The gizzard: function, influence of diet structure and effects on nutrient availability

Svihus, Birger

doi:10.1017/s0043933911000249

Cited by 369 publications

(330 citation statements)

References 106 publications

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“…It appears that the significant increase in relative gizzard weight was an adaptation mechanism to the elevated levels of dietary fibre in the LM 24 dietary treatment, as previously reported by Svihus (2011). A rapid and conspicuous enlargement in gizzard size was also observed by Zduńczyk et al (2014) in 16-week-old turkeys fed a high-fibre diet with 18% lupine seeds for 6 weeks.…”

Section: Discussionsupporting

confidence: 81%

The effect of dietary yellow lupine (L. luteus cv. Baryt) on growth performance, carcass characteristics, meat quality and selected serum parameters of turkeys

Krawczyk¹,

Mikulski²,

Przywitowski³

et al. 2015

J. Anim. Feed Sci.

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Section: Discussionsupporting

confidence: 81%

The effect of dietary yellow lupine (L. luteus cv. Baryt) on growth performance, carcass characteristics, meat quality and selected serum parameters of turkeys

Krawczyk¹,

Mikulski²,

Przywitowski³

et al. 2015

J. Anim. Feed Sci.

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“…Structural feed components have been reported to be retained in the gizzard for a longer time (Rougière & Carré 2010;Svihus 2011;Meremikwu et al 2013). The high fibre content of the test diet which must have resulted in increased digesta retention time in the gastro-intestinal tract may be a reason for the lower feed intake observed in the present experiment.…”

Section: Resultsmentioning

confidence: 59%

Growth performance and carcass yield of broiler chickens fed commercial finisher and cassava copra meal-based diets

Diarra

Sandakabatu

Perera

et al. 2014

Journal of Applied Animal Research

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A three-week experiment was conducted to investigate the utilisation of a diet based on cassava root meal and copra meal by finishing broiler chickens. A total of ninety-six 21-day-old Cobb broilers were used for the experiment. The birds were weighed and allotted to six pens containing 16 birds each. A finisher diet based on cassava and copra meal and a commercial broiler finisher diet were fed each to three randomly selected pens for a period of 21 days. Results showed poorer (P < 0.05) final body weight, daily feed intake, daily gain and feed: gain ratio of birds fed the test feed compared to those fed the control commercial feed, but feed cost of meat production (WST$/kg live weight) was reduced (P < 0.05) on the test feed. Birds on the commercial feed had higher (P < 0.05) carcass and breast meat yields, while the yields of thighs and drumsticks were not affected (P > 0.05) by the diet. There were no treatment effects (P > 0.05) on the weights of the liver, heart and caeca, but birds on the test feed recorded higher (P < 0.05) weights of the pancreas, gizzard and small intestine. Birds fed the control commercial feed deposited more (P < 0.05) fat than those fed the test feed. It was concluded that cassava copra meal-based finisher diets could be used to reduce cost of meat production and abdominal fat content and thus meat quality of broiler chickens. Further research into appropriate combinations of these ingredients for optimum growth and feed utilisation by broilers is recommended.

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“…Feed form may also play a role in the digesta pH in the stomach. Svihus (2011) reported that average values in stomach pH for broiler chickens ranged between 3 and 4 for normal pelleted diets. .1 b ± 0.09 6.4 a ± 0.10 6.5 a ± 0.14 6.6 a ± 0.03 6.6 a ± 0.06 0.003 a-b Means within the same row that do not share a common superscript are significantly different (P <0.05).…”

Section: Resultsmentioning

confidence: 99%

Intestinal morphology, digestive organ size and digesta pH of broiler chickens fed diets supplemented with or without Moringa oleifera leaf meal

Nkukwana¹,

Muchenje²,

Masika³

et al. 2015

SA J. An. Sci.

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The intestinal morphology and pH of digesta of broiler chickens at 35 days old were studied. Birds were reared on these dietary treatments (T). T1, positive control, contained 668 g salinomycin and 500 g zinc bacitracin per kg of feed. Treatments, T2, T3 and T4, contained graded levels of Moringa oleifera leaf meal (MOLM) per kg of feed, namely starter (1, 3, 5 g), grower (3, 9, 15 g) and finisher (5, 15, 25 g). T5 was a negative control (without supplementation). Birds were provided feed and water ad libitum. Birds in T3 had the highest proventriculus digesta pH, and T5 birds the lowest. Birds that were supplemented with MOLMand surprisingly those from the negative control -had significantly higher caecal digesta pH, while T1 had the highest ileal digesta pH. Duodenal villous length was longest in T2, and shortest in T4. Jejunal villous length was longest in T3 and shortest in T2 birds. T3 and T4 jejunal villi were widest, with T1 birds having the shortest. Ileal villous was longest in T2 and T5 birds, while T3 birds had the shortest. Duodenal surface area for absorption was larger in T2 and T5, and smaller in T4, while T3 had the largest ileal surface area, and T1 the smallest. The jejunal surface area was largest in T3 (53.2) and T4 (50.7), and smallest in T1 (25.0). The current results reveal a regulatory effect of MOLM on the gastrointestinal tract, which could be attributed to the coarseness of the diets, thus raising the pH and resulting in thicker digesta viscosity, which is a clear sign of a healthy gut. ______________________________________________________________________________________

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The gizzard: function, influence of diet structure and effects on nutrient availability

Cited by 369 publications

References 106 publications

The effect of dietary yellow lupine (<i>L. luteus</i> cv. Baryt) on growth performance, carcass characteristics, meat quality and selected serum parameters of turkeys

The effect of dietary yellow lupine (<i>L. luteus</i> cv. Baryt) on growth performance, carcass characteristics, meat quality and selected serum parameters of turkeys

Growth performance and carcass yield of broiler chickens fed commercial finisher and cassava copra meal-based diets

Intestinal morphology, digestive organ size and digesta pH of broiler chickens fed diets supplemented with or without <i>Moringa oleifera</i> leaf meal

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