نتایج جستجو برای: lasting for 9 weeks. three levels of hay and corn silage namely: 1) 10% alfalfa

تعداد نتایج: 25498726  

Journal: :علوم دامی ایران 0
امیر اکبری افجانی دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران ابوالفضل زالی استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران مهدی گنج خانلو استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران مهدی دهقان بنادکی استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران

the effect of different levels of alfalfa hay and corn silage, in early lactation diet, on milk production and on milk components in holstein cows was investigated. fifteen holstein cows (37 ±10 dim) were taken in a completely randomized design experiment, lasting for 9 weeks. three levels of hay and corn silage namely: 1) 10% alfalfa -30% silage corn (diet 1), 2) 20% alfalfa -20% silage corn (...

Journal: :علوم دامی ایران 0
حسین ذکریا پور پردیس کشاورزی و منابع طبیعی دانشگاه تهران مهدی گنج خانلو پردیس کشاورزی- دکتری تغذیه دام ابوالفضل زالی پردیس کشاورزی و منابع طبیعی دانشگاه تهران امیر اکبری افنجانی پردیس کشاورزی و منابع طبیعی دانشگاه تهران

a number of 36 holstein young bulls (initial bw of 345±61 kg) were randomly assigned to 6 dietary treatments, following a 3 × 2 factorial arrangement, with three concentrate levels of fish oil (0, 1.5 and 3 % of dm) and 2 levels of alfalfa hay versus corn silage (10 and 20 % of alfalfa hay forage versus 20 and 10 % of corn silage) were used to investigate the effect of fish oil supplementation ...

Journal: :تولیدات دامی 0
سمیه معینی زاده دانش آموختة کارشناسی ارشد، گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران علی اکبر خادم دانشیار گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران علی اسدی الموتی استادیار گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران احمد افضل زاده دانشیار گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران

the objectives were to investigate the effects of addition of alfalfa hay as an absorbent on fermentationquality and effluent production of corn silage. three levels of corn forage with dry matter (dm) contentsof 18.3, 21.7 and 25.5 percent were supplemented with 0, 5, 10, and 20 percent alfalfa hay, on as fedbasis, and ensiled in three replicates in polyvinyl chloride mini-silos in a completel...

A. Teimouri Yansari, S. Yousefian Y. Chashnidel

Two experiments were carried out to evaluate the effects of indigestible neutral detergent fiber (iNDF) of ration for estimation of rumen degradability of fiber in sheep. In experiment 1, to determine feed iNDF, four ruminal fistulated Zel ewes were used. Three grams of alfalfa hay, corn silage, barley grain, wheat bran, ration 1 (including alfalfa hay and concentrate), and ration 2 (including ...

ژورنال: علوم آب و خاک 2007
حسن نصیری مقدم, , محسن دانش مسگران, , سعید سبحانی‌راد, , مهدی بهگر, ,

This study was conducted to investigate the effect of formic and sulphuric acids on chemical composition, dry matter (DM) and crude protein (CP) degradability of alfalfa silage and its effect on early lactating Holstein cow as three trials. In the first trial, chopped alfalfa (22 and 33% DM) was ensiled with three levels of formic acid (0.0, 15 and 20 ml/kg DM) and two levels of sulphuric acid ...

حسن نصیری مقدم, , محسن دانش مسگران, , سعید سبحانی‌راد, , مهدی بهگر, ,

This study was conducted to investigate the effect of formic and sulphuric acids on chemical composition, dry matter (DM) and crude protein (CP) degradability of alfalfa silage and its effect on early lactating Holstein cow as three trials. In the first trial, chopped alfalfa (22 and 33% DM) was ensiled with three levels of formic acid (0.0, 15 and 20 ml/kg DM) and two levels of sulphuric acid ...

2007
E. E. Ferdinand J. E. Shirley E. C. Titgemeyer J. M. DeFrain A. F. Park D. E. Johnson R. T. Ethington

We evaluated the effect of wet corn gluten feed and a novel product containing raw soybean hulls and corn steep liquor on performance in lactating dairy cows. Forty-six multiparous Holstein cows were used in a randomized incomplete block design. Cows were housed in tie stalls for the first 13 weeks of lactation and moved to group pens for the remainder of the study. Cows were blocked by calving...

Journal: :علوم دامی ایران 0
حسین ذکریاپور بهنمیری دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران مهدی گنج خانلو استادیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران ابوالفضل زالی دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

abstract in this study 36 holstein bulls (initial bw of 345±61 kg) were randomly assigned to 6 dietary treatments, following a 3×2 factorial arrangement, with 3 concentrate level of fish oil (0, 1 and 2.1% of dm) and 2 levels of alfalfa hay versus corn silage (10 and 20 % of alfalfa hay forage) to investigate the effects of fish oil supplementation and ratio of alfalfa hay and corn silage in di...

Journal: :Journal of dairy science 1996
A N Hristov G A Broderick

Six ruminally cannulated cows were used in an experiment with a 3 x 3 Latin square design. Three all forage diets-alfalfa silage, alfalfa hay, or corn silage plus 2.2% urea (DM basis)-were fed for ad libitum intake four times daily. The microbial protein marker 15NH3 and the liquid marker Cr-EDTA were infused continuously into the rumen for 72 and 48 h, respectively; the solid marker, Yb-labele...

2009
U. Polat H. Gencoglu I. I. Turkmen

The aim of this experiment was to investigate the effects of partial replacement of corn silage with long alfalfa hay and/or coarse chopped wheat straw on biochemical parameters in late lactating Holstein primiparous dairy cows. Twelve late lactating Holstein primiparous cows including four cows equipped with a rumen cannula, averaging 210 ± 20 days in milk and weighing 575 ± 50 kg were randoml...

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