312
Comparison of spray dried bovine plasma versus spray dried porcine plasma in diets for weaned pigs
Weaned pigs (average age at weaning, 21 ± 2 d; average BW at weaning, 6.8 ± 0.9 kg) were fed one of five dietary treatments for 14 d after weaning to determine if pig performance variables were affected by diets containing two separate manufacturing lots of either 6.0% spray dried bovine plasma (SDBP1, SDBP2) or 6.0% spray dried porcine plasma (SDPP1, SDPP2) compared to a control diet containing 9.65% soy protein concentrate (SPC). All diets were fed ad libitumin mash form and were formulated to contain 1.45% SID lysine and 3.41 Mcal ME/kg. Diets were non-medicated and contained corn, soybean meal, dried whey, and SPC or the spray dried plasma source. Pigs were weaned as two separate groups approximately two weeks apart into two different un-cleaned nursery rooms to create additional stress at weaning. There were a total of 11 pens (5-6 pigs/pen) assigned per dietary treatment. No pigs died or were removed from the study. Data variables reported in the table are least squares means for dietary treatment. Treatment comparisons of SPC versus average response of all other treatments or average response of pigs fed diets with SDBP versus that of pigs fed diets with SDPP are shown in the table below.
|
Dietary protein source |
|
||||
Variable |
SPC |
SDBP1 |
SDBP2 |
SDPP1 |
SDPP2 |
Pooled SEM |
ADG, g 1 |
119 |
176 |
169 |
172 |
175 |
6.01 |
ADFI, g 1,2 |
177 |
208 |
211 |
244 |
236 |
6.14 |
Gain:feed 1,2 |
0.67 |
0.84 |
0.80 |
0.70 |
0.73 |
0.02 |
Final BW, kg 1 |
8.48 |
9.26 |
9.20 |
9.24 |
9.25 |
0.14 |
1 SPC versus average of all other treatments, P < 0.05. 2 Average of SDBP versus SDPP, P < 0.05. |
||||||
Pigs fed diets with SDBP or SDPP had higher (P < 0.05) ADG, ADFI, gain:feed and final BW than pigs fed the control SPC diet. ADG and final BW of pigs fed diets with either SDBP or SDPP were not different (P > 0.10). Pigs fed diets with SDPP had higher (P < 0.05) ADFI than pigs fed diets with SDBP, while gain:feed of pigs fed diets with SDBP was improved compared to pigs fed diets with SDPP. In conclusion, average final BW of pigs fed diets with either SDBP or SDPP for 14 days post-weaning was approximately 0.7 kg greater than that of pigs fed the diet with SPC.
Keywords: pigs, spray dried bovine plasma, spray dried porcine plasma.