Effects of Different Levels of Iron in Breeding Pigeon Diets on Body Weight, Slaughter Performance, Meat Quality and Blood Indexes of Squabs

ZHAO Dongdong; LI Xing; WANG Zheng; SHI Zhaoguo; QIN Shizhen; SHAO Yuxin; SUN Xiaoshan; ZHANG Xiaoyue

doi:10.3969/j.issn.1006-267x.2022.06.025

2022 , Vol. 34 >Issue 6: 3635 - 3644

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.06.025

RESEARCHPAPER

Effects of Different Levels of Iron in Breeding Pigeon Diets on Body Weight, Slaughter Performance, Meat Quality and Blood Indexes of Squabs

ZHAO Dongdong ,
LI Xing ,
WANG Zheng ,
SHI Zhaoguo ,
QIN Shizhen ,
SHAO Yuxin ,
SUN Xiaoshan ,
ZHANG Xiaoyue

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1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
2. Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China

Received date: 2021-11-08

Online published: 2022-06-14

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Abstract

The purpose of this experiment was to explore the effects of different iron (FeSO₄·7H₂O) levels in the breeding pigeon diets on body weight, slaughter performance, meat quality, iron content, hemoglobin concentration and hematocrit of squabs, so as to provide a scientific basis for the rational addition of dietary iron in the production of meat pigeons. A total of 120 pairs of silver feather king parental breeding pigeons with similar health, average weight and egg laying performance were randomly divided into 5 groups, with 8 repetitions in each group, 3 pairs of breeding pigeons in each repetition, and 2 squabs were fed to each pair of breeding pigeons. The five groups of breeding pigeons were fed a basic diet without iron and experimental diets with 75, 150, 300 and 600 mg/kg iron, respectively. The diet was fed to breeding pigeons in the form of granular feed. The experimental period was 46 days, including 18 days of incubation and 28 days of lactation. The results showed as follows:1) average daily gain of squabs at 1 to 28 days of age in 150 mg/kg iron group was significantly higher than that in 75 and 300 mg/kg iron groups (P<0.05), and increased 4.4% and 6.2% compared with the control group and 600 mg/kg iron group, respectively. The average daily feed intake of squabs at 1 to 28 days of age in 75 mg/kg iron group was significantly lower than that in control group, 150 and 600 mg/kg iron groups (P<0.05), and was 6.2% lower than that in 300 mg/kg iron group. 2) Breast muscle percentage of squabs at 28 days of age in 75 mg/kg iron group was significantly decreased compared with other groups (P<0.05), there were no significant differences in slaughter rate, half-eviscerated rate, abdominal fat rate and eviscerated rate of 28-day-old squabs among all groups (P>0.05). 3) The breast muscle redness value in 150 mg/kg iron group was the highest, and was significantly higher than that in 75 and 600 mg/kg iron groups (P<0.05), but there was no significant difference compared with control group (P>0.05). There were no significant differences in pectoral muscle brightness, yellowness value, shear force, pH and drip loss among all groups (P>0.05). 4) Dietary iron level had no significant effects on hemoglobin, hemoglobin concentration and hematocrit in blood indexes of squabs and breeding pigeons (P>0.05). It can be seen that the daily gain and breast muscle color redness of squabs can reach a higher level by adding 150 mg/kg iron to the basic diet or the basic diet.

Key words： squabs; iron; growth performance; slaughter performance; meat quality; hemoglobin concentration; hematocrit

Cite this article

ZHAO Dongdong , LI Xing , WANG Zheng , SHI Zhaoguo , QIN Shizhen , SHAO Yuxin , SUN Xiaoshan , ZHANG Xiaoyue . Effects of Different Levels of Iron in Breeding Pigeon Diets on Body Weight, Slaughter Performance, Meat Quality and Blood Indexes of Squabs[J]. Chinese Journal of Animal Nutrition, 2022 , 34(6) : 3635 -3644 . DOI: 10.3969/j.issn.1006-267x.2022.06.025

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