Prediction of Body Weight and other Linear Body Measurement of Two Commercial Layer Strain Chickens

Ojedapo, L. O.; Amao, S. R.; Ameen, S. A.; Adedeji, T. A.; Ogundipe, R. I.; Ige, A. O.

doi:10.3923/ajas.2012.13.22

Cited by 25 publications

(18 citation statements)

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“…[16,17] who reported that the age is a major determinant of growth and physiological development. The body weight and linear measurements obtained in this study were however lower than values reported by other authors [18][19][20][21].This is not unexpected in morphometric traits assessments of birds belonging to different populations [22].…”

Section: Discussionmentioning

confidence: 99%

Relationship between Body Weight and Linear Body Measurements in Japanese Quail (<i>Coturnix coturnix japonica</i>)

et al. 2013

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A total of 108 two-weeks-old Japanese quail chicks were used to study the relationship between body weight and linear measurements and to predict body weight from linear measurements of body length (BL), body girth (BG), wing length (WL), shank length (SL), shank diameter (SD) and drum stick (DS).The results showed that the mean quail birds' body weights were 35.23g and 143.78g, at 2 nd and 8 th weeks, respectively. Body weight gain was increased between 2 and 6 weeks of age and thereafter decreased with advancing age. Female birds were significantly (P< 0.05) heavier than those of male counterpart at 6 th and 8 th weeks of age. Significantly positive correlations (P<0.01) were obtained between body weight and body measurements at 2 nd , 4 th and 8 th weeks. The best correlation was obtained between body weight and body girth at the 2 nd week of age (0.70). The estimates of coefficient of determination and predictive equations show that body weight in Japanese quail is linearly related to body measurements especially with body girth and body length. The study shows that it is possible for breeders to use BG and BL as criteria for assessment and early selection of Japanese quail for body weight.

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Section: Discussionmentioning

confidence: 99%

Relationship between Body Weight and Linear Body Measurements in Japanese Quail (<i>Coturnix coturnix japonica</i>)

et al. 2013

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“…Body length, BMI and tarsus measurements are used to evaluate body composition and size and to predict future performance of broilers (Mendes et al, 2007;Van Roovert-Reijrink, 2013), pullets (Itza et al, 2011;Guzmán et al, 2015b) and laying hens (Ojedapo et al, 2012;Guzmán et al, 2016). Body length, BMI and length and diameter of the tarsus were not affected by dietary treatment, indicating that neither the characteristics of the rearing phase diets nor the energy content of the laying phase diets affected body size of the mature hens.…”

Section: Digestive Traits and Body Measurementsmentioning

confidence: 99%

“…Body measurements, such as body length, body mass index (BMI; g BW/body length 2 ) and tarsus length and diameter, are useful criteria to predict body size and future production of laying hens (Ojedapo et al, 2012;Guzmán et al, 2016). However, the information available on the effects of the characteristics of the rearing and laying hen diets on these variables are limited.…”

Section: Introductionmentioning

confidence: 99%

Influence of feed form and energy concentration of the rearing phase diets on productivity, digestive tract development and body measurements of brown-egg laying hens fed diets varying in energy concentration from 17 to 46 wk of age

