Abstract
The objective of this study was to evaluate the effect of protected soybean meal (SBM) on total milk yield (TMY) and composition, milk energy and body weight (BW) in lactating Meriz does. Eighteen does (BW 33.13±0.41 Kg) were randomly divided into two equal groups, control (untreated soybean meal) (C) and the treated soybean meal chemically treated with formaldehyde (T). Results revealed that protected soybean meal significantly (P<0.001) increased TMY (44.20 vs 34.08 kg), milk fat % (4.14±0.13 vs 3.32±0.06), and yield (25.45±0.75 vs 16.08±0.41 gm/day) , milk protein % (4.86±0.05 vs 4.31±0.04), and yield (30.73±1.02 vs 20.99±0.52 gm/day), and milk energy (3.38±0.05 vs 3.03±0.02 MJ/kg) as compared to control. It can be concluded that protection process of soybean meal increased milk yield, fat and protein content.
Highlights
Protecting high-quality protein sources, such as legumes and seed meals from ruminal fermentation positively affects animal performance
Results revealed that protected soybean meal significantly (P
Soybean meal (SBM) is the most commonly used protein supplement in broiler, beef and dairy rations. It is quite palatable and has a good amino acid balance with high availability (Yoruk et al, 2006).The impact of protected soybean meal on milk production was studied in goats, by Chowdhury et al, (2002), El-Shabrawy (2006), who reported an increase in milk yield in goats fed formaldehyde treated soybean meal compared to those fed untreated soybean meal
Summary
Protecting high-quality protein sources, such as legumes and seed meals from ruminal fermentation positively affects animal performance. Various methods for treating proteins have been used to reduce their degradation in the rumen. Soybean meal (SBM) is the most commonly used protein supplement in broiler, beef and dairy rations. It is quite palatable and has a good amino acid balance with high availability (Yoruk et al, 2006).The impact of protected soybean meal on milk production was studied in goats, by Chowdhury et al, (2002), El-Shabrawy (2006), who reported an increase in milk yield in goats fed formaldehyde treated soybean meal compared to those fed untreated soybean meal. The main objective of this study was to investigate the influence of feeding protected protein of soybean meal on milk yield and composition of this breed
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