Digestible phosphorus levels for barrows from 50 to 80 kg
نویسندگان
چکیده
منابع مشابه
True digestible phosphorus requirement for forty- to eighty-kilogram pigs.
The objective of this study was to determine the true digestible P requirement of 40- to 60-kg (Exp. 1) and 60- to 80-kg (Exp. 2) pigs by broken-line analysis of growth performance data using 6 levels of true digestible P. In each 3-wk experiment, 108 barrows and gilts were used, and 6 levels of monocalcium phosphate were added to a corn-soybean meal-based diet to establish 6 graded levels of t...
متن کاملTrue digestible phosphorus requirement for twenty- to forty-kilogram pigs.
The objective of this study was to determine the true digestible P requirements of 20- to 40-kg pigs by the broken-line regression analysis of growth performance using 6 levels of true total-tract digestible P. In Exp. 1, 24 barrows (initial BW=25.2±1.0 kg) were used to determine the true total-tract digestibility (TTTD) of P in monocalcium phosphate using the regression method. The dietary tre...
متن کاملTrue ileal digestible tryptophan to lysine ratios in ninety- to one hundred twenty-five-kilogram barrows.
Three experiments were conducted to determine the optimal true ileal digestible (TID) Trp:Lys ratio for 90- to 125-kg barrows. Basal diets contained 0.55% TID Lys and were either corn-based (Exp. 1) or corn- and soybean meal-based (Exp. 2 and 3) diets supplemented with crystalline AA. In addition, each experiment contained a corn-soybean meal control diet. The number of pigs per pen progressive...
متن کاملDietary Available Phosphorus Needs of High Lean Pigs Fed from 9 to 119 kg Body Weight
Eighteen replicates (9 barrows, 9 gilts) were used to estimate the dietary available phosphorus (AP) needs of a high lean strain of pigs during each of four stages of growth (9 to 37, 37 to 65, 65 to 92, and 92 to 119 kg body weight [BW]). Pigs were self-fed a basal diet supplemented with one of six incremental additions of AP from monodicalcium phosphate. Initially (9 to 37 kg), pigs were fed ...
متن کاملPhosphorus in swine. III. Influence of dietary calcium and phosphorus levels and growth rate on mineral content of hair from gilts and barrows or boars.
The mineral content of swine hair was evaluated in two trials, each involving 192 crossbred pigs (barrows and gilts in trial 1 and boars and gilts in trial 2). At 60 to 70 days of age, the pigs were divided into fast and slow growth rate groups, based on daily gain from birth, and assigned to the following dietary treatments, as percentages of NRC recommendations for market hogs: (1) 100% Ca an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Revista Brasileira de Zootecnia
سال: 2016
ISSN: 1516-3598
DOI: 10.1590/s1806-92902016000500006