摘要
From a total of 80 fertile eggs incubated naturally by female ducks, healthy sexed ducklings (n = 64, 32 males and 32 females ducklings) were randomly selected and allotted to four dietary treatments with four replicates, in a completely randomized design in order to evaluate the effect of varying levels of palm kernel meal (PKM) on performance of ducklings. The dietary treatments comprised R0-control ration, R50-50% PKM replacement, R75-75% PKM re-placement and R100-100% PKM replacement of soyabean meal. The main results revealed that the apparent digestive coefficients of dry matter (81.12%), organic matter (83.98%) and NDF (81.10%) were higher with the ration in which 50% (R50-50% PKM replacement of soyabean meal) of soybean was replaced by palm kernel meal. The highest feed intake in male was recorded with the ration containing 75% (R75-75% PKM replacement of soyabean meal) of palm kernel. This same ration (R75-75% PKM replacement of soyabean meal) equally induced the highest live weight and weight gain in females. The experimental design and arrangement is a 2 × 4 factorial arrangement with two sexes and four levels of PKM. In males, the control ration without palm kernel meal induced the highest live weight and highest cumulative weight gain. The lowest feed conversion ratio (p < 0.05) was recorded with the control ration regardless of the sex considered. The lowest cost of feed in-take and cost of production of a kg of body weight were obtained respectively in females and males fed on control ration. With the 50% (R50-50% PKM re-placement of soyabean meal) substitution of soybean meal, the carcass yield was the highest regardless of the sex. Serum content in ALAT, ASAT, creatinine, total cholesterol and total protein were not significantly (p > 0.05) affected by the incorporation of palm kernel meal into the diet. Urea serum content tends to decrease with the increasing level of palm kernel meal in feed. In conclusion, soybean meal can advantageously be replaced by palm kernel meal at the level of 75% (R75-75% PKM replacement of soyabean meal) in Muscovy duck feed.
From a total of 80 fertile eggs incubated naturally by female ducks, healthy sexed ducklings (n = 64, 32 males and 32 females ducklings) were randomly selected and allotted to four dietary treatments with four replicates, in a completely randomized design in order to evaluate the effect of varying levels of palm kernel meal (PKM) on performance of ducklings. The dietary treatments comprised R0-control ration, R50-50% PKM replacement, R75-75% PKM re-placement and R100-100% PKM replacement of soyabean meal. The main results revealed that the apparent digestive coefficients of dry matter (81.12%), organic matter (83.98%) and NDF (81.10%) were higher with the ration in which 50% (R50-50% PKM replacement of soyabean meal) of soybean was replaced by palm kernel meal. The highest feed intake in male was recorded with the ration containing 75% (R75-75% PKM replacement of soyabean meal) of palm kernel. This same ration (R75-75% PKM replacement of soyabean meal) equally induced the highest live weight and weight gain in females. The experimental design and arrangement is a 2 × 4 factorial arrangement with two sexes and four levels of PKM. In males, the control ration without palm kernel meal induced the highest live weight and highest cumulative weight gain. The lowest feed conversion ratio (p < 0.05) was recorded with the control ration regardless of the sex considered. The lowest cost of feed in-take and cost of production of a kg of body weight were obtained respectively in females and males fed on control ration. With the 50% (R50-50% PKM re-placement of soyabean meal) substitution of soybean meal, the carcass yield was the highest regardless of the sex. Serum content in ALAT, ASAT, creatinine, total cholesterol and total protein were not significantly (p > 0.05) affected by the incorporation of palm kernel meal into the diet. Urea serum content tends to decrease with the increasing level of palm kernel meal in feed. In conclusion, soybean meal can advantageously be replaced by palm kernel meal at the level of 75% (R75-75% PKM replacement of soyabean meal) in Muscovy duck feed.
作者
Ruben Ngouana Tadjong
Kana Jean Raphaël
Yemdji Mane Divine Doriane
Kamkade Yves
Edie Nounamo Longston Wilfried
Teguia Alexis
Ruben Ngouana Tadjong;Kana Jean Raphaël;Yemdji Mane Divine Doriane;Kamkade Yves;Edie Nounamo Longston Wilfried;Teguia Alexis(Institute of Fisheries and Aquatic Science of Yabassi, Aquaculture Department, Laboratory of Aquaculture and Demography of Fisher-ies Resources, University of Douala, Douala, Cameroon;Faculty of Agronomy and Agricultural Sciences, Department of Animal Science, Laboratory of Animal Nutrition, University of Dschang, Dschang, Cameroon)