Saldaña

Gewehr

Guzmán

et al. 2016

Animal Feed Science and Technology

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a b s t r a c tThe influence of feed form and energy content of the rearing phase diets on hen productivity, gastrointestinal tract (GIT) traits and body measurements was studied in brown-egg laying hens fed diets differing in energy concentration from 17 to 46 wk of age. The experiment was completely randomized with 12 treatments arranged as a (2 × 3) × 2 factorial with two feed forms (mash vs. crumbles) and three AME n concentrations of the rearing phase diets (low, medium and high) and two AME n concentrations (11.10 vs. 11.52 MJ/kg) of the laying phase diets. The AME n of the rearing phase diets differed in 0.42 MJ/kg in all three periods (1-5 wk, 5-10 wk and 10-17 wk of age). Hen productivity was determined from 17 to 46 wk and GIT and body traits were measured at 46 wk of age. The characteristics of the rearing phase diets did not affect any of the production, GIT traits or body measurements studied during the laying phase, except body weight gain (BWG) from 17 to 46 wk of age that was higher (P < 0.01) in hens that were fed mash during the rearing phase than in hens that were fed crumbles. An increase in the energy content of the laying phase diet from 11.10 to 11.52 MJ AME n /kg reduced feed intake (P < 0.001) and improved feed conversion ratio (P < 0.001) from 17 to 46 wk and reduced gizzard contents (P < 0.01) at 46 wk of age but did not affect any of the other production trait studied. The characteristics of the rearing and laying hen diets did not affect any of the GIT traits or body measurements at 46 wk of age. Body weight of the hens was positively (P < 0.001) related with body length, body mass index, tarsus length and tarsus diameter at this age. The data indicate that neither feed form nor energy concentration of the rearing phase diets affected subsequent hen performance. An increase in the AME n content of the layer diet from 11.10 to 11.52 MJ/kg decreased feed intake and improved feed conversion ratio but did not affect hen production or egg quality.

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“…Body width, body depth, shank length, and shank circumference were measured using the method of Chambers and Fortin (1984). Body length and keel length were determined according to the method of Ojedapo et al (2012). Comb length (maximum length of comb), height (from the top of comb to head), Wattle width (maximum width of the wattle), wattle length (distance between the top and bottom of the wattle), comb and wattle thickness (maximum thickness of the comb and wattle), comb and wattle weight and pelvis width (the distance between the two hip bones) were also measured.…”

Section: Measurement and Samplingmentioning

confidence: 99%

Effects of caponization on growth, carcass, and meat characteristics and the mRNA expression of genes related to lipid metabolism in roosters of a Chinese indigenous breed

Guo¹,

Nan²,

Shi³

et al. 2015

Czech J. Anim. Sci.

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ABSTRACT:The effects of caponization on growth, body measurements, carcass traits, meat quality, and the mRNA expression of three genes related to lipid metabolism in Guang-xi Yellow roosters were evaluated. Thirty roosters (25 days) of similar weight were randomly divided equally into the experimental (capons, n = 15) and control (intact males, n = 15) groups. Caponization was conducted at 28 days of age, and birds were slaughtered at 140 days of age. Capons were significantly heavier (P < 0.05) than intact males and also had longer keel length and chest depth (P < 0.05 or P < 0.01). There were no significant differences in the percentage of eviscerated weight with giblet and eviscerated weight between the two groups. However, caponization increased breast muscle yield and decreased leg muscle yield (P < 0.05). The capons exhibited higher lightness values for thigh meat and lower redness values for both breast and thigh meat. Moreover, caponization up-regulated the fatty acid synthase (FAS) mRNA level in the liver, indicating enhanced hepatic lipogenesis, and also up-regulated the lipoprotein lipase (LPL) and peroxisome proliferator-activated receptor γ (PPARγ) mRNA levels in abdominal adipose tissue, which indicates increased lipid deposition and adipocyte differentiation. Therefore, caponization is associated with heavier body weight, higher breast meat yield, and higher abdominal fat percentage in Guang-xi Yellow roosters; the higher abdominal fat percentage may be associated with the increase in the mRNA expression of FAS, LPL, and PPARγ.

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Prediction of Body Weight and other Linear Body Measurement of Two Commercial Layer Strain Chickens

Cited by 25 publications

References 1 publication

Relationship between Body Weight and Linear Body Measurements in Japanese Quail (<i>Coturnix coturnix japonica</i>)

Relationship between Body Weight and Linear Body Measurements in Japanese Quail (<i>Coturnix coturnix japonica</i>)

Influence of feed form and energy concentration of the rearing phase diets on productivity, digestive tract development and body measurements of brown-egg laying hens fed diets varying in energy concentration from 17 to 46 wk of age

Effects of caponization on growth, carcass, and meat characteristics and the mRNA expression of genes related to lipid metabolism in roosters of a Chinese indigenous breed

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