Effects of <i>in ovo</i> administration of amino acids on hatchability and performance of meat chickens

Abstract

The effects of in ovo amino acid administration on hatchability traits and post-hatch performance were studied using eggs from a meat-type breeder flock (Ross) at 38 weeks of age. On day 15 of incubation, five treatments were applied, consisting of six replicates with 16 eggs per replicate. The treatments consisted of a non-injected negative control; a positive control in which saline was injected; and three treatments with saline, containing 23.72 mg lysine, glutamine, glycine and proline (AA1); 23.60 mg arginine, glutamine, glycine and proline (AA2); and 28.76 mg lysine, arginine, glutamine, glycine and proline (AA3). The hatchability traits were incubation period, chick weight at hatch as an absolute value (CWT) and chick weight at hatch as a percentage of egg weight (CWTP), and the post-hatch performance traits were body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR). Measurements on the chickens were taken during the starter (1 -21 days of age), finisher (22 -35 days of age) and entire (1 -35 days of age) experimental periods. In ovo amino acid treatments improved CWTP without affecting hatchability traits, and increased FI without altering the FCR of chickens during the entire experimental period. Chickens of the in ovo AA1 treatment had a higher FI than those of the control treatments during the finisher period. In ovo AA2 treatment increased CWT and BWG of the chickens during the starter period and entire experimental period and FI during the finisher period, when compared with those of the control treatments. In ovo AA2 treatment resulted in a longer period of incubation than those of other treatments. It was concluded that in ovo amino acid treatment increased CWTP and FI of chickens without affecting hatchability traits and feed efficiency and in ovo of AA2 treatment increased the incubation period, CWT and BWG when compared with those of control treatments during the entire experimental period. ______________________________________________________________________________________

In ovo injection of branched‐chain amino acids: Embryonic development, hatchability and hatching quality of turkey poults

“…Previous studies that used different BCAA mixtures (Bhanja & Mandal, 2005;Kita et al, 2015;Kop-Bozbay & Ocak, 2015b) indicated that there were no differences in hatchability and chick weights. Likewise, in several studies, IOF has increased hatchability (Uni et al, 2005;Shafey et al, 2013Shafey et al, , 2014 (2009), it may be expected that an excess of 8 g in the PW of the BCAAb group will result in an excess of about 80 g at slaughter.…”

“…Previous studies that used different BCAA mixtures (Bhanja & Mandal, ; Kita et al, ; Kop‐Bozbay & Ocak, ) indicated that there were no differences in hatchability and chick weights. Likewise, in several studies, IOF has increased hatchability (Uni et al, ; Shafey et al, , ) and improved the viability and weight of chicks and the development of intestine and muscle (Uni et al, ; Shafey, Alodan, Al‐Ruqaie, & Abouheif, ), depending on the nutrient injected. In contrast to the report by Shafey et al (), the IOF of BCAAb reduced the relative EmW, whereas it increased the yolk‐free and the relative PWs.…”

“…Likewise, in several studies, IOF has increased hatchability (Uni et al, ; Shafey et al, , ) and improved the viability and weight of chicks and the development of intestine and muscle (Uni et al, ; Shafey, Alodan, Al‐Ruqaie, & Abouheif, ), depending on the nutrient injected. In contrast to the report by Shafey et al (), the IOF of BCAAb reduced the relative EmW, whereas it increased the yolk‐free and the relative PWs. Indeed, the growth rates for the BCAAb, SA and NC poults were 47%, 20% and 20% respectively.…”

“…A higher number of dead embryos in the BCAA groups may be related to the high osmotic pressure of the injected solution, allergic cavities or the pure toxicity of the high amino acid levels concerned (Bhanja & Mandal, 2005;Bhattacharyya et al, 2018) or to injection sites and times (Ohta & Kidd, 2001;Kop-Bozbay & Ocak, 2015b). The yolk and albumin of a fertile egg contain considerable amounts of amino acids for embryonic growth and development (Shafey et al, 2013(Shafey et al, , 2014. However, in our study, the lack of development of embryos and the increase in the non-pipped dead in the BCAAb eggs was accompanied by a relatively lower amount of residual YS.…”

Response of in ovo administration of zinc on egg hatchability and immune response of commercial broiler chicken

“…in ovo iron administration at 80 μg/egg improved humoral immune status and post‐hatch growth, whereas copper at 8 μg/egg enhanced the cellular immune response (Goel, Bhanja, Mehra, Pande, & Majumdar, ) in broiler chicken. in ovo glucose administration, modulated humoral immunity and fructose/ribose administration improved cellular immunity (Shafey, Mahmoud, Alsobayel, & Abouheif, ). Bhanja et al.…”