نتایج جستجو برای: 14 and 21 days of age decreased daily weight gain and feed intake significantlyp
تعداد نتایج: 24167069 فیلتر نتایج به سال:
This study was performed to determine the effects of different levels of chromium methionine (Cr-Met)supplementation on growth performance, meat oxidative stability and ruminal metabolites in male kids. Thirty-two male Mahabadi goat kids, with an average initial body weight (BW) of 22 ± 2 kg at 4 months of age, were allocated in a completely randomized design with four treatments: control witho...
The objective of this study was to evaluate the performance of male broiler chickens in the period from 21 to 42 days of age fed diets with increasing levels of sunflower meal (SM) supplemented with an enzyme complex (EC). A total of 1920 animals of the Cobb strain were distributed in a randomized block design in a 4 × 3 factorial arrangement (four SM levels and three enzymes utilization types)...
this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...
an experiment was conducted to investigate the effects of different levels of rapeseed meal and diet formulation based on total and digestible amino acid (aa) using 192 day old ross 308 male broiler chicks. experiment was carried out using a complete block design with 4*2 factorial arrangements. the factors included different levels of rapeseed meal (0, 10, 20 and 30%) and two method of aa form...
Thirty-six Merino lambs (8 to 9 wk of age, and 15.3 ± 0.13 kg of initial BW) 1 were used to evaluate the effects of the inclusion of 120 g sugar beet pulp (replacing 2 barley) and of the addition of 20 g sodium bicarbonate per kg concentrate on feed 3 intake, digestibility, animal performance and carcass characteristics in fattening lambs. 4 Animals were housed individually and fed barley straw...
for determination and comparison between feeding value of rape silage and its hay, two groups of seven head weaned lamb with the same body weight and breed were fed for a 100 days period of these feeds and a same amount of barley as a nutritive supplement. each animal was fed approximately 130gr of crude protein and 1730 kcal net energy (nrc standard recommendation 1985). the animals were weigh...
introduction: sheep has played an important role in meat production and income generation in iranian farming systems. their profitability, however, is highly depended on nutrient supply. drinking water is major nutrient that is responsible for different utilization of nutrients and thereby productivity and gain of animals in most parts of the world. inadequate water and its quality such as sali...
This study was conducted to compare the feedlot performance and growth traits of Lori-Bakhtiari (n=39), Romanov × Lori-Bakhtiari (n=38) and Pakistani × Lori-Bakhtiari crossbred (n=12) lambs during two consecutive years. Lambs were weaned at the age of 90 ± 5 days. After weaning and preliminary fattening period, three groups of lambs were fattened for 90 days in the same conditions. The resul...
an experiment was conducted to evaluate the effects of dietary crude protein (cp) and lysine levels on performance and nitrogen excretion in broiler chickens. four hundred twenty 7-day old chickens from ross 308 strain were randomly allotted to 6 dietary treatments with 5 replicates of 14 chicks each (7 male and 7 female chicks). the cp levels were 17, 18, and 20 percent and lysine levels were ...
Thirty-two crossbred wether lambs (initial live-weight 31 kg) were fed on a diet (metabolizable energy (ME) 12.8 MJ/kg) ad lib. (ADLIB) or restricted to maintain body-weight (MAINT) for a 21 d period. On days 0, 7, 14 and 21, four lambs per treatment were slaughtered, visceral organs weighed and tissues sampled. During the 21 d period, ME intake in ADLIB lambs increased quadratically with an av...
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