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Articles by N.A. Sebola
Total Records ( 2 ) for N.A. Sebola
  N.A. Sebola , J.W. Ng`ambi , D. Norris and C.A. Mbajiorgu
  Two experiments were conducted to evaluate the effects of Garcinia cambogia leaf meal supplementation levels at finisher stage on productivity and juiciness of male Ross 308 broiler chickens. The design of the experiments was a completely randomised design. The first experiment examined the effect of level of Garcinia cambogia leaf meal supplementation at finisher stage (29 to 42 days of age) on productivity and carcass characteristics of male Ross 308 broiler chickens. Level of Garcinia cambogia leaf supplementation had no effect (p>0.05) on feed intake, growth rate, feed conversion ratio, live weight, blood glucose, blood urea and carcass characteristics of male broiler chickens. However, daily supplementation with 300 mg of Garcinia cambogia leaf meal per kg DM feed reduced (p<0.05) fat pad weight by 18.75% in broiler chickens. This could not be explained in terms of differences in feed intake, digestibility, or growth rate. The second experiment examined the effect of Garcinia cambogia leaf meal supplementation interval on juiciness of Ross 308 broiler chickens. Garcinia cambogia leaf meal supplementation interval had no effect (p>0.05) on meat flavour of male Ross 308 broiler chicken meat. However, daily supplementation with 300 mg of Garcinia cambogia leaf meal reduced (p<0.05) juiciness of male Ross 308 broiler chicken meat by 40%.
  N.A. Sebola , V. Mlambo , H.K. Mokoboki and V. Muchenje
  Continuous supplementation of chicken diets with plant-based alternative feed resources such as Moringa oleifera has the potential to modify the bird’s anatomy and physiology. A 90 days feeding trial was conducted to determine the effect of M. oleifera leaf meal supplementation on weight of internal organs, haematological parameters and serum biochemical indicesinthree chicken strains that are normally reared extensively in South Africa. Moringa leaves were harvested by hand, air-dried and milled into M. Oleifera Leaf Meal (MOLM). The leaf meal was chemically analysed and used to dilute a commercial broiler finisher diet at 0 (MOLM0), 25 (MOLM25), 50 (MOLM50) and 100 (MOLM100) g kg–1 DM, producing four isoenergetic and isonitrogenousdietary treatments. The 216 Potchefstroom Koekoek (PK), Ovambo (OV) and Black Australorp (BA) chickens were raised on a commercial starter mash for 3 weeks. On the 4th week, experimental diets were offered until 13 weeks of age. At 13 weeks of age blood samples were taken from 6 chickens (3 males and 3 females) per treatment and used for biochemical and haematological analysis. Higher inclusion levels of MOLM resulted in longer small intestines and larger gizzards in both male and female chickens. Male BA chickens on MOLM0 diet had the least Red Blood Cell (RBC) and haematocrit counts compared to other diets. When offered MOLM50, female OV chicken strain had lower Aspartate Transaminase (AST) and alkaline phosphate (ALKP) (156.9 U L–1) compared to BA and PK chicken strains. Incremental levels of MOLM resulted in higher Total Protein (TP) in female chickens. In male chickens low levels of Alanine Transaminase (ALT) were observed when offered MOLM50 (10.0 U L–1) and MOLM100 (11.0 U L–1). It was concluded that inclusion of MOLM at levels up to 10 g kg–1 had no adverse effect on the health and nutritional status of the three chicken strains.
 
 
 
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