. 2021 Mar 15;100(7):101134. doi: 10.1016/j.psj.2021.101134

Table 6.

Effect of dietary spray-dried plasma on growth performance of broilers from day 15 to 42 (Experiment 2).

	Day 15 to 28 (Parameters measured)²				Day 29 to 42 (Parameters measured)²
Treatments¹	Body weight (BW, kg/bird)³	Body weight gain (BWG, kg/bird)	Feed intake (FI, kg/bird)	FCR⁴ (Kg:Kg)	BW (kg/bird)³	BWG (kg/bird)	FI (kg/bird)	FCR⁴ (Kg:Kg)
CON	1.46	1.01^ab	1.25^ab	1.246^ab	2.53^ab	1.15^ab	1.72	1.500^b
BMD	1.60	1.10^ab	1.33^ab	1.206^ab	2.54^ab	1.09^b	1.56	1.430^b
SDP	1.46	1.00^ab	1.15^ab	1.161^ab	2.44^ab	1.04^b	1.54	1.480^b
CON-SE	1.48	1.03^ab	1.33^a	1.307^a	2.84^ab	1.33^ab	2.02	1.515^b
BMD-SE	1.55	1.27^a	1.24^ab	1.001^b	2.93^a	1.43^a	2.03	1.425^b
SDP-SE	1.36	0.89^b	1.11^b	1.251^ab	2.33^b	1.03^b	1.80	1.759^a
P-value	0.2046	0.0128	0.0273	0.0209	0.0159	0.0069	0.0190	< 0.0001
Pooled SEM (24)	0.065	0.058	0.046	0.053	0.112	0.069	0.103	0.023
Diet Effect Means
CON	1.47	1.02^b	1.29^a	1.276^a	2.68^a	1.24^a	1.87	1.508^b
BMD	1.57	1.18^a	1.28^a	1.104^b	2.74^a	1.26^a	1.79	1.427^c
SDP	1.41	0.95^b	1.13^b	1.206^ab	2.38^b	1.04^b	1.67	1.620^a
Pooled SEM	0.046	0.041	0.033	0.037	0.079	0.049	0.073	0.016
Salmonellachallenge effect means
NC⁵	1.51	1.04	1.24	1.204	2.50	1.10^b	1.61^b	1.470^b
SE	1.46	1.06	1.23	1.186	2.70	1.26^a	1.95^a	1.566^a
Pooled SEM	0.037	0.033	0.027	0.030	0.065	0.040	0.060	0.013
Sources of variation	Probability
Dietary treatment	NS⁶	0.0044	0.0069	0.0209	0.0178	0.0122	NS	< 0.0001
Challenge¹	NS	NS	NS	NS	0.0502	0.0118	0.0017	0.0003
Diet x Challenge	NS	NS	NS	0.0302	NS	NS	NS	< 0.0001

^a,bMean values bearing different superscript letters within a column are significantly different (P < 0.05).

Treatment CON consisted of chicks fed unmedicated corn-soybean meal (SBM) basal without SDP; Treatment BMD consisted of chicks given unmedicated corn-SBM basal into which bacitracin methylene disalicylate (BMD) was added at 0.055 g/kg diet; Treatment SDP consisted of chicks given unmedicated corn-SBM basal into which SDP was added at 30 g/kg diet; Treatments CON-SE, BMD-SE, and SDP-SE, consisted of chicks that were given diets similar to CON, BMD, and SDP, respectively, and were each inoculated with 7.48 × 10⁸ CFU Salmonella Enteritidis /mL at 1 d of age.

Values represent the mean of 4 replicate pens per treatment.

Values are based only on weight of live birds.

⁴

FCR = feed conversion ratio calculated as feed-to-gain ratio and adjusted for mortality by including the gains of dead birds in the calculations.

⁵

NC = nonchallenged treatments. This represents pooled mean of treatments in which chicks were not challenged with Salmonella spp. These treatments are CON, BMD, and SDP.

⁶

NS, not significant.