Determination and prediction of the @entity535 digestibility of sunflower seed meals in growing XXXX .

@entity1707 @entity6213 @entity1568 @entity4628 @entity535 @entity2537 @entity1853 @entity376 @entity1889 @entity62
This experiment was conducted to evaluate the chemical composition and @entity535 (AA) digestibility of sunflower seed meal (SFSM) and to use this data to develop prediction equations for estimating AA digestibility for growing @entity1707 . Ten SFSM were collected from five provinces in China. Twelve barrows (38.8  4.6 kg), fitted with ileal T-cannula were allotted into two 6*6 Latin square designs. Each of six experimental periods comprised a 5-d adaption period followed by a 2-d collection of ileal digesta. The ten test diets contained 50% SFSM as the sole source of AA. Another @entity1568 -free diet was used to measure the basal endogenous losses of crude protein (CP) and AA. @entity6213 (0.3%) was used as an inert marker in each diet. There was considerable variation (CV>10%) among the ten SFSM in chemical composition ( @entity62 [ @entity62 ]). The concentration of CP and ether extract (EE) ranged from 29.33% to 39.09% and 0.88% to 11.33%, respectively. @entity2537 ( @entity2537 ), neutral detergent fibre and acid detergent fibre ranged from 21.46% to 36.42%, 38.15% to 55.40%, and 24.59% to 37.34%, respectively. There was variation among the ten SFSM in @entity4628 ( @entity4628 ) and @entity4628 ( @entity4628 ) for @entity376 and @entity1889 , which ranged from 63.16 to 79.21 and 55.19% to 72.04% for @entity4628 and 67.03% to 82.07% and 61.97% to 77.01% for @entity4628 , respectively. The variation in CP and @entity1853 ranged from 60.13% to 74.72% and 74.79% to 88.60% for @entity4628 and 66.70% to 79.31% and 77.16% to 90.27% for @entity4628 , respectively. @entity1853 was a good indicator to predict AA digestibility. These results indicate that conventional chemical composition of SFSM was variable (CV>10%) among the ten SFSM ( @entity62 ). The results of @entity4628 , @entity4628 and prediction equations could be used to evaluate the digestibility of SFSM in growing @entity1707 .
