Effect of Whole Cottonseed Feeding on Feedlot Performance and Morphological Characteristics of Small Intestine in Chaal Male Lambs

AFZALZADE, Ahmad; SHARIFI, Seyyed Davood; ABSALAN, Mohsen; GHANDI, Davood; KHADEM, Ali Akbar

doi:10.22059/ijas.2013.32156

Effect of Whole Cottonseed Feeding on Feedlot Performance and Morphological Characteristics of Small Intestine in Chaal Male Lambs

Document Type : Research Paper

Authors

Ahmad AFZALZADE ¹

Seyyed davood SHARIFI ²

Mohsen ABSALAN ³

Davood GHANDI ³

Ali akbar KHADEM ²

¹ Associate Professors Department of Animal and Poultry Sciences, College of Aburaihan, University of Tehran, Tehran, Iran

² Associate Professors Department of Animal and Poultry Sciences, College of Aburaihan, University of Tehran, Tehran, Iran.

³ Former Graduate Student, Department of Animal and Poultry Sciences, College of Aburaihan, University of Tehran, Tehran, Iran

10.22059/ijas.2013.32156

Abstract

The effects of different levels of Whole Cottonseed (WCS) on feedlot performance and on the
morphology of small intestine, in 20 Chaal male lambs were studied for a duration of 90 days. A
completely randomized design of four diets containing 0, 4, 8 and 16 percent WCS was employed.
Number and dimensions of different types of villi and depths of crypt gland were evaluated. The
metabolisable energy and protein contents of rations were chosen as equal. Different levels of WCS in
diet exerted no significant effect on body weight gain and feed conversion ratio, but the sheep
consumed diets containing 4 % WCS more than they did the other diets (p<0.01).. The effect of diet
was significant only on the number of leaf shape villi (p<0.01). The difference among the numbers of
all types of villi in different parts of intestine samplings (duodenum, jejunum, ileum), was also
significant. Villus dimensions and depth of crypt gland were affected by diet and sampling sites. It was
finally shown that, WCS can increase villus heigh: crypt depth ratio and can be included in the
fattening ration of a male lamb’s diet to an extent of 16 percent.

Keywords

Chaal lambs

cottonseed

Feedlot performance

Small intestine morphology