DEVELOPMENT OF FEEDING TECHNOLOGY OF APPLE POMACE IN CALVES
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Date
2017-07-10
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CSKHPKV, Palampur
Abstract
ABSTRACT
The study was conducted with the aim to find out practical method of using apple pomace in
calves. Apple pomace was mixed with wheat straw (WS) in the ratios of 100:1 (AP-100), 85:15
(AP-85), 70:30 (AP-70), 55:45 (AP-55) and 40:60 (AP-40) in anaerobic culture jars for 28 days.
They were ranked on the basis of proximate principles, fibre constituents and fermentation
parameters.AP-85 was the best ratio in terms of nutritive value. AP was mixed with WS in the ratio
of 85:15 and ensiled for 28 days on large scale to evaluate its feeding value for calves. Six male
cow calves were used for estimation of voluntary intake, nutrient intake and digestibility
parameters.
Two metabolic trials were conducted. The first metabolic trial was conducted by using the mixture
of ensiled apple pomace mixed with fresh wheat straw (EAPFWS) in the ratio of 85:15, whereas
the second trial was conducted by feeding ensiled mixture of apple pomace and wheat straw
(EMAPWS) i.e. AP and WS were mixed in the ratio of 85:15 and then ensiled. The DMI (kg/h/d)
was significantly (p≤.05) higher in EMAPWS. Except CP and cellulose, the digestibility of all the
nutrients was increased by ensiling the mixtures of AP+WS. There was an increase in digestibility
by 5.24, 16.21, 7.6, 9.33, 3.42, 23.07, 5.42 and 6.37 per cent, respectively, of DM, EE, CF, NFE,
NDF, ADF, hemicelluloses and OM. DCP intake as percent body weight as well as per kg W0.75 did
not differ significantly. The TDN content as well as TDN intake were significantly (p≤0.05) higher
in EMAPWS as compared to that of EAPFWS. TDN content of EMAPWS was 8 per cent higher
and TDN intake (per cent of body weight) was 14 per cent higher than that of EAPFWS. The
calves in both the treatments were in positive nitrogen and energy balance. Nitrogen retention in
EMAPWS was statistically (p≤0.05) higher than that of EAPFWS. Feeding EMAPWS reduced the
expenditure incurred on feeding to gain one kg body weight, by 25.22 percent than feeding ensiled
AP mixed with fresh WS. So, it was concluded that ensiling AP with WS in the ratio of 85:15 was
the best method to preserve and feed AP to cow calves
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