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Effects of Partial and Total Substitution of Dietary Spray-Dried Porcine Plasma (SDPP) with Spray-Dried Krill Hydrolysate (SDKH) on Growth Performance, Nutrient Digestibility, and Noxious Gas Emission in Weaning Piglets

Author:
Zhang, S., Ao, X., Kim, In Ho
Source:
Livestock science 2019
ISSN:
1871-1413
Subject:
Duroc, Lactobacillus, Yorkshire (swine breed), barrows, blood, blood proteins, crossbreds, diet, digestibility, gilts, growth performance, hydrolysates, intestines, krill, landraces, nitrogen, piglets, spray drying, urea nitrogen, weaning
Abstract:
The aim of this study was to evaluate the effects of partial replacement of spray-dried porcine protein (SDPP) with spray-dried krill hydrolysate (SDKH) on growth performance, nutrient digestibility, noxious gas emission, fecal score , blood profile of post-weaning piglets during the first 2 weeks, and the subsequent impact of these criteria on weaned piglets. A total of 200 crossbred piglets [(Duroc × Yorkshire) × Landrace] weaned at day 21with an initial BW of 6.85 ± 1.00 kg was allocated into 1 of the following 5 dietary treatments:1) CON, Phase 1(Basal diet without plasma protein); TRT1, Phase 1(4% Plasma protein); 3) TRT2, Phase 1(3% Plasma protein + 1% SDKH); 4) TRT3, Phase 1 (2% Plasma protein + 2% SDKH); 4) TRT4 (4% SDKH) in this 6-week feeding trial. During phase 2, all the piglets were fed the same diets. (Phase 1: 0-2nd week; Phase 2: 3rd -6th week). For each treatment, 8 replication pens consisting of five pigs (3 barrows and 2 gilts) per pen were used in a randomized complete block design. In phase 1, the weaned piglets fed the diets containing 4% SPDD had greater BW than the ones fed other treatment diets (P<0.05), and the weaned piglets fed the diets formulated with 1, 2 or 4%SDKH showed bigger BW than that fed CON diet(P<0.05). In phase 1 and the end of this trial, the highest ADG was found in Trt 1 and the lowest ADG was detected in CON treatment(P<0.05). There was no significant difference in ADG in piglets fed other diets (P > 0.05). Similarly, in phase 1, the piglets fed the 4% SDPP showed a better nitrogen digestibility compared to the ones fed other dietary treatments (P<0.05). Trt.2 and Trt.3 revealed a greater nitrogen digestibility than Trt.4 and CON(P<0.05). The Blood Urea Nitrogen (BUN) concentration decreased with increasing SDPP inclusion level (P<0.05). SDKH treatment showed a lower BUN concentration than CON(P<0.05). No significant difference was observed in fecal score, intestinal E.coli and Lactobacilli and noxious gas emission throughout the trial (P>0.05). In conclusion, dietary SDPP could not be partially or totally replaced by SDKH because of the negative effect on growth performance and nutrient digestibility in weaning pig.
Agid:
6496096