Djane Dallanora

Desempenho produtivo de leitoas alimentadas com dietas de gestação de baixo ou alto nível de casca de soja

-1 ) da racao T1 (n=108) ou 2,7kg (7249Kcal EM dia -1 ) da racao T2 (n=99). Aos 90 dias de gestacao, as femeas T1 e T2 receberam respectivamente 3,0kg (9117Kcal EM dia -1 ) e 3,4kg (9129Kcal EM dia ABSTRACT Gilts were fed gestation diets, with inclusion of 7% (T1) and 35% (T2) of soybean hulls which had fiber levels of 4.5 and 13.1%, respectively. After insemination, all females received 1.8kg of T1 diet (5470Kcal ME day -1 ) up to 35 days of gestation, when they were allocated to receive 2.4kg (7294Kcal ME day-1) of T1 (n= 108) or 2.7kg (7249Kcal ME day -1 ) of T2 (n= 99) diet. At 90 days of gestation T1 and T2 females started to receive 3.0kg (9117Kcal ME day-1) and 3.4kg (9129Kcal ME day -1 ) of T1 and T2 diets, respectively. The T1 females were heavier than T2 females, at 110 days of gestation and at parturition (P 0.05). Treatments were similar for total and born alive litter size, stillborn and mummified (P>0.05). The average birth weight was higher for T1 piglets (P=0.03), but litter weight was similar for treatments (P>0.05). Weaned litter size and weight did not differ for treatments (P>0.05). The two levels of soybean hulls in the gestation diets of gilts resulted in similar performance.

Comportamento de leitoas gestantes submetidas a dietas com baixo ou alto nível de fibra e mantidas em gaiolas ou em baias

The effect of low (LF= 4.5%) or high (HF= 13%) dietary crude fibre content and of housing system (individual crates or collective stalls) on the behaviour of pregnant gilts was evaluated. The posture and stereotypies of the females were observed in three moments: 10 and 30 minutes after morning intake (10AP and 30AP) and 10 minutes before afternoon meal (10AN). The position and stereotypies of the group-stall were not associated with the diet (P>0.05). In the crate-group, the HF diet was associated to a lower frequency of standing position and a higher frequency of lying position (P 0.05). In the crate-group the HF diet was associated to a reduction of stereotypies at 10AP and 30AP. Stall-housing was associated to a greater absence of stereotypies (P 0.05). The HF diet, when administered to crate-group, reduced standing position at 10AP and increased the absence of stereotypies at 10AP and 30AP, suggesting an improvement of gilts welfare. However, anxiety of crate-housed gilts expressed by a higher frequency of standing position at 30AN, was not reduced with the HF diet.