Effect of Feed Restriction on Growth, Body Composition, and Egg Production of Broiler Females Through 68 Weeks of Age

Robbins, Kelly R.; McGhee, G. C.; Osei, Peter; Beauchene, Roy E.

doi:10.3382/ps.0652226

Cited by 37 publications

(18 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Katanbaf et al (1989a) suggested that body weight in ad-libitum-fed birds may reach a plateau as a consequence ofreduced voluntary food intake due to a loss in "vigor". The poor laying performance of the adIibitum-fed hens compared to the feedrestricted hens supports the findings of previous studies (Robbins et al 1986;Hocking et al 1987Hocking et al , 1989Katanbaf et al 1989b) and reinforces the necessity of limiting feed intake of broiler mothers. It has been reported previously that ad libitum feeding hastens sexual maturity, due to the fact that such birds attain the prerequisite body mass and body composition sooner than feedresrricted hens (Brody et al 1980;Robbins et al 1986;Ingram and Wilson 1987;Hocking et al 1989;Katanbafet al 1989b).…”

Section: Resultssupporting

confidence: 80%

“…Furthermore, Katanbaf et al (1989b) reported Katanbaf et al 1989a) but differs from the work of Robbins et al (1986) who reported similar mortality figures for hens which were feed-restricted or ad-libitumfed during lay.…”

Section: Resultscontrasting

confidence: 45%

“…The ad-libitum-fed hens were 700 g heavier than the feed-restricted hens by 25 Robbins et al (1986), and may have been related to appetite satiation or to the physical limits of gut capacity. Katanbaf et al (1989a) suggested that body weight in ad-libitum-fed birds may reach a plateau as a consequence ofreduced voluntary food intake due to a loss in "vigor".…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Reproductive performance, growth rate and body composition of full-fed versus feed-restricted broiler breeder hens

Robinson¹,

Robinson²,

Scott³

1991

Can. J. Anim. Sci.

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 80%

Section: Resultscontrasting

confidence: 45%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Reproductive performance, growth rate and body composition of full-fed versus feed-restricted broiler breeder hens

Robinson¹,

Robinson²,

Scott³

1991

Can. J. Anim. Sci.

View full text Add to dashboard Cite

“…Age at sexual maturity, days from photostimulation to sexual maturity, and settable egg age data indicate that HIGH birds were able to respond to the photostimulatory cue more quickly than the LOW or STD birds (Table 2). Previous studies have shown that increasing BW during rearing advances age at sexual maturity in broiler breeder hens (Robbins et al 1986, Yu et al 1992, Yuan et al 1994. However, the differences in BW targets between rearing growth curves used in the current study were smaller than that of the previous studies.…”

Section: Body Weight and Sexual Maturitycontrasting

confidence: 55%

Effects of altering growth curve and age at photostimulation in female broiler breeders. 2. Egg production parameters

Renema¹,

Robinson²,

Goerzen³

et al. 2001

Can. J. Anim. Sci.

View full text Add to dashboard Cite

2001. Effects of altering growth curve and age at photo-stimulation in female broiler breeders. 2. Egg production parameters. Can. J. Anim. Sci. 81: 477-486. An experiment was conducted to evaluate the effect of differences in growth curve and age at photostimulation on egg production parameters and carcass traits at 61 wk of age in broiler breeder hens. Pullets were grown on one of three growth curves: STD (standard), LOW (150 g lighter than STD) and HIGH (150 g heavier than STD), and photostimulated at either 19 wk of age (19WK) or 21 wk of age (21WK). The egg production and BW of 36 birds per interaction were individually monitored from photostimulation to 61 wk of age. Individual, daily egg production records were analyzed for total, settable, and defective egg production, rate of production, sequence length, and egg weight. Eggs were incubated for determination of fertility, hatchability, and embryonic mortality parameters. All birds remaining at 61 wk of age were processed for determination of carcass and reproductive morphology. Unless otherwise stated, all significance was assessed at the P < 0.05 level. Earlier photostimulation age advanced age at sexual maturity, but reduced the first egg weight. Weight of the first egg did not differ among growth curves. Settable egg production to 61 wk was not affected by growth curve, with settable egg production ranging from 157.5 eggs in STD birds to 164.1 eggs in HIGH birds. The HIGH birds produced more double-yolked eggs than LOW birds. Photostimulation age did not affect egg production. Eggs of the LOW birds underwent more embryonic loss during 1 to 7 d of incubation than either STD or HIGH eggs. At 61 wk of age, the shank length of birds on the LOW profile was less than that of the STD birds or the HIGH birds. Abdominal fatpad as a percentage of BW differed among growth curve treatments, comprising 4.46% (LOW), 5.06% (STD), and 5.69% (HIGH) of hen BW. Ovary weight of HIGH birds (44.7 g) was higher than that of LOW (39.2 g) or STD birds (37.7 g), but contained a similar number of large yellow follicles. The proportion of large yellow follicles in multiple follicle sets at 61 wk was correlated with unsettable egg number (r = 0.265), and was negatively associated with chick number (r =-0.269). There was no production advantage to early photostimulation, and egg and chick production were not negatively affected by a moderate raising or lowering of the growth curve.. 2001. Modification de la courbe de croissance et de l'âge à la photostimulation et leur incidence sur les pondeuses de poulets de chair : 2. Paramètres de ponte. Can. J. Anim. Sci. 81: 477-486. Les auteurs ont effectué une expérience pour déterminer quels effets une modification de la courbe de croissance et de l'âge à la photostimulation aurait sur les paramètres de ponte et la conformation de la carcasse des pondeuses d'oeufs d'incubation âgées de 61 semaines. Les poulettes ont été réparties en trois groupes de courbe de croissance différente-soit STD (standard), FAIBLE (150 g de moins que STD) et ÉL...

