Optimal dietary energy and protein levels for breeding pigeons in the winter "2 + 3" lactation pattern

Peng, Jie; Huang, Weiying; Liang, Yayan; Zhang, Wei; Zhang, Yanlin; Yang, Menglin; Zheng, Shiqi; Lv, Yantao; Gou, Zhongyong; Cheng, Chuanshang; Gao, Hongyan; Wang, Wei; Peng, Jian; Huang, Yanhua

doi:10.1016/j.psj.2023.102964

Cited by 6 publications

(8 citation statements)

References 54 publications

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“…Additionally, it should be noted that there is no difference in final body weight of squabs between the 18% CP diet group and 17% CP diet group. Like, Peng et al (2023a) found that body weight of squabs was positively correlated with dietary CP levels, and 18% CP increased body weight of squabs by 3.16% compared with the 15% CP diet group, which was similar to that of the 16.5% CP diet group. In this study, we also observed that dietary CP levels quadratically reduced kidney relative weight of squabs, indicating that the high CP diet may hinder kidney development of squabs.…”

Section: Discussionsupporting

confidence: 55%

“…Given the special feeding pattern of squab pigeons, precise nutrition provision to the breeding pigeons is an effective method to promote the growth, development and health status of squabs. Although many results about pigeons proteins requirements have been reported ( Waldie et al, 1991 ; Peng et al, 2023a ; b ), any standard of pigeons proteins requirements has not yet officially released. The previous studies mostly focused on exploring dietary crude proteins ( CP ) levels on the reproductive performance of breeding pigeons, the growth and meat quality of squabs.…”

Section: Introductionmentioning

confidence: 99%

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Intestinal health of squab pigeons responded to parental dietary protein levels during breeding period

Cheng,

Niu,

et al. 2024

Poultry Science

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Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Intestinal health of squab pigeons responded to parental dietary protein levels during breeding period

Cheng,

Niu,

et al. 2024

Poultry Science

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“…In the research of meat quality traits, there is a comparative lack of studies on the inter-species differences among different meat-type pigeon breeds and the screening of functional genes with potential impacts on meat quality traits. The majority of the currently available literature focuses on studies of nutritional requirements [36,37], feeding strategies [38,39], and the effects of dietary components on the growth performance of meat-type pigeons [40][41][42]. In the current study, we analyzed the IMF content, FA composition, and AA composition of the breast muscles from 4-week-old squabs of two meat-type pigeon breeds.…”

Section: Discussionmentioning

confidence: 99%

The Identification of Functional Genes Affecting Fat-Related Meat Traits in Meat-Type Pigeons Using Double-Digest Restriction-Associated DNA Sequencing and Molecular Docking Analysis

Yuan,

Tian,

Meng

et al. 2023

Animals

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The Chinese indigenous Shiqi (SQ) pigeon and the imported White King (WK) pigeon are two meat-type pigeon breeds of economical and nutritional importance in China. They displayed significant differences in such meat quality traits as intramuscular fat (IMF) content and fatty acid (FA) compositions in the breast muscles. In this study, we aimed to screen candidate genes that could affect fat-related meat quality traits in meat-type pigeons. We investigated the polymorphic variations at the genomic level using double-digest restriction-associated DNA (ddRAD) sequencing in 12 squabs of SQ and WK pigeons that exhibited significant inter-breed differences in IMF content as well as FA and amino acid compositions in the breast muscles, and screened candidate genes influencing fat-related traits in squabs through gene ontology analysis and pathway analysis. By focusing on 6019 SNPs, which were located in genes with correct annotations and had the potential to induce changes in the encoded proteins, we identified 19 genes (ACAA1, ACAA2, ACACB, ACADS, ACAT1, ACOX3, ACSBG1, ACSBG2, ACSL1, ACSL4, ELOVL6, FADS1, FADS2, HACD4, HADH, HADHA, HADHB, MECR, OXSM) as candidate genes that could affect fat-related traits in squabs. They were significantly enriched in the pathways of FA metabolism, degradation, and biosynthesis (p < 0.05). Results from molecular docking analysis further revealed that three non-synonymous amino acid alterations, ACAA1(S357N), ACAA2(T234I), and ACACB(H1418N), could alter the non-bonding interactions between the enzymatic proteins and their substrates. Since ACAA1, ACAA2, and ACACB encode rate-limiting enzymes in FA synthesis and degradation, alterations in the enzyme–substrate binding affinity may subsequently affect the catalytic efficiency of enzymes. We suggested that SNPs in these three genes were worthy of further investigation into their roles in explaining the disparities in fat-related traits in squabs.

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“…The nutrient levels in the diet are closely related to the reproduction performance of breeding pigeons. For instance, the laying rate of pigeons was significantly enhanced by the appropriate levels of dietary lysine, calcium, zinc and crude protein [ 21 , 22 , 23 , 24 ].…”

Section: Artificial Breeding Of Pigeonsmentioning

confidence: 99%

“…To increase productivity, newborn squabs are adopted by one pair of breeding pigeons in a “2+3” or “2+4” pattern under artificial farming (3 to 4 squabs nursed by a pair of breeding pigeons) [ 24 ]. The body weight and organ development of posthatch squabs were optimal under the feeding system of CWC (whole grains of maize and wheat plus concentrate feed) [ 25 ].…”

Section: Artificial Breeding Of Pigeonsmentioning

confidence: 99%

Pigeon during the Breeding Cycle: Behaviors, Composition and Formation of Crop Milk, and Physiological Adaptation

Wang,

Zhu,

Xie

et al. 2023

Life

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Pigeon is an important economic poultry species in many countries. As an altricial bird, its growth and development are largely reliant on pigeon milk produced by the crop tissue in the first week. During the breeding cycle, pigeons undergo a series of behavioral changes. Pigeon milk is generally characterized by having high concentrations of proteins and lipids, and a complicated regulatory network is involved in the milk formation. Hormones, especially prolactin, could promote the proliferation of crop epidermal cells and nutrient accumulation. The expression of target genes associated with these important biological processes in the crop epidermis is affected by non-coding RNAs. Meanwhile, signaling pathways, such as target of rapamycin (TOR), Janus kinase/signal transducer and activator of transcription proteins (JAK/STAT), protein kinase B (Akt), etc., influence the production of crop milk by either enhancing protein synthesis in crop cells or inducing apoptosis of crop epidermal cells. In order to adapt to the different breeding periods, pigeons are physiologically changed in their intestinal morphology and function and liver metabolism. This paper reviews the behaviors and physiological adaptations of pigeon during the breeding cycle, the composition of pigeon crop milk, and the mechanism of its formation, which is important for a better understanding of the physiology of altricial birds and the development of artificial crop milk.

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Optimal dietary energy and protein levels for breeding pigeons in the winter "2 + 3" lactation pattern

Cited by 6 publications

References 54 publications

Intestinal health of squab pigeons responded to parental dietary protein levels during breeding period

Intestinal health of squab pigeons responded to parental dietary protein levels during breeding period

The Identification of Functional Genes Affecting Fat-Related Meat Traits in Meat-Type Pigeons Using Double-Digest Restriction-Associated DNA Sequencing and Molecular Docking Analysis

Pigeon during the Breeding Cycle: Behaviors, Composition and Formation of Crop Milk, and Physiological Adaptation

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