Results of Rearing Broiler Chickens Under Various Systems

Kuźniacka, Joanna; Adamski, Marek; Czarnecki, R.; Banaszak, Mirosław

doi:10.5539/jas.v6n4p19

Cited by 16 publications

(20 citation statements)

References 27 publications

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“…Maiorano et al (2017) reported an important sex effect in the final BW, carcass weight, carcass yield and pectoral muscle weight of Ross chickens slaughtered 42 d of age, higher in males than in females, but not in the carcass yield. Similar results were obtained by Kuźniacka et al (2014) in Hubbard-Flex chickens. Differently, Lopez et al (2011) found that male broilers had a higher final BW, carcass weight, and PM weight and lower carcass and breast meat yields when compared with females.…”

Section: Live Body Weight and Slaughter Performancesupporting

confidence: 88%

“…Many authors provide conflicting information concerning the effect of rearing system on dressing percentage and carcass cutting yields. Kuźniacka et al (2014) did not indicate any effect of rearing system (intensive vs. semi-intensive) on dressing percentage in Hubbard-Flex broilers. Instead, Skomorucha et al (2008) reported a higher carcass yield in 42-d-old Cobb broilers housed without outdoor access compared to birds grown with outdoor access.…”

Section: Live Body Weight and Slaughter Performancementioning

confidence: 64%

“…Rearing system is one of the key factors affecting the final body weight of animals. Various studies reported that freerange birds have lower live body weight compared to the animals kept indoors (Castellini et al 2002;Połtowicz and Doktor 2011;Kuźniacka et al 2014) this due to the fact that birds exposed to fluctuating temperatures and to an increased exercise in yards, have a higher energy requirement, and consequently a higher feed conversion rate (Tong et al 2014). Chickens from SIS group showed higher (P < 0.05) carcass weight and carcass yield compared with IS group.…”

Section: Live Body Weight and Slaughter Performancementioning

confidence: 97%

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Influence of rearing system and sex on carcass traits and meat quality of broiler chickens

Cygan-Szczegielniak

Maiorano

Janicki

et al. 2019

Journal of Applied Animal Research

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The trial was conducted in order to evaluate the effect of the rearing system and sex on live body weight, daily weight gain, carcass traits and meat quality of broiler chickens. Sixty 1-d-old Ross 308 chickens (males and females) were randomly divided, according to the sex, into 2 experimental groups based on rearing system: intensive system (IS; n = 30), birds reared till 42 d of age and semi-intensive system (SIS; n = 30), birds reared till 56 d of age. Compared with SIS group, IS group had higher (P < 0.01) daily weight gain, weight and yield of pectoral muscle (PM). Differently, SIS group had higher (P < 0.05) carcass weight and carcass yield. Males have usually a better performance than females. In comparison with IS, SIS exhibited a lower (P < 0.01) breast meat pH and higher (P < 0.01) lightness and yellowness values. Pectoral muscle from IS broiler chickens showed a greater (P < 0.01) fibre diameter and significantly higher shear force values than PM from SIS chicken. PM from IS chicken group had higher (P < 0.01) dry matter and protein content and slight fat content than PM from SIS chickens. The sex influence was not observed on physicochemical characteristics of PM in chickens reared in both system.

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Section: Live Body Weight and Slaughter Performancesupporting

confidence: 88%

Section: Live Body Weight and Slaughter Performancementioning

confidence: 64%

Section: Live Body Weight and Slaughter Performancementioning

confidence: 97%

See 1 more Smart Citation

Influence of rearing system and sex on carcass traits and meat quality of broiler chickens

Cygan-Szczegielniak

Maiorano

Janicki

et al. 2019

Journal of Applied Animal Research

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“…Carcass and meat quality in broiler poultry depends on many parameters, including genotype, sex, age, and diet. In the composition of feeds, the content of total protein affects the nutritive value of muscle tissue [1]. Most broiler geese produced in Poland are two-strain crossbreeds designated W31 (White Kołuda ® geese) and they make up over 95% of the local population.…”

