Effects of Nutritional Restriction during Laying Period of Fat and Lean Line Broiler Breeder Hens on Meat Quality Traits of Offspring

Abstract

The offspring meat quality of hens undergoing a 25% dietary restriction treatment during the laying period were evaluated in fat and lean line breeder. A total of 768 female birds (384/line) were randomly assigned to four groups (12 replicates/group, 16 birds/replicates). Maternal feed restriction (MFR) and normal started at 27 weeks of age. Offspring broilers were fed ad libitum. The offspring meat quality traits and muscle fiber morphology in different periods were measured. At birth, significant interactions were found on breast muscle fiber morphology (p < 0.05). At 28 days, MFR decreased breast water content and increased thigh crude fat content, and significant interactions were observed on breast crude fat and protein contents (p < 0.05). At 56 days, MFR affected morphology of peroneus longus muscle tissue, and significant interactions were found on thigh redness at 48 h and amino acid contents in breast and thigh muscle (p < 0.05). Overall, MRF may lead to offspring birth sarcopenia. Such offspring grow more easily to deposit fat in a nutritious environment, but they will self-regulate adverse symptoms during growth and development. The two lines respond differently to maternal nutritional disturbance due to different nutritional requirements and metabolic patterns.

Maternal nutrition altered embryonic MYOD1, MYF5, and MYF6 gene expression in genetically fat and lean lines of chickens

“…The satellite cells remain associated with the developing muscle fibers and play prominent roles in adult muscle regeneration and growth [ 37 ]. In another study focused on the effect of maternal nutrition on meat quality of broilers, compensatory muscle growth was found in the offspring of restricted feeding treatment [ 38 ]. During the last few days of embryonic development, muscle fibers begin to differentiate into different fiber types [ 39 ].…”

Influence of microbiota inoculum as a substitute for antibiotic growth promoter during the initial laying phase on productivity performance, egg quality, and the morphology of reproductive organs in laying hens

“…In addition, 20 weeks before puberty, the development of the reproductive system reaches its pinnacle, and throughout the production era, organ growth is mostly constant. Lack of the nutrients that layer hens need may harm and damage the reproductive system, reducing egg production [ 13 ]. According to previous studies, probiotic dietary supplementation enhances egg production and improves chicken performance, feed conversion efficiency, and eggshell quality [ 14 , 15 ].…”