+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effect of early feed restriction on physiological responses, performance and ascites incidence in broiler chickens raised in normal or cold environment



Effect of early feed restriction on physiological responses, performance and ascites incidence in broiler chickens raised in normal or cold environment



Animal 11(2): 219-226



Intensive selection of broilers for faster growth and better feed efficiency resulted in greater susceptibility to metabolic disorders such as ascites syndrome, which is one of the major causes of mortality and economic loss in broiler industry. Whereas cool temperature is one of the primary triggers for ascites, early feed restriction (FDR) significantly alleviates its incidence and mortality. However, little is known about effects of FDR, cold environmental temperature and their interaction on physiological responses in broiler chickens. For this purpose, 320 one-day-old male broilers were divided into two treatment groups of Ad libitum (Ad) and feed restricted (FR) with eight pen replicates each. Chickens in FR group underwent feed access limitation from days 7 to 14 of age. On day 21 half of the birds (four pens) in each group exposed to the cold temperature (CT) and the other half (four pens) continued at normal temperature (NT). Average daily feed intake, average daily weight gain and feed conversion ratio (FCR) were measured at days 7, 14, 21, 28 and 42. At 39 and 46 days of age two chicks with a BW around the pen average were selected from each pen and slaughtered after collecting blood samples. Then, relative weight of internal organs and right ventricle weight per total ventricle weight (RV : TV) ratio were calculated. Compared with NT group, CT birds had higher daily feed intake and FCR (P<0.05) from day 28 to 42. Cumulative ascites mortality in CT chickens was higher (P<0.001) than NT chicks. Within the CT group, ascites mortality in FR chickens was reduced (P<0.001) to 1.25% compared with 8.75% in Ad chicks. Birds in CT group had significantly (P<0.05) thicker right ventricle and greater relative weight of heart, hematocrit and triiodothyronine concentration. However, none of these parameters were affected by FDR. Under cold stress conditions, FDR reduced activity of alanine aminotransferase and aspartate aminotransferase (P<0.05). Serum triglyceride, cholesterol, high-density lipoprotein and total protein were not influenced by either temperature or feeding regimen. In conclusion, these findings suggest that FDR reduces ascites incidence mainly by allowing better development of internal organs, which helps them to cope with the high metabolic pressure and suffer less damage.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 057703274

Download citation: RISBibTeXText

PMID: 27453160

DOI: 10.1017/s1751731116001555


Related references

Effects of early feed restriction on performance and ascites development in broiler chickens subsequently raised at low ambient temperature. Journal of Applied Poultry Research 15(1): 9-19, 2006

The effect of growth performance and carcass traits on the incidence of ascites in broiler chickens in response to short term feed restriction and litter oiling. Poultry Science 75(Suppl. 1): 6, 1996

Effects of early and late feed restriction or feed withdrawal on growth performance, ascites and blood constituents of broiler chickens. Acta Agriculturae Scandinavica Section A, Animal Science 54(3): 152-158, 2004

Effect of full feed and early feed restriction on broiler performance, abdominal fat level, cellularity, and fat metabolism in broiler chickens. Poultry Science 74(10): 1636-1643, 1995

Effect of dietary verapamil on physiological responses and ascites syndrome mortality in broiler chickens exposure to cold temperature. Poultry Science 72(Suppl. 1): 106, 1993

The Effects of the Hot, Humid Tropical Climate and Early Age Feed Restriction on Stress and Fear Responses, and Performance in Broiler Chickens. Asian-Australasian Journal of Animal Sciences 22(11): 1581-1586, 2009

Effect of variation in dietary profile and early feed restriction on performance of male broiler chickens. 2007

Effect of early feed restriction on ascites induced by cold temperatures and growth performance in broilers. Journal of Applied Animal Research 26(2): 89-92, 2004

Feed restriction in broiler chickens for the prevention of ascites syndrome and its effect on net income. Agrociencia Montecillo 38(1): 33-41, 2004

Performance of broiler chickens during and following feed restriction at an early age. British Poultry Science 42(Suppl.): S111, 2001

Performance of broiler chickens during and following feed restriction at early age. Journal of Science and Technology of Agriculture and Natural Resources 6(4): 117-126, 2003

Effect of feed restriction on feed efficiency and incidence of sudden death syndrome in broiler chickens. Poultry Science 67(7): 1102-1104, 1988

The performance of broiler chickens during and following of different feed restriction methods at an early age. Journal of Dairy Science 84(Suppl. 1): 402, 2001

Responses of different strains of australian broiler chickens to feed restriction at an early age. Australian Journal of Agricultural Research 43(6): 1253-1258, 1992

Research Note: Effect of Feed Restriction on Feed Efficiency and Incidence of Sudden Death Syndrome in Broiler Chickens. Poultry Science 67(7): 1102-1104, 1988