Egg Production

In a pen study conducted with Hyline W36 and W77 strains, it was shown that the addition of Hemicell^® increased egg production during the period from 18 to 66 weeks by approximately 1% - this improvement was statistically significant. The addition of Hemicell^® to layers being fed the lower energy diets caused this group to perform as well as or better than hens fed the higher energy diet without the enzyme. Please see Table 1 and Figure 1 for further results from this experiment.

Table 1 – Impact of Hemicell^® on Layer Performance
Metabolizable Energy	Hemicell^®	Egg Weight (lb/case)	Feed Intake (lb/100/d)	Hen-Day Production (%)
Control	-	47.62^a	23.01^a	77.95^b
	+	47.72^b	23.17^a	78.79^a
	Difference	0.2%	0.7%	1.1%
Control, less 45 kcal/lb	-	47.40^a	23.67^a	77.15^d
	+	47.46^a	23.75^a	77.99^c
	Difference	0.1%	0.3%	1.1%

In a second pen study conducted with Hyline W36 birds, it was shown that the addition of Hemicell^® increased egg production during the period from 18 to 66 weeks by approximately 1.7% - this improvement was statistically significant (Table 2).

Table 2 – Impact of Hemicell^® on Hen-Housed Production at Varying Amino Acid Densities
Hemicell^®	Amino Acid Density (% of standard)
Hemicell^®	80	90	100	110	Average
-	71.03^a	74.64^a	77.27^a	77.05^a	75.00^a
+	73.22^b	75.86^b	76.96^b	78.00^b	76.26^b
Difference	2.19	1.22	-0.31	1.95	1.26

A large commercial field trial was conducted with 3 houses containing 57,300 Hyline W36 birds per house. This trial confirmed the production benefits of Hemicell^® (Table 3).

Table 3 – Effect of Hemicell^® on Hen-Housed Production in a Large Commercial Field Trial
Hemicell^®	Eggs/HH	Egg Weight (lb/weight)	Feed intake (lb/100)	Mortality (%)	Feed/egg ratio	Uniformity (%)
+	320.6	47	20.95	6.31	1.97	77
-	311.9	47	20.66	6.00	2.01	76
-	292.9	48	20.67	7.37	2.07	55
Difference¹	+6.2	-1.0%	+1.4%	-5.9%	+3.6%	+17.5%