<span style="font-family:Verdana;">The growth productivity of broilers is influenced by improving growth performance through improving body weight, average daily gain</span><span style="f...<span style="font-family:Verdana;">The growth productivity of broilers is influenced by improving growth performance through improving body weight, average daily gain</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and feed conversion rate. The objective of the study was to determine the effect of quantitative feed restriction duration on growth performance and carcass characteristics of broilers. A total of 144 day-old broiler chicks were reared in a deep litter system until slaughter at 42 days. Chicks were randomly allocated to three treatments which were replicated three times with 16 birds per replicate. The three treatments were the control (T1), one week of feed restriction (T2), and two weeks of feed restriction (T3). Birds were fed with starter, grower and finisher diets. The average daily gain (ADG), average daily feed intake (ADFI)</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and the feed conversion ratio (FCR) were computed for each week. Carcass weight</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">and internal organs weights were measured. The body weight gained by the birds in T1 was similar </span><span style="font-family:Verdana;">to</span><span style="font-family:Verdana;"> the birds that were restricted for a week. The treatments had a significant effect on the average daily gain in week</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> 4, 5</span><span style="font-family:Verdana;">,</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> and 6. The ADG for T2 was higher (P < 0.05) at week 5 after 1 week of restriction, than T1 and T3. The feed conversion ratio was significantly higher in T3 after 2 weeks of restriction. In T2 and T3, feed intake was significantly lower than in birds fed </span><i><span style="font-family:Verdana;">ad</span></i></span><i><span style="font-family:;" "=""> </span></i><i><span style="font-family:Verda展开更多
文摘<span style="font-family:Verdana;">The growth productivity of broilers is influenced by improving growth performance through improving body weight, average daily gain</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and feed conversion rate. The objective of the study was to determine the effect of quantitative feed restriction duration on growth performance and carcass characteristics of broilers. A total of 144 day-old broiler chicks were reared in a deep litter system until slaughter at 42 days. Chicks were randomly allocated to three treatments which were replicated three times with 16 birds per replicate. The three treatments were the control (T1), one week of feed restriction (T2), and two weeks of feed restriction (T3). Birds were fed with starter, grower and finisher diets. The average daily gain (ADG), average daily feed intake (ADFI)</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and the feed conversion ratio (FCR) were computed for each week. Carcass weight</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">and internal organs weights were measured. The body weight gained by the birds in T1 was similar </span><span style="font-family:Verdana;">to</span><span style="font-family:Verdana;"> the birds that were restricted for a week. The treatments had a significant effect on the average daily gain in week</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> 4, 5</span><span style="font-family:Verdana;">,</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> and 6. The ADG for T2 was higher (P < 0.05) at week 5 after 1 week of restriction, than T1 and T3. The feed conversion ratio was significantly higher in T3 after 2 weeks of restriction. In T2 and T3, feed intake was significantly lower than in birds fed </span><i><span style="font-family:Verdana;">ad</span></i></span><i><span style="font-family:;" "=""> </span></i><i><span style="font-family:Verda
