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Responses of growing-finishing pigs to two levels of a multi-enzyme blend (Natuzyme) as compared to pigs fed a lower energy-higher fiber, or a higher energy-lower fiber diet
Responses of growing-finishing pigs to two levels of a multi-enzyme blend (Natuzyme) as compared to pigs fed a lower energy-higher fiber, or a higher energy-lower fiber diet
Wednesday, March 16, 2016
Grand Ballroom - Foyer (Community Choice Credit Union Convention Center)
Abstract Text: The objective of this study was to evaluate whether the performance of pigs could be maintained when pigs were fed a lower energy diet (ME = 3,423 kcal/kg) with higher fiber from 50% DDGS (NC), compared to a positive control (PC) diet with lower fiber and a maximum of 30% DDGS with an increased energy content from additional added fat (ME =3,476 kcal/kg), when either 193 (NZ1X) or 386 (NZ2X) mg/kg of Natuzyme (a source of xylanase, phytase, cellulase, beta-glucanase, alpha-amylase and protease) was added to the NC diet. A FANCOM feed weighing system measured feed delivered to the individual pens, and weight of pigs (1024 pigs, initial body weight of 50.1 kg) and feed was determined on Day 0, 14, 28, 42, 56, 70 and 83. Blood glucose was measured at day 42 on trial. Data were analyzed as a completely randomized design using GLM in Minitab. On day 83 of the trial, NC (107.4 kg) and NZ2X (108.4 kg) weighed less (P=0.050) than PC (112.4 kg) and NZ1X was intermediate (109.5 kg). In Table 1 is a summary of performance. PC tended to have a 9.4% higher ADFI (P=0.088) than NC, with NZ1X 5.2% and NZ2X 4.3% intermediate. This difference in ADFI resulted in PC consuming 11.1% more energy per day (9,166 vs 8,249 kcal ME/d) than NC. The PC tended to have a 7.8% greater ADG than NC (P=0.062), with NZ1X and NZ2X intermediate. NZ1X and NZ2X tended to have lower mortality (including pulled pigs) than NC, with PC intermediate. No differences were observed in blood glucose (P=0.294), but NC had a 7.7% lower blood glucose (72.8 umol/L) as compared to PC (78.8 umol/L), NZ1X (78.8 umol/L) and NZ2X (79.4 umol/L). In conclusion, PC grew faster than NC and Natuzyme partially recovered the performance difference between NC and PC, and tended to improve survivability of pigs on a lower energy, high DDGS diet (NC).
Table 1 Summary of performance of Day 0 to 83
|
NC |
PC |
NZ1X |
NZ2X |
SE |
P-value |
ADG, g |
821c |
885d |
848c,d |
835c,d |
41 |
0.062 |
ADFI, g |
2,410c |
2,637d |
2,537c,d |
2,515c,d |
147 |
0.088 |
FCRg/g |
2.93 |
2.98 |
3.00 |
3.00 |
0.08 |
0.409 |
Morbidity/Mortality, % |
4.52c |
1.38c,d |
0.81d |
0.98d |
2.41 |
0.051 |
Keywords: Pigs, Enzymes, DDGS