leitões por unidade experimental. Não houve efeito da interação dos tipos de milho com os tipos de soja sobre o ganho de peso, consumo de ração e conversão alimentar. A utilização da soja micronizada resultou em redução dos pesos relativos do fígado e intestino grosso, aos 33 dias de idade. O peso relativo do estômago foi influenciado pelos dois tipos de milho e de soja, sendo que os maiores valores foram obtidos com a dieta à base de milho e farelo de soja. A altura das vilosidades do duodeno e do jejuno, aos 33 dias de idade, foi influenciada pelos tipos de milho e de soja, sendo a profundidade de cripta no duodeno influenciada pela interação entre ambos. A altura das vilosidades foi maior quando se utilizou a farinha p