Influence of dietary mineral sources on milk yield and composition of West African Dwarf Does

Abstract

This study investigated the effects of different mineral nutrient sources (local potash ("kaun"), mineral lick and ruminant mineral premix) on milk yield and composition of West African Dwarf does. Twelve WAD goats (first parity does), weighing between 13.00±3.79 and 14.33±4.83 kg, were divided into four groups with three does per treatment; 0% mineral (0MC), 2% local potash (2LP), mineral lick (2ML) and mineral ruminant premix (2RMP). The experiment lasted for 180 days (150 days pregnancy, 30 days milk collection). Data collected on the milk yield and milk composition of WAD does were analysed using One-way analysis of variance (ANOVA), significant means were separated using Duncan Multiple Range Test. Result revealed that for total milk yield and daily milk yield, does in 2ML (5919.67 millilitre/animal, 197.32 millilitre/animal/day), 2LP (5852.00 millilitre/animal, 195.07 millilitre/animal/day) and 2RMP (5131.00 millilitre/animal, 171.03 millilitre/animal/day) had the highest (p<0.05) values with 0MC (1642.67 millilitre/animal, 54.76 millilitre/animal/day) having the least values. For colostrum lactose, 2RMP (4.33±0.15%) and 2PLP (4.10±0.21%) had the highest (p<0.05) values followed by 0MC (3.97±0.27%) and 2ML (3.30±0.25%). While, in milk total solid, 0MC (11.40±0.35%) had the highest (p<0.05) value followed by 2ML (10.43±1.03%) and 2RMP (9.87±0.32%) with 2LP (8.93±0.43%) having the least values. The study concluded that for high milk yield, diets containing 2ML could be fed to does.

Milk Yield, Composition and Growth of Kids of West African Dwarf Does Fed Enterolobium Cyclocarpum Leaves

“…There were significant differences (p<0.05) in the contents of P in the milk of does fed diets 2 (7.49 mg/100g), 3 (11.59 mg/100g) and 4 (4.80 mg/100g). Milk concentrations of P obtained in this study were lower than the concentrations of 84.50 -94.08mg/100ml and 54.67 -62.00mg/100g reported by Bawala et al (2006) and Olaniyi et al (2018) respectively for the milk of WAD does fed diets fortified with mineral from varying sources. Milk Potassium (K) contents ranged from 4.93 -6.12mg/100g.…”

“…Iron contents ranged from 0.05 -0.14mg/100g. Concentrations of Fe obtained in this study were higher than the range of 0.02 -0.05mg/100g reported byOlaniyi et al (2018) for WAD does fed diets with varying mineral sources. Minerals found in milk are derived from digested mineral present in feed.…”

“…Contents of Mg obtained in this study were also within the range of 18.90 -47.61mg/100ml reported for the milk of WAD does fed diets supplemented with Calcium Phosphate and Magnesium Sulphate (Bawala et al, 2006). However, Mg contents obtained in this study were lower than the range (9.40 -10.73mg/100g) reported by Olaniyi et al (2018) for the milk of WAD does fed diets with varying mineral sources. Milk Phosphorus (P) contents ranged from 4.80 -11.59mg/100g.…”

“…The least Ca concentrations of 39.82mg/100g were in the milk of does fed the control diet without EC leaves. The range (39.82 -46.30mg/100g) of milk Ca obtained in this study was lower than the range of 120.98 -131.97mg/100ml and 94.33 -102.33mg/100g reported byBawala et al (2006) andOlaniyi et al (2018) respectively for the milk of WAD does fed diets fortified with different mineral sources.…”