scholarly journals Effect of body weight and energy intake on body composition analysis of broiler breeder hens

2019 ◽  
Vol 98 (2) ◽  
pp. 796-802 ◽  
Author(s):  
C. Salas ◽  
R.D. Ekmay ◽  
J. England ◽  
S. Cerrate ◽  
C.N. Coon
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Energy Intake ◽  
Composition Analysis ◽  
Broiler Breeder ◽  
Body Composition Analysis ◽  
Breeder Hens ◽  
Broiler Breeder Hens

Reproductive performance, growth rate and body composition of broiler breeder hens differing in body weight at 21 weeks of age

1991 ◽  
Vol 71 (4) ◽  
pp. 1223-1231 ◽  
Author(s):  
F. E. Robinson ◽  
N. A. Robinson
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Reproductive Performance ◽  
High Weight ◽  
Embryo Viability ◽  
Broiler Breeder ◽  
Breeder Hens ◽  
Low Weight ◽  
Broiler Breeder Hens ◽  
Medium Weight

The effects of variation in body weight at 21 weeks of age on subsequent growth rate, body composition and reproductive performance were studied in broiler breeder hens from 22 to 62 weeks of age. Pullets were sorted into three groups on the basis of body weight (low, medium and high) at 21 weeks of age. Pullets of the low-weight group contained a greater percentage of carcass water and less carcass fat at 22 weeks of age than did the medium- and high-weight pullets, and less carcass protein than the high-weight birds. The relative difference in body weight between the three groups of hens was maintained to 62 weeks of age, the high-weight hens being heavier than the low- and medium-weight hens at the end of the study. The low-weight birds began to lay later than the medium- and high-weight pullets. The low- and medium-weight birds were lighter in weight compared to the high-weight pullets at sexual maturity. Total egg output was lower in the low-weight hens than in the medium- and high-weight hens. No difference was seen in sequence and intersequence pause parameters or in fertility, embryo viability or embryo production between the three groups of hens. On a percentage basis, there were no differences in body composition between groups of birds at 62 weeks of age. It was concluded that pullets which are underweight at 21 weeks of age exhibit a poorer production record than do pen-mates which are of normal or greater than normal body weight. Key words: Broiler breeder hens, egg production, body weight, body composition, sequence length, fertility, embryo viability

scholarly journals Dynamics of nutrient utilization, heat production, and body composition in broiler breeder hens during egg production

2018 ◽  
Vol 97 (8) ◽  
pp. 2845-2853 ◽  
Author(s):  
Justina V. Caldas ◽  
Katie Hilton ◽  
Nirun Boonsinchai ◽  
Judith A. England ◽  
Andy Mauromoustakos ◽  
...  
Keyword(s):  
Body Composition ◽  
Heat Production ◽  
Egg Production ◽  
Nutrient Utilization ◽  
Broiler Breeder ◽  
Breeder Hens ◽  
Broiler Breeder Hens

scholarly journals The Influence of Stocking Density on Body Weight, Egg Weight, and Feed Intake of Adult Broiler Breeder Hens

2007 ◽  
Vol 86 (8) ◽  
pp. 1615-1619 ◽  
Author(s):  
B.J. Mtileni ◽  
K.A. Nephawe ◽  
A.E. Nesamvuni ◽  
K. Benyi
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Stocking Density ◽  
Egg Weight ◽  
Broiler Breeder ◽  
Breeder Hens ◽  
Broiler Breeder Hens

INFLUENCE OF ENERGY INTAKE ON DEVELOPMENT OF BROILER BREEDER PULLETS

1990 ◽  
Vol 70 (1) ◽  
pp. 259-266 ◽  
Author(s):  
C. D. BENNETT ◽  
S. LEESON
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Luteinizing Hormone ◽  
Energy Intake ◽  
High Energy ◽  
The Body ◽  
Fat Free Mass ◽  
Lower Percentage ◽  
Broiler Breeder ◽  
Hormone Levels

One hundred and two broiler breeder pullets were reared from 10 wk of age on one of three diets formulated to contain 15% CP and provide 10.67, 11.72, or 12.89 MJ ME kg−1. All birds received the same daily feed allotment. At 20 wk of age, the pullets were light-stimulated and nine birds per treatment were slaughtered for carcass analysis. The remaining birds were slaughtered for carcass analysis at the time that they laid their first egg. Twelve birds from each treatment were blood sampled from 10–25.5 wk of age and plasma luteinizing hormone levels determined. While all birds had similar ages at first egg, birds given the high energy diet grew faster and had more fat, protein and fat-free mass in the body at first egg relative to birds consuming the least amount of energy. Birds fed the high energy diet also displayed a higher percentage of fat and lower percentage of protein at first egg than did the birds fed the low energy diet. Coefficients of variation for weight of protein and fat-free mass at first egg were 9.1 and 7.9%, respectively, compared to 24.4% for grams of fat at first egg; protein and fat-free masses appeared to be relatively constant at first egg. Linear regressions suggested a strong relationship between body composition and body weight both at 20 wk of age and first egg. Plasma luteinizing hormone levels were unaffected by diet. Key words: Broiler breeder, body composition, body weight, sexual maturity, energy intake

Sign in / Sign up

Export Citation Format

Share Document