show abstract

“…Feed restriction delays age at sexual maturity (Robbins et al 1986;Yu et al 1992) possibly through delaying maturation of the hypothalamic-anterior pituitary axis (Yu et al 1992), by later attainment of adequate body size (Brody et al 1980;Dunnington et al 1984), or by delaying the achievement of a favorable metabolic environment (Renema et al 1999a) to commence sexual maturation. The effects of small differences in feed restriction programs or in photostimulation ages have also been investigated.…”

mentioning

confidence: 99%

Effects of altering growth curve and age at photostimulation in female broiler breeders. 1. Reproductive development

Renema¹,

Robinson²,

Goerzen³

2001

Can. J. Anim. Sci.

View full text Add to dashboard Cite

. 2001. Effects of altering growth curve and age at photostimulation in female broiler breeders. 1. Reproductive development. Can. J. Anim. Sci. 81: 467-476. An experiment was conducted to evaluate the effect of differences in growth curve and age at photostimulation on carcass traits and ovarian morphology in broiler breeder hens at photostimulation and at sexual maturity. Pullets were grown on one of three growth curves STD (standard), LOW (150 g lighter than STD) and HIGH (150 g heavier than STD), and were photostimulated at either 19 wk of age (19WK) or 21 wk of age (21WK). Weekly blood samples were taken between photostimulation and sexual maturity for determination of estradiol-17β concentration. Twelve birds per interaction were processed at photostimulation for determination of carcass and reproductive morphology, followed by an additional 10 birds per interaction at sexual maturity. Unless otherwise stated, all significance was assessed at the P < 0.05 level.At photostimulation, the HIGH birds were larger and had more carcass lipid (7.44%) than the LOW birds (6.22%). By sexual maturity, carcass lipid as a percentage of BW was similar among the growth curve groups, as were the weights of most carcass parameters measured relative to BW. The large yellow follicle content of ovaries from LOW, STD, and HIGH birds were not different. Ovaries from HIGH birds had 48.2% of large yellow follicles arranged in multiple sets (large yellow follicles weighing within 1 g) compared to 29.5% in STD birds. Birds photostimulated earlier took longer to lay their first egg after photostimulation The profile of plasma estradiol-17β concentration of the 19WK birds appeared to increase more slowly than for the 21WK pullets. As plasma estradiol-17β concentration will increase at a regular rate once it begins to increase, the flatter summary profile of 19WK pullets may be indicative of a less-uniform response to photostimulation. Based on the BW growth curves used in this trial and data collected at photostimulation and sexual maturity, there was no advantage of early photostimulation, and ovarian morphology may be negatively affected by moderate increases in rearing growth curve. Key words:Broiler breeder, sexual maturity, ovarian morphology, growth curve, body weight Renema, R. A., Robinson, F. E. et Goerzen, P. R. 2001. Modification de la courbe de croissance et de l'âge à la photostimulation et leur incidence sur les pondeuses de poulets de chair : 1. Développement du système reproducteur. Can. J. Anim. Sci. 81: 467-476. Les auteurs ont tenté d'évaluer quels effets une modification de la courbe de croissance et de l'âge à la photostimulation pourrait avoir sur les paramètres de la carcasse et la morphologie des ovaires de pondeuses d'oeufs d'incubation au moment de la photostimulation et à maturité sexuelle. Les poulettes ont été réparties en trois groupes de courbe de croissance différente -soit STD (standard), FAIBLE (150 g de moins que STD) et ÉLEVÉE (150 g de plus que STD), puis photostimulées à l'âge de 19 (19 S) ou de 2...

show abstract

Effect of Feed Restriction on Growth, Body Composition, and Egg Production of Broiler Females Through 68 Weeks of Age

Cited by 37 publications

References 7 publications

Reproductive performance, growth rate and body composition of full-fed versus feed-restricted broiler breeder hens

Reproductive performance, growth rate and body composition of full-fed versus feed-restricted broiler breeder hens

Effects of altering growth curve and age at photostimulation in female broiler breeders. 2. Egg production parameters

Effects of altering growth curve and age at photostimulation in female broiler breeders. 1. Reproductive development

Contact Info

Product

Resources

About