Effects of abomasal infusion of cottonseed oil or glucose on milk production and compositions in lactating Sannen dairy goats

پژوهشهای علوم دامی ایران

Article 6, Volume 2, Issue 1 - Serial Number 3, March 2010   

Document Type: Scientific - Research Articles

DOI: 10.22067/ijasr.v2i1.3105

Authors

Moslem Bashtani^{* 1}; Abbas Ali Naserian²; Reza Valizadeh²; hasan Aghel³

¹Animal and Poultry Nutrition Department, Faculty of Agricultural and Natural Resources, University of Birjand, Birjand, Iran.

²Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

³Ferdowsi University of Mashhad

Abstract

Four ahomasal cathetered multiparous lactating Sannen goats with mean milk production of 1.6 ± 0.64 kg and 139 ± 4 days in
milk were allocated to 4 treatments in a latin square design. The goats were fed a basal diet containing 40% alfalfa hay and
60% concentrate. The basal diet was supplemented by infusion of 1) water, 2) cottonseed oil (48 g/d), 3) glucose (100 g/d)
and 4) mixture of cottonseed oil and glucose (24 and 50/d) as experimental treatments. The experiment had 2 periods
including adaptation (14 days) and Collection (7days) periods. Infusion of cottonseed oil or glucose had no significant effect
on intake or digestibilies of DM, OM, CP, NDF and ADF, of the basal diet. There were no significant differences between
total protein, casein, NPN and whey content of milk samples. Infusion of cottonseed oil or mixture of glucose and cottonseed
oil increased milk fat percentage. It was concluded that supplying more energy as oil or glucose in abomasums in mid
lactation had no effect on productive performance of dairy goats, although infusion of cottonseed oil increased milk fat
percentage. Plasml cholestral and triglyceride levels increased by infusion of cottonseed oil, but plasma glucose and BUN
remained constant.

Keywords

Cottonseed oil; Glucose; Sannen goat; Abomasal infusion