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English :
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Effect of some feed additives on milk yield and composition of lactating buffaloes fed on silage
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Arabic :
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تاثير بعض الإضافات الغذائية علي إنتاج وتركيب لبن الجاموس المغذى على السيلاج .
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| Abstract |
Interest in the use of direct-fed microbials as feed additives for high producing dairy buffaloes has been increased noticeably in the last decade. The present study aimed to investigate the effect of lactosacc or mineral clay (dolomite) addition on the performance of lactating buffaloes fed corn stover ensiled with or without rumen content.
Three types of silages, silage of corn plant with ears, silage of corn stover alone and silage of corn stover containing 15% rumen content were used in the experimental rations.
The aim of the present study is the improvement of milk yield and composition by dairy buffaloes. Also, the benefit use of byproducts of crops in feeding dairy buffaloes..
Results could be summarized as follows:
1- The digestibilities of DM, NDF, ADF and ADL increased when buffaloes were fed on corn stover alone when compared with those fed on silage of corn plant with ears and silage of corn stover with rumen content being (54.08, 61.29, 57.65 and 51.63%) vs (52.08, 53.22, 51.48 and 42.87%) or (50.27, 54.84, 51.84 and 44.18%), respectively.
2- The addition of lactosacc to silage of corn stover alone or with rumen content insignificantly decreased DM and OM digestibilities, being, [(51.68 and 68.91%) vs (54.08 and 69.67%)] or [(46.72 and 63.11%) vs (50.27 and 67.32%)], respectively. On the other hand, the addition of lactosacc to silage of corn stover alone or with rumen content had no effect on digestibilities of CP, EE, NDF, ADL, ADF, hemicellulose and cellulose.
3- The addition of dolomite (3%) to silage of corn stover alone or with rumen content increased the digestibilities of EE and NFE, but it had no effect on the digestibilities of DM and CP. However, it decreased the digestibilities of OM, NDF, ADF, ADL, hemicellulose and cellulose.
4- The nutritive value (TDN, SE and DCP) of silage of corn plant with ears was higher than silage of corn stover. The addition of lactosacc to silage of corn stover alone had no effect on the values of TDN, SE and DCP, but it decreased the nutritive value as TDN and SE when added to silage of corn stover with rumen content. The addition of dolomite to silage of corn stover alone or with rumen content decreased TDN and SE, but it had no effect on DCP value.
5- Feeding buffaloes on silage of corn plant with ears increased milk yield and 7% FCM when compared with silage of corn stover alone being, 8.95 and 9.41 kg/d vs 8.79 and 8.32 kg/d, respectively. The addition of lactosacc to silage of corn stover alone or with rumen content insignificantly increased actual milk yield while it insignificantly decreased the 7% FCM yield. The addition of dolomite to silage of corn stover alone or with rumen content insignificantly increased both actual milk yield and 7% FCM yield being, (9.32 and 8.97 vs 8.79 and 8.32 kg/d) or (9.66 and 9.18 vs 9.12 and 8.51 kg/d), respectively.
6- The milk composition of buffaloes fed silage of corn stover alone or with rumen content were decreased when compared with those fed silage of corn plant with ears alone or with rumen content. The addition of lactosacc to corn stover alone or with rumen content increased milk lactose and SNF content, but it decreased the milk fat, protein and total solids content.
7- The addition of dolomite to silage of corn stover alone or with rumen content insignificantly increased the milk fat, and TS. But, it significantly (P<0.05) increased SNF and ash content, while, it had no effect on milk protein and lactose content by dairy buffaloes.
8- Milk energy significantly decreased in animals fed silage of corn stover alone or with rumen content when compared with those fed on silage of corn plant with ears, being (1048.08 k cal/kg or 1037.70 vs 1153 k cal/kg milk), respectively. The addition of lactosacc to silage of corn stover alone or with rumen content insignificantly decreased milk energy of dairy buffaloes, being (1025.02 vs 1048.08 k cal/kg milk) or (1020.41 vs 1037.7 k cal/kg milk), respectively. The addition of dolomite to silage corn stover alone or with rumen content insignificantly increased milk energy of buffaloes being (1057.3 vs 1048.08 k cal/kg milk) or 1045.77 vs 1037.7 k cal/kg milk), respectively.
9- Feed efficiency as kg 7% FCM/kg DM, kg 7% FCM/kg TDN, kg 7% FCM/kg SE and kg 7% FCM/kg DCP increased in animals fed silage of corn plant with ears when compared with those fed silage of corn stover alone or with rumen content. The addition of lactosacc and dolomite had no effect on feed efficieny.
It could be concluded that the addition of lactosacc and dolomite to silage of corn stover improved milk production, milk fat and lactose content for lactating buffaloes.
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| Publication year |
2001
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى- شارع نادى الصيد - الدقى - الجيزة
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| Availability number |
752
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| Organization Name |
Animal Production Research Institute (APRI)
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| Country |
Egypt
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| Department |
Animal Nutrition Research Departement
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| Author(s) from ARC |
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| Agris Categories |
Animal husbandryFeed additives
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AGROVOC
TERMS |
Buffalo milk.
Chemical composition.
Feed additives.
Milk yield.
Silage.
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| Publication Type |
PhD Thesis
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