Effects of genetic selection on growth rate and intestinal structure in the domestic fowl (Callus domesticus)

Effects of pre-slaughter fasting on broiler welfare, meat quality, and intestinal integrity

“…These results are consistent with the findings of Thompson & Applegate (2006), who observed that there are villi height, crypt depth, and cell migration and proliferation changes in the intestinal segments of birds submitted to long fasting times (< 24 h), but these changes are not evident when short fasting times (< 24 h) are applied. Duodenum and jejunum villi heights measured in the present study was consistent with those reported by Mitchel and Carlisle (1992) and Okamoto et al (2009) of 938 μm, in average, in the jejunum and by Smith et al (1990), of 1310 μm and 850 μm in the duodenum of broilers selected for fast growth and non-selected broilers, respectively.…”

Effects of pre-slaughter fasting on broiler welfare, meat quality, and intestinal integrity

“…These results are consistent with the findings of Thompson & Applegate (2006), who observed that there are villi height, crypt depth, and cell migration and proliferation changes in the intestinal segments of birds submitted to long fasting times (< 24 h), but these changes are not evident when short fasting times (< 24 h) are applied. Duodenum and jejunum villi heights measured in the present study was consistent with those reported by Mitchel and Carlisle (1992) and Okamoto et al (2009) of 938 μm, in average, in the jejunum and by Smith et al (1990), of 1310 μm and 850 μm in the duodenum of broilers selected for fast growth and non-selected broilers, respectively.…”

Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus

“…The current findings also debunk the hypothesis that differences between the histological parameters of fast and slow growing chickens are supported by metabolic carcass weight, and therefore, absorptive surfaces of the small intestines are directly related to metabolic requirements (Mayhew and Middleton, 1985). Furthermore, contrary to the current findings, James et al (1988); Smith et al (1990) and Khadhin et al (2010) reported that the presentation of nutrients within the small intestine constitutes one of the most potent ways to modify villus structures for different groups of chickens selected for higher growth rate. Numerically, the duodenum had the highest villi height followed by jejunum and the lowest heights were observed for the ileum in the current study in Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus both breeds and sexes, which is in agreement with the findings of Khadhin et al (2010), Yamauchi (2002) and Lidia et al (1998).…”

Histomorphometric evaluation of small intestinal mucosa of red jungle fowl and commercial broiler from one day to four months of age

“…These results appeared to differ from those reported by Sklan and Noy (2003) who stated that the duodenum and ileum surface area reaches a plateau after 11 days, whereas the jejunal surface area continues to increase until 19 days, or all the intestinal segments continues to increase until 19 days (Thouvenelle et al, 1995). However, the results in this study are in line with Smith et al (1990) and Mitchell and Smith (1991) who observed that the villus surface area of the small intestinal segments is increase in the heavy breeds more than light breeds.…”

Effects of pre-slaughter fasting on broiler welfare, meat quality, and intestinal integrity

“…These results are consistent with the findings of Thompson & Applegate (2006), who observed that there are villi height, crypt depth, and cell migration and proliferation changes in the intestinal segments of birds submitted to long fasting times (< 24 h), but these changes are not evident when short fasting times (< 24 h) are applied. Duodenum and jejunum villi heights measured in the present study was consistent with those reported by Mitchel and Carlisle (1992) and Okamoto et al (2009) of 938 μm, in average, in the jejunum and by Smith et al (1990), of 1310 μm and 850 μm in the duodenum of broilers selected for fast growth and non-selected broilers, respectively.…”

Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus

“…The current findings also debunk the hypothesis that differences between the histological parameters of fast and slow growing chickens are supported by metabolic carcass weight, and therefore, absorptive surfaces of the small intestines are directly related to metabolic requirements (Mayhew and Middleton, 1985). Furthermore, contrary to the current findings, James et al (1988); Smith et al (1990) and Khadhin et al (2010) reported that the presentation of nutrients within the small intestine constitutes one of the most potent ways to modify villus structures for different groups of chickens selected for higher growth rate. Numerically, the duodenum had the highest villi height followed by jejunum and the lowest heights were observed for the ileum in the current study in Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus both breeds and sexes, which is in agreement with the findings of Khadhin et al (2010), Yamauchi (2002) and Lidia et al (1998).…”

Histomorphometric evaluation of small intestinal mucosa of red jungle fowl and commercial broiler from one day to four months of age

“…These results appeared to differ from those reported by Sklan and Noy (2003) who stated that the duodenum and ileum surface area reaches a plateau after 11 days, whereas the jejunal surface area continues to increase until 19 days, or all the intestinal segments continues to increase until 19 days (Thouvenelle et al, 1995). However, the results in this study are in line with Smith et al (1990) and Mitchell and Smith (1991) who observed that the villus surface area of the small intestinal segments is increase in the heavy breeds more than light breeds.…”

Effects of pre-slaughter fasting on broiler welfare, meat quality, and intestinal integrity

“…These results are consistent with the findings of Thompson & Applegate (2006), who observed that there are villi height, crypt depth, and cell migration and proliferation changes in the intestinal segments of birds submitted to long fasting times (< 24 h), but these changes are not evident when short fasting times (< 24 h) are applied. Duodenum and jejunum villi heights measured in the present study was consistent with those reported by Mitchel and Carlisle (1992) and Okamoto et al (2009) of 938 μm, in average, in the jejunum and by Smith et al (1990), of 1310 μm and 850 μm in the duodenum of broilers selected for fast growth and non-selected broilers, respectively.…”

Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus

“…The current findings also debunk the hypothesis that differences between the histological parameters of fast and slow growing chickens are supported by metabolic carcass weight, and therefore, absorptive surfaces of the small intestines are directly related to metabolic requirements (Mayhew and Middleton, 1985). Furthermore, contrary to the current findings, James et al (1988); Smith et al (1990) and Khadhin et al (2010) reported that the presentation of nutrients within the small intestine constitutes one of the most potent ways to modify villus structures for different groups of chickens selected for higher growth rate. Numerically, the duodenum had the highest villi height followed by jejunum and the lowest heights were observed for the ileum in the current study in Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus both breeds and sexes, which is in agreement with the findings of Khadhin et al (2010), Yamauchi (2002) and Lidia et al (1998).…”

Histomorphometric evaluation of small intestinal mucosa of red jungle fowl and commercial broiler from one day to four months of age

“…These results appeared to differ from those reported by Sklan and Noy (2003) who stated that the duodenum and ileum surface area reaches a plateau after 11 days, whereas the jejunal surface area continues to increase until 19 days, or all the intestinal segments continues to increase until 19 days (Thouvenelle et al, 1995). However, the results in this study are in line with Smith et al (1990) and Mitchell and Smith (1991) who observed that the villus surface area of the small intestinal segments is increase in the heavy breeds more than light breeds.…”