Influence of Overfeeding on Productive Performance Traits, Foie Gras Production, Blood Parameters, Internal Organs, Carcass Traits, and Mortality Rate in Two Breeds of Ducks
نویسندگان
چکیده
A total of 60 male mule ducks and 60 male Muscovy ducks were allotted into three groups (n = 20) to estimate the effects of overfeeding (two and four meals) versus ad libitum feeding on productive performance traits, foie gras production, internal organs, and blood parameters. The results show that force-feeding four meals significantly increased (P < 0.01) body weight, weight gain, and gain percentage compared to force-feeding two meals. Both force-feeding regimes (two or four meals) induced significantly higher body weight, weight gain, gain percentage, and absolute carcass weight than ad libitum feeding; however, carcass percentage was significantly higher in ad libitum feeding. Mule ducks had significantly higher weight gain and weight gain percentages than Muscovy ducks. Feed consumption per kilogram of foie gras and per kilogram weight gain was lower for the four-meal than for the two-meal forced feeding regime. Force-feeding four meals induced significantly higher liver weight and percentage (488.96 ± 25.78g, 7.82 ± 0.40%) than force-feeding two meals (381.98 ± 13.60g, 6.42 ± 0.21%). Moreover, feed conversion was significantly higher under forced feeding than under ad libitum feeding (77.65 ± 3.41g, 1.72 ± 0.05%; P < 0.01). Forced feeding (two or four meals) increased all organ weights (intestine, proventriculus, heart, spleen, and pancreas) over ad libitum feeding weights, except for the gizzard; however intestinal and abdominal fat values were higher for four-meal forced feeding than for two-meal forced feeding. Overfeeding did not change blood parameters significantly compared to ad libitum feeding; however, four-meal forced feeding improved the quality of foie gras since it significantly increased the percentage of grade A foie gras (62.5%) at the expense of grades B (33.33%) and C (4.17%) compared with the two-meal forced feeding. The mortality percentage among Muscovy ducks during the forced feeding period was 22.5%, compared to 0% in mule ducks. Liver weight was highly significantly correlated with life weight after overfeeding and certain blood plasma traits. Keywords—Foie gras, overfeeding, ducks, productive performance.
منابع مشابه
Effects of Chicory Powder and Butyric Acid Combination on Performance, Carcass Traits and some Blood Parameters in Broiler Chickens
The objective of this study was to determine the effect of different levels of chicory root and stem powder (CRSP) and butyric acid (BA) combination on the performance, carcass traits, relative weight of internal organs and some blood parameters in broiler chickens. Two hundred and forty one-day-old broilers (Ross 308) were used in a completely randomized design with four treatments with six re...
متن کاملScrutinizing of a Liquid Prebiotic on Growth Performance and Internal Organs of Japanese Quail
An experiment has been conducted to evaluate the effects of a liquid prebiotic (LP) on the carcass, digestive tract, and productive traits of Japanese quail. Eighty 7-day-old Japanese quails were randomly divided into 2 treatments. Each treatment consisted of 4 replicates (pens) of 10 birds each. The first treatment (control) contained a standard recommended diet with no added prebiotic. The se...
متن کاملInfluence of Artichoke (Cynara scolymus) Leaf Powder on Growth Performance, Carcass Traits and Blood Parameters in Broiler Chickens
The objective of this study was to investigate the effects of dietary artichoke supplementation on performance, carcass traits and some blood parameters of broiler chickens. A total of 300, one day old broiler chicks (Ross-308) were randomly allocated to 1 of 4 dietary treatments including: basal diet (control), basal diet supplemented with 1.5 or 3 percent of Artichoke powder and also with 300...
متن کاملThe Effect of Different Levels of Tanacetum balasmita Medicinal Plant Powder and Extract on Performance, Carcass Traits and Blood Parameters of Broiler Chicks
This experiment was conducted to evaluate the effects of different levels of dried aerial parts powder and extract of Tanacetum balasmita (TB) medicinal plant on performance, carcass traits and blood parameters of broilers. Two hundred eighty Ross-308 broilers from 10 to 42 days of age were used in a completely randomized design in 5 treatments and 4 replicates (14 birds per replicate). The tre...
متن کاملEffects of Different Levels of Dried Lemon (Citrus aurantifulia) Pulpon Performance, Carcass Traits, Blood Biochemical and Immunity Parameters of Broilers
This experiment was conducted to evaluate the effects of different levels of dried lemon pulp (DLP) on performance, carcass traits, blood biochemical and immunity parameters of broilers. In this experiment 240 of broilers (Ross-308) were used in a completely randomized design with 4 treatments and 3 replicates (with 20 birds in each replicate) from 1 to 42 days. Experimental diets included: 1) ...
متن کامل