Section: Introductionmentioning

confidence: 99%

The Quality of Carcass and Meat from Geese Fed Diets with or without Soybean Meal

Biesek

Kuźniacka

Banaszak

et al. 2020

Animals

Self Cite

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The aim of the study was to compare the carcass and meat quality of geese fed with soybean meal or yellow lupin. In total, 210 White Kołuda® geese were divided into 2 groups (1, soybean meal (SBM); 2, yellow lupin (YL), potato protein, and brewer’s yeast) of 5 replications (21 birds per each). After 16 weeks, 10 geese (5 females, 5 males) from each group were slaughtered. Carcass dissection was done, and major physicochemical traits were analysed (pH, water holding capacity, drip loss, color, and chemical composition of muscles). Weight of leg muscles and their proportion in the carcass were higher (p < 0.05) in SBM. Breast muscles from SBM were characterized by increased (p < 0.05) drip loss, enhanced (p < 0.05) content of protein, water, collagen and connective tissue, and lower (p < 0.05) fat content. Leg muscles from SBM were characterized by higher (p < 0.05) protein and water content but decreased (p < 0.05) salt and fat content compared to YL. The addition of YL (approx. 28%), potato protein, and brewer’s yeast had no negative effect on most meat traits and could partly replace SBM as a protein source in geese feeding. Hence, yellow lupin, potato protein and brewer’s yeast can be used in geese rearing followed by fattening with oats. Some producers do not have the option of using soybean meal. Small-scale farms use their own crop resources, so lupins can be an alternative source of protein for soybean meal.

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“…The quality and quantity of muscle tissue in the carcass of birds depend on the composition of feed used in their diet. The diet of young oat geese (commercial: White Kołuda ® geese) should contain 22.0-15.0% of crude protein and 12-11.7 MJ of metabolizable energy (ME) [3][4][5][6]. These geese are a crossbreed (W31) of two strains (W11 × W33) and characterized by a good quality of meat and fat in carcasses, which adds to the flavor of meat [1].…”

Section: Introductionmentioning

confidence: 99%

Quality and Physicochemical Traits of Carcasses and Meat from Geese Fed with Lupin-Rich Feed

Kuźniacka

Hejdysz

Banaszak

et al. 2020

Animals

Self Cite

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The aim of the study was to analyze the quality of geese meat receiving feed with soybean meal (group 1), yellow lupin (group 2), narrow-leaved lupin (group 3), or white lupin (group 4). In total, 400 male White Kołuda® geese were randomly assigned to four groups, with 10 replicates and 10 birds each, during the 77-day rearing period. After the end of the rearing period, 10 birds from each group were slaughtered and dissected. Meat quality traits were measured. Based on the production results, it can be concluded that geese use fodder with yellow and white lupin to the same degree as in the case of the control group and higher body weight gain was recorded in the first rearing period. In contrast, the use of narrow-leaved lupin in mixtures for geese worsened the feed used. Meat traits were similar in all groups, including the content of muscles and fat in the carcass (p > 0.05), excluding abdominal fat. The weight of abdominal fat and its proportion in the carcass were higher (p < 0.05) in geese from group 4. A higher (p < 0.05) pH was found in group 1. The protein and intramuscular fat content in breast muscles was highest (p < 0.05) in geese from group 4, and a higher water content was found in group 1. The protein content in leg muscles was higher in group 3, and the fat content was higher in group 4 (p < 0.05). The color and water-holding capacity of meat were comparable in all groups (p > 0.05). The analysis revealed a positive effect of replacing soybean meal with alternative protein sources, especially yellow and white lupin, on the growth performance and quality of goose meat.

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Results of Rearing Broiler Chickens Under Various Systems

Cited by 16 publications

References 27 publications

Influence of rearing system and sex on carcass traits and meat quality of broiler chickens

Influence of rearing system and sex on carcass traits and meat quality of broiler chickens

The Quality of Carcass and Meat from Geese Fed Diets with or without Soybean Meal

Quality and Physicochemical Traits of Carcasses and Meat from Geese Fed with Lupin-Rich Feed

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